#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 */
+
+#ifndef max
+#define max(a, b) ((a) < (b) ? (b) : (a))
#endif
+
Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p;
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));
+
+
/* 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
+/* 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;
/* 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->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);
return val;
}
Lisp_Object pos, window;
{
register struct window *w;
- register int top;
- register int height;
+ struct text_pos top;
register int posint;
register struct buffer *buf;
- struct position posval;
- int hscroll;
if (NILP (pos))
posint = PT;
}
w = decode_window (window);
- top = marker_position (w->start);
- hscroll = XINT (w->hscroll);
+ SET_TEXT_POS_FROM_MARKER (top, w->start);
- if (posint < top)
+ /* If position above window, it's not visible. */
+ if (posint < CHARPOS (top))
return Qnil;
- height = XFASTINT (w->height) - ! MINI_WINDOW_P (w);
-
buf = XBUFFER (w->buffer);
if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)
&& XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf))
{
/* If frame is up to date,
- use the info recorded about how much text fit on it. */
- if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)
- || (XFASTINT (w->window_end_vpos) < height))
+ use the info recorded about how much text fit on it. */
+ if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos))
return Qt;
return Qnil;
}
else
{
+ struct it it;
+
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))
+ if (CHARPOS (top) < BUF_BEGV (buf)
+ || CHARPOS (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;
+ start_display (&it, w, top);
+ move_it_to (&it, posint, 0, it.last_visible_y, -1,
+ MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
+ return IT_CHARPOS (it) == posint ? Qt : Qnil;
}
}
\f
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;
+
+ 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_FLAGS_AREA_WIDTH (f);
- if (left_margin != left && *x < left_margin && *x >= left)
- return 3;
-
- if (right_margin != right_edge && *x >= right_margin && *x < right_edge)
- return 3;
-
- /* Is the character is the mode line? */
- if (*y == top + window_height - 1
- && ! MINI_WINDOW_P (w))
- return 2;
+ if (w->pseudo_window_p)
+ {
+ left_x = 0;
+ right_x = XFASTINT (w->width) * CANON_Y_UNIT (f);
+ 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);
+ right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w);
+ top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
+ bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w);
+ }
- *x -= WINDOW_LEFT_MARGIN (w);
- *y -= top;
- return 1;
+ 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)
+ /* Completely outside anything interesting. */
+ return 0;
+ else if (WINDOW_WANTS_MODELINE_P (w)
+ && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w))
+ /* On the mode line. */
+ return 2;
+ else if (WINDOW_WANTS_TOP_LINE_P (w)
+ && *y < top_y + CURRENT_TOP_LINE_HEIGHT (w))
+ /* On the top line. */
+ return 4;
+ else if (*x < left_x || *x >= right_x)
+ /* Other lines than the mode line don't include flags areas and
+ scroll bars on the left. */
+ return 0;
+ else 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 3;
+ else
+ {
+ /* Convert X and Y to window-relative pixel coordinates. */
+ *x -= left_x;
+ *y -= top_y;
+ return 1;
+ }
}
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, `top-line' is returned.\n\
If they are on the border between WINDOW and its right sibling,\n\
`vertical-line' is returned.")
(coordinates, window)
register Lisp_Object coordinates, window;
{
+ 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 Qtop_line;
+
default:
abort ();
}
}
-/* Find the window containing column x, row y, and return it as a
- Lisp_Object. If x, y is on the window's modeline, set *part
- to 1; if it is on the separating line between the window and its
- right sibling, set it to 2; otherwise set it to 0. If there is no
- window under x, y return nil and leave *part unmodified. */
+/* 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. TOOLBAR_P non-zero means detect toolbar windows. */
+
Lisp_Object
-window_from_coordinates (frame, x, y, part)
+window_from_coordinates (frame, x, y, part, toolbar_p)
FRAME_PTR frame;
int x, y;
int *part;
+ int toolbar_p;
{
register Lisp_Object tem, first;
+ int found;
tem = first = FRAME_SELECTED_WINDOW (frame);
do
{
- int found = coordinates_in_window (XWINDOW (tem), &x, &y);
+ found = coordinates_in_window (XWINDOW (tem), &x, &y);
if (found)
{
tem = Fnext_window (tem, Qt, Qlambda);
}
- while (! EQ (tem, first));
+ while (!EQ (tem, first));
+
+ /* See if it's in the toolbar window, if a toolbar exists. */
+ if (toolbar_p
+ && WINDOWP (frame->toolbar_window)
+ && XFASTINT (XWINDOW (frame->toolbar_window)->height)
+ && coordinates_in_window (XWINDOW (frame->toolbar_window), &x, &y))
+ {
+ *part = 0;
+ return frame->toolbar_window;
+ }
return Qnil;
}
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);
+ f = XFRAME (frame);
- return window_from_coordinates (XFRAME (frame),
- XINT (x), XINT (y),
- &part);
+ /* Check that arguments are integers or floats. */
+ CHECK_NUMBER_OR_FLOAT (x, 0);
+ CHECK_NUMBER_OR_FLOAT (y, 1);
+
+ 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,
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)
register Lisp_Object window, table;
{
register struct window *w;
- register Lisp_Object z; /* Return value. */
w = decode_window (window);
w->display_table = table;
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->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;
+ 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. */
+ 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);
}
\f
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);
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;
}
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) */
+/* 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)
return Qnil;
}
-DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0,
- "Make WINDOW display BUFFER as its contents.\n\
-BUFFER can be a buffer or buffer name.")
