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bug 196312 : work around a problem with CJK bi-width fonts and fontconfig prior to 2.2. (r/sr=blizzard). Not a part of the default build(Xft)

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jshin%mailaps.org 2003-05-12 04:03:28 +00:00
parent 16a07f473a
commit 0045564aba
1 changed files with 13 additions and 0 deletions
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13
gfx/src/gtk/nsFontMetricsXft.cpp
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@ -1534,6 +1534,19 @@ nsFontXft::GetXftFont(void)
if (!pat)
return nsnull;
// bug 196312 : work around problem with CJK bi-width fonts
// and fontconfig prior to 2.2. CJK bi-width fonts are regarded
// as genuinely monospace by fontconfig that sets FC_SPACING
// to FC_MONOSPACE, which makes Xft drawing/measuring routines
// use the global advance width (the width of double width glyphs
// and twice the width of single width glyphs) even for single width
// characters (e.g. Latin letters and digits). This results in
// spaced-out ('s p a c e d - o u t') rendering. By deleting
// FC_SPACING here, we're emulating the behavior of fontconfig 2.2 or
// later that does not set FC_SPACING for any font.
if (FcGetVersion() < 20200)
FcPatternDel(pat, FC_SPACING);
mXftFont = XftFontOpenPattern(GDK_DISPLAY(), pat);
if (!mXftFont)
FcPatternDestroy(pat);