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Diffstat (limited to 'src/window.c')
| -rw-r--r-- | src/window.c | 3720 |
1 files changed, 0 insertions, 3720 deletions
diff --git a/src/window.c b/src/window.c deleted file mode 100644 index dd5d472ed7e..00000000000 --- a/src/window.c +++ /dev/null @@ -1,3720 +0,0 @@ -/* Window creation, deletion and examination for GNU Emacs. - Does not include redisplay. - Copyright (C) 1985, 86, 87, 93, 94, 95, 96 Free Software Foundation, Inc. - -This file is part of GNU Emacs. - -GNU Emacs is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Emacs is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Emacs; see the file COPYING. If not, write to -the Free Software Foundation, Inc., 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#include <config.h> -#include "lisp.h" -#include "buffer.h" -#include "frame.h" -#include "window.h" -#include "commands.h" -#include "indent.h" -#include "termchar.h" -#include "disptab.h" -#include "keyboard.h" - -Lisp_Object Qwindowp, Qwindow_live_p; - -Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); -Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); - -void delete_all_subwindows (); -static struct window *decode_window(); - -/* This is the window in which the terminal's cursor should - be left when nothing is being done with it. This must - always be a leaf window, and its buffer is selected by - the top level editing loop at the end of each command. - - This value is always the same as - FRAME_SELECTED_WINDOW (selected_frame). */ - -Lisp_Object selected_window; - -/* The minibuffer window of the selected frame. - Note that you cannot test for minibufferness of an arbitrary window - by comparing against this; but you can test for minibufferness of - the selected window. */ -Lisp_Object minibuf_window; - -/* Non-nil means it is the window for C-M-v to scroll - when the minibuffer is selected. */ -Lisp_Object Vminibuf_scroll_window; - -/* Non-nil means this is the buffer whose window C-M-v should scroll. */ -Lisp_Object Vother_window_scroll_buffer; - -/* Non-nil means it's function to call to display temp buffers. */ -Lisp_Object Vtemp_buffer_show_function; - -/* If a window gets smaller than either of these, it is removed. */ -int window_min_height; -int window_min_width; - -/* Nonzero implies Fdisplay_buffer should create windows. */ -int pop_up_windows; - -/* Nonzero implies make new frames for Fdisplay_buffer. */ -int pop_up_frames; - -/* Non-nil means use this function instead of default */ -Lisp_Object Vpop_up_frame_function; - -/* Function to call to handle Fdisplay_buffer. */ -Lisp_Object Vdisplay_buffer_function; - -/* List of buffer *names* for buffers that should have their own frames. */ -Lisp_Object Vspecial_display_buffer_names; - -/* List of regexps for buffer names that should have their own frames. */ -Lisp_Object Vspecial_display_regexps; - -/* Function to pop up a special frame. */ -Lisp_Object Vspecial_display_function; - -/* List of buffer *names* for buffers to appear in selected window. */ -Lisp_Object Vsame_window_buffer_names; - -/* List of regexps for buffer names to appear in selected window. */ -Lisp_Object Vsame_window_regexps; - -/* Hook run at end of temp_output_buffer_show. */ -Lisp_Object Qtemp_buffer_show_hook; - -/* Fdisplay_buffer always splits the largest window - if that window is more than this high. */ -int split_height_threshold; - -/* Number of lines of continuity in scrolling by screenfuls. */ -int next_screen_context_lines; - -/* Incremented for each window created. */ -static int sequence_number; - -/* Nonzero after init_window_once has finished. */ -static int window_initialized; - -#define min(a, b) ((a) < (b) ? (a) : (b)) - -extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; - -DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, - "Returns t if OBJECT is a window.") - (object) - Lisp_Object object; -{ - return WINDOWP (object) ? Qt : Qnil; -} - -DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, - "Returns t if OBJECT is a window which is currently visible.") - (object) - Lisp_Object object; -{ - return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); -} - -Lisp_Object -make_window () -{ - Lisp_Object val; - register struct window *p; - register struct Lisp_Vector *vec; - int i; - - vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); - for (i = 0; i < VECSIZE (struct window); i++) - vec->contents[i] = Qnil; - vec->size = VECSIZE (struct window); - p = (struct window *)vec; - XSETFASTINT (p->sequence_number, ++sequence_number); - XSETFASTINT (p->left, 0); - XSETFASTINT (p->top, 0); - XSETFASTINT (p->height, 0); - XSETFASTINT (p->width, 0); - XSETFASTINT (p->hscroll, 0); - XSETFASTINT (p->last_point_x, 0); - XSETFASTINT (p->last_point_y, 0); - p->start = Fmake_marker (); - p->pointm = Fmake_marker (); - XSETFASTINT (p->use_time, 0); - p->frame = Qnil; - p->display_table = Qnil; - p->dedicated = Qnil; - XSETWINDOW (val, p); - return val; -} - -DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, - "Return the window that the cursor now appears in and commands apply to.") - () -{ - return selected_window; -} - -DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, - "Return the window used now for minibuffers.\n\ -If the optional argument FRAME is specified, return the minibuffer window\n\ -used by that frame.") - (frame) - Lisp_Object frame; -{ - if (NILP (frame)) - XSETFRAME (frame, selected_frame); - else - CHECK_LIVE_FRAME (frame, 0); - - return FRAME_MINIBUF_WINDOW (XFRAME (frame)); -} - -DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, - "Returns non-nil if WINDOW is a minibuffer window.") - (window) - Lisp_Object window; -{ - struct window *w = decode_window (window); - return (MINI_WINDOW_P (w) ? Qt : Qnil); -} - -DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, - Spos_visible_in_window_p, 0, 2, 0, - "Return t if position POS is currently on the frame in WINDOW.\n\ -Returns nil if that position is scrolled vertically out of view.\n\ -POS defaults to point; WINDOW, to the selected window.") - (pos, window) - Lisp_Object pos, window; -{ - register struct window *w; - register int top; - register int height; - register int posint; - register struct buffer *buf; - struct position posval; - int hscroll; - - if (NILP (pos)) - posint = PT; - else - { - CHECK_NUMBER_COERCE_MARKER (pos, 0); - posint = XINT (pos); - } - - w = decode_window (window); - top = marker_position (w->start); - hscroll = XINT (w->hscroll); - - if (posint < top) - return Qnil; - - height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); - - buf = XBUFFER (w->buffer); - if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) - && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)) - { - /* If frame is up to date, - use the info recorded about how much text fit on it. */ - if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) - || (XFASTINT (w->window_end_vpos) < height)) - return Qt; - return Qnil; - } - else - { - if (posint > BUF_ZV (buf)) - return Qnil; - - /* w->start can be out of range. If it is, do something reasonable. */ - if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) - return Qnil; - - /* If that info is not correct, calculate afresh */ - posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, - posint, height, 0, - window_internal_width (w) - 1, - hscroll, 0, w); - - return posval.vpos < height ? Qt : Qnil; - } -} - -static struct window * -decode_window (window) - register Lisp_Object window; -{ - if (NILP (window)) - return XWINDOW (selected_window); - - CHECK_LIVE_WINDOW (window, 0); - return XWINDOW (window); -} - -DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, - "Return the buffer that WINDOW is displaying.") - (window) - Lisp_Object window; -{ - return decode_window (window)->buffer; -} - -DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, - "Return the number of lines in WINDOW (including its mode line).") - (window) - Lisp_Object window; -{ - return decode_window (window)->height; -} - -DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, - "Return the number of display columns in WINDOW.\n\ -This is the width that is usable columns available for text in WINDOW.\n\ -If you want to find out how many columns WINDOW takes up,\n\ -use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") - (window) - Lisp_Object window; -{ - return make_number (window_internal_width (decode_window (window))); -} - -DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, - "Return the number of columns by which WINDOW is scrolled from left margin.") - (window) - Lisp_Object window; -{ - return decode_window (window)->hscroll; -} - -DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, - "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ -NCOL should be zero or positive.") - (window, ncol) - register Lisp_Object window, ncol; -{ - register struct window *w; - - CHECK_NUMBER (ncol, 1); - if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); - w = decode_window (window); - if (XINT (w->hscroll) != XINT (ncol)) - XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ - w->hscroll = ncol; - return ncol; -} - -DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, - Swindow_redisplay_end_trigger, 0, 1, 0, - "Return WINDOW's redisplay end trigger value.\n\ -See `set-window-redisplay-end-trigger' for more information.") - (window) - Lisp_Object window; -{ - return decode_window (window)->redisplay_end_trigger; -} - -DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, - Sset_window_redisplay_end_trigger, 2, 2, 0, - "Set WINDOW's redisplay end trigger value to VALUE.\n\ -VALUE should be a buffer position (typically a marker) or nil.\n\ -If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ -beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ -with two arguments: WINDOW, and the end trigger value.\n\ -Afterwards the end-trigger value is reset to nil.") - (window, value) - register Lisp_Object window, value; -{ - register struct window *w; - - w = decode_window (window); - w->redisplay_end_trigger = value; - return value; -} - -DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, - "Return a list of the edge coordinates of WINDOW.\n\ -\(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ -RIGHT is one more than the rightmost column used by WINDOW,\n\ -and BOTTOM is one more than the bottommost row used by WINDOW\n\ - and its mode-line.") - (window) - Lisp_Object window; -{ - register struct window *w = decode_window (window); - - return Fcons (w->left, Fcons (w->top, - Fcons (make_number (WINDOW_RIGHT_EDGE (w)), - Fcons (make_number (XFASTINT (w->top) - + XFASTINT (w->height)), - Qnil)))); -} - -/* Test if the character at column *x, row *y is within window *w. - If it is not, return 0; - if it is in the window's text area, - set *x and *y to its location relative to the upper left corner - of the window, and - return 1; - if it is on the window's modeline, return 2; - if it is on the border between the window and its right sibling, - return 3. */ -static int -coordinates_in_window (w, x, y) - register struct window *w; - register int *x, *y; -{ - register int left = XINT (w->left); - register int right_edge = WINDOW_RIGHT_EDGE (w); - register int left_margin = WINDOW_LEFT_MARGIN (w); - register int right_margin = WINDOW_RIGHT_MARGIN (w); - register int window_height = XINT (w->height); - register int top = XFASTINT (w->top); - - if ( *x < left || *x >= right_edge - || *y < top || *y >= top + window_height) - return 0; - - if (left_margin != left && *x < left_margin && *x >= left) - return 3; - - if (right_margin != right_edge && *x >= right_margin && *x < right_edge) - return 3; - - /* Is the character is the mode line? */ - if (*y == top + window_height - 1 - && ! MINI_WINDOW_P (w)) - return 2; - - *x -= WINDOW_LEFT_MARGIN (w); - *y -= top; - return 1; -} - -DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, - Scoordinates_in_window_p, 2, 2, 0, - "Return non-nil if COORDINATES are in WINDOW.\n\ -COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ -measured in characters from the upper-left corner of the frame.\n\ -(0 . 0) denotes the character in the upper left corner of the\n\ -frame.\n\ -If COORDINATES are in the text portion of WINDOW,\n\ - the coordinates relative to the window are returned.\n\ -If they are in the mode line of WINDOW, `mode-line' is returned.\n\ -If they are on the border between WINDOW and its right sibling,\n\ - `vertical-line' is returned.") - (coordinates, window) - register Lisp_Object coordinates, window; -{ - int x, y; - - CHECK_LIVE_WINDOW (window, 0); - CHECK_CONS (coordinates, 1); - x = XINT (Fcar (coordinates)); - y = XINT (Fcdr (coordinates)); - - switch (coordinates_in_window (XWINDOW (window), &x, &y)) - { - case 0: /* NOT in window at all. */ - return Qnil; - - case 1: /* In text part of window. */ - return Fcons (x, y); - - case 2: /* In mode line of window. */ - return Qmode_line; - - case 3: /* On right border of window. */ - return Qvertical_line; - - default: - abort (); - } -} - -/* Find the window containing column x, row y, and return it as a - Lisp_Object. If x, y is on the window's modeline, set *part - to 1; if it is on the separating line between the window and its - right sibling, set it to 2; otherwise set it to 0. If there is no - window under x, y return nil and leave *part unmodified. */ -Lisp_Object -window_from_coordinates (frame, x, y, part) - FRAME_PTR frame; - int x, y; - int *part; -{ - register Lisp_Object tem, first; - - tem = first = FRAME_SELECTED_WINDOW (frame); - - do - { - int found = coordinates_in_window (XWINDOW (tem), &x, &y); - - if (found) - { - *part = found - 1; - return tem; - } - - tem = Fnext_window (tem, Qt, Qlambda); - } - while (! EQ (tem, first)); - - return Qnil; -} - -DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, - "Return window containing coordinates X and Y on FRAME.