- (window, buffer)
- register Lisp_Object window, buffer;
-{
- register Lisp_Object tem;
- register struct window *w = decode_window (window);
- int count = specpdl_ptr - specpdl;
-
- buffer = Fget_buffer (buffer);
- CHECK_BUFFER (buffer, 1);
-
- if (NILP (XBUFFER (buffer)->name))
- error ("Attempt to display deleted buffer");
- tem = w->buffer;
- if (NILP (tem))
- error ("Window is deleted");
- else if (! EQ (tem, Qt)) /* w->buffer is t when the window
- is first being set up. */
- {
- if (!NILP (w->dedicated) && !EQ (tem, buffer))
- error ("Window is dedicated to `%s'",
- XSTRING (XBUFFER (tem)->name)->data);
+/* 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. */
- unshow_buffer (w);
- }
+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 (b->left_margin_width, b->right_margin_width,
+ window);
- 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);
+ struct buffer *b;
+
+ 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;
}
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
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
+
+/* 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
/* 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));
+ struct frame *f = XFRAME (WINDOW_FRAME (w));
int width = XINT (w->width);
- /* Scroll bars occupy a few columns. */
if (FRAME_HAS_VERTICAL_SCROLL_BARS (f))
- return width - FRAME_SCROLL_BAR_COLS (f);
-
- /* The column of `|' characters separating side-by-side windows
- occupies one column only. */
- if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w))
- return width - 1;
+ /* 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 -= 2 * FRAME_FLAGS_AREA_COLS (f);
return width;
}
+\f
+/************************************************************************
+ Window Scrolling
+ ***********************************************************************/
-/* Scroll contents of window WINDOW up N lines.
- If WHOLE is nonzero, it means scroll N screenfuls instead. */
+/* 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)
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;
+
+ 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);
+ 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;
+ }
+
+ 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;
+
+ /* 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);
+
+ /* 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);
+ }
+
+ /* 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);
+
+ 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));
+ }
+ }
+}
+
+
+/* Implementation of window_scroll that works based on screen lines.
+ See the comment of window_scroll for parameter descriptions. */
+
+static void
+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;
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))
/* 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));
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_toolbar_lines;
Lisp_Object selected_frame;
Lisp_Object current_window;
Lisp_Object current_buffer;
{
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;
/* 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_toolbar_lines = FRAME_TOOLBAR_LINES (f);
/* The mouse highlighting code could get screwed up
if it runs during this. */
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));
+ if (XFASTINT (data->frame_toolbar_lines)
+ != previous_frame_toolbar_lines)
+ x_set_toolbar_lines (f, data->frame_toolbar_lines, make_number (0));
#endif
if (! NILP (XWINDOW (selected_window)->buffer))
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;
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));
+ if (previous_frame_toolbar_lines != FRAME_TOOLBAR_LINES (f))
+ x_set_toolbar_lines (f, make_number (previous_frame_toolbar_lines),
+ make_number (0));
#endif
+ /* Now, free glyph matrices in windows that were not reused. */
+ for (i = 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);
+ }
+
+ adjust_glyphs (f);
+
UNBLOCK_INPUT;
/* Fselect_window will have made f the selected frame, so we
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;
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));
+ XSETFASTINT (data->frame_toolbar_lines, FRAME_TOOLBAR_LINES (f));
XSETFRAME (data->selected_frame, selected_frame);
data->current_window = FRAME_SELECTED_WINDOW (f);
XSETBUFFER (data->current_buffer, current_buffer);
val = Fprogn (args);
return unbind_to (count, val);
}
+
+\f
+/***********************************************************************
+ Marginal Areas
+ ***********************************************************************/
+
+DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins,
+ 2, 3, "",
+ "Set width of marginal areas of window WINDOW.\n\
+If window is nil or omitted, 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.")
+ (left, right, window)
+ Lisp_Object window, left, right;
+{
+ struct window *w = decode_window (window);
+ struct frame *f = XFRAME (w->frame);
+
+ if (!NILP (left))
+ CHECK_NUMBER_OR_FLOAT (left, 0);
+ if (!NILP (right))
+ CHECK_NUMBER_OR_FLOAT (right, 0);
+
+ /* 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 (left)->data <= 0))
+ XSETFASTINT (left, 0);
+ if (INTEGERP (left) && XFASTINT (left) == 0)
+ left = Qnil;
+
+ if ((INTEGERP (right) && XINT (right) < 0)
+ || (FLOATP (right) && XFLOAT (right)->data <= 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;
+{
+ struct frame *f;
+ struct window *w;
+
+ if (NILP (window))
+ window = selected_window;
+ w = XWINDOW (window);
+ f = XFRAME (w->frame);
+
+ if (FRAME_WINDOW_P (f))
+ return CANON_Y_FROM_PIXEL_Y (f, w->vscroll);
+ else
+ return make_number (0);
+}
+
+
+DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll,
+ 1, 2, 0,
+ "Set amount by WINDOW should be scrolled vertically to VSCROLL.\n\
+WINDOW nil or omitted means use the selected window. VSCROLL is a\n\
+multiple of the canonical character height of WINDOW.")
+ (vscroll, window)
+ Lisp_Object vscroll, window;
+{
+ struct window *w;
+ struct frame *f;
+
+ CHECK_NUMBER_OR_FLOAT (vscroll, 0);
+
+ if (NILP (window))
+ window = selected_window;
+ w = XWINDOW (window);
+ f = XFRAME (w->frame);
+
+ if (FRAME_WINDOW_P (f))
+ {
+ int old_dy = w->vscroll;
+ w->vscroll = min (0, CANON_Y_UNIT (f) * XFLOATINT (vscroll));
+
+ /* 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)->clip_changed = 1;
+ }
+
+ return Qnil;
+}
+
+
+\f
+/***********************************************************************
+ Initialization
+ ***********************************************************************/
+
/* Return 1 if window configurations C1 and C2
describe the same state of affairs. This is used by Fequal. */
"*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 (&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);
}
projects / emacs.git / commitdiff