/* Window creation, deletion and examination for GNU Emacs.
Does not include redisplay.
- Copyright (C) 1985,86,87,93,94,95,96,97,1998 Free Software Foundation, Inc.
+ Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <config.h>
#include "lisp.h"
#include "buffer.h"
+#include "keyboard.h"
#include "frame.h"
#include "window.h"
#include "commands.h"
#include "indent.h"
#include "termchar.h"
#include "disptab.h"
-#include "keyboard.h"
-#include "blockinput.h"
#include "dispextern.h"
+#include "blockinput.h"
+#include "intervals.h"
+
#ifdef HAVE_X_WINDOWS
#include "xterm.h"
+#endif /* HAVE_X_WINDOWS */
+#ifdef WINDOWSNT
+#include "w32term.h"
+#endif
+#ifdef MSDOS
+#include "msdos.h"
+#endif
+#ifdef macintosh
+#include "macterm.h"
+#endif
+
+#ifndef max
+#define max(a, b) ((a) < (b) ? (b) : (a))
#endif
-Lisp_Object Qwindowp, Qwindow_live_p;
+
+Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p;
+Lisp_Object Qwindow_size_fixed, Qleft_bitmap_area, Qright_bitmap_area;
+extern Lisp_Object Qheight, Qwidth;
static struct window *decode_window P_ ((Lisp_Object));
+static Lisp_Object select_window_1 P_ ((Lisp_Object, int));
+static int count_windows P_ ((struct window *));
+static int get_leaf_windows P_ ((struct window *, struct window **, int));
+static void window_scroll P_ ((Lisp_Object, int, int, int));
+static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int));
+static void window_scroll_line_based P_ ((Lisp_Object, int, int, int));
+static int window_min_size_1 P_ ((struct window *, int));
+static int window_min_size P_ ((struct window *, int, int, int *));
+static void size_window P_ ((Lisp_Object, int, int, int));
+static int freeze_window_start P_ ((struct window *, void *));
+static int window_fixed_size_p P_ ((struct window *, int, int));
+static void enlarge_window P_ ((Lisp_Object, int, int));
+static Lisp_Object window_list P_ ((void));
+static int add_window_to_list P_ ((struct window *, void *));
+static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object,
+ Lisp_Object));
+static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object,
+ Lisp_Object, int));
+static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *,
+ Lisp_Object *));
+static int foreach_window_1 P_ ((struct window *,
+ int (* fn) (struct window *, void *),
+ void *));
+static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object));
/* This is the window in which the terminal's cursor should
be left when nothing is being done with it. This must
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
+/* A list of all windows for use by next_window and Fwindow_list.
+ Functions creating or deleting windows should invalidate this cache
+ by setting it to nil. */
+
+Lisp_Object Vwindow_list;
+
+/* The mini-buffer window of the selected frame.
+ Note that you cannot test for mini-bufferness of an arbitrary window
+ by comparing against this; but you can test for mini-bufferness 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. */
+ when the mini-buffer 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;
+/* Nonzero means reuse existing frames for displaying buffers. */
+
+int display_buffer_reuse_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;
/* Hook to run when window config changes. */
+
Lisp_Object Qwindow_configuration_change_hook;
Lisp_Object Vwindow_configuration_change_hook;
/* Nonzero means scroll commands try to put point
at the same screen height as previously. */
-static int scroll_preserve_screen_position;
+Lisp_Object Vscroll_preserve_screen_position;
+
+#if 0 /* This isn't used anywhere. */
/* Nonzero means we can split a frame even if it is "unsplittable". */
static int inhibit_frame_unsplittable;
+#endif /* 0 */
#define min(a, b) ((a) < (b) ? (a) : (b))
for (i = 0; i < VECSIZE (struct window); i++)
vec->contents[i] = Qnil;
vec->size = VECSIZE (struct window);
- p = (struct window *)vec;
+ 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, 0);
- XSETFASTINT (p->last_point_x, 0);
- XSETFASTINT (p->last_point_y, 0);
+ p->orig_top = p->orig_height = Qnil;
p->start = Fmake_marker ();
p->pointm = Fmake_marker ();
XSETFASTINT (p->use_time, 0);
p->frame = Qnil;
p->display_table = Qnil;
p->dedicated = Qnil;
+ p->pseudo_window_p = 0;
+ bzero (&p->cursor, sizeof (p->cursor));
+ bzero (&p->last_cursor, sizeof (p->last_cursor));
+ bzero (&p->phys_cursor, sizeof (p->phys_cursor));
+ p->desired_matrix = p->current_matrix = 0;
+ p->phys_cursor_type = -1;
+ p->must_be_updated_p = 0;
+ XSETFASTINT (p->window_end_vpos, 0);
+ XSETFASTINT (p->window_end_pos, 0);
+ p->window_end_valid = Qnil;
+ p->vscroll = 0;
XSETWINDOW (val, p);
+ XSETFASTINT (p->last_point, 0);
+ p->frozen_window_start_p = 0;
+
+ Vwindow_list = Qnil;
return val;
}
Lisp_Object frame;
{
if (NILP (frame))
- XSETFRAME (frame, selected_frame);
- else
- CHECK_LIVE_FRAME (frame, 0);
-
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 0);
return FRAME_MINIBUF_WINDOW (XFRAME (frame));
}
Lisp_Object window;
{
struct window *w = decode_window (window);
- return (MINI_WINDOW_P (w) ? Qt : Qnil);
+ 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,
+ Spos_visible_in_window_p, 0, 3, 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;
+Return nil if that position is scrolled vertically out of view.\n\
+If FULLY is non-nil, then only return t when POS is completely visible.\n\
+POS defaults to point in WINDOW; WINDOW defaults to the selected window.")
+ (pos, window, fully)
+ Lisp_Object pos, window, fully;
{
register struct window *w;
- register int top;
- register int height;
register int posint;
register struct buffer *buf;
- struct position posval;
- int hscroll;
+ struct text_pos top;
+ Lisp_Object in_window;
+ int fully_p;
- if (NILP (pos))
- posint = PT;
- else
+ w = decode_window (window);
+ buf = XBUFFER (w->buffer);
+ SET_TEXT_POS_FROM_MARKER (top, w->start);
+
+ if (!NILP (pos))
{
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))
+ else if (w == XWINDOW (selected_window))
+ posint = PT;
+ else
+ posint = XMARKER (w->pointm)->charpos;
+
+ /* If position is above window start, it's not visible. */
+ if (posint < CHARPOS (top))
+ in_window = Qnil;
+ else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)
+ && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)
+ && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos))
{
- /* 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;
+ /* If frame is up-to-date, and POSINT is < window end pos, use
+ that info. This doesn't work for POSINT == end pos, because
+ the window end pos is actually the position _after_ the last
+ char in the window. */
+ if (!NILP (fully))
+ {
+ pos_visible_p (w, posint, &fully_p, !NILP (fully));
+ in_window = fully_p ? Qt : Qnil;
+ }
+ else
+ in_window = Qt;
}
+ else if (posint > BUF_ZV (buf))
+ in_window = Qnil;
+ else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf))
+ /* If window start is out of range, do something reasonable. */
+ in_window = 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 */
- /* BUG FIX for the 7th arg (TOHPOS).
-
- '0' is harmless, however, ' - (1 << (BITS_PER_SHORT - 1))' is
- more appropriate here. In case of HSCROLL > 0, this can avoid
- needless calculation done until (HPOS == 0).
-
- We want to determine if the position POSINT is in HEIGHT or
- not. We don't have to do calculation until (HPOS == 0). We
- can stop it when VPOS goes beyond HEIGHT. */
- posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0,
- posint, height, - (1 << (BITS_PER_SHORT - 1)),
- window_internal_width (w) - 1,
- hscroll, 0, w);
-
- return posval.vpos < height ? Qt : Qnil;
+ if (pos_visible_p (w, posint, &fully_p, !NILP (fully)))
+ in_window = NILP (fully) || fully_p ? Qt : Qnil;
+ else
+ in_window = Qnil;
}
+
+ return in_window;
}
+
\f
static struct window *
decode_window (window)
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 */
+ /* Prevent redisplay shortcuts */
+ XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1;
w->hscroll = ncol;
return ncol;
}
Qnil))));
}
-/* Test if the character at column *x, row *y is within window *w.
+/* 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
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. */
+ return 3.
+ if it is on the window's top line, return 4;
+ if it is in the bitmap area to the left/right of the window,
+ return 5 or 6, and convert *X and *Y to window-relative corrdinates.
+
+ X and Y are frame relative pixel coordinates. */
+
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;
+ struct frame *f = XFRAME (WINDOW_FRAME (w));
+ int left_x, right_x, top_y, bottom_y;
+ int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f);
+
+ /* Let's make this a global enum later, instead of using numbers
+ everywhere. */
+ enum {ON_NOTHING, ON_TEXT, ON_MODE_LINE, ON_VERTICAL_BORDER,
+ ON_HEADER_LINE, ON_LEFT_FRINGE, ON_RIGHT_FRINGE};
+
+ /* In what's below, we subtract 1 when computing right_x because we
+ want the rightmost pixel, which is given by left_pixel+width-1. */
+ if (w->pseudo_window_p)
+ {
+ left_x = 0;
+ right_x = XFASTINT (w->width) * CANON_Y_UNIT (f) - 1;
+ top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
+ bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w);
+ }
+ else
+ {
+ left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w)
+ - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f));
+ right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1;
+ top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w)
+ - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f));
+ bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w);
+ }
- if (left_margin != left && *x < left_margin && *x >= left)
- return 3;
+ /* Completely outside anything interesting? */
+ if (*y < top_y
+ || *y >= bottom_y
+ || *x < (left_x
+ - flags_area_width
+ - (FRAME_LEFT_SCROLL_BAR_WIDTH (f)
+ * CANON_X_UNIT (f)))
+ || *x > right_x + flags_area_width)
+ return ON_NOTHING;
- if (right_margin != right_edge && *x >= right_margin && *x < right_edge)
- return 3;
+ /* On the mode line or header line? If it's near the start of
+ the mode or header line of window that's has a horizontal
+ sibling, say it's on the vertical line. That's to be able
+ to resize windows horizontally in case we're using toolkit
+ scroll bars. */
- /* 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;
+ if (WINDOW_WANTS_MODELINE_P (w)
+ && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w))
+ {
+ if (XFASTINT (w->left) > 0
+ && (abs (*x - XFASTINT (w->left) * CANON_X_UNIT (f))
+ < CANON_X_UNIT (f) / 2))
+ return ON_VERTICAL_BORDER;
+ return ON_MODE_LINE;
+ }
+
+ if (WINDOW_WANTS_HEADER_LINE_P (w)
+ && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w))
+ {
+ if (XFASTINT (w->left) > 0
+ && (abs (*x - XFASTINT (w->left) * CANON_X_UNIT (f))
+ < CANON_X_UNIT (f) / 2))
+ return ON_VERTICAL_BORDER;
+ return ON_HEADER_LINE;
+ }
+
+ /* Need to say "*x > right_x" rather than >=, since on character
+ terminals, the vertical line's x coordinate is right_x. */
+ if (*x < left_x || *x > right_x)
+ {
+ /* Other lines than the mode line don't include flags areas and
+ scroll bars on the left. */
+
+ /* Convert X and Y to window-relative pixel coordinates. */
+ *x -= left_x;
+ *y -= top_y;
+ return *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE;
+ }
+
+ /* Here, too, "*x > right_x" is because of character terminals. */
+ if (!w->pseudo_window_p
+ && !WINDOW_RIGHTMOST_P (w)
+ && *x > right_x - CANON_X_UNIT (f))
+ /* On the border on the right side of the window? Assume that
+ this area begins at RIGHT_X minus a canonical char width. */
+ return ON_VERTICAL_BORDER;
+
+ /* Convert X and Y to window-relative pixel coordinates. */
+ *x -= left_x;
+ *y -= top_y;
+ return ON_TEXT;
}
DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p,
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 in the top mode line of WINDOW, `header-line' is returned.\n\
+If they are in the bitmap-area to the left of the window,\n\
+ `left-bitmap-area' is returned, if they are in the area on the right of\n\
+ the window, `right-bitmap-area' 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;
{
+ struct window *w;
+ struct frame *f;
int x, y;
+ Lisp_Object lx, ly;
CHECK_LIVE_WINDOW (window, 0);
+ w = XWINDOW (window);
+ f = XFRAME (w->frame);
CHECK_CONS (coordinates, 1);
- x = XINT (Fcar (coordinates));
- y = XINT (Fcdr (coordinates));
-
- switch (coordinates_in_window (XWINDOW (window), &x, &y))
+ lx = Fcar (coordinates);
+ ly = Fcdr (coordinates);
+ CHECK_NUMBER_OR_FLOAT (lx, 1);
+ CHECK_NUMBER_OR_FLOAT (ly, 1);
+ x = PIXEL_X_FROM_CANON_X (f, lx);
+ y = PIXEL_Y_FROM_CANON_Y (f, ly);
+
+ switch (coordinates_in_window (w, &x, &y))
{
case 0: /* NOT in window at all. */
return Qnil;
case 1: /* In text part of window. */
- return Fcons (make_number (x), make_number (y));
+ /* X and Y are now window relative pixel coordinates.
+ Convert them to canonical char units before returning
+ them. */
+ return Fcons (CANON_X_FROM_PIXEL_X (f, x),
+ CANON_Y_FROM_PIXEL_Y (f, y));
case 2: /* In mode line of window. */
return Qmode_line;
case 3: /* On right border of window. */
return Qvertical_line;
+ case 4:
+ return Qheader_line;
+
+ case 5:
+ return Qleft_bitmap_area;
+
+ case 6:
+ return Qright_bitmap_area;
+
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;
+
+/* Callback for foreach_window, used in window_from_coordinates.