\n\ -If omitted, FRAME defaults to the currently selected frame.\n\ -The top left corner of the frame is considered to be row 0,\n\ -column 0.") - (x, y, frame) - Lisp_Object x, y, frame; -{ - int part; - - if (NILP (frame)) - XSETFRAME (frame, selected_frame); - else - CHECK_LIVE_FRAME (frame, 2); - CHECK_NUMBER (x, 0); - CHECK_NUMBER (y, 1); - - return window_from_coordinates (XFRAME (frame), - XINT (x), XINT (y), - &part); -} - -DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, - "Return current value of point in WINDOW.\n\ -For a nonselected window, this is the value point would have\n\ -if that window were selected.\n\ -\n\ -Note that, when WINDOW is the selected window and its buffer\n\ -is also currently selected, the value returned is the same as (point).\n\ -It would be more strictly correct to return the `top-level' value\n\ -of point, outside of any save-excursion forms.\n\ -But that is hard to define.") - (window) - Lisp_Object window; -{ - register struct window *w = decode_window (window); - - if (w == XWINDOW (selected_window) - && current_buffer == XBUFFER (w->buffer)) - return Fpoint (); - return Fmarker_position (w->pointm); -} - -DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, - "Return position at which display currently starts in WINDOW.\n\ -This is updated by redisplay or by calling `set-window-start'.") - (window) - Lisp_Object window; -{ - return Fmarker_position (decode_window (window)->start); -} - -/* This is text temporarily removed from the doc string below. - -This function returns nil if the position is not currently known.\n\ -That happens when redisplay is preempted and doesn't finish.\n\ -If in that case you want to compute where the end of the window would\n\ -have been if redisplay had finished, do this:\n\ - (save-excursion\n\ - (goto-char (window-start window))\n\ - (vertical-motion (1- (window-height window)) window)\n\ - (point))") */ - -DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, - "Return position at which display currently ends in WINDOW.\n\ -This is updated by redisplay, when it runs to completion.\n\ -Simply changing the buffer text or setting `window-start'\n\ -does not update this value.") - (window) - Lisp_Object window; -{ - Lisp_Object value; - struct window *w = decode_window (window); - Lisp_Object buf; - - buf = w->buffer; - CHECK_BUFFER (buf, 0); - -#if 0 /* This change broke some things. We should make it later. */ - /* If we don't know the end position, return nil. - The user can compute it with vertical-motion if he wants to. - It would be nicer to do it automatically, - but that's so slow that it would probably bother people. */ - if (NILP (w->window_end_valid)) - return Qnil; -#endif - - XSETINT (value, - BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); - - return value; -} - -DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, - "Make point value in WINDOW be at position POS in WINDOW's buffer.") - (window, pos) - Lisp_Object window, pos; -{ - register struct window *w = decode_window (window); - - CHECK_NUMBER_COERCE_MARKER (pos, 1); - if (w == XWINDOW (selected_window)) - Fgoto_char (pos); - else - set_marker_restricted (w->pointm, pos, w->buffer); - - return pos; -} - -DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, - "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ -Optional third arg NOFORCE non-nil inhibits next redisplay\n\ -from overriding motion of point in order to display at this exact start.") - (window, pos, noforce) - Lisp_Object window, pos, noforce; -{ - register struct window *w = decode_window (window); - - CHECK_NUMBER_COERCE_MARKER (pos, 1); - set_marker_restricted (w->start, pos, w->buffer); - /* this is not right, but much easier than doing what is right. */ - w->start_at_line_beg = Qnil; - if (NILP (noforce)) - w->force_start = Qt; - w->update_mode_line = Qt; - XSETFASTINT (w->last_modified, 0); - XSETFASTINT (w->last_overlay_modified, 0); - if (!EQ (window, selected_window)) - windows_or_buffers_changed++; - return pos; -} - -DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, - 1, 1, 0, - "Return WINDOW's dedicated object, usually t or nil.\n\ -See also `set-window-dedicated-p'.") - (window) - Lisp_Object window; -{ - return decode_window (window)->dedicated; -} - -DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, - Sset_window_dedicated_p, 2, 2, 0, - "Control whether WINDOW is dedicated to the buffer it displays.\n\ -If it is dedicated, Emacs will not automatically change\n\ -which buffer appears in it.\n\ -The second argument is the new value for the dedication flag;\n\ -non-nil means yes.") - (window, arg) - Lisp_Object window, arg; -{ - register struct window *w = decode_window (window); - - if (NILP (arg)) - w->dedicated = Qnil; - else - w->dedicated = Qt; - - return w->dedicated; -} - -DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, - 0, 1, 0, - "Return the display-table that WINDOW is using.") - (window) - Lisp_Object window; -{ - return decode_window (window)->display_table; -} - -/* Get the display table for use currently on window W. - This is either W's display table or W's buffer's display table. - Ignore the specified tables if they are not valid; - if no valid table is specified, return 0. */ - -struct Lisp_Char_Table * -window_display_table (w) - struct window *w; -{ - Lisp_Object tem; - tem = w->display_table; - if (DISP_TABLE_P (tem)) - return XCHAR_TABLE (tem); - tem = XBUFFER (w->buffer)->display_table; - if (DISP_TABLE_P (tem)) - return XCHAR_TABLE (tem); - tem = Vstandard_display_table; - if (DISP_TABLE_P (tem)) - return XCHAR_TABLE (tem); - return 0; -} - -DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, - "Set WINDOW's display-table to TABLE.") - (window, table) - register Lisp_Object window, table; -{ - register struct window *w; - register Lisp_Object z; /* Return value. */ - - w = decode_window (window); - w->display_table = table; - return table; -} - -/* Record info on buffer window w is displaying - when it is about to cease to display that buffer. */ -static -unshow_buffer (w) - register struct window *w; -{ - Lisp_Object buf; - - buf = w->buffer; - if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) - abort (); - - if (w == XWINDOW (XBUFFER (buf)->last_selected_window)) - XBUFFER (buf)->last_selected_window = Qnil; - -#if 0 - if (w == XWINDOW (selected_window) - || ! EQ (buf, XWINDOW (selected_window)->buffer)) - /* Do this except when the selected window's buffer - is being removed from some other window. */ -#endif - /* last_window_start records the start position that this buffer - had in the last window to be disconnected from it. - Now that this statement is unconditional, - it is possible for the buffer to be displayed in the - selected window, while last_window_start reflects another - window which was recently showing the same buffer. - Some people might say that might be a good thing. Let's see. */ - XBUFFER (buf)->last_window_start = marker_position (w->start); - - /* Point in the selected window's buffer - is actually stored in that buffer, and the window's pointm isn't used. - So don't clobber point in that buffer. */ - if (! EQ (buf, XWINDOW (selected_window)->buffer)) - BUF_PT (XBUFFER (buf)) - = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), - marker_position (w->pointm), - BUF_ZV (XBUFFER (buf))); -} - -/* Put replacement into the window structure in place of old. */ -static -replace_window (old, replacement) - Lisp_Object old, replacement; -{ - register Lisp_Object tem; - register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); - - /* If OLD is its frame's root_window, then replacement is the new - root_window for that frame. */ - - if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) - FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; - - p->left = o->left; - p->top = o->top; - p->width = o->width; - p->height = o->height; - - p->next = tem = o->next; - if (!NILP (tem)) - XWINDOW (tem)->prev = replacement; - - p->prev = tem = o->prev; - if (!NILP (tem)) - XWINDOW (tem)->next = replacement; - - p->parent = tem = o->parent; - if (!NILP (tem)) - { - if (EQ (XWINDOW (tem)->vchild, old)) - XWINDOW (tem)->vchild = replacement; - if (EQ (XWINDOW (tem)->hchild, old)) - XWINDOW (tem)->hchild = replacement; - } - -/*** Here, if replacement is a vertical combination -and so is its new parent, we should make replacement's -children be children of that parent instead. ***/ -} - -DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", - "Remove WINDOW from the display. Default is selected window.") - (window) - register Lisp_Object window; -{ - register Lisp_Object tem, parent, sib; - register struct window *p; - register struct window *par; - - /* Because this function is called by other C code on non-leaf - windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, - so we can't decode_window here. */ - if (NILP (window)) - window = selected_window; - else - CHECK_WINDOW (window, 0); - p = XWINDOW (window); - - /* It's okay to delete an already-deleted window. */ - if (NILP (p->buffer) - && NILP (p->hchild) - && NILP (p->vchild)) - return Qnil; - - parent = p->parent; - if (NILP (parent)) - error ("Attempt to delete minibuffer or sole ordinary window"); - par = XWINDOW (parent); - - windows_or_buffers_changed++; - FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; - - /* Are we trying to delete any frame's selected window? */ - { - Lisp_Object frame, pwindow; - - /* See if the frame's selected window is either WINDOW - or any subwindow of it, by finding all that window's parents - and comparing each one with WINDOW. */ - frame = WINDOW_FRAME (XWINDOW (window)); - pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); - - while (!NILP (pwindow)) - { - if (EQ (window, pwindow)) - break; - pwindow = XWINDOW (pwindow)->parent; - } - - if (EQ (window, pwindow)) - { - Lisp_Object alternative; - alternative = Fnext_window (window, Qlambda, Qnil); - - /* If we're about to delete the selected window on the - selected frame, then we should use Fselect_window to select - the new window. On the other hand, if we're about to - delete the selected window on any other frame, we shouldn't do - anything but set the frame's selected_window slot. */ - if (EQ (window, selected_window)) - Fselect_window (alternative); - else - FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; - } - } - - tem = p->buffer; - /* tem is null for dummy parent windows - (which have inferiors but not any contents themselves) */ - if (!NILP (tem)) - { - unshow_buffer (p); - unchain_marker (p->pointm); - unchain_marker (p->start); - } - - tem = p->next; - if (!NILP (tem)) - XWINDOW (tem)->prev = p->prev; - - tem = p->prev; - if (!NILP (tem)) - XWINDOW (tem)->next = p->next; - - if (EQ (window, par->hchild)) - par->hchild = p->next; - if (EQ (window, par->vchild)) - par->vchild = p->next; - - /* Find one of our siblings to give our space to. */ - sib = p->prev; - if (NILP (sib)) - { - /* If p gives its space to its next sibling, that sibling needs - to have its top/left side pulled back to where p's is. - set_window_{height,width} will re-position the sibling's - children. */ - sib = p->next; - XWINDOW (sib)->top = p->top; - XWINDOW (sib)->left = p->left; - } - - /* Stretch that sibling. */ - if (!NILP (par->vchild)) - set_window_height (sib, - XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), - 1); - if (!NILP (par->hchild)) - set_window_width (sib, - XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), - 1); - - /* If parent now has only one child, - put the child into the parent's place. */ - tem = par->hchild; - if (NILP (tem)) - tem = par->vchild; - if (NILP (XWINDOW (tem)->next)) - replace_window (parent, tem); - - /* Since we may be deleting combination windows, we must make sure that - not only p but all its children have been marked as deleted. */ - if (! NILP (p->hchild)) - delete_all_subwindows (XWINDOW (p->hchild)); - else if (! NILP (p->vchild)) - delete_all_subwindows (XWINDOW (p->vchild)); - - /* Mark this window as deleted. */ - p->buffer = p->hchild = p->vchild = Qnil; - - return Qnil; -} - - -extern Lisp_Object next_frame (), prev_frame (); - -/* This comment supplies the doc string for `next-window', - for make-docfile to see. We cannot put this in the real DEFUN - due to limits in the Unix cpp. - -DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, - "Return next window after WINDOW in canonical ordering of windows.\n\ -If omitted, WINDOW defaults to the selected window.\n\ -\n\ -Optional second arg MINIBUF t means count the minibuffer window even\n\ -if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ -it is active. MINIBUF neither t nor nil means not to count the\n\ -minibuffer even if it is active.\n\ -\n\ -Several frames may share a single minibuffer; if the minibuffer\n\ -counts, all windows on all frames that share that minibuffer count\n\ -too. Therefore, `next-window' can be used to iterate through the\n\ -set of windows even when the minibuffer is on another frame. If the\n\ -minibuffer does not count, only windows from WINDOW's frame count.\n\ -\n\ -Optional third arg ALL-FRAMES t means include windows on all frames.\n\ -ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ -above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ -ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ -If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ -Anything else means restrict to WINDOW's frame.\n\ -\n\ -If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ -`next-window' to iterate through the entire cycle of acceptable\n\ -windows, eventually ending up back at the window you started with.