(x_draw_composite_glyph_string_foreground): Draw rectangle

for nonexistent or zero-width glyph in composition glyph.

2 files changed, 16 insertions, 4 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 73a906bcc56..5ad9ac7d84e 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2007-08-27  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
+
+        * macterm.c (x_draw_composite_glyph_string_foreground): Draw rectangle
+        for nonexistent or zero-width glyph in composition glyph.
+
 2007-08-27  Richard Stallman  <rms@gnu.org>
 
         * eval.c (condition-case): Doc fix.
diff --git a/src/macterm.c b/src/macterm.c
index b282bac3aa6..01ac7328d6f 100644
--- a/src/macterm.c
+++ b/src/macterm.c
@@ -2973,10 +2973,17 @@ x_draw_composite_glyph_string_foreground (s)
   else
     {
       for (i = 0; i < s->nchars; i++, ++s->gidx)
-        mac_draw_image_string_16 (s->f, s->gc,
-                                  x + s->cmp->offsets[s->gidx * 2],
-                                  s->ybase - s->cmp->offsets[s->gidx * 2 + 1],
-                                  s->char2b + i, 1, 0, s->face->overstrike);
+        if (mac_per_char_metric (GC_FONT (s->gc), s->char2b + i, 0) == NULL)
+          /* This is a nonexistent or zero-width glyph such as a
+             combining diacritic.  Draw a rectangle.  */
+          mac_draw_rectangle (s->f, s->gc,
+                              x + s->cmp->offsets[s->gidx * 2], s->y,
+                              FONT_WIDTH (GC_FONT (s->gc)) - 1, s->height - 1);
+        else
+          mac_draw_image_string_16 (s->f, s->gc,
+                                    x + s->cmp->offsets[s->gidx * 2],
+                                    s->ybase - s->cmp->offsets[s->gidx * 2 + 1],
+                                    s->char2b + i, 1, 0, s->face->overstrike);
     }
 }