+ Check if window W contains coordinates specified by USER_DATA which
+ is actually a pointer to a struct check_window_data CW.
+
+ Check if window W contains coordinates *CW->x and *CW->y. If it
+ does, return W in *CW->window, as Lisp_Object, and return in
+ *CW->part the part of the window under coordinates *X,*Y. Return
+ zero from this function to stop iterating over windows. */
+
+struct check_window_data
{
- register Lisp_Object tem, first;
+ Lisp_Object *window;
+ int *x, *y, *part;
+};
- tem = first = FRAME_SELECTED_WINDOW (frame);
+static int
+check_window_containing (w, user_data)
+ struct window *w;
+ void *user_data;
+{
+ struct check_window_data *cw = (struct check_window_data *) user_data;
+ int found;
- do
+ found = coordinates_in_window (w, cw->x, cw->y);
+ if (found)
{
- int found = coordinates_in_window (XWINDOW (tem), &x, &y);
+ *cw->part = found - 1;
+ XSETWINDOW (*cw->window, w);
+ }
+
+ return !found;
+}
- if (found)
- {
- *part = found - 1;
- return tem;
- }
- tem = Fnext_window (tem, Qt, Qlambda);
+/* Find the window containing frame-relative pixel position X/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. TOOL_BAR_P non-zero means detect tool-bar windows.
+
+ This function was previously implemented with a loop cycling over
+ windows with Fnext_window, and starting with the frame's selected
+ window. It turned out that this doesn't work with an
+ implementation of next_window using Vwindow_list, because
+ FRAME_SELECTED_WINDOW (F) is not always contained in the window
+ tree of F when this function is called asynchronously from
+ note_mouse_highlight. The original loop didn't terminate in this
+ case. */
+
+Lisp_Object
+window_from_coordinates (f, x, y, part, tool_bar_p)
+ struct frame *f;
+ int x, y;
+ int *part;
+ int tool_bar_p;
+{
+ Lisp_Object window;
+ struct check_window_data cw;
+
+ window = Qnil;
+ cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part;
+ foreach_window (f, check_window_containing, &cw);
+
+ /* If not found above, see if it's in the tool bar window, if a tool
+ bar exists. */
+ if (NILP (window)
+ && tool_bar_p
+ && WINDOWP (f->tool_bar_window)
+ && XINT (XWINDOW (f->tool_bar_window)->height) > 0
+ && coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y))
+ {
+ *part = 0;
+ window = f->tool_bar_window;
}
- while (! EQ (tem, first));
- return Qnil;
+ return window;
}
DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0,
Lisp_Object x, y, frame;
{
int part;
+ struct frame *f;
if (NILP (frame))
- XSETFRAME (frame, selected_frame);
- else
- CHECK_LIVE_FRAME (frame, 2);
- CHECK_NUMBER (x, 0);
- CHECK_NUMBER (y, 1);
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 2);
+ f = XFRAME (frame);
+
+ /* Check that arguments are integers or floats. */
+ CHECK_NUMBER_OR_FLOAT (x, 0);
+ CHECK_NUMBER_OR_FLOAT (y, 1);
- return window_from_coordinates (XFRAME (frame),
- XINT (x), XINT (y),
- &part);
+ return window_from_coordinates (f,
+ PIXEL_X_FROM_CANON_X (f, x),
+ PIXEL_Y_FROM_CANON_Y (f, y),
+ &part, 0);
}
DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0,
&& ! (! NILP (w->window_end_valid)
&& XFASTINT (w->last_modified) >= MODIFF))
{
- int opoint = PT, opoint_byte = PT_BYTE;
- TEMP_SET_PT_BOTH (XMARKER (w->start)->charpos,
- XMARKER (w->start)->bytepos);
- Fvertical_motion (make_number (window_internal_height (w)), Qnil);
- XSETINT (value, PT);
- TEMP_SET_PT_BOTH (opoint, opoint_byte);
+ struct text_pos startp;
+ struct it it;
+
+ /* In case W->start is out of the range, use something
+ reasonable. This situation occured when loading a file with
+ `-l' containing a call to `rmail' with subsequent other
+ commands. At the end, W->start happened to be BEG, while
+ rmail had already narrowed the buffer. */
+ if (XMARKER (w->start)->charpos < BEGV)
+ SET_TEXT_POS (startp, BEGV, BEGV_BYTE);
+ else if (XMARKER (w->start)->charpos > ZV)
+ SET_TEXT_POS (startp, ZV, ZV_BYTE);
+ else
+ SET_TEXT_POS_FROM_MARKER (startp, w->start);
+
+ /* Cannot use Fvertical_motion because that function doesn't
+ cope with variable-height lines. */
+ start_display (&it, w, startp);
+ move_it_vertically (&it, window_box_height (w));
+ value = make_number (IT_CHARPOS (it));
}
else
- XSETINT (value,
- BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos));
+ XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos));
return value;
}
register struct window *w = decode_window (window);
CHECK_NUMBER_COERCE_MARKER (pos, 1);
- if (w == XWINDOW (selected_window))
+ if (w == XWINDOW (selected_window)
+ && XBUFFER (w->buffer) == current_buffer)
Fgoto_char (pos);
else
set_marker_restricted (w->pointm, pos, w->buffer);
-
+
return pos;
}
XSETFASTINT (w->last_overlay_modified, 0);
if (!EQ (window, selected_window))
windows_or_buffers_changed++;
+
return pos;
}
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. */
+/* Get the display table for use 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);
- if (NILP (w->buffer))
- return 0;
+ struct Lisp_Char_Table *dp = NULL;
+
+ if (DISP_TABLE_P (w->display_table))
+ dp = XCHAR_TABLE (w->display_table);
+ else if (BUFFERP (w->buffer))
+ {
+ struct buffer *b = XBUFFER (w->buffer);
+
+ if (DISP_TABLE_P (b->display_table))
+ dp = XCHAR_TABLE (b->display_table);
+ else if (DISP_TABLE_P (Vstandard_display_table))
+ dp = XCHAR_TABLE (Vstandard_display_table);
+ }
- 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;
+ return dp;
}
DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0,
register Lisp_Object window, table;
{
register struct window *w;
- register Lisp_Object z; /* Return value. */
w = decode_window (window);
w->display_table = table;
if (b != XMARKER (w->pointm)->buffer)
abort ();
- if (w == XWINDOW (b->last_selected_window))
- b->last_selected_window = Qnil;
-
#if 0
if (w == XWINDOW (selected_window)
|| ! EQ (buf, XWINDOW (selected_window)->buffer))
/* 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))
+ if (! EQ (buf, XWINDOW (selected_window)->buffer)
+ /* This line helps to fix Horsley's testbug.el bug. */
+ && !(WINDOWP (b->last_selected_window)
+ && w != XWINDOW (b->last_selected_window)
+ && EQ (buf, XWINDOW (b->last_selected_window)->buffer)))
temp_set_point_both (b,
clip_to_bounds (BUF_BEGV (b),
XMARKER (w->pointm)->charpos,
clip_to_bounds (BUF_BEGV_BYTE (b),
marker_byte_position (w->pointm),
BUF_ZV_BYTE (b)));
+
+ if (WINDOWP (b->last_selected_window)
+ && w == XWINDOW (b->last_selected_window))
+ b->last_selected_window = Qnil;
}
/* Put replacement into the window structure in place of old. */
p->top = o->top;
p->width = o->width;
p->height = o->height;
+ p->desired_matrix = p->current_matrix = 0;
+ p->vscroll = 0;
+ bzero (&p->cursor, sizeof (p->cursor));
+ bzero (&p->last_cursor, sizeof (p->last_cursor));
+ bzero (&p->phys_cursor, sizeof (p->phys_cursor));
+ p->phys_cursor_type = -1;
+ p->must_be_updated_p = 0;
+ p->pseudo_window_p = 0;
+ XSETFASTINT (p->window_end_vpos, 0);
+ XSETFASTINT (p->window_end_pos, 0);
+ p->window_end_valid = Qnil;
+ p->frozen_window_start_p = 0;
+ p->orig_top = p->orig_height = Qnil;
p->next = tem = o->next;
if (!NILP (tem))
register Lisp_Object tem, parent, sib;
register struct window *p;
register struct window *par;
+ FRAME_PTR frame;
/* Because this function is called by other C code on non-leaf
windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
par = XWINDOW (parent);
windows_or_buffers_changed++;
- FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1;
+ Vwindow_list = Qnil;
+ frame = XFRAME (WINDOW_FRAME (p));
+ FRAME_WINDOW_SIZES_CHANGED (frame) = 1;
/* Are we trying to delete any frame's selected window? */
{
unchain_marker (p->start);
}
+ /* Free window glyph matrices. It is sure that they are allocated
+ again when ADJUST_GLYPHS is called. Block input so that expose
+ events and other events that access glyph matrices are not
+ processed while we are changing them. */
+ BLOCK_INPUT;
+ free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (frame)));
+
tem = p->next;
if (!NILP (tem))
XWINDOW (tem)->prev = p->prev;
/* Mark this window as deleted. */
p->buffer = p->hchild = p->vchild = Qnil;
+
+ /* Adjust glyph matrices. */
+ adjust_glyphs (frame);
+ UNBLOCK_INPUT;
}
+
+
\f
+/***********************************************************************
+ Window List
+ ***********************************************************************/
+
+/* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
+ pointer. This is a callback function for foreach_window, used in
+ function window_list. */
+
+static int
+add_window_to_list (w, user_data)
+ struct window *w;
+ void *user_data;
+{
+ Lisp_Object *list = (Lisp_Object *) user_data;
+ Lisp_Object window;
+ XSETWINDOW (window, w);
+ *list = Fcons (window, *list);
+ return 1;
+}
+
+
+/* Return a list of all windows, for use by next_window. If
+ Vwindow_list is a list, return that list. Otherwise, build a new
+ list, cache it in Vwindow_list, and return that. */
+
+static Lisp_Object
+window_list ()
+{
+ if (!CONSP (Vwindow_list))
+ {
+ Lisp_Object tail;
+
+ Vwindow_list = Qnil;
+ for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail))
+ {
+ Lisp_Object args[2];
+
+ /* We are visiting windows in canonical order, and add
+ new windows at the front of args[1], which means we
+ have to reverse this list at the end. */
+ args[1] = Qnil;
+ foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]);
+ args[0] = Vwindow_list;
+ args[1] = Fnreverse (args[1]);
+ Vwindow_list = Fnconc (2, args);
+ }
+ }
+
+ return Vwindow_list;
+}
+
+
+/* Value is non-zero if WINDOW satisfies the constraints given by
+ OWINDOW, MINIBUF and ALL_FRAMES.
+
+ MINIBUF t means WINDOW may be minibuffer windows.
+ `lambda' means WINDOW may not be a minibuffer window.
+ a window means a specific minibuffer window
+
+ ALL_FRAMES t means search all frames,
+ nil means search just current frame,
+ `visible' means search just visible frames,
+ 0 means search visible and iconified frames,
+ a window means search the frame that window belongs to,
+ a frame means consider windows on that frame, only. */
+
+static int
+candidate_window_p (window, owindow, minibuf, all_frames)
+ Lisp_Object window, owindow, minibuf, all_frames;
+{
+ struct window *w = XWINDOW (window);
+ struct frame *f = XFRAME (w->frame);
+ int candidate_p = 1;
+
+ if (!BUFFERP (w->buffer))
+ candidate_p = 0;
+ else if (MINI_WINDOW_P (w)
+ && (EQ (minibuf, Qlambda)
+ || (WINDOWP (minibuf) && !EQ (minibuf, window))))
+ {
+ /* If MINIBUF is `lambda' don't consider any mini-windows.