\n\ -`previous-window' traverses the same cycle, in the reverse order.") - (window, minibuf, all_frames) */ - -DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, - 0) - (window, minibuf, all_frames) - register Lisp_Object window, minibuf, all_frames; -{ - register Lisp_Object tem; - Lisp_Object start_window; - - if (NILP (window)) - window = selected_window; - else - CHECK_LIVE_WINDOW (window, 0); - - start_window = window; - - /* minibuf == nil may or may not include minibuffers. - Decide if it does. */ - if (NILP (minibuf)) - minibuf = (minibuf_level ? minibuf_window : Qlambda); - else if (! EQ (minibuf, Qt)) - minibuf = Qlambda; - /* Now minibuf can be t => count all minibuffer windows, - lambda => count none of them, - or a specific minibuffer window (the active one) to count. */ - - /* all_frames == nil doesn't specify which frames to include. */ - if (NILP (all_frames)) - all_frames = (! EQ (minibuf, Qlambda) - ? (FRAME_MINIBUF_WINDOW - (XFRAME - (WINDOW_FRAME - (XWINDOW (window))))) - : Qnil); - else if (EQ (all_frames, Qvisible)) - ; - else if (XFASTINT (all_frames) == 0) - ; - else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) - /* If all_frames is a frame and window arg isn't on that frame, just - return the first window on the frame. */ - return Fframe_first_window (all_frames); - else if (! EQ (all_frames, Qt)) - all_frames = Qnil; - /* Now all_frames is t meaning search all frames, - nil meaning search just current frame, - visible meaning search just visible frames, - 0 meaning search visible and iconified frames, - or a window, meaning search the frame that window belongs to. */ - - /* Do this loop at least once, to get the next window, and perhaps - again, if we hit the minibuffer and that is not acceptable. */ - do - { - /* Find a window that actually has a next one. This loop - climbs up the tree. */ - while (tem = XWINDOW (window)->next, NILP (tem)) - if (tem = XWINDOW (window)->parent, !NILP (tem)) - window = tem; - else - { - /* We've reached the end of this frame. - Which other frames are acceptable? */ - tem = WINDOW_FRAME (XWINDOW (window)); - if (! NILP (all_frames)) - { - Lisp_Object tem1; - - tem1 = tem; - tem = next_frame (tem, all_frames); - /* In the case where the minibuffer is active, - and we include its frame as well as the selected one, - next_frame may get stuck in that frame. - If that happens, go back to the selected frame - so we can complete the cycle. */ - if (EQ (tem, tem1)) - XSETFRAME (tem, selected_frame); - } - tem = FRAME_ROOT_WINDOW (XFRAME (tem)); - - break; - } - - window = tem; - - /* If we're in a combination window, find its first child and - recurse on that. Otherwise, we've found the window we want. */ - while (1) - { - if (!NILP (XWINDOW (window)->hchild)) - window = XWINDOW (window)->hchild; - else if (!NILP (XWINDOW (window)->vchild)) - window = XWINDOW (window)->vchild; - else break; - } - } - /* Which windows are acceptable? - Exit the loop and accept this window if - this isn't a minibuffer window, - or we're accepting all minibuffer windows, - or this is the active minibuffer and we are accepting that one, or - we've come all the way around and we're back at the original window. */ - while (MINI_WINDOW_P (XWINDOW (window)) - && ! EQ (minibuf, Qt) - && ! EQ (minibuf, window) - && ! EQ (window, start_window)); - - return window; -} - -/* This comment supplies the doc string for `previous-window', - for make-docfile to see. We cannot put this in the real DEFUN - due to limits in the Unix cpp. - -DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, - "Return the window preceding WINDOW in canonical ordering of windows.\n\ -If omitted, WINDOW defaults to the selected window.\n\ -\n\ -Optional second arg MINIBUF t means count the minibuffer window even\n\ -if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ -it is active. MINIBUF neither t nor nil means not to count the\n\ -minibuffer even if it is active.\n\ -\n\ -Several frames may share a single minibuffer; if the minibuffer\n\ -counts, all windows on all frames that share that minibuffer count\n\ -too. Therefore, `previous-window' can be used to iterate through\n\ -the set of windows even when the minibuffer is on another frame. If\n\ -the minibuffer does not count, only windows from WINDOW's frame count\n\ -\n\ -Optional third arg ALL-FRAMES t means include windows on all frames.\n\ -ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ -above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ -ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ -If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ -Anything else means restrict to WINDOW's frame.\n\ -\n\ -If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ -`previous-window' to iterate through the entire cycle of acceptable\n\ -windows, eventually ending up back at the window you started with.\n\ -`next-window' traverses the same cycle, in the reverse order.") - (window, minibuf, all_frames) */ - - -DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, - 0) - (window, minibuf, all_frames) - register Lisp_Object window, minibuf, all_frames; -{ - register Lisp_Object tem; - Lisp_Object start_window; - - if (NILP (window)) - window = selected_window; - else - CHECK_LIVE_WINDOW (window, 0); - - start_window = window; - - /* minibuf == nil may or may not include minibuffers. - Decide if it does. */ - if (NILP (minibuf)) - minibuf = (minibuf_level ? minibuf_window : Qlambda); - else if (! EQ (minibuf, Qt)) - minibuf = Qlambda; - /* Now minibuf can be t => count all minibuffer windows, - lambda => count none of them, - or a specific minibuffer window (the active one) to count. */ - - /* all_frames == nil doesn't specify which frames to include. - Decide which frames it includes. */ - if (NILP (all_frames)) - all_frames = (! EQ (minibuf, Qlambda) - ? (FRAME_MINIBUF_WINDOW - (XFRAME - (WINDOW_FRAME - (XWINDOW (window))))) - : Qnil); - else if (EQ (all_frames, Qvisible)) - ; - else if (XFASTINT (all_frames) == 0) - ; - else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) - /* If all_frames is a frame and window arg isn't on that frame, just - return the first window on the frame. */ - return Fframe_first_window (all_frames); - else if (! EQ (all_frames, Qt)) - all_frames = Qnil; - /* Now all_frames is t meaning search all frames, - nil meaning search just current frame, - visible meaning search just visible frames, - 0 meaning search visible and iconified frames, - or a window, meaning search the frame that window belongs to. */ - - /* Do this loop at least once, to get the previous window, and perhaps - again, if we hit the minibuffer and that is not acceptable. */ - do - { - /* Find a window that actually has a previous one. This loop - climbs up the tree. */ - while (tem = XWINDOW (window)->prev, NILP (tem)) - if (tem = XWINDOW (window)->parent, !NILP (tem)) - window = tem; - else - { - /* We have found the top window on the frame. - Which frames are acceptable? */ - tem = WINDOW_FRAME (XWINDOW (window)); - if (! NILP (all_frames)) - /* It's actually important that we use prev_frame here, - rather than next_frame. All the windows acceptable - according to the given parameters should form a ring; - Fnext_window and Fprevious_window should go back and - forth around the ring. If we use next_frame here, - then Fnext_window and Fprevious_window take different - paths through the set of acceptable windows. - window_loop assumes that these `ring' requirement are - met. */ - { - Lisp_Object tem1; - - tem1 = tem; - tem = prev_frame (tem, all_frames); - /* In the case where the minibuffer is active, - and we include its frame as well as the selected one, - next_frame may get stuck in that frame. - If that happens, go back to the selected frame - so we can complete the cycle. */ - if (EQ (tem, tem1)) - XSETFRAME (tem, selected_frame); - } - /* If this frame has a minibuffer, find that window first, - because it is conceptually the last window in that frame. */ - if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) - tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); - else - tem = FRAME_ROOT_WINDOW (XFRAME (tem)); - - break; - } - - window = tem; - /* If we're in a combination window, find its last child and - recurse on that. Otherwise, we've found the window we want. */ - while (1) - { - if (!NILP (XWINDOW (window)->hchild)) - window = XWINDOW (window)->hchild; - else if (!NILP (XWINDOW (window)->vchild)) - window = XWINDOW (window)->vchild; - else break; - while (tem = XWINDOW (window)->next, !NILP (tem)) - window = tem; - } - } - /* Which windows are acceptable? - Exit the loop and accept this window if - this isn't a minibuffer window, - or we're accepting all minibuffer windows, - or this is the active minibuffer and we are accepting that one, or - we've come all the way around and we're back at the original window. */ - while (MINI_WINDOW_P (XWINDOW (window)) - && ! EQ (minibuf, Qt) - && ! EQ (minibuf, window) - && ! EQ (window, start_window)); - - return window; -} - -DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", - "Select the ARG'th different window on this frame.\n\ -All windows on current frame are arranged in a cyclic order.\n\ -This command selects the window ARG steps away in that order.\n\ -A negative ARG moves in the opposite order. If the optional second\n\ -argument ALL_FRAMES is non-nil, cycle through all frames.") - (arg, all_frames) - register Lisp_Object arg, all_frames; -{ - register int i; - register Lisp_Object w; - - CHECK_NUMBER (arg, 0); - w = selected_window; - i = XINT (arg); - - while (i > 0) - { - w = Fnext_window (w, Qnil, all_frames); - i--; - } - while (i < 0) - { - w = Fprevious_window (w, Qnil, all_frames); - i++; - } - Fselect_window (w); - return Qnil; -} - -/* Look at all windows, performing an operation specified by TYPE - with argument OBJ. - If FRAMES is Qt, look at all frames; - Qnil, look at just the selected frame; - Qvisible, look at visible frames; - a frame, just look at windows on that frame. - If MINI is non-zero, perform the operation on minibuffer windows too. -*/ - -enum window_loop -{ - WINDOW_LOOP_UNUSED, - GET_BUFFER_WINDOW, /* Arg is buffer */ - GET_LRU_WINDOW, /* Arg is t for full-width windows only */ - DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ - DELETE_BUFFER_WINDOWS, /* Arg is buffer */ - GET_LARGEST_WINDOW, - UNSHOW_BUFFER /* Arg is buffer */ -}; - -static Lisp_Object -window_loop (type, obj, mini, frames) - enum window_loop type; - register Lisp_Object obj, frames; - int mini; -{ - register Lisp_Object w; - register Lisp_Object best_window; - register Lisp_Object next_window; - register Lisp_Object last_window; - FRAME_PTR frame; - Lisp_Object frame_arg; - frame_arg = Qt; - - /* If we're only looping through windows on a particular frame, - frame points to that frame. If we're looping through windows - on all frames, frame is 0. */ - if (FRAMEP (frames)) - frame = XFRAME (frames); - else if (NILP (frames)) - frame = selected_frame; - else - frame = 0; - if (frame) - frame_arg = Qlambda; - else if (XFASTINT (frames) == 0) - frame_arg = frames; - else if (EQ (frames, Qvisible)) - frame_arg = frames; - - /* frame_arg is Qlambda to stick to one frame, - Qvisible to consider all visible frames, - or Qt otherwise. */ - - /* Pick a window to start with. */ - if (WINDOWP (obj)) - w = obj; - else if (frame) - w = FRAME_SELECTED_WINDOW (frame); - else - w = FRAME_SELECTED_WINDOW (selected_frame); - - /* Figure out the last window we're going to mess with. Since - Fnext_window, given the same options, is guaranteed to go in a - ring, we can just use Fprevious_window to find the last one. - - We can't just wait until we hit the first window again, because - it might be deleted. */ - - last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); - - best_window = Qnil; - for (;;) - { - FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); - - /* Pick the next window now, since some operations will delete - the current window. */ - next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); - - /* Note that we do not pay attention here to whether - the frame is visible, since Fnext_window skips non-visible frames - if that is desired, under the control of frame_arg. */ - if (! MINI_WINDOW_P (XWINDOW (w)) - || (mini && minibuf_level > 0)) - switch (type) - { - case GET_BUFFER_WINDOW: - if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj) - /* Don't find any minibuffer window - except the one that is currently in use. */ - && (MINI_WINDOW_P (XWINDOW (w)) - ? EQ (w, minibuf_window) : 1)) - return w; - break; - - case GET_LRU_WINDOW: - /* t as arg means consider only full-width windows */ - if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) - break; - /* Ignore dedicated windows and minibuffers. */ - if (MINI_WINDOW_P (XWINDOW (w)) - || !NILP (XWINDOW (w)->dedicated)) - break; - if (NILP (best_window) - || (XFASTINT (XWINDOW (best_window)->use_time) - > XFASTINT (XWINDOW (w)->use_time))) - best_window = w; - break; - - case DELETE_OTHER_WINDOWS: - if (XWINDOW (w) != XWINDOW (obj)) - Fdelete_window (w); - break; - - case DELETE_BUFFER_WINDOWS: - if (EQ (XWINDOW (w)->buffer, obj)) - { - FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); - - /* If this window is dedicated, and in a frame of its own, - kill the frame. */ - if (EQ (w, FRAME_ROOT_WINDOW (f)) - && !NILP (XWINDOW (w)->dedicated) - && other_visible_frames (f)) - { - /* Skip the other windows on this frame. - There might be one, the minibuffer! */ - if (! EQ (w, last_window)) - while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) - { - /* As we go, check for the end of the loop. - We mustn't start going around a second time. */ - if (EQ (next_window, last_window)) - { - last_window = w; - break; - } - next_window = Fnext_window (next_window, - mini ? Qt : Qnil, - frame_arg); - } - /* Now we can safely delete the frame. */ - Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); - } - else - /* If we're deleting the buffer displayed in the only window - on the frame, find a new buffer to display there. */ - if (NILP (XWINDOW (w)->parent)) - { - Lisp_Object new_buffer; - new_buffer = Fother_buffer (obj, Qnil); - if (NILP (new_buffer)) - new_buffer - = Fget_buffer_create (build_string ("*scratch*")); - Fset_window_buffer (w, new_buffer); - if (EQ (w, selected_window)) - Fset_buffer (XWINDOW (w)->buffer); - } - else - Fdelete_window (w); - } - break; - - case GET_LARGEST_WINDOW: - /* Ignore dedicated windows and minibuffers. */ - if (MINI_WINDOW_P (XWINDOW (w)) - || !NILP (XWINDOW (w)->dedicated)) - break; - { - struct window *best_window_ptr = XWINDOW (best_window); - struct window *w_ptr = XWINDOW (w); - if (NILP (best_window) - || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) - > (XFASTINT (best_window_ptr->height) - * XFASTINT (best_window_ptr->width)))) - best_window = w; - } - break; - - case UNSHOW_BUFFER: - if (EQ (XWINDOW (w)->buffer, obj)) - { - /* Find another buffer to show in this window. */ - Lisp_Object another_buffer; - FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); - another_buffer = Fother_buffer (obj, Qnil); - if (NILP (another_buffer)) - another_buffer - = Fget_buffer_create (build_string ("*scratch*")); - /* If this window is dedicated, and in a frame of its own, - kill the frame. */ - if (EQ (w, FRAME_ROOT_WINDOW (f)) - && !NILP (XWINDOW (w)->dedicated) - && other_visible_frames (f)) - { - /* Skip the other windows on this frame. - There might be one, the minibuffer! */ - if (! EQ (w, last_window)) - while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) - { - /* As we go, check for the end of the loop. - We mustn't start going around a second time. */ - if (EQ (next_window, last_window)) - { - last_window = w; - break; - } - next_window = Fnext_window (next_window, - mini ? Qt : Qnil, - frame_arg); - } - /* Now we can safely delete the frame. */ - Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); - } - else - { - /* Otherwise show a different buffer in the window. */ - XWINDOW (w)->dedicated = Qnil; - Fset_window_buffer (w, another_buffer); - if (EQ (w, selected_window)) - Fset_buffer (XWINDOW (w)->buffer); - } - } - break; - } - - if (EQ (w, last_window)) - break; - - w = next_window; - } - - return best_window; -} - -DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, - "Return the window least recently selected or used for display.\n\ -If optional argument FRAME is `visible', search all visible frames.\n\ -If FRAME is 0, search all visible and iconified frames.\n\ -If FRAME is t, search all frames.\n\ -If FRAME is nil, search only the selected frame.\n\ -If FRAME is a frame, search only that frame.") - (frame) - Lisp_Object frame; -{ - register Lisp_Object w; - /* First try for a window that is full-width */ - w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); - if (!NILP (w) && !EQ (w, selected_window)) - return w; - /* If none of them, try the rest */ - return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); -} - -DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, - "Return the largest window in area.\n\ -If optional argument FRAME is `visible', search all visible frames.\n\ -If FRAME is 0, search all visible and iconified frames.\n\ -If FRAME is t, search all frames.\n\ -If FRAME is nil, search only the selected frame.\n\ -If FRAME is a frame, search only that frame.") - (frame) - Lisp_Object frame; -{ - return window_loop (GET_LARGEST_WINDOW, Qnil, 0, - frame); -} - -DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, - "Return a window currently displaying BUFFER, or nil if none.\n\ -If optional argument FRAME is `visible', search all visible frames.\n\ -If optional argument FRAME is 0, search all visible and iconified frames.\n\ -If FRAME is t, search all frames.\n\ -If FRAME is nil, search only the selected frame.\n\ -If FRAME is a frame, search only that frame.") - (buffer, frame) - Lisp_Object buffer, frame; -{ - buffer = Fget_buffer (buffer); - if (BUFFERP (buffer)) - return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); - else - return Qnil; -} - -DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, - 0, 1, "", - "Make WINDOW (or the selected window) fill its frame.\n\ -Only the frame WINDOW is on is affected.\n\ -This function tries to reduce display jumps\n\ -by keeping the text previously visible in WINDOW\n\ -in the same place on the frame. Doing this depends on\n\ -the value of (window-start WINDOW), so if calling this function\n\ -in a program gives strange scrolling, make sure the window-start\n\ -value is reasonable when this function is called.") - (window) - Lisp_Object window; -{ - struct window *w; - int startpos; - int top; - - if (NILP (window)) - window = selected_window; - else - CHECK_LIVE_WINDOW (window, 0); - - w = XWINDOW (window); - - startpos = marker_position (w->start); - top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); - - if (MINI_WINDOW_P (w) && top > 0) - error ("Can't expand minibuffer to full frame"); - - window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); - - /* Try to minimize scrolling, by setting the window start to the point - will cause the text at the old window start to be at the same place - on the frame. But don't try to do this if the window start is - outside the visible portion (as might happen when the display is - not current, due to typeahead). */ - if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) - && startpos <= BUF_ZV (XBUFFER (w->buffer))) - { - struct position pos; - struct buffer *obuf = current_buffer; - - Fset_buffer (w->buffer); - /* This computation used to temporarily move point, but that can - have unwanted side effects due to text properties. */ - pos = *vmotion (startpos, -top, w); - - Fset_marker (w->start, make_number (pos.bufpos), w->buffer); - w->start_at_line_beg = ((pos.bufpos == BEGV - || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt - : Qnil); - /* We need to do this, so that the window-scroll-functions - get called. */ - w->optional_new_start = Qt; - - set_buffer_internal (obuf); - } - return Qnil; -} - -DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, - 1, 2, "bDelete windows on (buffer): ", - "Delete all windows showing BUFFER.\n\ -Optional second argument FRAME controls which frames are affected.\n\ -If nil or omitted, delete all windows showing BUFFER in any frame.\n\ -If t, delete only windows showing BUFFER in the selected frame.\n\ -If `visible', delete all windows showing BUFFER in any visible frame.\n\ -If a frame, delete only windows showing BUFFER in that frame.") - (buffer, frame) - Lisp_Object buffer, frame; -{ - /* FRAME uses t and nil to mean the opposite of what window_loop - expects. */ - if (! FRAMEP (frame)) - frame = NILP (frame) ? Qt : Qnil; - - if (!NILP (buffer)) - { - buffer = Fget_buffer (buffer); - CHECK_BUFFER (buffer, 0); - window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); - } - return Qnil; -} - -DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, - Sreplace_buffer_in_windows, - 1, 1, "bReplace buffer in windows: ", - "Replace BUFFER with some other buffer in all windows showing it.") - (buffer) - Lisp_Object buffer; -{ - if (!NILP (buffer)) - { - buffer = Fget_buffer (buffer); - CHECK_BUFFER (buffer, 0); - window_loop (UNSHOW_BUFFER, buffer, 0, Qt); - } - return Qnil; -} - -/* Replace BUFFER with some other buffer in all windows - of all frames, even those on other keyboards. */ - -void -replace_buffer_in_all_windows (buffer) - Lisp_Object buffer; -{ -#ifdef MULTI_KBOARD - Lisp_Object tail, frame; - - /* A single call to window_loop won't do the job - because it only considers frames on the current keyboard. - So loop manually over frames, and handle each one. */ - FOR_EACH_FRAME (tail, frame) - window_loop (UNSHOW_BUFFER, buffer, 0, frame); -#else - window_loop (UNSHOW_BUFFER, buffer, 0, Qt); -#endif -} - -/* Set the height of WINDOW and all its inferiors. */ - -/* The smallest acceptable dimensions for a window. Anything smaller - might crash Emacs. */ -#define MIN_SAFE_WINDOW_WIDTH (2) -#define MIN_SAFE_WINDOW_HEIGHT (2) - -/* Make sure that window_min_height and window_min_width are - not too small; if they are, set them to safe minima. */ - -static void -check_min_window_sizes () -{ - /* Smaller values might permit a crash. */ - if (window_min_width < MIN_SAFE_WINDOW_WIDTH) - window_min_width = MIN_SAFE_WINDOW_WIDTH; - if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) - window_min_height = MIN_SAFE_WINDOW_HEIGHT; -} - -/* If *ROWS or *COLS are too small a size for FRAME, set them to the - minimum allowable size. */ -void -check_frame_size (frame, rows, cols) - FRAME_PTR frame; - int *rows, *cols; -{ - /* For height, we have to see: - whether the frame has a minibuffer, - whether it wants a mode line, and - whether it has a menu bar. */ - int min_height = - (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 - : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT - : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); - if (FRAME_MENU_BAR_LINES (frame) > 0) - min_height += FRAME_MENU_BAR_LINES (frame); - - if (*rows < min_height) - *rows = min_height; - if (*cols < MIN_SAFE_WINDOW_WIDTH) - *cols = MIN_SAFE_WINDOW_WIDTH; -} - -/* Normally the window is deleted if it gets too small. - nodelete nonzero means do not do this. - (The caller should check later and do so if appropriate) */ - -set_window_height (window, height, nodelete) - Lisp_Object window; - int height; - int nodelete; -{ - register struct window *w = XWINDOW (window); - register struct window *c; - int oheight = XFASTINT (w->height); - int top, pos, lastbot, opos, lastobot; - Lisp_Object child; - - check_min_window_sizes (); - - if (!nodelete - && ! NILP (w->parent) - && height < window_min_height) - { - Fdelete_window (window); - return; - } - - XSETFASTINT (w->last_modified, 0); - XSETFASTINT (w->last_overlay_modified, 0); - windows_or_buffers_changed++; - FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; - - XSETFASTINT (w->height, height); - if (!NILP (w->hchild)) - { - for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) - { - XWINDOW (child)->top = w->top; - set_window_height (child, height, nodelete); - } - } - else if (!NILP (w->vchild)) - { - lastbot = top = XFASTINT (w->top); - lastobot = 0; - for (child = w->vchild; !NILP (child); child = c->next) - { - c = XWINDOW (child); - - opos = lastobot + XFASTINT (c->height); - - XSETFASTINT (c->top, lastbot); - - pos = (((opos * height) << 1) + oheight) / (oheight << 1); - - /* Avoid confusion: inhibit deletion of child if becomes too small */ - set_window_height (child, pos + top - lastbot, 1); - - /* Now advance child to next window, - and set lastbot if child was not just deleted. */ - lastbot = pos + top; - lastobot = opos; - } - /* Now delete any children that became too small. */ - if (!nodelete) - for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) - { - set_window_height (child, XINT (XWINDOW (child)->height), 0); - } - } -} - -/* Recursively set width of WINDOW and its inferiors. */ - -set_window_width (window, width, nodelete) - Lisp_Object window; - int width; - int nodelete; -{ - register struct window *w = XWINDOW (window); - register struct window *c; - int owidth = XFASTINT (w->width); - int left, pos, lastright, opos, lastoright; - Lisp_Object child; - - if (!nodelete && width < window_min_width && !NILP (w->parent)) - { - Fdelete_window (window); - return; - } - - XSETFASTINT (w->last_modified, 0); - XSETFASTINT (w->last_overlay_modified, 0); - windows_or_buffers_changed++; - FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; - - XSETFASTINT (w->width, width); - if (!NILP (w->vchild)) - { - for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) - { - XWINDOW (child)->left = w->left; - set_window_width (child, width, nodelete); - } - } - else if (!NILP (w->hchild)) - { - lastright = left = XFASTINT (w->left); - lastoright = 0; - for (child = w->hchild; !NILP (child); child = c->next) - { - c = XWINDOW (child); - - opos = lastoright + XFASTINT (c->width); - - XSETFASTINT (c->left, lastright); - - pos = (((opos * width) << 1) + owidth) / (owidth << 1); - - /* Inhibit deletion for becoming too small */ - set_window_width (child, pos + left - lastright, 1); - - /* Now advance child to next window, - and set lastright if child was not just deleted. */ - lastright = pos + left, lastoright = opos; - } - /* Delete children that became too small */ - if (!nodelete) - for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) - { - set_window_width (child, XINT (XWINDOW (child)->width), 0); - } - } -} - -int window_select_count; - -Lisp_Object -Fset_window_buffer_unwind (obuf) - Lisp_Object obuf; -{ - Fset_buffer (obuf); - return Qnil; -} - -DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, - "Make WINDOW display BUFFER as its contents.