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iconcache: don't crash on a non-alpha mask pixmap

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We assume when applying a mask that it is a depth-1 pixmap that
cairo interprets as alpha. So ignore a non-depth-1 mask.

https://bugzilla.gnome.org/show_bug.cgi?id=641975
This commit is contained in:
Owen W. Taylor 2011-03-21 18:49:55 -04:00
parent 654d966e6c
commit 82db52aaf4
1 changed files with 5 additions and 4 deletions
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9
src/core/iconcache.c
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@ -434,10 +434,11 @@ try_pixmap_and_mask (MetaDisplay *display,
if (unscaled && src_mask != None)
{
get_pixmap_geometry (display, src_mask, &w, &h, NULL);
mask = meta_gdk_pixbuf_get_from_pixmap (src_mask,
0, 0,
w, h);
get_pixmap_geometry (display, src_mask, &w, &h, &d);
if (d == 1)
mask = meta_gdk_pixbuf_get_from_pixmap (src_mask,
0, 0,
w, h);
}
meta_error_trap_pop (display);