+ If it is a window, consider only that one. */
+ candidate_p = 0;
+ }
+ else if (EQ (all_frames, Qt))
+ candidate_p = 1;
+ else if (NILP (all_frames))
+ {
+ xassert (WINDOWP (owindow));
+ candidate_p = EQ (w->frame, XWINDOW (owindow)->frame);
+ }
+ else if (EQ (all_frames, Qvisible))
+ {
+ FRAME_SAMPLE_VISIBILITY (f);
+ candidate_p = FRAME_VISIBLE_P (f);
+ }
+ else if (INTEGERP (all_frames) && XINT (all_frames) == 0)
+ {
+ FRAME_SAMPLE_VISIBILITY (f);
+ candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f);
+ }
+ else if (WINDOWP (all_frames))
+ candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames)
+ || EQ (XWINDOW (all_frames)->frame, w->frame)
+ || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f)));
+ else if (FRAMEP (all_frames))
+ candidate_p = EQ (all_frames, w->frame);
+
+ return candidate_p;
+}
+
+
+/* Decode arguments as allowed by Fnext_window, Fprevious_window, and
+ Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
+ ALL_FRAMES. */
+
+static void
+decode_next_window_args (window, minibuf, all_frames)
+ Lisp_Object *window, *minibuf, *all_frames;
+{
+ if (NILP (*window))
+ *window = selected_window;
+ else
+ CHECK_LIVE_WINDOW (*window, 0);
+
+ /* 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 (XWINDOW (*window)->frame))
+ : Qnil);
+ else if (EQ (*all_frames, Qvisible))
+ ;
+ else if (XFASTINT (*all_frames) == 0)
+ ;
+ else if (FRAMEP (*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, or a
+ frame, meaning consider windows on that frame, only. */
+}
+
+
+/* Return the next or previous window of WINDOW in canonical ordering
+ of windows. NEXT_P non-zero means return the next window. See the
+ documentation string of next-window for the meaning of MINIBUF and
+ ALL_FRAMES. */
+
+static Lisp_Object
+next_window (window, minibuf, all_frames, next_p)
+ Lisp_Object window, minibuf, all_frames;
+ int next_p;
+{
+ decode_next_window_args (&window, &minibuf, &all_frames);
+
+ /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
+ return the first window on the frame. */
+ if (FRAMEP (all_frames)
+ && !EQ (all_frames, XWINDOW (window)->frame))
+ return Fframe_first_window (all_frames);
+
+ if (next_p)
+ {
+ Lisp_Object list;
+
+ /* Find WINDOW in the list of all windows. */
+ list = Fmemq (window, window_list ());
+
+ /* Scan forward from WINDOW to the end of the window list. */
+ if (CONSP (list))
+ for (list = XCDR (list); CONSP (list); list = XCDR (list))
+ if (candidate_window_p (XCAR (list), window, minibuf, all_frames))
+ break;
+
+ /* Scan from the start of the window list up to WINDOW. */
+ if (!CONSP (list))
+ for (list = Vwindow_list;
+ CONSP (list) && !EQ (XCAR (list), window);
+ list = XCDR (list))
+ if (candidate_window_p (XCAR (list), window, minibuf, all_frames))
+ break;
+
+ if (CONSP (list))
+ window = XCAR (list);
+ }
+ else
+ {
+ Lisp_Object candidate, list;
+
+ /* Scan through the list of windows for candidates. If there are
+ candidate windows in front of WINDOW, the last one of these
+ is the one we want. If there are candidates following WINDOW
+ in the list, again the last one of these is the one we want. */
+ candidate = Qnil;
+ for (list = window_list (); CONSP (list); list = XCDR (list))
+ {
+ if (EQ (XCAR (list), window))
+ {
+ if (WINDOWP (candidate))
+ break;
+ }
+ else if (candidate_window_p (XCAR (list), window, minibuf,
+ all_frames))
+ candidate = XCAR (list);
+ }
+
+ if (WINDOWP (candidate))
+ window = candidate;
+ }
+
+ return window;
+}
-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
DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0,
0)
(window, minibuf, all_frames)
- register Lisp_Object window, minibuf, all_frames;
+ 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;
+ return next_window (window, minibuf, all_frames, 1);
}
+
/* 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", Fprevious_window, Sprevious_window, 0, 3, 0,
0)
(window, minibuf, all_frames)
- register Lisp_Object window, minibuf, all_frames;
+ Lisp_Object window, minibuf, all_frames;
{
- register Lisp_Object tem;
- Lisp_Object start_window;
+ return next_window (window, minibuf, all_frames, 0);
+}
- 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\
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;
+ Lisp_Object arg, all_frames;
{
- register int i;
- register Lisp_Object w;
+ Lisp_Object window;
+ int i;
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);
+ window = selected_window;
+
+ for (i = XINT (arg); i > 0; --i)
+ window = Fnext_window (window, Qnil, all_frames);
+ for (; i < 0; ++i)
+ window = Fprevious_window (window, Qnil, all_frames);
+
+ Fselect_window (window);
return Qnil;
}
+
+
+DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0,
+ "Return a list of windows on FRAME, starting with WINDOW.\n\
+FRAME nil or omitted means use the selected frame.\n\
+WINDOW nil or omitted means use the selected window.\n\
+MINIBUF t means include the minibuffer window, even if it isn't active.\n\
+MINIBUF nil or omitted means include the minibuffer window only\n\
+if it's active.\n\
+MINIBUF neither nil nor t means never include the minibuffer window.")
+ (frame, minibuf, window)
+ Lisp_Object frame, minibuf, window;
+{
+ Lisp_Object list;
+
+ if (NILP (window))
+ window = selected_window;
+ if (NILP (frame))
+ frame = selected_frame;
+
+ if (!EQ (frame, XWINDOW (window)->frame))
+ error ("Window is on a different frame");
+
+ return window_list_1 (window, minibuf, frame);
+}
+
+
+/* Return a list of windows in canonical ordering. Arguments are like
+ for `next-window'. */
+
+static Lisp_Object
+window_list_1 (window, minibuf, all_frames)
+ Lisp_Object window, minibuf, all_frames;
+{
+ Lisp_Object tail, list;
+
+ decode_next_window_args (&window, &minibuf, &all_frames);
+ list = Qnil;
+
+ for (tail = window_list (); CONSP (tail); tail = XCDR (tail))
+ if (candidate_window_p (XCAR (tail), window, minibuf, all_frames))
+ list = Fcons (XCAR (tail), list);
+
+ return Fnreverse (list);
+}
+
+
\f
/* Look at all windows, performing an operation specified by TYPE
with argument OBJ.
DELETE_OTHER_WINDOWS, /* Arg is window not to delete */
DELETE_BUFFER_WINDOWS, /* Arg is buffer */
GET_LARGEST_WINDOW,
- UNSHOW_BUFFER /* Arg is buffer */
+ UNSHOW_BUFFER, /* Arg is buffer */
+ CHECK_ALL_WINDOWS
};
static Lisp_Object
window_loop (type, obj, mini, frames)
enum window_loop type;
- register Lisp_Object obj, frames;
+ 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;
-
+ Lisp_Object window, windows, best_window, frame_arg;
+ struct frame *f;
+ struct gcpro gcpro1;
+
/* 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);
+ f = XFRAME (frames);
else if (NILP (frames))
- frame = selected_frame;
+ f = SELECTED_FRAME ();
else
- frame = 0;
- if (frame)
+ f = NULL;
+
+ if (f)
frame_arg = Qlambda;
else if (XFASTINT (frames) == 0)
frame_arg = frames;
else if (EQ (frames, Qvisible))
frame_arg = frames;
+ else
+ frame_arg = Qt;
/* frame_arg is Qlambda to stick to one frame,
Qvisible to consider all visible frames,
/* Pick a window to start with. */
if (WINDOWP (obj))
- w = obj;
- else if (frame)
- w = FRAME_SELECTED_WINDOW (frame);
+ window = obj;
+ else if (f)
+ window = FRAME_SELECTED_WINDOW (f);
else
- w = FRAME_SELECTED_WINDOW (selected_frame);
+ window = 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
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);
-
+ windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg);
+ GCPRO1 (windows);
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))
+ for (; CONSP (windows); windows = CDR (windows))
+ {
+ struct window *w;
+
+ window = XCAR (windows);
+ w = XWINDOW (window);
+
+ /* Note that we do not pay attention here to whether the frame
+ is visible, since Fwindow_list skips non-visible frames if
+ that is desired, under the control of frame_arg. */
+ if (!MINI_WINDOW_P (w)
+ /* For UNSHOW_BUFFER, we must always consider all windows. */
+ || type == UNSHOW_BUFFER
|| (mini && minibuf_level > 0))
switch (type)
{
case GET_BUFFER_WINDOW:
- if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)
+ if (EQ (w->buffer, 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;
+ && (MINI_WINDOW_P (w)
+ ? EQ (window, minibuf_window)
+ : 1))
+ {
+ UNGCPRO;
+ return window;
+ }
break;
case GET_LRU_WINDOW:
/* t as arg means consider only full-width windows */
- if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w)))
+ if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w))
break;
/* Ignore dedicated windows and minibuffers. */
- if (MINI_WINDOW_P (XWINDOW (w))
- || !NILP (XWINDOW (w)->dedicated))
+ if (MINI_WINDOW_P (w) || !NILP (w->dedicated))
break;
if (NILP (best_window)
|| (XFASTINT (XWINDOW (best_window)->use_time)
- > XFASTINT (XWINDOW (w)->use_time)))
- best_window = w;
+ > XFASTINT (w->use_time)))
+ best_window = window;
break;
case DELETE_OTHER_WINDOWS:
- if (XWINDOW (w) != XWINDOW (obj))
- Fdelete_window (w);
+ if (!EQ (window, obj))
+ Fdelete_window (window);
break;
case DELETE_BUFFER_WINDOWS:
- if (EQ (XWINDOW (w)->buffer, obj))
+ if (EQ (w->buffer, obj))
{
- FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w)));
+ struct frame *f = XFRAME (WINDOW_FRAME (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)
+ if (EQ (window, FRAME_ROOT_WINDOW (f))
+ && !NILP (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);
- }
+ while (CONSP (XCDR (windows))
+ && EQ (XWINDOW (XCAR (windows))->frame,
+ XWINDOW (XCAR (XCDR (windows)))->frame))
+ windows = XCDR (windows);
+
/* Now we can safely delete the frame. */
- Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil);
+ Fdelete_frame (w->frame, Qnil);
+ }
+ else if (NILP (w->parent))
+ {
+ /* If we're deleting the buffer displayed in the
+ only window on the frame, find a new buffer to
+ display there. */
+ Lisp_Object buffer;
+ buffer = Fother_buffer (obj, Qnil, w->frame);
+ if (NILP (buffer))
+ buffer = Fget_buffer_create (build_string ("*scratch*"));
+ Fset_window_buffer (window, buffer);
+ if (EQ (window, selected_window))
+ Fset_buffer (w->buffer);
}
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);
+ Fdelete_window (window);
}
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;
+ /* Ignore dedicated windows and minibuffers. */
+ if (MINI_WINDOW_P (w) || !NILP (w->dedicated))
+ break;
+
+ if (NILP (best_window))
+ best_window = window;
+ else
+ {
+ struct window *b = XWINDOW (best_window);
+ if (XFASTINT (w->height) * XFASTINT (w->width)
+ > XFASTINT (b->height) * XFASTINT (b->width))
+ best_window = window;
+ }
}
break;
case UNSHOW_BUFFER:
- if (EQ (XWINDOW (w)->buffer, obj))
+ if (EQ (w->buffer, obj))
{
+ Lisp_Object buffer;
+ struct frame *f = XFRAME (w->frame);
+
/* 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*"));
+ buffer = Fother_buffer (obj, Qnil, w->frame);
+ if (NILP (buffer))
+ 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)
+ if (EQ (window, FRAME_ROOT_WINDOW (f))
+ && !NILP (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);
- }
+ while (CONSP (XCDR (windows))
+ && EQ (XWINDOW (XCAR (windows))->frame,
+ XWINDOW (XCAR (XCDR (windows)))->frame))
+ windows = XCDR (windows);
+
/* Now we can safely delete the frame. */
- Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil);
+ Fdelete_frame (w->frame, 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);
+ w->dedicated = Qnil;
+ Fset_window_buffer (window, buffer);
+ if (EQ (window, selected_window))
+ Fset_buffer (w->buffer);
}
}
break;
- }
- if (EQ (w, last_window))
- break;
+ /* Check for a window that has a killed buffer. */
+ case CHECK_ALL_WINDOWS:
+ if (! NILP (w->buffer)
+ && NILP (XBUFFER (w->buffer)->name))
+ abort ();
+ break;
- w = next_window;
+ case WINDOW_LOOP_UNUSED:
+ break;
+ }
}
+ UNGCPRO;
return best_window;
}
+/* Used for debugging. Abort if any window has a dead buffer. */
+
+void
+check_all_windows ()
+{
+ window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt);
+}
+
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\
w = XWINDOW (window);
startpos = marker_position (w->start);
- top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w)));
+ top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w)));
if (MINI_WINDOW_P (w) && top > 0)
error ("Can't expand minibuffer to full frame");
set_buffer_internal (obuf);
}
+
return Qnil;
}
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.")
+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 nil, search all frames.\n\
+If FRAME is t, search only the selected frame.\n\
+If FRAME is a frame, search only 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 (frame))
+ frame = Qt;
+ else if (EQ (frame, Qt))
+ frame = Qnil;
if (!NILP (buffer))
{
CHECK_BUFFER (buffer, 0);
window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame);
}
+
return Qnil;
}
/* The smallest acceptable dimensions for a window. Anything smaller
might crash Emacs. */
+
#define MIN_SAFE_WINDOW_WIDTH (2)
#define MIN_SAFE_WINDOW_HEIGHT (2)
/* 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;
(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 (FRAME_TOP_MARGIN (frame) > 0)
+ min_height += FRAME_TOP_MARGIN (frame);
if (*rows < min_height)
*rows = min_height;
*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) */
-void
-set_window_height (window, height, nodelete)
- Lisp_Object window;
- int height;
- int nodelete;
+/* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
+ check if W's width can be changed, otherwise check W's height.
+ CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
+ siblings, too. If none of the siblings is resizable, WINDOW isn't
+ either. */
+
+static int
+window_fixed_size_p (w, width_p, check_siblings_p)
+ struct window *w;
+ int width_p, check_siblings_p;
{
- register struct window *w = XWINDOW (window);
- register struct window *c;
- int oheight = XFASTINT (w->height);
- int top, pos, lastbot, opos, lastobot;
- Lisp_Object child;
+ int fixed_p;
+ struct window *c;
+
+ if (!NILP (w->hchild))
+ {
+ c = XWINDOW (w->hchild);
+
+ if (width_p)
+ {
+ /* A horiz. combination is fixed-width if all of if its
+ children are. */
+ while (c && window_fixed_size_p (c, width_p, 0))
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ fixed_p = c == NULL;
+ }
+ else
+ {
+ /* A horiz. combination is fixed-height if one of if its
+ children is. */
+ while (c && !window_fixed_size_p (c, width_p, 0))
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ fixed_p = c != NULL;
+ }
+ }
+ else if (!NILP (w->vchild))
+ {
+ c = XWINDOW (w->vchild);
+
+ if (width_p)
+ {
+ /* A vert. combination is fixed-width if one of if its
+ children is. */
+ while (c && !window_fixed_size_p (c, width_p, 0))
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ fixed_p = c != NULL;
+ }
+ else
+ {
+ /* A vert. combination is fixed-height if all of if its
+ children are. */
+ while (c && window_fixed_size_p (c, width_p, 0))
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ fixed_p = c == NULL;
+ }
+ }
+ else if (BUFFERP (w->buffer))
+ {
+ if (w->height_fixed_p && !width_p)
+ fixed_p = 1;
+ else
+ {
+ struct buffer *old = current_buffer;
+ Lisp_Object val;
+
+ current_buffer = XBUFFER (w->buffer);
+ val = find_symbol_value (Qwindow_size_fixed);
+ current_buffer = old;
+
+ fixed_p = 0;
+ if (!EQ (val, Qunbound))
+ {
+ fixed_p = !NILP (val);
+
+ if (fixed_p
+ && ((EQ (val, Qheight) && width_p)
+ || (EQ (val, Qwidth) && !width_p)))
+ fixed_p = 0;
+ }
+ }
- check_min_window_sizes ();
+ /* Can't tell if this one is resizable without looking at
+ siblings. If all siblings are fixed-size this one is too. */
+ if (!fixed_p && check_siblings_p && WINDOWP (w->parent))
+ {
+ Lisp_Object child;
+
+ for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev)
+ if (!window_fixed_size_p (XWINDOW (child), width_p, 0))
+ break;
- if (!nodelete
- && ! NILP (w->parent)
- && (MINI_WINDOW_P (w)
- ? height < 1
- : height < window_min_height))
- {
- delete_window (window);
- return;
+ if (NILP (child))
+ for (child = w->next; !NILP (child); child = XWINDOW (child)->next)
+ if (!window_fixed_size_p (XWINDOW (child), width_p, 0))
+ break;
+
+ if (NILP (child))
+ fixed_p = 1;
+ }
}
+ else
+ fixed_p = 1;
- XSETFASTINT (w->last_modified, 0);
- XSETFASTINT (w->last_overlay_modified, 0);
- windows_or_buffers_changed++;
- FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1;
+ return fixed_p;
+}
+
- XSETFASTINT (w->height, height);
+/* Return the minimum size of window W, not taking fixed-width windows
+ into account. WIDTH_P non-zero means return the minimum width,
+ otherwise return the minimum height. If W is a combination window,
+ compute the minimum size from the minimum sizes of W's children. */
+
+static int
+window_min_size_1 (w, width_p)
+ struct window *w;
+ int width_p;
+{
+ struct window *c;
+ int size;
+
if (!NILP (w->hchild))
{
- for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next)
+ c = XWINDOW (w->hchild);
+ size = 0;
+
+ if (width_p)
+ {
+ /* The min width of a horizontal combination is
+ the sum of the min widths of its children. */
+ while (c)
+ {
+ size += window_min_size_1 (c, width_p);
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ }
+ }
+ else
{
- XWINDOW (child)->top = w->top;
- set_window_height (child, height, nodelete);
+ /* The min height a horizontal combination equals
+ the maximum of all min height of its children. */
+ while (c)
+ {
+ int min_size = window_min_size_1 (c, width_p);
+ size = max (min_size, size);
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ }
}
}
else if (!NILP (w->vchild))
{
- lastbot = top = XFASTINT (w->top);
- lastobot = 0;
- for (child = w->vchild; !NILP (child); child = c->next)
+ c = XWINDOW (w->vchild);
+ size = 0;
+
+ if (width_p)
{
- c = XWINDOW (child);
+ /* The min width of a vertical combination is
+ the maximum of the min widths of its children. */
+ while (c)
+ {
+ int min_size = window_min_size_1 (c, width_p);
+ size = max (min_size, size);
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ }
+ }
+ else
+ {
+ /* The min height of a vertical combination equals
+ the sum of the min height of its children. */
+ while (c)
+ {
+ size += window_min_size_1 (c, width_p);
+ c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL;
+ }
+ }
+ }
+ else
+ {
+ if (width_p)
+ size = window_min_width;
+ else
+ {
+ if (MINI_WINDOW_P (w)
+ || (!WINDOW_WANTS_MODELINE_P (w)
+ && !WINDOW_WANTS_HEADER_LINE_P (w)))
+ size = 1;
+ else
+ size = window_min_height;
+ }
+ }
- opos = lastobot + XFASTINT (c->height);
+ return size;
+}
- XSETFASTINT (c->top, lastbot);
- pos = (((opos * height) << 1) + oheight) / (oheight << 1);
+/* Return the minimum size of window W, taking fixed-size windows into
+ account. WIDTH_P non-zero means return the minimum width,
+ otherwise return the minimum height. IGNORE_FIXED_P non-zero means
+ ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size
+ unless FIXED is null. */
- /* Avoid confusion: inhibit deletion of child if becomes too small */
- set_window_height (child, pos + top - lastbot, 1);
+static int
+window_min_size (w, width_p, ignore_fixed_p, fixed)
+ struct window *w;
+ int width_p, ignore_fixed_p, *fixed;
+{
+ int size, fixed_p;
- /* 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);
- }
- }
+ if (ignore_fixed_p)
+ fixed_p = 0;
+ else
+ fixed_p = window_fixed_size_p (w, width_p, 1);
+
+ if (fixed)
+ *fixed = fixed_p;
+
+ if (fixed_p)
+ size = width_p ? XFASTINT (w->width) : XFASTINT (w->height);
+ else
+ size = window_min_size_1 (w, width_p);
+
+ return size;
}
-/* Recursively set width of WINDOW and its inferiors. */
-void
-set_window_width (window, width, nodelete)
+/* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
+ WINDOW's width. Resize WINDOW's children, if any, so that they
+ keep their proportionate size relative to WINDOW. Propagate
+ WINDOW's top or left edge position to children. Delete windows
+ that become too small unless NODELETE_P is non-zero. */
+
+static void
+size_window (window, size, width_p, nodelete_p)
Lisp_Object window;
- int width;
- int nodelete;
+ int size, width_p, nodelete_p;
{
- register struct window *w = XWINDOW (window);
- register struct window *c;
- int owidth = XFASTINT (w->width);
- int left, pos, lastright, opos, lastoright;
- Lisp_Object child;
+ struct window *w = XWINDOW (window);
+ struct window *c;
+ Lisp_Object child, *forward, *sideward;
+ int old_size, min_size;
- if (!nodelete && width < window_min_width && !NILP (w->parent))
+ check_min_window_sizes ();
+ size = max (0, size);
+
+ /* If the window has been "too small" at one point,
+ don't delete it for being "too small" in the future.
+ Preserve it as long as that is at all possible. */
+ if (width_p)
{
- delete_window (window);
- return;
+ old_size = XINT (w->width);
+ min_size = window_min_width;
}
+ else
+ {
+ old_size = XINT (w->height);
+ min_size = window_min_height;
+ }
+
+ if (old_size < window_min_width)
+ w->too_small_ok = Qt;
- XSETFASTINT (w->last_modified, 0);
- XSETFASTINT (w->last_overlay_modified, 0);
+ /* Maybe delete WINDOW if it's too small. */
+ if (!nodelete_p && !NILP (w->parent))
+ {
+ int min_size;
+
+ if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok))
+ min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT;
+ else
+ min_size = width_p ? window_min_width : window_min_height;
+
+ if (size < min_size)
+ {
+ delete_window (window);
+ return;
+ }
+ }
+
+ /* Set redisplay hints. */
+ w->last_modified = make_number (0);
+ w->last_overlay_modified = make_number (0);
windows_or_buffers_changed++;
- FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1;
+ FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1;
- XSETFASTINT (w->width, width);
- if (!NILP (w->vchild))
+ if (width_p)
{
- for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next)
+ sideward = &w->vchild;
+ forward = &w->hchild;
+ w->width = make_number (size);
+ }
+ else
+ {
+ sideward = &w->hchild;
+ forward = &w->vchild;
+ w->height = make_number (size);
+ }
+
+ if (!NILP (*sideward))
+ {
+ for (child = *sideward; !NILP (child); child = c->next)
{
- XWINDOW (child)->left = w->left;
- set_window_width (child, width, nodelete);
+ c = XWINDOW (child);
+ if (width_p)
+ c->left = w->left;
+ else
+ c->top = w->top;
+ size_window (child, size, width_p, nodelete_p);
}
}
- else if (!NILP (w->hchild))
+ else if (!NILP (*forward))
{
- lastright = left = XFASTINT (w->left);
- lastoright = 0;
- for (child = w->hchild; !NILP (child); child = c->next)
+ int fixed_size, each, extra, n;
+ int resize_fixed_p, nfixed;
+ int last_pos, first_pos, nchildren, total;
+
+ /* Determine the fixed-size portion of the this window, and the
+ number of child windows. */
+ fixed_size = nchildren = nfixed = total = 0;
+ for (child = *forward; !NILP (child); child = c->next, ++nchildren)
{
+ int child_size;
+
c = XWINDOW (child);
+ child_size = width_p ? XINT (c->width) : XINT (c->height);
+ total += child_size;
+
+ if (window_fixed_size_p (c, width_p, 0))
+ {
+ fixed_size += child_size;
+ ++nfixed;
+ }
+ }
- opos = lastoright + XFASTINT (c->width);
-
- XSETFASTINT (c->left, lastright);
-
- pos = (((opos * width) << 1) + owidth) / (owidth << 1);
+ /* If the new size is smaller than fixed_size, or if there
+ aren't any resizable windows, allow resizing fixed-size
+ windows. */
+ resize_fixed_p = nfixed == nchildren || size < fixed_size;
+
+ /* Compute how many lines/columns to add to each child. The
+ value of extra takes care of rounding errors. */
+ n = resize_fixed_p ? nchildren : nchildren - nfixed;
+ each = (size - total) / n;
+ extra = (size - total) - n * each;
+
+ /* Compute new children heights and edge positions. */
+ first_pos = width_p ? XINT (w->left) : XINT (w->top);
+ last_pos = first_pos;
+ for (child = *forward; !NILP (child); child = c->next)
+ {
+ int new_size, old_size;
+
+ c = XWINDOW (child);
+ old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height);
+ new_size = old_size;
- /* Inhibit deletion for becoming too small */
- set_window_width (child, pos + left - lastright, 1);
+ /* The top or left edge position of this child equals the
+ bottom or right edge of its predecessor. */
+ if (width_p)
+ c->left = make_number (last_pos);
+ else
+ c->top = make_number (last_pos);
- /* Now advance child to next window,
- and set lastright if child was not just deleted. */
- lastright = pos + left, lastoright = opos;
+ /* If this child can be resized, do it. */
+ if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0))
+ {
+ new_size = old_size + each + extra;
+ extra = 0;
+ }
+
+ /* Set new height. Note that size_window also propagates
+ edge positions to children, so it's not a no-op if we
+ didn't change the child's size. */
+ size_window (child, new_size, width_p, 1);
+
+ /* Remember the bottom/right edge position of this child; it
+ will be used to set the top/left edge of the next child. */
+ last_pos += new_size;
}
- /* Delete children that became too small */
- if (!nodelete)
- for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next)
+
+ /* We should have covered the parent exactly with child windows. */
+ xassert (size == last_pos - first_pos);
+
+ /* Now delete any children that became too small. */
+ if (!nodelete_p)
+ for (child = *forward; !NILP (child); child = c->next)
{
- set_window_width (child, XINT (XWINDOW (child)->width), 0);
+ int child_size;
+ c = XWINDOW (child);
+ child_size = width_p ? XINT (c->width) : XINT (c->height);
+ size_window (child, child_size, width_p, 0);
}
}
}
-\f
-int window_select_count;
-Lisp_Object
-Fset_window_buffer_unwind (obuf)
- Lisp_Object obuf;
+/* Set WINDOW's height to HEIGHT, and recursively change the height of
+ WINDOW's children. NODELETE non-zero means don't delete windows
+ that become too small in the process. (The caller should check
+ later and do so if appropriate.) */
+
+void
+set_window_height (window, height, nodelete)
+ Lisp_Object window;
+ int height;
+ int nodelete;
{
- Fset_buffer (obuf);
- return Qnil;
+ size_window (window, height, 0, nodelete);
}
-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);
+/* Set WINDOW's width to WIDTH, and recursively change the width of
+ WINDOW's children. NODELETE non-zero means don't delete windows
+ that become too small in the process. (The caller should check
+ later and do so if appropriate.) */
- if (NILP (XBUFFER (buffer)->name))
- error ("Attempt to display deleted buffer");
+void
+set_window_width (window, width, nodelete)
+ Lisp_Object window;
+ int width;
+ int nodelete;
+{
+ size_window (window, width, 1, nodelete);
+}
- 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);
+\f
+int window_select_count;
+
+Lisp_Object
+Fset_window_buffer_unwind (obuf)
+ Lisp_Object obuf;
+{
+ Fset_buffer (obuf);
+ return Qnil;
+}
- unshow_buffer (w);
- }
+
+/* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
+ means it's allowed to run hooks. See make_frame for a case where
+ it's not allowed. */
+
+void
+set_window_buffer (window, buffer, run_hooks_p)
+ Lisp_Object window, buffer;
+ int run_hooks_p;
+{
+ struct window *w = XWINDOW (window);
+ struct buffer *b = XBUFFER (buffer);
+ int count = specpdl_ptr - specpdl;
w->buffer = buffer;
if (EQ (window, selected_window))
- XBUFFER (w->buffer)->last_selected_window = window;
+ b->last_selected_window = window;
/* Update time stamps of buffer display. */
- if (INTEGERP (XBUFFER (buffer)->display_count))
- XSETINT (XBUFFER (buffer)->display_count,
- XINT (XBUFFER (buffer)->display_count) + 1);
- XBUFFER (buffer)->display_time = Fcurrent_time ();
+ if (INTEGERP (b->display_count))
+ XSETINT (b->display_count, XINT (b->display_count) + 1);
+ b->display_time = Fcurrent_time ();
XSETFASTINT (w->window_end_pos, 0);
+ XSETFASTINT (w->window_end_vpos, 0);
+ bzero (&w->last_cursor, sizeof w->last_cursor);
w->window_end_valid = Qnil;
XSETFASTINT (w->hscroll, 0);
- set_marker_both (w->pointm, buffer,
- BUF_PT (XBUFFER (buffer)), BUF_PT_BYTE (XBUFFER (buffer)));
+ set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b));
set_marker_restricted (w->start,
- make_number (XBUFFER (buffer)->last_window_start),
+ make_number (b->last_window_start),
buffer);
w->start_at_line_beg = Qnil;
w->force_start = Qnil;
Fset_buffer (buffer);
}
- if (! NILP (Vwindow_scroll_functions))
- run_hook_with_args_2 (Qwindow_scroll_functions, window,
- Fmarker_position (w->start));
+ /* Set left and right marginal area width from buffer. */
+ Fset_window_margins (window, b->left_margin_width, b->right_margin_width);
- if (! NILP (Vwindow_configuration_change_hook)
- && ! NILP (Vrun_hooks))
- call1 (Vrun_hooks, Qwindow_configuration_change_hook);
+ if (run_hooks_p)
+ {
+ if (! NILP (Vwindow_scroll_functions))
+ run_hook_with_args_2 (Qwindow_scroll_functions, window,
+ Fmarker_position (w->start));
+
+ if (! NILP (Vwindow_configuration_change_hook)
+ && ! NILP (Vrun_hooks))
+ call1 (Vrun_hooks, Qwindow_configuration_change_hook);
+ }
unbind_to (count, 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);
+
+ XSETWINDOW (window, w);
+ 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);
+ }
+ set_window_buffer (window, buffer, 1);
return Qnil;
}
selects the buffer of the selected window before each command.")