\n\ -BUFFER can be a buffer or buffer name.") - (window, buffer) - register Lisp_Object window, buffer; -{ - register Lisp_Object tem; - register struct window *w = decode_window (window); - int count = specpdl_ptr - specpdl; - - buffer = Fget_buffer (buffer); - CHECK_BUFFER (buffer, 1); - - if (NILP (XBUFFER (buffer)->name)) - error ("Attempt to display deleted buffer"); - - tem = w->buffer; - if (NILP (tem)) - error ("Window is deleted"); - else if (! EQ (tem, Qt)) /* w->buffer is t when the window - is first being set up. */ - { - if (!NILP (w->dedicated) && !EQ (tem, buffer)) - error ("Window is dedicated to `%s'", - XSTRING (XBUFFER (tem)->name)->data); - - unshow_buffer (w); - } - - w->buffer = buffer; - - if (EQ (window, selected_window)) - XBUFFER (w->buffer)->last_selected_window = window; - - XSETFASTINT (w->window_end_pos, 0); - w->window_end_valid = Qnil; - XSETFASTINT (w->hscroll, 0); - Fset_marker (w->pointm, - make_number (BUF_PT (XBUFFER (buffer))), - buffer); - set_marker_restricted (w->start, - make_number (XBUFFER (buffer)->last_window_start), - buffer); - w->start_at_line_beg = Qnil; - w->force_start = Qnil; - XSETFASTINT (w->last_modified, 0); - XSETFASTINT (w->last_overlay_modified, 0); - windows_or_buffers_changed++; - - /* We must select BUFFER for running the window-scroll-functions. - If WINDOW is selected, switch permanently. - Otherwise, switch but go back to the ambient buffer afterward. */ - if (EQ (window, selected_window)) - Fset_buffer (buffer); - /* We can't check ! NILP (Vwindow_scroll_functions) here - because that might itself be a local variable. */ - else if (window_initialized) - { - record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); - Fset_buffer (buffer); - } - - if (! NILP (Vwindow_scroll_functions)) - run_hook_with_args_2 (Qwindow_scroll_functions, window, - Fmarker_position (w->start)); - - unbind_to (count, Qnil); - - return Qnil; -} - -DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, - "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ -The main editor command loop selects the buffer of the selected window\n\ -before each command.") - (window) - register Lisp_Object window; -{ - register struct window *w; - register struct window *ow = XWINDOW (selected_window); - - CHECK_LIVE_WINDOW (window, 0); - - w = XWINDOW (window); - - if (NILP (w->buffer)) - error ("Trying to select deleted window or non-leaf window"); - - XSETFASTINT (w->use_time, ++window_select_count); - if (EQ (window, selected_window)) - return window; - - Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), - ow->buffer); - - selected_window = window; - if (XFRAME (WINDOW_FRAME (w)) != selected_frame) - { - XFRAME (WINDOW_FRAME (w))->selected_window = window; - /* Use this rather than Fhandle_switch_frame - so that FRAME_FOCUS_FRAME is moved appropriately as we - move around in the state where a minibuffer in a separate - frame is active. */ - Fselect_frame (WINDOW_FRAME (w), Qnil); - } - else - selected_frame->selected_window = window; - - record_buffer (w->buffer); - Fset_buffer (w->buffer); - - XBUFFER (w->buffer)->last_selected_window = window; - - /* Go to the point recorded in the window. - This is important when the buffer is in more - than one window. It also matters when - redisplay_window has altered point after scrolling, - because it makes the change only in the window. */ - { - register int new_point = marker_position (w->pointm); - if (new_point < BEGV) - SET_PT (BEGV); - else if (new_point > ZV) - SET_PT (ZV); - else - SET_PT (new_point); - } - - windows_or_buffers_changed++; - return window; -} - -/* Deiconify the frame containing the window WINDOW, - unless it is the selected frame; - then return WINDOW. - - The reason for the exception for the selected frame - is that it seems better not to change the selected frames visibility - merely because of displaying a different buffer in it. - The deiconification is useful when a buffer gets shown in - another frame that you were not using lately. */ - -static Lisp_Object -display_buffer_1 (window) - Lisp_Object window; -{ - FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window))); - FRAME_SAMPLE_VISIBILITY (f); - if (f != selected_frame) - { - if (FRAME_ICONIFIED_P (f)) - Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); - else if (FRAME_VISIBLE_P (f)) - Fraise_frame (WINDOW_FRAME (XWINDOW (window))); - } - return window; -} - -DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, - "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ -The value is actually t if the frame should be called with default frame\n\ -parameters, and a list of frame parameters if they were specified.\n\ -See `special-display-buffer-names', and `special-display-regexps'.") - (buffer_name) - Lisp_Object buffer_name; -{ - Lisp_Object tem; - - CHECK_STRING (buffer_name, 1); - - tem = Fmember (buffer_name, Vspecial_display_buffer_names); - if (!NILP (tem)) - return Qt; - - tem = Fassoc (buffer_name, Vspecial_display_buffer_names); - if (!NILP (tem)) - return XCDR (tem); - - for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) - { - Lisp_Object car = XCAR (tem); - if (STRINGP (car) - && fast_string_match (car, buffer_name) >= 0) - return Qt; - else if (CONSP (car) - && STRINGP (XCAR (car)) - && fast_string_match (XCAR (car), buffer_name) >= 0) - return XCDR (tem); - } - return Qnil; -} - -DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, - "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ -See `same-window-buffer-names' and `same-window-regexps'.") - (buffer_name) - Lisp_Object buffer_name; -{ - Lisp_Object tem; - - CHECK_STRING (buffer_name, 1); - - tem = Fmember (buffer_name, Vsame_window_buffer_names); - if (!NILP (tem)) - return Qt; - - tem = Fassoc (buffer_name, Vsame_window_buffer_names); - if (!NILP (tem)) - return Qt; - - for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) - { - Lisp_Object car = XCAR (tem); - if (STRINGP (car) - && fast_string_match (car, buffer_name) >= 0) - return Qt; - else if (CONSP (car) - && STRINGP (XCAR (car)) - && fast_string_match (XCAR (car), buffer_name) >= 0) - return Qt; - } - return Qnil; -} - -DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, - "bDisplay buffer: \nP", - "Make BUFFER appear in some window but don't select it.\n\ -BUFFER can be a buffer or a buffer name.\n\ -If BUFFER is shown already in some window, just use that one,\n\ -unless the window is the selected window and the optional second\n\ -argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ -If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ -Returns the window displaying BUFFER.\n\ -\n\ -The variables `special-display-buffer-names', `special-display-regexps',\n\ -`same-window-buffer-names', and `same-window-regexps' customize how certain\n\ -buffer names are handled.") - (buffer, not_this_window) - register Lisp_Object buffer, not_this_window; -{ - register Lisp_Object window, tem; - - buffer = Fget_buffer (buffer); - CHECK_BUFFER (buffer, 0); - - if (!NILP (Vdisplay_buffer_function)) - return call2 (Vdisplay_buffer_function, buffer, not_this_window); - - if (NILP (not_this_window) - && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) - return display_buffer_1 (selected_window); - - /* See if the user has specified this buffer should appear - in the selected window. */ - if (NILP (not_this_window)) - { - tem = Fsame_window_p (XBUFFER (buffer)->name); - if (!NILP (tem)) - { - Fswitch_to_buffer (buffer, Qnil); - return display_buffer_1 (selected_window); - } - } - - /* If pop_up_frames, - look for a window showing BUFFER on any visible or iconified frame. - Otherwise search only the current frame. */ - if (pop_up_frames || last_nonminibuf_frame == 0) - XSETFASTINT (tem, 0); - else - XSETFRAME (tem, last_nonminibuf_frame); - window = Fget_buffer_window (buffer, tem); - if (!NILP (window) - && (NILP (not_this_window) || !EQ (window, selected_window))) - { - return display_buffer_1 (window); - } - - /* Certain buffer names get special handling. */ - if (!NILP (Vspecial_display_function)) - { - tem = Fspecial_display_p (XBUFFER (buffer)->name); - if (EQ (tem, Qt)) - return call1 (Vspecial_display_function, buffer); - if (CONSP (tem)) - return call2 (Vspecial_display_function, buffer, tem); - } - - /* If there are no frames open that have more than a minibuffer, - we need to create a new frame. */ - if (pop_up_frames || last_nonminibuf_frame == 0) - { - window = Fframe_selected_window (call0 (Vpop_up_frame_function)); - Fset_window_buffer (window, buffer); - return display_buffer_1 (window); - } - - if (pop_up_windows - || FRAME_MINIBUF_ONLY_P (selected_frame) - /* If the current frame is a special display frame, - don't try to reuse its windows. */ - || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) - ) - { - Lisp_Object frames; - - frames = Qnil; - if (FRAME_MINIBUF_ONLY_P (selected_frame)) - XSETFRAME (frames, last_nonminibuf_frame); - /* Don't try to create a window if would get an error */ - if (split_height_threshold < window_min_height << 1) - split_height_threshold = window_min_height << 1; - - /* Note that both Fget_largest_window and Fget_lru_window - ignore minibuffers and dedicated windows. - This means they can return nil. */ - - /* If the frame we would try to split cannot be split, - try other frames. */ - if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame - : last_nonminibuf_frame)) - { - /* Try visible frames first. */ - window = Fget_largest_window (Qvisible); - /* If that didn't work, try iconified frames. */ - if (NILP (window)) - window = Fget_largest_window (make_number (0)); - if (NILP (window)) - window = Fget_largest_window (Qt); - } - else - window = Fget_largest_window (frames); - - /* If we got a tall enough full-width window that can be split, - split it. */ - if (!NILP (window) - && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) - && window_height (window) >= split_height_threshold - && WINDOW_FULL_WIDTH_P (XWINDOW (window))) - window = Fsplit_window (window, Qnil, Qnil); - else - { - Lisp_Object upper, lower, other; - - window = Fget_lru_window (frames); - /* If the LRU window is selected, and big enough, - and can be split, split it. */ - if (!NILP (window) - && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) - && (EQ (window, selected_window) - || EQ (XWINDOW (window)->parent, Qnil)) - && window_height (window) >= window_min_height << 1) - window = Fsplit_window (window, Qnil, Qnil); - /* If Fget_lru_window returned nil, try other approaches. */ - /* Try visible frames first. */ - if (NILP (window)) - window = Fget_largest_window (Qvisible); - /* If that didn't work, try iconified frames. */ - if (NILP (window)) - window = Fget_largest_window (make_number (0)); - /* Try invisible frames. */ - if (NILP (window)) - window = Fget_largest_window (Qt); - /* As a last resort, make a new frame. */ - if (NILP (window)) - window = Fframe_selected_window (call0 (Vpop_up_frame_function)); - /* If window appears above or below another, - even out their heights. */ - other = upper = lower = Qnil; - if (!NILP (XWINDOW (window)->prev)) - other = upper = XWINDOW (window)->prev, lower = window; - if (!NILP (XWINDOW (window)->next)) - other = lower = XWINDOW (window)->next, upper = window; - if (!NILP (other) - /* Check that OTHER and WINDOW are vertically arrayed. */ - && XWINDOW (other)->top != XWINDOW (window)->top - && XWINDOW (other)->height > XWINDOW (window)->height) - { - int total = XWINDOW (other)->height + XWINDOW (window)->height; - Lisp_Object old_selected_window; - old_selected_window = selected_window; - - selected_window = upper; - change_window_height (total / 2 - XWINDOW (upper)->height, 0); - selected_window = old_selected_window; - } - } - } - else - window = Fget_lru_window (Qnil); - - Fset_window_buffer (window, buffer); - return display_buffer_1 (window); -} - -void -temp_output_buffer_show (buf) - register Lisp_Object buf; -{ - register struct buffer *old = current_buffer; - register Lisp_Object window; - register struct window *w; - - Fset_buffer (buf); - BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; - BEGV = BEG; - ZV = Z; - SET_PT (BEG); - XBUFFER (buf)->clip_changed = 1; - set_buffer_internal (old); - - if (!EQ (Vtemp_buffer_show_function, Qnil)) - call1 (Vtemp_buffer_show_function, buf); - else - { - window = Fdisplay_buffer (buf, Qnil); - - if (XFRAME (XWINDOW (window)->frame) != selected_frame) - Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); - Vminibuf_scroll_window = window; - w = XWINDOW (window); - XSETFASTINT (w->hscroll, 0); - set_marker_restricted (w->start, make_number (1), buf); - set_marker_restricted (w->pointm, make_number (1), buf); - - /* Run temp-buffer-show-hook, with the chosen window selected. */ - if (!NILP (Vrun_hooks)) - { - Lisp_Object tem; - tem = Fboundp (Qtemp_buffer_show_hook); - if (!NILP (tem)) - { - tem = Fsymbol_value (Qtemp_buffer_show_hook); - if (!NILP (tem)) - { - int count = specpdl_ptr - specpdl; - - /* Select the window that was chosen, for running the hook. */ - record_unwind_protect (Fset_window_configuration, - Fcurrent_window_configuration (Qnil)); - - Fselect_window (window); - call1 (Vrun_hooks, Qtemp_buffer_show_hook); - unbind_to (count, Qnil); - } - } - } - } -} - -static -make_dummy_parent (window) - Lisp_Object window; -{ - Lisp_Object new; - register struct window *o, *p; - register struct Lisp_Vector *vec; - int i; - - o = XWINDOW (window); - vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); - for (i = 0; i < VECSIZE (struct window); ++i) - vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; - vec->size = VECSIZE (struct window); - p = (struct window *)vec; - XSETWINDOW (new, p); - - XSETFASTINT (p->sequence_number, ++sequence_number); - - /* Put new into window structure in place of window */ - replace_window (window, new); - - o->next = Qnil; - o->prev = Qnil; - o->vchild = Qnil; - o->hchild = Qnil; - o->parent = new; - - p->start = Qnil; - p->pointm = Qnil; - p->buffer = Qnil; -} - -DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", - "Split WINDOW, putting SIZE lines in the first of the pair.\n\ -WINDOW defaults to selected one and SIZE to half its size.