From: handa <handa>
Date: Mon, 12 Sep 2005 01:07:34 +0000 (+0000)
Subject: (redraw): Don't redraw an area where not text is
X-Git-Tag: REL-1-3-0~176
X-Git-Url: http://git.chise.org/gitweb/?a=commitdiff_plain;h=2b92bd4dbb082cab75e5c9e74efe50ec9f589983;p=m17n%2Fm17n-lib.git

(redraw): Don't redraw an area where not text is
displayed.
---

diff --git a/example/medit.c b/example/medit.c
index 9cff321..cf7aa7c 100644
--- a/example/medit.c
+++ b/example/medit.c
@@ -391,12 +391,17 @@ redraw (int y0, int y1, int clear, int scroll_bar)
   info.metrics.height = line->y1 - y;
   info.metrics.y = - line->ascent;
   info.line_to = line->to;
-  while (from < nchars && y + info.metrics.height <= y0)
+  while (y + info.metrics.height <= y0)
     {
       y += info.metrics.height;
       from = info.line_to;
+      if (from >= nchars)
+	break;
       GLYPH_INFO (from, from, info);
     }
+  if (y + info.metrics.height <= y0)
+    return;
+
   y0 = y - info.metrics.y;
   to = from;
   while (to < nchars && y < y1)