(window)
register Lisp_Object window;
+{
+ return select_window_1 (window, 1);
+}
+\f
+/* Note that selected_window can be nil
+ when this is called from Fset_window_configuration. */
+
+static Lisp_Object
+select_window_1 (window, recordflag)
+ register Lisp_Object window;
+ int recordflag;
{
register struct window *w;
- register struct window *ow = XWINDOW (selected_window);
+ register struct window *ow;
+ struct frame *sf;
CHECK_LIVE_WINDOW (window, 0);
if (EQ (window, selected_window))
return window;
- if (! NILP (ow->buffer))
- set_marker_both (ow->pointm, ow->buffer,
- BUF_PT (XBUFFER (ow->buffer)),
- BUF_PT_BYTE (XBUFFER (ow->buffer)));
+ if (!NILP (selected_window))
+ {
+ ow = XWINDOW (selected_window);
+ if (! NILP (ow->buffer))
+ set_marker_both (ow->pointm, ow->buffer,
+ BUF_PT (XBUFFER (ow->buffer)),
+ BUF_PT_BYTE (XBUFFER (ow->buffer)));
+ }
selected_window = window;
- if (XFRAME (WINDOW_FRAME (w)) != selected_frame)
+ sf = SELECTED_FRAME ();
+ if (XFRAME (WINDOW_FRAME (w)) != sf)
{
XFRAME (WINDOW_FRAME (w))->selected_window = window;
/* Use this rather than Fhandle_switch_frame
Fselect_frame (WINDOW_FRAME (w), Qnil);
}
else
- selected_frame->selected_window = window;
+ sf->selected_window = window;
- record_buffer (w->buffer);
+ if (recordflag)
+ record_buffer (w->buffer);
Fset_buffer (w->buffer);
XBUFFER (w->buffer)->last_selected_window = window;
windows_or_buffers_changed++;
return window;
}
-
+\f
/* Deiconify the frame containing the window WINDOW,
unless it is the selected frame;
then return WINDOW.
display_buffer_1 (window)
Lisp_Object window;
{
- FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window)));
+ Lisp_Object frame = XWINDOW (window)->frame;
+ FRAME_PTR f = XFRAME (frame);
+
FRAME_SAMPLE_VISIBILITY (f);
- if (f != selected_frame)
+
+ if (!EQ (frame, selected_frame))
{
if (FRAME_ICONIFIED_P (f))
- Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
+ Fmake_frame_visible (frame);
else if (FRAME_VISIBLE_P (f))
- Fraise_frame (WINDOW_FRAME (XWINDOW (window)));
+ Fraise_frame (frame);
}
+
return window;
}
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\
+If `display-reuse-frames' is non-nil, and another frame is currently\n\
+displaying BUFFER, then simply raise that frame.\n\
\n\
The variables `special-display-buffer-names', `special-display-regexps',\n\
`same-window-buffer-names', and `same-window-regexps' customize how certain\n\
If FRAME is a frame, search only that frame.\n\
If FRAME is nil, search only the selected frame\n\
(actually the last nonminibuffer frame),\n\
- unless `pop-up-frames' is non-nil,\n\
+ unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,\n\
which means search visible and iconified frames.")
(buffer, not_this_window, frame)
register Lisp_Object buffer, not_this_window, frame;
{
- register Lisp_Object window, tem;
+ register Lisp_Object window, tem, swp;
+ struct frame *f;
+ swp = Qnil;
buffer = Fget_buffer (buffer);
CHECK_BUFFER (buffer, 0);
in the selected window. */
if (NILP (not_this_window))
{
- tem = Fsame_window_p (XBUFFER (buffer)->name);
- if (!NILP (tem))
+ swp = Fsame_window_p (XBUFFER (buffer)->name);
+ if (!NILP (swp) && !no_switch_window (selected_window))
{
Fswitch_to_buffer (buffer, Qnil);
return display_buffer_1 (selected_window);
}
}
- /* If pop_up_frames,
+ /* If the user wants pop-up-frames or display-reuse-frames, then
look for a window showing BUFFER on any visible or iconified frame.
Otherwise search only the current frame. */
if (! NILP (frame))
tem = frame;
- else if (pop_up_frames || last_nonminibuf_frame == 0)
+ else if (pop_up_frames
+ || display_buffer_reuse_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);
- }
+ return display_buffer_1 (window);
/* Certain buffer names get special handling. */
- if (!NILP (Vspecial_display_function))
+ if (!NILP (Vspecial_display_function) && NILP (swp))
{
tem = Fspecial_display_p (XBUFFER (buffer)->name);
if (EQ (tem, Qt))
return display_buffer_1 (window);
}
+ f = SELECTED_FRAME ();
if (pop_up_windows
- || FRAME_MINIBUF_ONLY_P (selected_frame)
+ || FRAME_MINIBUF_ONLY_P (f)
/* If the current frame is a special display frame,
don't try to reuse its windows. */
- || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated)
- )
+ || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated))
{
Lisp_Object frames;
frames = Qnil;
- if (FRAME_MINIBUF_ONLY_P (selected_frame))
+ if (FRAME_MINIBUF_ONLY_P (f))
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)
/* 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))
+ if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame))
{
/* Try visible frames first. */
window = Fget_largest_window (Qvisible);
{
int total = (XFASTINT (XWINDOW (other)->height)
+ XFASTINT (XWINDOW (window)->height));
- Lisp_Object old_selected_window;
- old_selected_window = selected_window;
-
- selected_window = upper;
- change_window_height ((total / 2
- - XFASTINT (XWINDOW (upper)->height)),
- 0);
- selected_window = old_selected_window;
+ enlarge_window (upper,
+ total / 2 - XFASTINT (XWINDOW (upper)->height),
+ 0);
}
}
}
BEGV = BEG;
ZV = Z;
SET_PT (BEG);
- XBUFFER (buf)->clip_changed = 1;
+ XBUFFER (buf)->prevent_redisplay_optimizations_p = 1;
set_buffer_internal (old);
if (!EQ (Vtemp_buffer_show_function, Qnil))
{
window = Fdisplay_buffer (buf, Qnil, Qnil);
- if (XFRAME (XWINDOW (window)->frame) != selected_frame)
+ if (!EQ (XWINDOW (window)->frame, selected_frame))
Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
Vminibuf_scroll_window = window;
w = XWINDOW (window);
if (!NILP (tem))
{
int count = specpdl_ptr - specpdl;
+ Lisp_Object prev_window;
+ prev_window = selected_window;
/* Select the window that was chosen, for running the hook. */
- record_unwind_protect (Fset_window_configuration,
- Fcurrent_window_configuration (Qnil));
-
- Fselect_window (window);
+ record_unwind_protect (Fselect_window, prev_window);
+ select_window_1 (window, 0);
Fset_buffer (w->buffer);
call1 (Vrun_hooks, Qtemp_buffer_show_hook);
+ select_window_1 (prev_window, 0);
unbind_to (count, Qnil);
}
}
"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.")
+and put SIZE columns in the first of the pair. In that case,\n\
+SIZE includes that window's scroll bar, or the divider column to its right.")
(window, size, horflag)
Lisp_Object window, size, horflag;
{
{
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;
+ the usable space in columns by two.
+ We round up, since the left-hand window may include
+ a dividing line, while the right-hand may not. */
+ size_int = (XFASTINT (o->width) + 1) >> 1;
else
size_int = XFASTINT (o->height) >> 1;
}
if (MINI_WINDOW_P (o))
error ("Attempt to split minibuffer window");
+ else if (window_fixed_size_p (o, !NILP (horflag), 0))
+ error ("Attempt to split fixed-size window");
check_min_window_sizes ();
o->next = new;
p->parent = o->parent;
p->buffer = Qt;
+ p->window_end_valid = Qnil;
+ bzero (&p->last_cursor, sizeof p->last_cursor);
/* Apportion the available frame space among the two new windows */
XSETFASTINT (p->top, XFASTINT (o->top) + size_int);
}
+ /* Adjust glyph matrices. */
+ adjust_glyphs (fo);
Fset_window_buffer (new, o->buffer);
-
return new;
}
\f
register Lisp_Object arg, side;
{
CHECK_NUMBER (arg, 0);
- change_window_height (XINT (arg), !NILP (side));
+ enlarge_window (selected_window, XINT (arg), !NILP (side));
if (! NILP (Vwindow_configuration_change_hook))
call1 (Vrun_hooks, Qwindow_configuration_change_hook);
register Lisp_Object arg, side;
{
CHECK_NUMBER (arg, 0);
- change_window_height (-XINT (arg), !NILP (side));
+ enlarge_window (selected_window, -XINT (arg), !NILP (side));
if (! NILP (Vwindow_configuration_change_hook))
call1 (Vrun_hooks, Qwindow_configuration_change_hook);
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))
+ *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top))
#define CURSIZE(w) \
- *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height))
+ *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height))
-/* Unlike set_window_height, this function
- also changes the heights of the siblings so as to
- keep everything consistent. */
-void
-change_window_height (delta, widthflag)
- register int delta;
- int widthflag;
+/* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means
+ increase its width. Siblings of the selected window are resized to
+ fullfil the size request. If they become too small in the process,
+ they will be deleted. */
+
+static void
+enlarge_window (window, delta, widthflag)
+ Lisp_Object window;
+ int delta, widthflag;
{
- register Lisp_Object parent;
- Lisp_Object window;
- register struct window *p;
- int *sizep;
+ Lisp_Object parent, next, prev;
+ struct window *p;
+ Lisp_Object *sizep;
+ int maximum;
int (*sizefun) P_ ((Lisp_Object))
= widthflag ? window_width : window_height;
- register void (*setsizefun) P_ ((Lisp_Object, int, int))
+ void (*setsizefun) P_ ((Lisp_Object, int, int))
= (widthflag ? set_window_width : set_window_height);
- int maximum;
- Lisp_Object next, prev;
+ /* Check values of window_min_width and window_min_height for
+ validity. */
check_min_window_sizes ();
- window = selected_window;
+ /* Give up if this window cannot be resized. */
+ if (window_fixed_size_p (XWINDOW (window), widthflag, 1))
+ error ("Window is not resizable");
+
+ /* Find the parent of the 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)
+
+ if (widthflag
+ ? !NILP (XWINDOW (parent)->hchild)
: !NILP (XWINDOW (parent)->vchild))
break;
+
window = parent;
}
{
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)
+ maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep)
+ : !NILP (p->next) ? ((*sizefun) (p->next)
+ - window_min_size (XWINDOW (p->next),
+ widthflag, 0, 0))
+ : !NILP (p->prev) ? ((*sizefun) (p->prev)
+ - window_min_size (XWINDOW (p->prev),
+ widthflag, 0, 0))
/* This is a frame with only one window, a minibuffer-only
or a minibufferless frame. */
: (delta = 0));
delta = maxdelta;
}
- if (*sizep + delta < MINSIZE (window))
+ if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0))
{
delete_window (window);
return;
/* Find the total we can get from other siblings. */
maximum = 0;
for (next = p->next; ! NILP (next); next = XWINDOW (next)->next)
- maximum += (*sizefun) (next) - MINSIZE (next);
+ maximum += (*sizefun) (next) - window_min_size (XWINDOW (next),
+ widthflag, 0, 0);
for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev)
- maximum += (*sizefun) (prev) - MINSIZE (prev);
+ maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev),
+ widthflag, 0, 0);
/* If we can get it all from them, do so. */
if (delta <= maximum)
{
Lisp_Object first_unaffected;
Lisp_Object first_affected;
+ int fixed_p;
next = p->next;
prev = p->prev;
/* Look at one sibling at a time,
moving away from this window in both directions alternately,
and take as much as we can get without deleting that sibling. */
- while (delta != 0)
+ while (delta != 0 && (!NILP (next) || !NILP (prev)))
{
- if (delta == 0)
- break;
if (! NILP (next))
{
- int this_one = (*sizefun) (next) - MINSIZE (next);
- if (this_one > delta)
- this_one = delta;
-
- (*setsizefun) (next, (*sizefun) (next) - this_one, 0);
- (*setsizefun) (window, *sizep + this_one, 0);
+ int this_one = ((*sizefun) (next)
+ - window_min_size (XWINDOW (next),
+ widthflag, 0, &fixed_p));
+ if (!fixed_p)
+ {
+ if (this_one > delta)
+ this_one = delta;
+
+ (*setsizefun) (next, (*sizefun) (next) - this_one, 0);
+ (*setsizefun) (window, XINT (*sizep) + this_one, 0);
- delta -= this_one;
+ delta -= this_one;
+ }
+
next = XWINDOW (next)->next;
}
+
if (delta == 0)
break;
+
if (! NILP (prev))
{
- int this_one = (*sizefun) (prev) - MINSIZE (prev);
- if (this_one > delta)
- this_one = delta;
-
- first_affected = prev;
-
- (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0);
- (*setsizefun) (window, *sizep + this_one, 0);
-
- delta -= this_one;
+ int this_one = ((*sizefun) (prev)
+ - window_min_size (XWINDOW (prev),
+ widthflag, 0, &fixed_p));
+ if (!fixed_p)
+ {
+ if (this_one > delta)
+ this_one = delta;
+
+ first_affected = prev;
+
+ (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0);
+ (*setsizefun) (window, XINT (*sizep) + this_one, 0);
+
+ delta -= this_one;
+ }
+
prev = XWINDOW (prev)->prev;
}
}
+ xassert (delta == 0);
+
/* Now recalculate the edge positions of all the windows affected,
based on the new sizes. */
first_unaffected = next;
for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected);
prev = next, next = XWINDOW (next)->next)
{
- CURBEG (next) = CURBEG (prev) + (*sizefun) (prev);
+ XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev));
/* This does not change size of NEXT,
but it propagates the new top edge to its children */
(*setsizefun) (next, (*sizefun) (next), 0);
/* 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)
+ if (opht <= XINT (*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);
+ {
+ /* 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.