\n\ -If optional third arg HORFLAG is non-nil, split side by side\n\ -and put SIZE columns in the first of the pair.") - (window, size, horflag) - Lisp_Object window, size, horflag; -{ - register Lisp_Object new; - register struct window *o, *p; - FRAME_PTR fo; - register int size_int; - - if (NILP (window)) - window = selected_window; - else - CHECK_LIVE_WINDOW (window, 0); - - o = XWINDOW (window); - fo = XFRAME (WINDOW_FRAME (o)); - - if (NILP (size)) - { - if (!NILP (horflag)) - /* Calculate the size of the left-hand window, by dividing - the usable space in columns by two. */ - size_int = XFASTINT (o->width) >> 1; - else - size_int = XFASTINT (o->height) >> 1; - } - else - { - CHECK_NUMBER (size, 1); - size_int = XINT (size); - } - - if (MINI_WINDOW_P (o)) - error ("Attempt to split minibuffer window"); - else if (FRAME_NO_SPLIT_P (fo)) - error ("Attempt to split unsplittable frame"); - - check_min_window_sizes (); - - if (NILP (horflag)) - { - if (size_int < window_min_height) - error ("Window height %d too small (after splitting)", size_int); - if (size_int + window_min_height > XFASTINT (o->height)) - error ("Window height %d too small (after splitting)", - XFASTINT (o->height) - size_int); - if (NILP (o->parent) - || NILP (XWINDOW (o->parent)->vchild)) - { - make_dummy_parent (window); - new = o->parent; - XWINDOW (new)->vchild = window; - } - } - else - { - if (size_int < window_min_width) - error ("Window width %d too small (after splitting)", size_int); - - if (size_int + window_min_width > XFASTINT (o->width)) - error ("Window width %d too small (after splitting)", - XFASTINT (o->width) - size_int); - if (NILP (o->parent) - || NILP (XWINDOW (o->parent)->hchild)) - { - make_dummy_parent (window); - new = o->parent; - XWINDOW (new)->hchild = window; - } - } - - /* Now we know that window's parent is a vertical combination - if we are dividing vertically, or a horizontal combination - if we are making side-by-side windows */ - - windows_or_buffers_changed++; - FRAME_WINDOW_SIZES_CHANGED (fo) = 1; - new = make_window (); - p = XWINDOW (new); - - p->frame = o->frame; - p->next = o->next; - if (!NILP (p->next)) - XWINDOW (p->next)->prev = new; - p->prev = window; - o->next = new; - p->parent = o->parent; - p->buffer = Qt; - - Fset_window_buffer (new, o->buffer); - - /* Apportion the available frame space among the two new windows */ - - if (!NILP (horflag)) - { - p->height = o->height; - p->top = o->top; - XSETFASTINT (p->width, XFASTINT (o->width) - size_int); - XSETFASTINT (o->width, size_int); - XSETFASTINT (p->left, XFASTINT (o->left) + size_int); - } - else - { - p->left = o->left; - p->width = o->width; - XSETFASTINT (p->height, XFASTINT (o->height) - size_int); - XSETFASTINT (o->height, size_int); - XSETFASTINT (p->top, XFASTINT (o->top) + size_int); - } - - return new; -} - -DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", - "Make current window ARG lines bigger.\n\ -From program, optional second arg non-nil means grow sideways ARG columns.") - (arg, side) - register Lisp_Object arg, side; -{ - CHECK_NUMBER (arg, 0); - change_window_height (XINT (arg), !NILP (side)); - return Qnil; -} - -DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", - "Make current window ARG lines smaller.\n\ -From program, optional second arg non-nil means shrink sideways arg columns.") - (arg, side) - register Lisp_Object arg, side; -{ - CHECK_NUMBER (arg, 0); - change_window_height (-XINT (arg), !NILP (side)); - return Qnil; -} - -int -window_height (window) - Lisp_Object window; -{ - register struct window *p = XWINDOW (window); - return XFASTINT (p->height); -} - -int -window_width (window) - Lisp_Object window; -{ - register struct window *p = XWINDOW (window); - return XFASTINT (p->width); -} - -#define MINSIZE(w) \ - (widthflag \ - ? window_min_width \ - : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) - -#define CURBEG(w) \ - *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) - -#define CURSIZE(w) \ - *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) - -/* Unlike set_window_height, this function - also changes the heights of the siblings so as to - keep everything consistent. */ - -change_window_height (delta, widthflag) - register int delta; - int widthflag; -{ - register Lisp_Object parent; - Lisp_Object window; - register struct window *p; - int *sizep; - int (*sizefun) () = widthflag ? window_width : window_height; - register int (*setsizefun) () = (widthflag - ? set_window_width - : set_window_height); - - check_min_window_sizes (); - - window = selected_window; - while (1) - { - p = XWINDOW (window); - parent = p->parent; - if (NILP (parent)) - { - if (widthflag) - error ("No other window to side of this one"); - break; - } - if (widthflag ? !NILP (XWINDOW (parent)->hchild) - : !NILP (XWINDOW (parent)->vchild)) - break; - window = parent; - } - - sizep = &CURSIZE (window); - - { - register int maxdelta; - - maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep - : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) - : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) - /* This is a frame with only one window, a minibuffer-only - or a minibufferless frame. */ - : (delta = 0)); - - if (delta > maxdelta) - /* This case traps trying to make the minibuffer - the full frame, or make the only window aside from the - minibuffer the full frame. */ - delta = maxdelta; - } - - if (*sizep + delta < MINSIZE (window)) - { - Fdelete_window (window); - return; - } - - if (delta == 0) - return; - - if (!NILP (p->next) - && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) - { - (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); - (*setsizefun) (window, *sizep + delta, 0); - CURBEG (p->next) += delta; - /* This does not change size of p->next, - but it propagates the new top edge to its children */ - (*setsizefun) (p->next, (*sizefun) (p->next), 0); - } - else if (!NILP (p->prev) - && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) - { - (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); - CURBEG (window) -= delta; - (*setsizefun) (window, *sizep + delta, 0); - } - else - { - register int delta1; - register int opht = (*sizefun) (parent); - - /* If trying to grow this window to or beyond size of the parent, - make delta1 so big that, on shrinking back down, - all the siblings end up with less than one line and are deleted. */ - if (opht <= *sizep + delta) - delta1 = opht * opht * 2; - /* Otherwise, make delta1 just right so that if we add delta1 - lines to this window and to the parent, and then shrink - the parent back to its original size, the new proportional - size of this window will increase by delta. */ - else - delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); - - /* Add delta1 lines or columns to this window, and to the parent, - keeping things consistent while not affecting siblings. */ - CURSIZE (parent) = opht + delta1; - (*setsizefun) (window, *sizep + delta1, 0); - - /* Squeeze out delta1 lines or columns from our parent, - shriking this window and siblings proportionately. - This brings parent back to correct size. - Delta1 was calculated so this makes this window the desired size, - taking it all out of the siblings. */ - (*setsizefun) (parent, opht, 0); - } - - XSETFASTINT (p->last_modified, 0); - XSETFASTINT (p->last_overlay_modified, 0); -} -#undef MINSIZE -#undef CURBEG -#undef CURSIZE - - -/* Return number of lines of text (not counting mode line) in W. */ - -int -window_internal_height (w) - struct window *w; -{ - int ht = XFASTINT (w->height); - - if (MINI_WINDOW_P (w)) - return ht; - - if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) - || !NILP (w->next) || !NILP (w->prev) - || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) - return ht - 1; - - return ht; -} - - -/* Return the number of columns in W. - Don't count columns occupied by scroll bars or the vertical bar - separating W from the sibling to its right. */ -int -window_internal_width (w) - struct window *w; -{ - FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); - int width = XINT (w->width); - - /* Scroll bars occupy a few columns. */ - if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) - return width - FRAME_SCROLL_BAR_COLS (f); - - /* The column of `|' characters separating side-by-side windows - occupies one column only. */ - if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) - return width - 1; - - return width; -} - - -/* Scroll contents of window WINDOW up N lines. - If WHOLE is nonzero, it means we wanted to scroll - by entire screenfuls. */ - -static void -window_scroll (window, n, whole, noerror) - Lisp_Object window; - int n; - int whole; - int noerror; -{ - register struct window *w = XWINDOW (window); - register int opoint = PT; - register int pos; - register int ht = window_internal_height (w); - register Lisp_Object tem; - int lose; - Lisp_Object bolp, nmoved; - int startpos; - struct position posit; - int original_vpos; - - startpos = marker_position (w->start); - - posit = *compute_motion (startpos, 0, 0, 0, - PT, ht, 0, - window_internal_width (w), XINT (w->hscroll), - 0, w); - original_vpos = posit.vpos; - - XSETFASTINT (tem, PT); - tem = Fpos_visible_in_window_p (tem, window); - - if (NILP (tem)) - { - Fvertical_motion (make_number (- (ht / 2)), window); - startpos = PT; - } - - SET_PT (startpos); - lose = n < 0 && PT == BEGV; - Fvertical_motion (make_number (n), window); - pos = PT; - bolp = Fbolp (); - SET_PT (opoint); - - if (lose) - { - if (noerror) - return; - else - Fsignal (Qbeginning_of_buffer, Qnil); - } - - if (pos < ZV) - { - extern int scroll_margin; - - int this_scroll_margin = scroll_margin; - - /* Don't use a scroll margin that is negative or too large. */ - if (this_scroll_margin < 0) - this_scroll_margin = 0; - - if (XINT (w->height) < 4 * scroll_margin) - this_scroll_margin = XINT (w->height) / 4; - - set_marker_restricted (w->start, make_number (pos), w->buffer); - w->start_at_line_beg = bolp; - w->update_mode_line = Qt; - XSETFASTINT (w->last_modified, 0); - XSETFASTINT (w->last_overlay_modified, 0); - /* Set force_start so that redisplay_window will run - the window-scroll-functions. */ - w->force_start = Qt; - - if (whole) - { - SET_PT (pos); - Fvertical_motion (make_number (original_vpos), window); - } - /* If we scrolled forward, put point enough lines down - that it is outside the scroll margin. */ - else if (n > 0) - { - int top_margin; - - if (this_scroll_margin > 0) - { - SET_PT (pos); - Fvertical_motion (make_number (this_scroll_margin), window); - top_margin = PT; - } - else - top_margin = pos; - - if (top_margin <= opoint) - SET_PT (opoint); - else - { - SET_PT (pos); - Fvertical_motion (make_number (original_vpos), window); - } - } - else if (n < 0) - { - int bottom_margin; - - /* If we scrolled backward, put point near the end of the window - but not within the scroll margin. */ - SET_PT (pos); - tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); - if (XFASTINT (tem) == ht - this_scroll_margin) - bottom_margin = PT; - else - bottom_margin = PT + 1; - - if (bottom_margin > opoint) - SET_PT (opoint); - else - { - SET_PT (pos); - Fvertical_motion (make_number (original_vpos), window); - } - } - } - else - { - if (noerror) - return; - else - Fsignal (Qend_of_buffer, Qnil); - } -} - -/* This is the guts of Fscroll_up and Fscroll_down. */ - -static void -scroll_command (n, direction) - register Lisp_Object n; - int direction; -{ - register int defalt; - int count = specpdl_ptr - specpdl; - - /* If selected window's buffer isn't current, make it current for the moment. - But don't screw up if window_scroll gets an error. */ - if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) - { - record_unwind_protect (save_excursion_restore, save_excursion_save ()); - Fset_buffer (XWINDOW (selected_window)->buffer); - } - - defalt = (window_internal_height (XWINDOW (selected_window)) - - next_screen_context_lines); - defalt = direction * (defalt < 1 ? 1 : defalt); - - if (NILP (n)) - window_scroll (selected_window, defalt, 1, 0); - else if (EQ (n, Qminus)) - window_scroll (selected_window, - defalt, 1, 0); - else - { - n = Fprefix_numeric_value (n); - window_scroll (selected_window, XINT (n) * direction, 0, 0); - } - - unbind_to (count, Qnil); -} - -DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", - "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ -A near full screen is `next-screen-context-lines' less than a full screen.\n\ -Negative ARG means scroll downward.\n\ -When calling from a program, supply a number as argument or nil.") - (arg) - Lisp_Object arg; -{ - scroll_command (arg, 1); - return Qnil; -} - -DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", - "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ -A near full screen is `next-screen-context-lines' less than a full screen.\n\ -Negative ARG means scroll upward.\n\ -When calling from a program, supply a number as argument or nil.") - (arg) - Lisp_Object arg; -{ - scroll_command (arg, -1); - return Qnil; -} - -DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, - "Return the other window for \"other window scroll\" commands.\n\ -If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ -specifies the window.\n\ -If `other-window-scroll-buffer' is non-nil, a window\n\ -showing that buffer is used.") - () -{ - Lisp_Object window; - - if (MINI_WINDOW_P (XWINDOW (selected_window)) - && !NILP (Vminibuf_scroll_window)) - window = Vminibuf_scroll_window; - /* If buffer is specified, scroll that buffer. */ - else if (!NILP (Vother_window_scroll_buffer)) - { - window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); - if (NILP (window)) - window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); - } - else - { - /* Nothing specified; look for a neighboring window on the same - frame. */ - window = Fnext_window (selected_window, Qnil, Qnil); - - if (EQ (window, selected_window)) - /* That didn't get us anywhere; look for a window on another - visible frame. */ - do - window = Fnext_window (window, Qnil, Qt); - while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) - && ! EQ (window, selected_window)); - } - - CHECK_LIVE_WINDOW (window, 0); - - if (EQ (window, selected_window)) - error ("There is no other window"); - - return window; -} - -DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", - "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ -The next window is the one below the current one; or the one at the top\n\ -if the current one is at the bottom. Negative ARG means scroll downward.