(x_compute_glyph_string_overhangs): Handle the automatic

composition case.

2 files changed, 23 insertions, 7 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 67bb245e71f..37f160a040b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-11  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
+
+        * xterm.c (x_compute_glyph_string_overhangs): Handle the automatic
+        composition case.
+
 2009-06-10  Chong Yidong  <cyd@stupidchicken.com>
 
         * xdisp.c (get_next_display_element): When handling wrap-prefix
diff --git a/src/xterm.c b/src/xterm.c
index ec6c4d4011f..4c516264902 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -1194,16 +1194,27 @@ x_compute_glyph_string_overhangs (s)
      struct glyph_string *s;
 {
   if (s->cmp == NULL
-      && s->first_glyph->type == CHAR_GLYPH)
+      && (s->first_glyph->type == CHAR_GLYPH
+          || s->first_glyph->type == COMPOSITE_GLYPH))
     {
-      unsigned *code = alloca (sizeof (unsigned) * s->nchars);
-      struct font *font = s->font;
       struct font_metrics metrics;
-      int i;
 
-      for (i = 0; i < s->nchars; i++)
-        code[i] = (s->char2b[i].byte1 << 8) | s->char2b[i].byte2;
-      font->driver->text_extents (font, code, s->nchars, &metrics);
+      if (s->first_glyph->type == CHAR_GLYPH)
+        {
+          unsigned *code = alloca (sizeof (unsigned) * s->nchars);
+          struct font *font = s->font;
+          int i;
+
+          for (i = 0; i < s->nchars; i++)
+            code[i] = (s->char2b[i].byte1 << 8) | s->char2b[i].byte2;
+          font->driver->text_extents (font, code, s->nchars, &metrics);
+        }
+      else
+        {
+          Lisp_Object gstring = composition_gstring_from_id (s->cmp_id);
+
+          composition_gstring_width (gstring, s->cmp_from, s->cmp_to, &metrics);
+        }
       s->right_overhang = (metrics.rbearing > metrics.width
                            ? metrics.rbearing - metrics.width : 0);
       s->left_overhang = metrics.lbearing < 0 ? - metrics.lbearing : 0;