+
+ The function size_window will compute the new height h'
+ of the window from delta1 as:
+
+ e = delta1/n
+ x = delta1 - delta1/n * n for the 1st resizable child
+ h' = h + e + x
+
+ where n is the number of children that can be resized.
+ We can ignore x by choosing a delta1 that is a multiple of
+ n. We want the height of this window to come out as
+
+ h' = h + delta
+
+ So, delta1 must be
+
+ h + e = h + delta
+ delta1/n = delta
+ delta1 = n * delta.
+
+ The number of children n rquals the number of resizable
+ children of this window + 1 because we know window itself
+ is resizable (otherwise we would have signalled an error. */
+
+ struct window *w = XWINDOW (window);
+ Lisp_Object s;
+ int n = 1;
+
+ for (s = w->next; !NILP (s); s = XWINDOW (s)->next)
+ if (!window_fixed_size_p (XWINDOW (s), widthflag, 0))
+ ++n;
+ for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev)
+ if (!window_fixed_size_p (XWINDOW (s), widthflag, 0))
+ ++n;
+
+ delta1 = n * delta;
+ }
/* 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);
+ XSETINT (CURSIZE (parent), opht + delta1);
+ (*setsizefun) (window, XINT (*sizep) + delta1, 0);
/* Squeeze out delta1 lines or columns from our parent,
shriking this window and siblings proportionately.
XSETFASTINT (p->last_modified, 0);
XSETFASTINT (p->last_overlay_modified, 0);
+
+ /* Adjust glyph matrices. */
+ adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window))));
}
-#undef MINSIZE
+
#undef CURBEG
#undef CURSIZE
+
+\f
+/***********************************************************************
+ Resizing Mini-Windows
+ ***********************************************************************/
+
+static void shrink_window_lowest_first P_ ((struct window *, int));
+
+enum save_restore_action
+{
+ CHECK_ORIG_SIZES,
+ SAVE_ORIG_SIZES,
+ RESTORE_ORIG_SIZES
+};
+
+static int save_restore_orig_size P_ ((struct window *,
+ enum save_restore_action));
+
+/* Shrink windows rooted in window W to HEIGHT. Take the space needed
+ from lowest windows first. */
+
+static void
+shrink_window_lowest_first (w, height)
+ struct window *w;
+ int height;
+{
+ struct window *c;
+ Lisp_Object child;
+ int old_height;
+
+ xassert (!MINI_WINDOW_P (w));
+
+ /* Set redisplay hints. */
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ windows_or_buffers_changed++;
+ FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1;
+
+ old_height = XFASTINT (w->height);
+ XSETFASTINT (w->height, height);
+
+ if (!NILP (w->hchild))
+ {
+ for (child = w->hchild; !NILP (child); child = c->next)
+ {
+ c = XWINDOW (child);
+ c->top = w->top;
+ shrink_window_lowest_first (c, height);
+ }
+ }
+ else if (!NILP (w->vchild))
+ {
+ Lisp_Object last_child;
+ int delta = old_height - height;
+ int last_top;
+
+ last_child = Qnil;
+
+ /* Find the last child. We are taking space from lowest windows
+ first, so we iterate over children from the last child
+ backwards. */
+ for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next)
+ last_child = child;
+
+ /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
+ for (child = last_child; delta && !NILP (child); child = c->prev)
+ {
+ int this_one;
+
+ c = XWINDOW (child);
+ this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT;
+
+ if (this_one > delta)
+ this_one = delta;
+
+ shrink_window_lowest_first (c, XFASTINT (c->height) - this_one);
+ delta -= this_one;
+ }
+
+ /* Compute new positions. */
+ last_top = XINT (w->top);
+ for (child = w->vchild; !NILP (child); child = c->next)
+ {
+ c = XWINDOW (child);
+ c->top = make_number (last_top);
+ shrink_window_lowest_first (c, XFASTINT (c->height));
+ last_top += XFASTINT (c->height);
+ }
+ }
+}
+
+
+/* Save, restore, or check positions and sizes in the window tree
+ rooted at W. ACTION says what to do.
+
+ If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height
+ members are valid for all windows in the window tree. Value is
+ non-zero if they are valid.
+
+ If ACTION is SAVE_ORIG_SIZES, save members top and height in
+ orig_top and orig_height for all windows in the tree.
+
+ If ACTION is RESTORE_ORIG_SIZES, restore top and height from
+ values stored in orig_top and orig_height for all windows. */
+
+static int
+save_restore_orig_size (w, action)
+ struct window *w;
+ enum save_restore_action action;
+{
+ int success_p = 1;
+
+ while (w)
+ {
+ if (!NILP (w->hchild))
+ {
+ if (!save_restore_orig_size (XWINDOW (w->hchild), action))
+ success_p = 0;
+ }
+ else if (!NILP (w->vchild))
+ {
+ if (!save_restore_orig_size (XWINDOW (w->vchild), action))
+ success_p = 0;
+ }
+
+ switch (action)
+ {
+ case CHECK_ORIG_SIZES:
+ if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height))
+ return 0;
+ break;
+
+ case SAVE_ORIG_SIZES:
+ w->orig_top = w->top;
+ w->orig_height = w->height;
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ break;
+
+ case RESTORE_ORIG_SIZES:
+ xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height));
+ w->top = w->orig_top;
+ w->height = w->orig_height;
+ w->orig_height = w->orig_top = Qnil;
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ break;
+
+ default:
+ abort ();
+ }
+
+ w = NILP (w->next) ? NULL : XWINDOW (w->next);
+ }
+
+ return success_p;
+}
+
+
+/* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
+ without deleting other windows. */
+
+void
+grow_mini_window (w, delta)
+ struct window *w;
+ int delta;
+{
+ struct frame *f = XFRAME (w->frame);
+ struct window *root;
+
+ xassert (MINI_WINDOW_P (w));
+ xassert (delta >= 0);
+
+ /* Check values of window_min_width and window_min_height for
+ validity. */
+ check_min_window_sizes ();
+
+ /* Compute how much we can enlarge the mini-window without deleting
+ other windows. */
+ root = XWINDOW (FRAME_ROOT_WINDOW (f));
+ if (delta)
+ {
+ int min_height = window_min_size (root, 0, 0, 0);
+ if (XFASTINT (root->height) - delta < min_height)
+ delta = XFASTINT (root->height) - min_height;
+ }
+
+ if (delta)
+ {
+ /* Save original window sizes and positions, if not already done. */
+ if (!save_restore_orig_size (root, CHECK_ORIG_SIZES))
+ save_restore_orig_size (root, SAVE_ORIG_SIZES);
+
+ /* Shrink other windows. */
+ shrink_window_lowest_first (root, XFASTINT (root->height) - delta);
+
+ /* Grow the mini-window. */
+ w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height));
+ w->height = make_number (XFASTINT (w->height) + delta);
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+
+ adjust_glyphs (f);
+ }
+}
+
+
+/* Shrink mini-window W. If there is recorded info about window sizes
+ before a call to grow_mini_window, restore recorded window sizes.
+ Otherwise, if the mini-window is higher than 1 line, resize it to 1
+ line. */
+
+void
+shrink_mini_window (w)
+ struct window *w;
+{
+ struct frame *f = XFRAME (w->frame);
+ struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f));
+
+ if (save_restore_orig_size (root, CHECK_ORIG_SIZES))
+ {
+ save_restore_orig_size (root, RESTORE_ORIG_SIZES);
+ adjust_glyphs (f);
+ FRAME_WINDOW_SIZES_CHANGED (f) = 1;
+ windows_or_buffers_changed = 1;
+ }
+ else if (XFASTINT (w->height) > 1)
+ {
+ Lisp_Object window;
+ XSETWINDOW (window, w);
+ enlarge_window (window, 1 - XFASTINT (w->height), 0);
+ }
+}
+
+
\f
+/* Mark window cursors off for all windows in the window tree rooted
+ at W by setting their phys_cursor_on_p flag to zero. Called from
+ xterm.c, e.g. when a frame is cleared and thereby all cursors on
+ the frame are cleared. */
+
+void
+mark_window_cursors_off (w)
+ struct window *w;
+{
+ while (w)
+ {
+ if (!NILP (w->hchild))
+ mark_window_cursors_off (XWINDOW (w->hchild));
+ else if (!NILP (w->vchild))
+ mark_window_cursors_off (XWINDOW (w->vchild));
+ else
+ w->phys_cursor_on_p = 0;
+
+ w = NILP (w->next) ? 0 : XWINDOW (w->next);
+ }
+}
+
+
/* Return number of lines of text (not counting mode line) in W. */
int
{
int ht = XFASTINT (w->height);
- if (MINI_WINDOW_P (w))
- return ht;
+ 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;
+{
+ struct frame *f = XFRAME (WINDOW_FRAME (w));
+ int width = XINT (w->width);
+
+ if (FRAME_HAS_VERTICAL_SCROLL_BARS (f))
+ /* Scroll bars occupy a few columns. */
+ width -= FRAME_SCROLL_BAR_COLS (f);
+ else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w))
+ /* The column of `|' characters separating side-by-side windows
+ occupies one column only. */
+ width -= 1;
+
+ /* On window-systems, areas to the left and right of the window
+ are used to display bitmaps there. */
+ if (FRAME_WINDOW_P (f))
+ width -= FRAME_FLAGS_AREA_COLS (f);
+
+ return width;
+}
+
+\f
+/************************************************************************
+ Window Scrolling
+ ***********************************************************************/
+
+/* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
+ one screen-full, which is defined as the height of the window minus
+ next_screen_context_lines. If WHOLE is zero, scroll up N lines
+ instead. Negative values of N mean scroll down. NOERROR non-zero
+ means don't signal an error if we try to move over BEGV or ZV,
+ respectively. */
+
+static void
+window_scroll (window, n, whole, noerror)
+ Lisp_Object window;
+ int n;
+ int whole;
+ int noerror;
+{
+ /* If we must, use the pixel-based version which is much slower than
+ the line-based one but can handle varying line heights. */
+ if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame)))
+ window_scroll_pixel_based (window, n, whole, noerror);
+ else
+ window_scroll_line_based (window, n, whole, noerror);
+}
+
+
+/* Implementation of window_scroll that works based on pixel line
+ heights. See the comment of window_scroll for parameter
+ descriptions. */
+
+static void
+window_scroll_pixel_based (window, n, whole, noerror)
+ Lisp_Object window;
+ int n;
+ int whole;
+ int noerror;
+{
+ struct it it;
+ struct window *w = XWINDOW (window);
+ struct text_pos start;
+ Lisp_Object tem;
+ int this_scroll_margin;
+ int preserve_y;
- 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;
+ SET_TEXT_POS_FROM_MARKER (start, w->start);
+
+ /* If PT is not visible in WINDOW, move back one half of
+ the screen. */
+ XSETFASTINT (tem, PT);
+ tem = Fpos_visible_in_window_p (tem, window, Qnil);
+ if (NILP (tem))
+ {
+ /* Move backward half the height of the window. Performance note:
+ vmotion used here is about 10% faster, but would give wrong
+ results for variable height lines. */
+ init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID);
+ it.current_y = it.last_visible_y;
+ move_it_vertically (&it, -it.last_visible_y / 2);
+
+ /* The function move_iterator_vertically may move over more than
+ the specified y-distance. If it->w is small, e.g. a
+ mini-buffer window, we may end up in front of the window's
+ display area. This is the case when Start displaying at the
+ start of the line containing PT in this case. */
+ if (it.current_y <= 0)
+ {
+ init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID);
+ move_it_vertically (&it, 0);
+ it.current_y = 0;
+ }
- return ht;
-}
+ start = it.current.pos;
+ }
+ /* If scroll_preserve_screen_position is non-zero, we try to set
+ point in the same window line as it is now, so get that line. */
+ if (!NILP (Vscroll_preserve_screen_position))
+ {
+ start_display (&it, w, start);
+ move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS);
+ preserve_y = it.current_y;
+ }
+ else
+ preserve_y = -1;
-/* 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);
+ /* Move iterator it from start the specified distance forward or
+ backward. The result is the new window start. */
+ start_display (&it, w, start);
+ if (whole)
+ {
+ int screen_full = (it.last_visible_y
+ - next_screen_context_lines * CANON_Y_UNIT (it.f));
+ int direction = n < 0 ? -1 : 1;
+ move_it_vertically (&it, direction * screen_full);
+ }
+ else
+ move_it_by_lines (&it, n, 1);
- /* Scroll bars occupy a few columns. */
- if (FRAME_HAS_VERTICAL_SCROLL_BARS (f))
- return width - FRAME_SCROLL_BAR_COLS (f);
+ /* End if we end up at ZV or BEGV. */
+ if ((n > 0 && IT_CHARPOS (it) == ZV)
+ || (n < 0 && IT_CHARPOS (it) == CHARPOS (start)))
+ {
+ if (noerror)
+ return;
+ else if (IT_CHARPOS (it) == ZV)
+ Fsignal (Qend_of_buffer, Qnil);
+ else
+ Fsignal (Qbeginning_of_buffer, Qnil);
+ }
- /* 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;
+ /* Set the window start, and set up the window for redisplay. */
+ set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), w->buffer);
+ w->start_at_line_beg = Fbolp ();
+ 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;
+
+ it.current_y = it.vpos = 0;
+
+ /* Preserve the screen position if we must. */
+ if (preserve_y >= 0)
+ {
+ move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y);
+ SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
+ }
+ else
+ {
+ /* Move PT out of scroll margins. */
+ this_scroll_margin = max (0, scroll_margin);
+ this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4);
+ this_scroll_margin *= CANON_Y_UNIT (it.f);
- return width;
+ if (n > 0)
+ {
+ /* We moved the window start towards ZV, so PT may be now
+ in the scroll margin at the top. */
+ move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS);
+ while (it.current_y < this_scroll_margin)
+ move_it_by_lines (&it, 1, 1);
+ SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
+ }
+ else if (n < 0)
+ {
+ /* We moved the window start towards BEGV, so PT may be now
+ in the scroll margin at the bottom. */
+ move_it_to (&it, PT, -1,
+ it.last_visible_y - this_scroll_margin - 1, -1,
+ MOVE_TO_POS | MOVE_TO_Y);
+
+ /* Don't put point on a partially visible line at the end. */
+ if (it.current_y + it.max_ascent + it.max_descent
+ > it.last_visible_y)
+ move_it_by_lines (&it, -1, 0);
+
+ SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
+ }
+ }
}
-/* Scroll contents of window WINDOW up N lines.