\n\ -When calling from a program, supply a number as argument or nil.\n\ -\n\ -If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ -specifies the window to scroll.\n\ -If `other-window-scroll-buffer' is non-nil, scroll the window\n\ -showing that buffer, popping the buffer up if necessary.") - (arg) - register Lisp_Object arg; -{ - register Lisp_Object window; - register int defalt; - register struct window *w; - register int count = specpdl_ptr - specpdl; - - window = Fother_window_for_scrolling (); - - w = XWINDOW (window); - defalt = window_internal_height (w) - next_screen_context_lines; - if (defalt < 1) defalt = 1; - - /* Don't screw up if window_scroll gets an error. */ - record_unwind_protect (save_excursion_restore, save_excursion_save ()); - - Fset_buffer (w->buffer); - SET_PT (marker_position (w->pointm)); - - if (NILP (arg)) - window_scroll (window, defalt, 1, 1); - else if (EQ (arg, Qminus)) - window_scroll (window, -defalt, 1, 1); - else - { - if (CONSP (arg)) - arg = Fcar (arg); - CHECK_NUMBER (arg, 0); - window_scroll (window, XINT (arg), 0, 1); - } - - Fset_marker (w->pointm, make_number (PT), Qnil); - unbind_to (count, Qnil); - - return Qnil; -} - -DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", - "Scroll selected window display ARG columns left.\n\ -Default for ARG is window width minus 2.") - (arg) - register Lisp_Object arg; -{ - - if (NILP (arg)) - XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); - else - arg = Fprefix_numeric_value (arg); - - return - Fset_window_hscroll (selected_window, - make_number (XINT (XWINDOW (selected_window)->hscroll) - + XINT (arg))); -} - -DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", - "Scroll selected window display ARG columns right.\n\ -Default for ARG is window width minus 2.") - (arg) - register Lisp_Object arg; -{ - if (NILP (arg)) - XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); - else - arg = Fprefix_numeric_value (arg); - - return - Fset_window_hscroll (selected_window, - make_number (XINT (XWINDOW (selected_window)->hscroll) - - XINT (arg))); -} - -DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", - "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ -The desired position of point is always relative to the current window.\n\ -Just C-u as prefix means put point in the center of the window.\n\ -If ARG is omitted or nil, erases the entire frame and then\n\ -redraws with point in the center of the current window.") - (arg) - register Lisp_Object arg; -{ - register struct window *w = XWINDOW (selected_window); - register int ht = window_internal_height (w); - struct position pos; - - if (NILP (arg)) - { - extern int frame_garbaged; - - SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); - XSETFASTINT (arg, ht / 2); - } - else if (CONSP (arg)) /* Just C-u. */ - { - XSETFASTINT (arg, ht / 2); - } - else - { - arg = Fprefix_numeric_value (arg); - CHECK_NUMBER (arg, 0); - } - - if (XINT (arg) < 0) - XSETINT (arg, XINT (arg) + ht); - - pos = *vmotion (PT, - XINT (arg), w); - - Fset_marker (w->start, make_number (pos.bufpos), w->buffer); - w->start_at_line_beg = ((pos.bufpos == BEGV - || FETCH_CHAR (pos.bufpos - 1) == '\n') - ? Qt : Qnil); - w->force_start = Qt; - - return Qnil; -} - -DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, - 1, 1, "P", - "Position point relative to window.\n\ -With no argument, position point at center of window.\n\ -An argument specifies frame line; zero means top of window,\n\ -negative means relative to bottom of window.") - (arg) - register Lisp_Object arg; -{ - register struct window *w = XWINDOW (selected_window); - register int height = window_internal_height (w); - register int start; - Lisp_Object window; - - if (NILP (arg)) - XSETFASTINT (arg, height / 2); - else - { - arg = Fprefix_numeric_value (arg); - if (XINT (arg) < 0) - XSETINT (arg, XINT (arg) + height); - } - - start = marker_position (w->start); - XSETWINDOW (window, w); - if (start < BEGV || start > ZV) - { - Fvertical_motion (make_number (- (height / 2)), window); - Fset_marker (w->start, make_number (PT), w->buffer); - w->start_at_line_beg = Fbolp (); - w->force_start = Qt; - } - else - SET_PT (start); - - return Fvertical_motion (arg, window); -} - -struct save_window_data - { - EMACS_INT size_from_Lisp_Vector_struct; - struct Lisp_Vector *next_from_Lisp_Vector_struct; - Lisp_Object frame_width, frame_height, frame_menu_bar_lines; - Lisp_Object selected_frame; - Lisp_Object current_window; - Lisp_Object current_buffer; - Lisp_Object minibuf_scroll_window; - Lisp_Object root_window; - Lisp_Object focus_frame; - /* Record the values of window-min-width and window-min-height - so that window sizes remain consistent with them. */ - Lisp_Object min_width, min_height; - /* A vector, interpreted as a struct saved_window */ - Lisp_Object saved_windows; - }; - -/* This is saved as a Lisp_Vector */ -struct saved_window - { - /* these first two must agree with struct Lisp_Vector in lisp.h */ - EMACS_INT size_from_Lisp_Vector_struct; - struct Lisp_Vector *next_from_Lisp_Vector_struct; - - Lisp_Object window; - Lisp_Object buffer, start, pointm, mark; - Lisp_Object left, top, width, height, hscroll; - Lisp_Object parent, prev; - Lisp_Object start_at_line_beg; - Lisp_Object display_table; - }; -#define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ - -#define SAVED_WINDOW_N(swv,n) \ - ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) - -DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, - "T if OBJECT is a window-configuration object.") - (object) - Lisp_Object object; -{ - if (WINDOW_CONFIGURATIONP (object)) - return Qt; - return Qnil; -} - - -DEFUN ("set-window-configuration", Fset_window_configuration, - Sset_window_configuration, 1, 1, 0, - "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ -CONFIGURATION must be a value previously returned\n\ -by `current-window-configuration' (which see).") - (configuration) - Lisp_Object configuration; -{ - register struct save_window_data *data; - struct Lisp_Vector *saved_windows; - Lisp_Object new_current_buffer; - Lisp_Object frame; - FRAME_PTR f; - - while (!WINDOW_CONFIGURATIONP (configuration)) - { - configuration = wrong_type_argument (intern ("window-configuration-p"), - configuration); - } - - data = (struct save_window_data *) XVECTOR (configuration); - saved_windows = XVECTOR (data->saved_windows); - - new_current_buffer = data->current_buffer; - if (NILP (XBUFFER (new_current_buffer)->name)) - new_current_buffer = Qnil; - - frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; - f = XFRAME (frame); - - /* If f is a dead frame, don't bother rebuilding its window tree. - However, there is other stuff we should still try to do below. */ - if (FRAME_LIVE_P (f)) - { - register struct window *w; - register struct saved_window *p; - int k; - - /* If the frame has been resized since this window configuration was - made, we change the frame to the size specified in the - configuration, restore the configuration, and then resize it - back. We keep track of the prevailing height in these variables. */ - int previous_frame_height = FRAME_HEIGHT (f); - int previous_frame_width = FRAME_WIDTH (f); - int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); - - if (XFASTINT (data->frame_height) != previous_frame_height - || XFASTINT (data->frame_width) != previous_frame_width) - change_frame_size (f, data->frame_height, data->frame_width, 0, 0); -#if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) - if (XFASTINT (data->frame_menu_bar_lines) - != previous_frame_menu_bar_lines) - x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); -#endif - - windows_or_buffers_changed++; - FRAME_WINDOW_SIZES_CHANGED (f) = 1; - - /* Temporarily avoid any problems with windows that are smaller - than they are supposed to be. */ - window_min_height = 1; - window_min_width = 1; - - /* Kludge Alert! - Mark all windows now on frame as "deleted". - Restoring the new configuration "undeletes" any that are in it. - - Save their current buffers in their height fields, since we may - need it later, if a buffer saved in the configuration is now - dead. */ - delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); - - for (k = 0; k < saved_windows->size; k++) - { - p = SAVED_WINDOW_N (saved_windows, k); - w = XWINDOW (p->window); - w->next = Qnil; - - if (!NILP (p->parent)) - w->parent = SAVED_WINDOW_N (saved_windows, - XFASTINT (p->parent))->window; - else - w->parent = Qnil; - - if (!NILP (p->prev)) - { - w->prev = SAVED_WINDOW_N (saved_windows, - XFASTINT (p->prev))->window; - XWINDOW (w->prev)->next = p->window; - } - else - { - w->prev = Qnil; - if (!NILP (w->parent)) - { - if (EQ (p->width, XWINDOW (w->parent)->width)) - { - XWINDOW (w->parent)->vchild = p->window; - XWINDOW (w->parent)->hchild = Qnil; - } - else - { - XWINDOW (w->parent)->hchild = p->window; - XWINDOW (w->parent)->vchild = Qnil; - } - } - } - - /* If we squirreled away the buffer in the window's height, - restore it now. */ - if (BUFFERP (w->height)) - w->buffer = w->height; - w->left = p->left; - w->top = p->top; - w->width = p->width; - w->height = p->height; - w->hscroll = p->hscroll; - w->display_table = p->display_table; - XSETFASTINT (w->last_modified, 0); - XSETFASTINT (w->last_overlay_modified, 0); - - /* Reinstall the saved buffer and pointers into it. */ - if (NILP (p->buffer)) - w->buffer = p->buffer; - else - { - if (!NILP (XBUFFER (p->buffer)->name)) - /* If saved buffer is alive, install it. */ - { - w->buffer = p->buffer; - w->start_at_line_beg = p->start_at_line_beg; - set_marker_restricted (w->start, - Fmarker_position (p->start), - w->buffer); - set_marker_restricted (w->pointm, - Fmarker_position (p->pointm), - w->buffer); - Fset_marker (XBUFFER (w->buffer)->mark, - Fmarker_position (p->mark), w->buffer); - - /* As documented in Fcurrent_window_configuration, don't - save the location of point in the buffer which was current - when the window configuration was recorded. */ - if (!EQ (p->buffer, new_current_buffer) - && XBUFFER (p->buffer) == current_buffer) - Fgoto_char (w->pointm); - } - else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) - /* Else unless window has a live buffer, get one. */ - { - w->buffer = Fcdr (Fcar (Vbuffer_alist)); - /* This will set the markers to beginning of visible - range. */ - set_marker_restricted (w->start, make_number (0), w->buffer); - set_marker_restricted (w->pointm, make_number (0),w->buffer); - w->start_at_line_beg = Qt; - } - else - /* Keeping window's old buffer; make sure the markers - are real. */ - { - /* Set window markers at start of visible range. */ - if (XMARKER (w->start)->buffer == 0) - set_marker_restricted (w->start, make_number (0), - w->buffer); - if (XMARKER (w->pointm)->buffer == 0) - set_marker_restricted (w->pointm, - (make_number - (BUF_PT (XBUFFER (w->buffer)))), - w->buffer); - w->start_at_line_beg = Qt; - } - } - } - - FRAME_ROOT_WINDOW (f) = data->root_window; - Fselect_window (data->current_window); - - if (NILP (data->focus_frame) - || (FRAMEP (data->focus_frame) - && FRAME_LIVE_P (XFRAME (data->focus_frame)))) - Fredirect_frame_focus (frame, data->focus_frame); - -#if 0 /* I don't understand why this is needed, and it causes problems - when the frame's old selected window has been deleted. */ - if (f != selected_frame && FRAME_WINDOW_P (f)) - do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), - Qnil, 0); -#endif - - /* Set the screen height to the value it had before this function. */ - if (previous_frame_height != FRAME_HEIGHT (f) - || previous_frame_width != FRAME_WIDTH (f)) - change_frame_size (f, previous_frame_height, previous_frame_width, - 0, 0); -#if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) - if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) - x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); -#endif - } - - /* Restore the minimum heights recorded in the configuration. */ - window_min_height = XINT (data->min_height); - window_min_width = XINT (data->min_width); - - /* Fselect_window will have made f the selected frame, so we - reselect the proper frame here. Fhandle_switch_frame will change the - selected window too, but that doesn't make the call to - Fselect_window above totally superfluous; it still sets f's - selected window. */ - if (FRAME_LIVE_P (XFRAME (data->selected_frame))) - do_switch_frame (data->selected_frame, Qnil, 0); - - if (!NILP (new_current_buffer)) - Fset_buffer (new_current_buffer); - - Vminibuf_scroll_window = data->minibuf_scroll_window; - return (Qnil); -} - -/* Mark all windows now on frame as deleted - by setting their buffers to nil. */ - -void -delete_all_subwindows (w) - register struct window *w; -{ - if (!NILP (w->next)) - delete_all_subwindows (XWINDOW (w->next)); - if (!NILP (w->vchild)) - delete_all_subwindows (XWINDOW (w->vchild)); - if (!NILP (w->hchild)) - delete_all_subwindows (XWINDOW (w->hchild)); - - w->height = w->buffer; /* See Fset_window_configuration for excuse. */ - - if (!NILP (w->buffer)) - unshow_buffer (w); - - /* We set all three of these fields to nil, to make sure that we can - distinguish this dead window from any live window. Live leaf - windows will have buffer set, and combination windows will have - vchild or hchild set. */ - w->buffer = Qnil; - w->vchild = Qnil; - w->hchild = Qnil; -} - -static int -count_windows (window) - register struct window *window; -{ - register int count = 1; - if (!NILP (window->next)) - count += count_windows (XWINDOW (window->next)); - if (!NILP (window->vchild)) - count += count_windows (XWINDOW (window->vchild)); - if (!NILP (window->hchild)) - count += count_windows (XWINDOW (window->hchild)); - return count; -} - -static int -save_window_save (window, vector, i) - Lisp_Object window; - struct Lisp_Vector *vector; - int i; -{ - register struct saved_window *p; - register struct window *w; - register Lisp_Object tem; - - for (;!NILP (window); window = w->next) - { - p = SAVED_WINDOW_N (vector, i); - w = XWINDOW (window); - - XSETFASTINT (w->temslot, i++); - p->window = window; - p->buffer = w->buffer; - p->left = w->left; - p->top = w->top; - p->width = w->width; - p->height = w->height; - p->hscroll = w->hscroll; - p->display_table = w->display_table; - if (!NILP (w->buffer)) - { - /* Save w's value of point in the window configuration. - If w is the selected window, then get the value of point - from the buffer; pointm is garbage in the selected window. */ - if (EQ (window, selected_window)) - { - p->pointm = Fmake_marker (); - Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), - w->buffer); - } - else - p->pointm = Fcopy_marker (w->pointm, Qnil); - - p->start = Fcopy_marker (w->start, Qnil); - p->start_at_line_beg = w->start_at_line_beg; - - tem = XBUFFER (w->buffer)->mark; - p->mark = Fcopy_marker (tem, Qnil); - } - else - { - p->pointm = Qnil; - p->start = Qnil; - p->mark = Qnil; - p->start_at_line_beg = Qnil; - } - - if (NILP (w->parent)) - p->parent = Qnil; - else - p->parent = XWINDOW (w->parent)->temslot; - - if (NILP (w->prev)) - p->prev = Qnil; - else - p->prev = XWINDOW (w->prev)->temslot; - - if (!NILP (w->vchild)) - i = save_window_save (w->vchild, vector, i); - if (!NILP (w->hchild)) - i = save_window_save (w->hchild, vector, i); - } - - return i; -} - -DEFUN ("current-window-configuration", Fcurrent_window_configuration, - Scurrent_window_configuration, 0, 1, 0, - "Return an object representing the current window configuration of FRAME.\n\ -If FRAME is nil or omitted, use the selected frame.\n\ -This describes the number of windows, their sizes and current buffers,\n\ -and for each displayed buffer, where display starts, and the positions of\n\ -point and mark. An exception is made for point in the current buffer:\n\ -its value is -not- saved.\n\ -This also records the currently selected frame, and FRAME's focus\n\ -redirection (see `redirect-frame-focus').") - (frame) - Lisp_Object frame; -{ - register Lisp_Object tem; - register int n_windows; - register struct save_window_data *data; - register struct Lisp_Vector *vec; - register int i; - FRAME_PTR f; - - if (NILP (frame)) - f = selected_frame; - else - { - CHECK_LIVE_FRAME (frame, 0); - f = XFRAME (frame); - } - - n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); - vec = allocate_vectorlike (VECSIZE (struct save_window_data)); - for (i = 0; i < VECSIZE (struct save_window_data); i++) - vec->contents[i] = Qnil; - vec->size = VECSIZE (struct save_window_data); - data = (struct save_window_data *)vec; - - XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); - XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); - XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); - XSETFRAME (data->selected_frame, selected_frame); - data->current_window = FRAME_SELECTED_WINDOW (f); - XSETBUFFER (data->current_buffer, current_buffer); - data->minibuf_scroll_window = Vminibuf_scroll_window; - data->root_window = FRAME_ROOT_WINDOW (f); - data->focus_frame = FRAME_FOCUS_FRAME (f); - XSETINT (data->min_height, window_min_height); - XSETINT (data->min_width, window_min_width); - tem = Fmake_vector (make_number (n_windows), Qnil); - data->saved_windows = tem; - for (i = 0; i < n_windows; i++) - XVECTOR (tem)->contents[i] - = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); - save_window_save (FRAME_ROOT_WINDOW (f), - XVECTOR (tem), 0); - XSETWINDOW_CONFIGURATION (tem, data); - return (tem); -} - -DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, - 0, UNEVALLED, 0, - "Execute body, preserving window sizes and contents.\n\ -Restore which buffer appears in which window, where display starts,\n\ -and the value of point and mark for each window.\n\ -Also restore which buffer is current.\n\ -But do not preserve point in the current buffer.\n\ -Does not restore the value of point in current buffer.") - (args) - Lisp_Object args; -{ - register Lisp_Object val; - register int count = specpdl_ptr - specpdl; - - record_unwind_protect (Fset_window_configuration, - Fcurrent_window_configuration (Qnil)); - val = Fprogn (args); - return unbind_to (count, val); -} - -init_window_once () -{ - selected_frame = make_terminal_frame (); - XSETFRAME (Vterminal_frame, selected_frame); - minibuf_window = selected_frame->minibuffer_window; - selected_window = selected_frame->selected_window; - last_nonminibuf_frame = selected_frame; - - window_initialized = 1; -} - -syms_of_window () -{ - Qwindowp = intern ("windowp"); - staticpro (&Qwindowp); - - Qwindow_live_p = intern ("window-live-p"); - staticpro (&Qwindow_live_p); - - Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); - staticpro (&Qtemp_buffer_show_hook); - - DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, - "Non-nil means call as function to display a help buffer.\n\ -The function is called with one argument, the buffer to be displayed.\n\ -Used by `with-output-to-temp-buffer'.\n\ -If this function is used, then it must do the entire job of showing\n\ -the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); - Vtemp_buffer_show_function = Qnil; - - DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, - "If non-nil, function to call to handle `display-buffer'.\n\ -It will receive two args, the buffer and a flag which if non-nil means\n\ - that the currently selected window is not acceptable.\n\ -Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ -work using this function."); - Vdisplay_buffer_function = Qnil; - - DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, - "Non-nil means it is the window that C-M-v in minibuffer should scroll."); - Vminibuf_scroll_window = Qnil; - - DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, - "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); - Vother_window_scroll_buffer = Qnil; - - DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, - "*Non-nil means `display-buffer' should make a separate frame."); - pop_up_frames = 0; - - DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, - "Function to call to handle automatic new frame creation.\n\ -It is called with no arguments and should return a newly created frame.\n\ -\n\ -A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ -where `pop-up-frame-alist' would hold the default frame parameters."); - Vpop_up_frame_function = Qnil; - - DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, - "*List of buffer names that should have their own special frames.\n\ -Displaying a buffer whose name is in this list makes a special frame for it\n\ -using `special-display-function'. See also `special-display-regexps'.\n\ -\n\ -An element of the list can be a list instead of just a string.\n\ -There are two ways to use a list as an element:\n\ - (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ -In the first case, FRAME-PARAMETERS are used to create the frame.\n\ -In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ -followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ -All this is done by the function found in `special-display-function'."); - Vspecial_display_buffer_names = Qnil; - - DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, - "*List of regexps saying which buffers should have their own special frames.\n\ -If a buffer name matches one of these regexps, it gets its own frame.\n\ -Displaying a buffer whose name is in this list makes a special frame for it\n\ -using `special-display-function'.\n\ -\n\ -An element of the list can be a list instead of just a string.\n\ -There are two ways to use a list as an element:\n\ - (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ -In the first case, FRAME-PARAMETERS are used to create the frame.\n\ -In the latter case, FUNCTION is called with the buffer as first argument,\n\ -followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ -All this is done by the function found in `special-display-function'."); - Vspecial_display_regexps = Qnil; - - DEFVAR_LISP ("special-display-function", &Vspecial_display_function, - "Function to call to make a new frame for a special buffer.\n\ -It is called with two arguments, the buffer and optional buffer specific\n\ -data, and should return a window displaying that buffer.\n\ -The default value makes a separate frame for the buffer,\n\ -using `special-display-frame-alist' to specify the frame parameters.\n\ -\n\ -A buffer is special if its is listed in `special-display-buffer-names'\n\ -or matches a regexp in `special-display-regexps'."); - Vspecial_display_function = Qnil; - - DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, - "*List of buffer names that should appear in the selected window.\n\ -Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ -switches to it in the selected window, rather than making it appear\n\ -in some other window.\n\ -\n\ -An element of the list can be a cons cell instead of just a string.\n\ -Then the car must be a string, which specifies the buffer name.\n\ -This is for compatibility with `special-display-buffer-names';\n\ -the cdr of the cons cell is ignored.\n\ -\n\ -See also `same-window-regexps'."); - Vsame_window_buffer_names = Qnil; - - DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, - "*List of regexps saying which buffers should appear in the selected window.\n\ -If a buffer name matches one of these regexps, then displaying it\n\ -using `display-buffer' or `pop-to-buffer' switches to it\n\ -in the selected window, rather than making it appear in some other window.\n\ -\n\ -An element of the list can be a cons cell instead of just a string.\n\ -Then the car must be a string, which specifies the buffer name.\n\ -This is for compatibility with `special-display-buffer-names';\n\ -the cdr of the cons cell is ignored.\n\ -\n\ -See also `same-window-buffer-names'."); - Vsame_window_regexps = Qnil; - - DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, - "*Non-nil means display-buffer should make new windows."); - pop_up_windows = 1; - - DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, - "*Number of lines of continuity when scrolling by screenfuls."); - next_screen_context_lines = 2; - - DEFVAR_INT ("split-height-threshold", &split_height_threshold, - "*display-buffer would prefer to split the largest window if this large.\n\ -If there is only one window, it is split regardless of this value."); - split_height_threshold = 500; - - DEFVAR_INT ("window-min-height", &window_min_height, - "*Delete any window less than this tall (including its mode line)."); - window_min_height = 4; - - DEFVAR_INT ("window-min-width", &window_min_width, - "*Delete any window less than this wide."); - window_min_width = 10; - - defsubr (&Sselected_window); - defsubr (&Sminibuffer_window); - defsubr (&Swindow_minibuffer_p); - defsubr (&Swindowp); - defsubr (&Swindow_live_p); - defsubr (&Spos_visible_in_window_p); - defsubr (&Swindow_buffer); - defsubr (&Swindow_height); - defsubr (&Swindow_width); - defsubr (&Swindow_hscroll); - defsubr (&Sset_window_hscroll); - defsubr (&Swindow_redisplay_end_trigger); - defsubr (&Sset_window_redisplay_end_trigger); - defsubr (&Swindow_edges); - defsubr (&Scoordinates_in_window_p); - defsubr (&Swindow_at); - defsubr (&Swindow_point); - defsubr (&Swindow_start); - defsubr (&Swindow_end); - defsubr (&Sset_window_point); - defsubr (&Sset_window_start); - defsubr (&Swindow_dedicated_p); - defsubr (&Sset_window_dedicated_p); - defsubr (&Swindow_display_table); - defsubr (&Sset_window_display_table); - defsubr (&Snext_window); - defsubr (&Sprevious_window); - defsubr (&Sother_window); - defsubr (&Sget_lru_window); - defsubr (&Sget_largest_window); - defsubr (&Sget_buffer_window); - defsubr (&Sdelete_other_windows); - defsubr (&Sdelete_windows_on); - defsubr (&Sreplace_buffer_in_windows); - defsubr (&Sdelete_window); - defsubr (&Sset_window_buffer); - defsubr (&Sselect_window); - defsubr (&Sspecial_display_p); - defsubr (&Ssame_window_p); - defsubr (&Sdisplay_buffer); - defsubr (&Ssplit_window); - defsubr (&Senlarge_window); - defsubr (&Sshrink_window); - defsubr (&Sscroll_up); - defsubr (&Sscroll_down); - defsubr (&Sscroll_left); - defsubr (&Sscroll_right); - defsubr (&Sother_window_for_scrolling); - defsubr (&Sscroll_other_window); - defsubr (&Srecenter); - defsubr (&Smove_to_window_line); - defsubr (&Swindow_configuration_p); - defsubr (&Sset_window_configuration); - defsubr (&Scurrent_window_configuration); - defsubr (&Ssave_window_excursion); -} - -keys_of_window () -{ - initial_define_key (control_x_map, '1', "delete-other-windows"); - initial_define_key (control_x_map, '2', "split-window"); - initial_define_key (control_x_map, '0', "delete-window"); - initial_define_key (control_x_map, 'o', "other-window"); - initial_define_key (control_x_map, '^', "enlarge-window"); - initial_define_key (control_x_map, '<', "scroll-left"); - initial_define_key (control_x_map, '>', "scroll-right"); - - initial_define_key (global_map, Ctl ('V'), "scroll-up"); - initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); - initial_define_key (meta_map, 'v', "scroll-down"); - - initial_define_key (global_map, Ctl('L'), "recenter"); - initial_define_key (meta_map, 'r', "move-to-window-line"); -} |