/* Fringe handling (split from xdisp.c).
- Copyright (C) 1985-1988, 1993-1995, 1997-2011 Free Software Foundation, Inc.
+ Copyright (C) 1985-1988, 1993-1995, 1997-2012 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <config.h>
#include <stdio.h>
-#include <setjmp.h>
#include "lisp.h"
#include "frame.h"
#include "window.h"
#include "dispextern.h"
+#include "character.h"
#include "buffer.h"
#include "blockinput.h"
#include "termhooks.h"
Logical bitmaps are used internally to denote things like
'end-of-buffer', 'left-truncation', 'overlay-arrow', etc.
- Physical bitmaps specify the visual appearence of the bitmap,
+ Physical bitmaps specify the visual appearance of the bitmap,
e.g. 'bottom-left-angle', 'left-arrow', 'left-triangle', etc.
User defined bitmaps are physical bitmaps.
static unsigned short question_mark_bits[] = {
0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18};
+/* An exclamation mark. */
+/*
+ ...XX...
+ ...XX...
+ ...XX...
+ ...XX...
+ ...XX...
+ ...XX...
+ ...XX...
+ ........
+ ...XX...
+ ...XX...
+*/
+static unsigned short exclamation_mark_bits[] = {
+ 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x18};
+
/* An arrow like this: `<-'. */
/*
...xx...
{
{ NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */
{ FRBITS (question_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
+ { FRBITS (exclamation_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 },
{ FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 },
{
/* If W has a vertical border to its left, don't draw over it. */
wd -= ((!WINDOW_LEFTMOST_P (w)
- && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w))
+ && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)
+ /* But don't reduce the fringe width if the window
+ has a left margin, because that means we are not
+ in danger of drawing over the vertical border,
+ and OTOH leaving out that one pixel leaves behind
+ traces of the cursor, if it was in column zero
+ before drawing non-empty margin area. */
+ && NILP (w->left_margin_cols))
? 1 : 0);
p.bx = x - wd;
p.nx = wd;
void
draw_row_fringe_bitmaps (struct window *w, struct glyph_row *row)
{
- xassert (interrupt_input_blocked);
+ eassert (input_blocked_p ());
/* If row is completely invisible, because of vscrolling, we
don't have to draw anything. */
int top_ind_rn, bot_ind_rn;
int top_ind_min_y, bot_ind_max_y;
- /* top_ind_rn is set to a nonnegative value whenver
+ /* top_ind_rn is set to a nonnegative value whenever
row->indicate_bob_p is set, so it's OK that top_row_ends_at_zv_p
is not initialized here. Similarly for bot_ind_rn,
row->indicate_eob_p and bot_row_ends_at_zv_p. */
error ("No free fringe bitmap slots");
i = max_fringe_bitmaps;
- fringe_bitmaps
- = ((struct fringe_bitmap **)
- xrealloc (fringe_bitmaps, bitmaps * sizeof *fringe_bitmaps));
- fringe_faces
- = (Lisp_Object *) xrealloc (fringe_faces,
- bitmaps * sizeof *fringe_faces);
+ fringe_bitmaps = xrealloc (fringe_bitmaps,
+ bitmaps * sizeof *fringe_bitmaps);
+ fringe_faces = xrealloc (fringe_faces,
+ bitmaps * sizeof *fringe_faces);
for (i = max_fringe_bitmaps; i < bitmaps; i++)
{
fb.dynamic = 1;
- xfb = (struct fringe_bitmap *) xmalloc (sizeof fb
- + fb.height * BYTES_PER_BITMAP_ROW);
+ xfb = xmalloc (sizeof fb + fb.height * BYTES_PER_BITMAP_ROW);
fb.bits = b = (unsigned short *) (xfb + 1);
memset (b, 0, fb.height);
(Lisp_Object bitmap, Lisp_Object face)
{
int n;
- int face_id;
CHECK_SYMBOL (bitmap);
n = lookup_fringe_bitmap (bitmap);
if (!n)
error ("Undefined fringe bitmap");
+ /* The purpose of the following code is to signal an error if FACE
+ is not a face. This is for the caller's convenience only; the
+ redisplay code should be able to fail gracefully. Skip the check
+ if FRINGE_FACE_ID is unrealized (as in batch mode and during
+ daemon startup). */
if (!NILP (face))
{
- face_id = lookup_derived_face (SELECTED_FRAME (), face,
- FRINGE_FACE_ID, 1);
- if (face_id < 0)
+ struct frame *f = SELECTED_FRAME ();
+
+ if (FACE_FROM_ID (f, FRINGE_FACE_ID)
+ && lookup_derived_face (f, face, FRINGE_FACE_ID, 1) < 0)
error ("No such face");
}
fringe_faces[n] = face;
-
return Qnil;
}
defsubr (&Sset_fringe_bitmap_face);
DEFVAR_LISP ("overflow-newline-into-fringe", Voverflow_newline_into_fringe,
- doc: /* *Non-nil means that newline may flow into the right fringe.
+ doc: /* Non-nil means that newline may flow into the right fringe.
This means that display lines which are exactly as wide as the window
(not counting the final newline) will only occupy one screen line, by
showing (or hiding) the final newline in the right fringe; when point
max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20;
- fringe_bitmaps
- = (struct fringe_bitmap **) xmalloc (max_fringe_bitmaps * sizeof (struct fringe_bitmap *));
- fringe_faces
- = (Lisp_Object *) xmalloc (max_fringe_bitmaps * sizeof (Lisp_Object));
+ fringe_bitmaps = xzalloc (max_fringe_bitmaps * sizeof *fringe_bitmaps);
+ fringe_faces = xmalloc (max_fringe_bitmaps * sizeof *fringe_faces);
for (i = 0; i < max_fringe_bitmaps; i++)
- {
- fringe_bitmaps[i] = NULL;
- fringe_faces[i] = Qnil;
- }
+ fringe_faces[i] = Qnil;
}
#ifdef HAVE_NTGUI
HCoop / bpt / emacs.git / blobdiff