- If WHOLE is nonzero, it means scroll N screenfuls instead. */
+/* Implementation of window_scroll that works based on screen lines.
+ See the comment of window_scroll for parameter descriptions. */
static void
-window_scroll (window, n, whole, noerror)
+window_scroll_line_based (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 opoint_byte = PT_BYTE;
+ register int opoint = PT, opoint_byte = PT_BYTE;
register int pos, pos_byte;
register int ht = window_internal_height (w);
register Lisp_Object tem;
int lose;
- Lisp_Object bolp, nmoved;
+ Lisp_Object bolp;
int startpos;
struct position posit;
int original_vpos;
original_vpos = posit.vpos;
XSETFASTINT (tem, PT);
- tem = Fpos_visible_in_window_p (tem, window);
+ tem = Fpos_visible_in_window_p (tem, window, Qnil);
if (NILP (tem))
{
the window-scroll-functions. */
w->force_start = Qt;
- if (whole && scroll_preserve_screen_position)
+ if (whole && !NILP (Vscroll_preserve_screen_position))
{
SET_PT_BOTH (pos, pos_byte);
Fvertical_motion (make_number (original_vpos), window);
if (top_margin <= opoint)
SET_PT_BOTH (opoint, opoint_byte);
- else if (scroll_preserve_screen_position)
+ else if (!NILP (Vscroll_preserve_screen_position))
{
SET_PT_BOTH (pos, pos_byte);
Fvertical_motion (make_number (original_vpos), window);
SET_PT_BOTH (opoint, opoint_byte);
else
{
- if (scroll_preserve_screen_position)
+ if (!NILP (Vscroll_preserve_screen_position))
{
SET_PT_BOTH (pos, pos_byte);
Fvertical_motion (make_number (original_vpos), window);
Fsignal (Qend_of_buffer, Qnil);
}
}
-\f
-/* This is the guts of Fscroll_up and Fscroll_down. */
+
+
+/* Scroll selected_window up or down. If N is nil, scroll a
+ screen-full which is defined as the height of the window minus
+ next_screen_context_lines. If N is the symbol `-', scroll.
+ DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
+ up. This is the guts of Fscroll_up and Fscroll_down. */
static void
scroll_command (n, direction)
- register Lisp_Object n;
+ 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. */
+ xassert (abs (direction) == 1);
+
+ /* 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);
+
+ /* Make redisplay consider other windows than just selected_window. */
+ ++windows_or_buffers_changed;
}
defalt = (window_internal_height (XWINDOW (selected_window))
"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\
-If ARG is the atom `-', scroll downward by nearly full screen.
-When calling from a program, supply as argument a number, nil, or '-.")
+If ARG is the atom `-', scroll downward by nearly full screen.\n\
+When calling from a program, supply as argument a number, nil, or `-'.")
(arg)
Lisp_Object arg;
{
"Scroll text of current window down 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\
-If ARG is the atom `-', scroll upward by nearly full screen.
-When calling from a program, supply as argument a number, nil, or '-.")
+If ARG is the atom `-', scroll upward by nearly full screen.\n\
+When calling from a program, supply as argument a number, nil, or `-'.")
(arg)
Lisp_Object arg;
{
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\
-A near full screen is `next-screen-context-lines' less than a full screen.
+A near full screen is `next-screen-context-lines' less than a full screen.\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\
-If ARG is the atom `-', scroll downward by nearly full screen.
-When calling from a program, supply as argument a number, nil, or '-.\n\
+If ARG is the atom `-', scroll downward by nearly full screen.\n\
+When calling from a program, supply as argument a number, nil, or `-'.\n\
\n\
If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\
specifies the window to scroll.\n\
/* Don't screw up if window_scroll gets an error. */
record_unwind_protect (save_excursion_restore, save_excursion_save ());
+ ++windows_or_buffers_changed;
Fset_buffer (w->buffer);
SET_PT (marker_position (w->pointm));
if (NILP (arg))
{
extern int frame_garbaged;
+ int i;
+ /* Invalidate pixel data calculated for all compositions. */
+ for (i = 0; i < n_compositions; i++)
+ composition_table[i]->font = NULL;
+
+ Fredraw_frame (w->frame);
SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w)));
XSETFASTINT (arg, ht / 2);
}
return Qnil;
}
+
+
+/* Value is the number of lines actually displayed in window W,
+ as opposed to its height. */
+
+static int
+displayed_window_lines (w)
+ struct window *w;
+{
+ struct it it;
+ struct text_pos start;
+ int height = window_box_height (w);
+ struct buffer *old_buffer;
+ int bottom_y;
+
+ if (XBUFFER (w->buffer) != current_buffer)
+ {
+ old_buffer = current_buffer;
+ set_buffer_internal (XBUFFER (w->buffer));
+ }
+ else
+ old_buffer = NULL;
+
+ SET_TEXT_POS_FROM_MARKER (start, w->start);
+ start_display (&it, w, start);
+ move_it_vertically (&it, height);
+
+ if (old_buffer)
+ set_buffer_internal (old_buffer);
+
+ /* Add in empty lines at the bottom of the window. */
+ bottom_y = it.current_y + it.max_ascent + it.max_descent;
+ if (bottom_y < height)
+ {
+ struct frame *f = XFRAME (w->frame);
+ int rest = height - bottom_y;
+ int lines = (rest + CANON_Y_UNIT (f) - 1) / CANON_Y_UNIT (f);
+ it.vpos += lines;
+ }
+ else if (it.current_y < height && bottom_y > height)
+ /* Partially visible line at the bottom. */
+ ++it.vpos;
+
+ return it.vpos;
+}
+
+
\f
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.")
+An argument specifies vertical position within the window;\n\
+zero means top of window, negative means relative to bottom of window.")
(arg)
- register Lisp_Object arg;
+ Lisp_Object arg;
{
- register struct window *w = XWINDOW (selected_window);
- register int height = window_internal_height (w);
- register int start;
+ struct window *w = XWINDOW (selected_window);
+ int lines, 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);
- }
-
+ window = selected_window;
start = marker_position (w->start);
- XSETWINDOW (window, w);
if (start < BEGV || start > ZV)
{
+ int height = window_internal_height (w);
Fvertical_motion (make_number (- (height / 2)), window);
set_marker_both (w->start, w->buffer, PT, PT_BYTE);
w->start_at_line_beg = Fbolp ();
else
Fgoto_char (w->start);
+ lines = displayed_window_lines (w);
+ if (NILP (arg))
+ XSETFASTINT (arg, lines / 2);
+ else
+ {
+ arg = Fprefix_numeric_value (arg);
+ if (XINT (arg) < 0)
+ XSETINT (arg, XINT (arg) + lines);
+ }
+
return Fvertical_motion (arg, window);
}
+
+
\f
+/***********************************************************************
+ Window Configuration
+ ***********************************************************************/
+
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 frame_tool_bar_lines;
Lisp_Object selected_frame;
Lisp_Object current_window;
Lisp_Object current_buffer;
Lisp_Object parent, prev;
Lisp_Object start_at_line_beg;
Lisp_Object display_table;
+ Lisp_Object orig_top, orig_height;
};
-#define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */
+#define SAVED_WINDOW_VECTOR_SIZE 16 /* Arg to Fmake_vector */
#define SAVED_WINDOW_N(swv,n) \
((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
return Qnil;
}
+DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0,
+ "Return the frame that CONFIG, a window-configuration object, is about.")
+ (config)
+ Lisp_Object config;
+{
+ register struct save_window_data *data;
+ struct Lisp_Vector *saved_windows;
+
+ if (! WINDOW_CONFIGURATIONP (config))
+ wrong_type_argument (Qwindow_configuration_p, config);
+
+ data = (struct save_window_data *) XVECTOR (config);
+ saved_windows = XVECTOR (data->saved_windows);
+ return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame;
+}
+
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)
+by `current-window-configuration' (which see).\n\
+If CONFIGURATION was made from a frame that is now deleted,\n\
+only frame-independent values can be restored. In this case,\n\
+the return value is nil. Otherwise the value is t.")
+ (configuration)
Lisp_Object configuration;
{
register struct save_window_data *data;
int old_point = -1;
while (!WINDOW_CONFIGURATIONP (configuration))
- {
- configuration = wrong_type_argument (intern ("window-configuration-p"),
- configuration);
- }
+ wrong_type_argument (Qwindow_configuration_p, configuration);
data = (struct save_window_data *) XVECTOR (configuration);
saved_windows = XVECTOR (data->saved_windows);
{
if (XBUFFER (new_current_buffer) == current_buffer)
old_point = PT;
-
}
frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame;
{
register struct window *w;
register struct saved_window *p;
- int k;
+ struct window *root_window;
+ struct window **leaf_windows;
+ int n_leaf_windows;
+ int k, i, n;
/* If the frame has been resized since this window configuration was
made, we change the frame to the size specified in the
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);
+ int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f);
/* The mouse highlighting code could get screwed up
if it runs during this. */
if (XFASTINT (data->frame_height) != previous_frame_height
|| XFASTINT (data->frame_width) != previous_frame_width)
change_frame_size (f, XFASTINT (data->frame_height),
- XFASTINT (data->frame_width), 0, 0);
+ XFASTINT (data->frame_width), 0, 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, make_number (0));
+#ifdef HAVE_WINDOW_SYSTEM
+ if (XFASTINT (data->frame_tool_bar_lines)
+ != previous_frame_tool_bar_lines)
+ x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0));
+#endif
#endif
+ /* "Swap out" point from the selected window
+ into its buffer. We do this now, before
+ restoring the window contents, and prevent it from
+ being done later on when we select a new window. */
if (! NILP (XWINDOW (selected_window)->buffer))
{
w = XWINDOW (selected_window);
windows_or_buffers_changed++;
FRAME_WINDOW_SIZES_CHANGED (f) = 1;
+ /* Problem: Freeing all matrices and later allocating them again
+ is a serious redisplay flickering problem. What we would
+ really like to do is to free only those matrices not reused
+ below. */
+ root_window = XWINDOW (FRAME_ROOT_WINDOW (f));
+ leaf_windows
+ = (struct window **) alloca (count_windows (root_window)
+ * sizeof (struct window *));
+ n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0);
+
/* Temporarily avoid any problems with windows that are smaller
than they are supposed to be. */
window_min_height = 1;
w->height = p->height;
w->hscroll = p->hscroll;
w->display_table = p->display_table;
+ w->orig_top = p->orig_top;
+ w->orig_height = p->orig_height;
XSETFASTINT (w->last_modified, 0);
XSETFASTINT (w->last_overlay_modified, 0);
}
FRAME_ROOT_WINDOW (f) = data->root_window;
+ /* Prevent "swapping out point" in the old selected window
+ using the buffer that has been restored into it.
+ That swapping out has already been done,
+ near the beginning of this function. */
+ selected_window = Qnil;
Fselect_window (data->current_window);
XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window
= selected_window;
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);
+ 0, 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, make_number (previous_frame_menu_bar_lines),
make_number (0));
+#ifdef HAVE_WINDOW_SYSTEM
+ if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f))
+ x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines),
+ make_number (0));
#endif
+#endif
+
+ /* Now, free glyph matrices in windows that were not reused. */
+ for (i = n = 0; i < n_leaf_windows; ++i)
+ {
+ if (NILP (leaf_windows[i]->buffer))
+ {
+ /* Assert it's not reused as a combination. */
+ xassert (NILP (leaf_windows[i]->hchild)
+ && NILP (leaf_windows[i]->vchild));
+ free_window_matrices (leaf_windows[i]);
+ SET_FRAME_GARBAGED (f);
+ }
+ else if (EQ (leaf_windows[i]->buffer, new_current_buffer))
+ ++n;
+ }
+
+ /* If more than one window shows the new and old current buffer,
+ don't try to preserve point in that buffer. */
+ if (old_point > 0 && n > 1)
+ old_point = -1;
+
+ adjust_glyphs (f);
UNBLOCK_INPUT;
Vminibuf_scroll_window = data->minibuf_scroll_window;
- return Qnil;
+ return (FRAME_LIVE_P (f) ? Qt : Qnil);
}
/* Mark all windows now on frame as deleted
w->buffer = Qnil;
w->vchild = Qnil;
w->hchild = Qnil;
+
+ Vwindow_list = Qnil;
}
\f
static int
return count;
}
+
+/* Fill vector FLAT with leaf windows under W, starting at index I.
+ Value is last index + 1. */
+
+static int
+get_leaf_windows (w, flat, i)
+ struct window *w;
+ struct window **flat;
+ int i;
+{
+ while (w)
+ {
+ if (!NILP (w->hchild))
+ i = get_leaf_windows (XWINDOW (w->hchild), flat, i);
+ else if (!NILP (w->vchild))
+ i = get_leaf_windows (XWINDOW (w->vchild), flat, i);
+ else
+ flat[i++] = w;
+
+ w = NILP (w->next) ? 0 : XWINDOW (w->next);
+ }
+
+ return i;
+}
+
+
+/* Return a pointer to the glyph W's physical cursor is on. Value is
+ null if W's current matrix is invalid, so that no meaningfull glyph
+ can be returned. */
+
+struct glyph *
+get_phys_cursor_glyph (w)
+ struct window *w;
+{
+ struct glyph_row *row;
+ struct glyph *glyph;
+
+ if (w->phys_cursor.vpos >= 0
+ && w->phys_cursor.vpos < w->current_matrix->nrows
+ && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos),
+ row->enabled_p)
+ && row->used[TEXT_AREA] > w->phys_cursor.hpos)
+ glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos;
+ else
+ glyph = NULL;
+
+ return glyph;
+}
+
+
static int
save_window_save (window, vector, i)
Lisp_Object window;
p->height = w->height;
p->hscroll = w->hscroll;
p->display_table = w->display_table;
+ p->orig_top = w->orig_top;
+ p->orig_height = w->orig_height;
if (!NILP (w->buffer))
{
/* Save w's value of point in the window configuration.
FRAME_PTR f;
if (NILP (frame))
- f = selected_frame;
- else
- {
- CHECK_LIVE_FRAME (frame, 0);
- f = XFRAME (frame);
- }
+ frame = selected_frame;
+ 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));
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);
+ XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f));
+ 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;
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);
+ save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0);
XSETWINDOW_CONFIGURATION (tem, data);
return (tem);
}
"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 the choice of selected 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;
val = Fprogn (args);
return unbind_to (count, val);
}
+
+\f
+/***********************************************************************
+ Marginal Areas
+ ***********************************************************************/
+
+DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins,
+ 2, 3, 0,
+ "Set width of marginal areas of window WINDOW.\n\
+If window is nil, set margins of the currently selected window.\n\
+First parameter LEFT-WIDTH specifies the number of character\n\
+cells to reserve for the left marginal area. Second parameter\n\
+RIGHT-WIDTH does the same for the right marginal area.\n\
+A nil width parameter means no margin.")
+ (window, left, right)
+ Lisp_Object window, left, right;
+{
+ struct window *w = decode_window (window);
+
+ if (!NILP (left))
+ CHECK_NUMBER_OR_FLOAT (left, 1);
+ if (!NILP (right))
+ CHECK_NUMBER_OR_FLOAT (right, 2);
+
+ /* Check widths < 0 and translate a zero width to nil.
+ Margins that are too wide have to be checked elsewhere. */
+ if ((INTEGERP (left) && XINT (left) < 0)
+ || (FLOATP (left) && XFLOAT_DATA (left) <= 0))
+ XSETFASTINT (left, 0);
+ if (INTEGERP (left) && XFASTINT (left) == 0)
+ left = Qnil;
+
+ if ((INTEGERP (right) && XINT (right) < 0)
+ || (FLOATP (right) && XFLOAT_DATA (right) <= 0))
+ XSETFASTINT (right, 0);
+ if (INTEGERP (right) && XFASTINT (right) == 0)
+ right = Qnil;
+
+ w->left_margin_width = left;
+ w->right_margin_width = right;
+
+ ++windows_or_buffers_changed;
+ adjust_glyphs (XFRAME (WINDOW_FRAME (w)));
+ return Qnil;
+}
+
+
+DEFUN ("window-margins", Fwindow_margins, Swindow_margins,
+ 0, 1, 0,
+ "Get width of marginal areas of window WINDOW.\n\
+If WINDOW is omitted or nil, use the currently selected window.\n\
+Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).\n\
+If a marginal area does not exist, its width will be returned\n\
+as nil.")
+ (window)
+ Lisp_Object window;
+{
+ struct window *w = decode_window (window);
+ return Fcons (w->left_margin_width, w->right_margin_width);
+}
+
+
+\f
+/***********************************************************************
+ Smooth scrolling
+ ***********************************************************************/
+
+DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0,
+ "Return the amount by which WINDOW is scrolled vertically.\n\
+Use the selected window if WINDOW is nil or omitted.\n\
+Value is a multiple of the canonical character height of WINDOW.")
+ (window)
+ Lisp_Object window;
+{
+ Lisp_Object result;
+ struct frame *f;
+ struct window *w;
+
+ if (NILP (window))
+ window = selected_window;
+ else
+ CHECK_WINDOW (window, 0);
+ w = XWINDOW (window);
+ f = XFRAME (w->frame);
+
+ if (FRAME_WINDOW_P (f))
+ result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll);
+ else
+ result = make_number (0);
+ return result;
+}
+
+
+DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll,
+ 2, 2, 0,
+ "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\
+WINDOW nil or omitted means use the selected window. VSCROLL is a\n\
+non-negative multiple of the canonical character height of WINDOW.")
+ (window, vscroll)
+ Lisp_Object window, vscroll;
+{
+ struct window *w;
+ struct frame *f;
+
+ if (NILP (window))
+ window = selected_window;
+ else
+ CHECK_WINDOW (window, 0);
+ CHECK_NUMBER_OR_FLOAT (vscroll, 1);
+
+ w = XWINDOW (window);
+ f = XFRAME (w->frame);
+
+ if (FRAME_WINDOW_P (f))
+ {
+ int old_dy = w->vscroll;
+
+ w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll);
+ w->vscroll = min (w->vscroll, 0);
+
+ /* Adjust glyph matrix of the frame if the virtual display
+ area becomes larger than before. */
+ if (w->vscroll < 0 && w->vscroll < old_dy)
+ adjust_glyphs (f);
+
+ /* Prevent redisplay shortcuts. */
+ XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1;
+ }
+
+ return Fwindow_vscroll (window);
+}
+
+\f
+/* Call FN for all leaf windows on frame F. FN is called with the
+ first argument being a pointer to the leaf window, and with
+ additional argument USER_DATA. Stops when FN returns 0. */
+
+void
+foreach_window (f, fn, user_data)
+ struct frame *f;
+ int (* fn) P_ ((struct window *, void *));
+ void *user_data;
+{
+ foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data);
+}
+
+
+/* Helper function for foreach_window. Call FN for all leaf windows
+ reachable from W. FN is called with the first argument being a
+ pointer to the leaf window, and with additional argument USER_DATA.
+ Stop when FN returns 0. Value is 0 if stopped by FN. */
+
+static int
+foreach_window_1 (w, fn, user_data)
+ struct window *w;
+ int (* fn) P_ ((struct window *, void *));
+ void *user_data;
+{
+ int cont;
+
+ for (cont = 1; w && cont;)
+ {
+ if (!NILP (w->hchild))
+ cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data);
+ else if (!NILP (w->vchild))
+ cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data);
+ else
+ cont = fn (w, user_data);
+
+ w = NILP (w->next) ? 0 : XWINDOW (w->next);
+ }
+
+ return cont;
+}
+
+
+/* Freeze or unfreeze the window start of W if unless it is a
+ mini-window or the selected window. FREEZE_P non-null means freeze
+ the window start. */
+
+static int
+freeze_window_start (w, freeze_p)
+ struct window *w;
+ void *freeze_p;
+{
+ if (w == XWINDOW (selected_window)
+ || MINI_WINDOW_P (w)
+ || (MINI_WINDOW_P (XWINDOW (selected_window))
+ && ! NILP (Vminibuf_scroll_window)
+ && w == XWINDOW (Vminibuf_scroll_window)))
+ freeze_p = NULL;
+
+ w->frozen_window_start_p = freeze_p != NULL;
+ return 1;
+}
+
+
+/* Freeze or unfreeze the window starts of all leaf windows on frame
+ F, except the selected window and a mini-window. FREEZE_P non-zero
+ means freeze the window start. */
+
+void
+freeze_window_starts (f, freeze_p)
+ struct frame *f;
+ int freeze_p;
+{
+ foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0));
+}
+
\f
+/***********************************************************************
+ Initialization
+ ***********************************************************************/
+
/* Return 1 if window configurations C1 and C2
describe the same state of affairs. This is used by Fequal. */
struct Lisp_Vector *sw1, *sw2;
int i;
+ if (!WINDOW_CONFIGURATIONP (c1))
+ wrong_type_argument (Qwindow_configuration_p, c1);
+ if (!WINDOW_CONFIGURATIONP (c2))
+ wrong_type_argument (Qwindow_configuration_p, c2);
+
d1 = (struct save_window_data *) XVECTOR (c1);
d2 = (struct save_window_data *) XVECTOR (c2);
sw1 = XVECTOR (d1->saved_windows);
void
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;
+ struct frame *f = make_terminal_frame ();
+ XSETFRAME (selected_frame, f);
+ Vterminal_frame = selected_frame;
+ minibuf_window = f->minibuffer_window;
+ selected_window = f->selected_window;
+ last_nonminibuf_frame = f;
window_initialized = 1;
}
+void
+init_window ()
+{
+ Vwindow_list = Qnil;
+}
+
void
syms_of_window ()
{
+ Qleft_bitmap_area = intern ("left-bitmap-area");
+ staticpro (&Qleft_bitmap_area);
+ Qright_bitmap_area = intern ("right-bitmap-area");
+ staticpro (&Qright_bitmap_area);
+
+ Qwindow_size_fixed = intern ("window-size-fixed");
+ staticpro (&Qwindow_size_fixed);
+
staticpro (&Qwindow_configuration_change_hook);
Qwindow_configuration_change_hook
= intern ("window-configuration-change-hook");
Qwindowp = intern ("windowp");
staticpro (&Qwindowp);
+ Qwindow_configuration_p = intern ("window-configuration-p");
+ staticpro (&Qwindow_configuration_p);
+
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);
+ staticpro (&Vwindow_list);
+
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\
"*Non-nil means `display-buffer' should make a separate frame.");
pop_up_frames = 0;
+ DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames,
+ "*Non-nil means `display-buffer' should reuse frames.\n\
+If the buffer in question is already displayed in a frame, raise that frame.");
+ display_buffer_reuse_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\
"*Delete any window less than this wide.");
window_min_width = 10;
- DEFVAR_BOOL ("scroll-preserve-screen-position",
- &scroll_preserve_screen_position,
+ DEFVAR_LISP ("scroll-preserve-screen-position",
+ &Vscroll_preserve_screen_position,
"*Nonzero means scroll commands move point to keep its screen line unchanged.");
- scroll_preserve_screen_position = 0;
+ Vscroll_preserve_screen_position = Qnil;
DEFVAR_LISP ("window-configuration-change-hook",
&Vwindow_configuration_change_hook,
defsubr (&Srecenter);
defsubr (&Smove_to_window_line);
defsubr (&Swindow_configuration_p);
+ defsubr (&Swindow_configuration_frame);
defsubr (&Sset_window_configuration);
defsubr (&Scurrent_window_configuration);
defsubr (&Ssave_window_excursion);
+ defsubr (&Sset_window_margins);
+ defsubr (&Swindow_margins);
+ defsubr (&Swindow_vscroll);
+ defsubr (&Sset_window_vscroll);
defsubr (&Scompare_window_configurations);
+ defsubr (&Swindow_list);
}
void
HCoop / bpt / emacs.git / blobdiff