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bug 837498 - work around DWrite/GDI 'cmap' discrepancy for Italic fonts with Hebrew system locale. r=smontagu

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This commit is contained in:
Jonathan Kew 2013-05-01 20:40:19 +01:00
parent babaca3896
commit f4861423b9
1 changed files with 6 additions and 4 deletions
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10
gfx/thebes/gfxDWriteFontList.cpp
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@ -245,7 +245,7 @@ gfxDWriteFontEntry::IsSymbolFont()
}
static bool
UsingArabicScriptSystemLocale()
UsingArabicOrHebrewScriptSystemLocale()
{
LANGID langid = PRIMARYLANGID(::GetSystemDefaultLangID());
switch (langid) {
@ -256,6 +256,7 @@ UsingArabicScriptSystemLocale()
case LANG_SINDHI:
case LANG_UIGHUR:
case LANG_URDU:
case LANG_HEBREW:
return true;
default:
return false;
@ -268,11 +269,12 @@ gfxDWriteFontEntry::GetFontTable(uint32_t aTableTag,
{
gfxDWriteFontList *pFontList = gfxDWriteFontList::PlatformFontList();
// don't use GDI table loading for symbol fonts or for
// Don't use GDI table loading for symbol fonts or for
// italic fonts in Arabic-script system locales because of
// potential cmap discrepancies, see bug 629386
// potential cmap discrepancies, see bug 629386.
// Ditto for Hebrew, bug 837498.
if (mFont && pFontList->UseGDIFontTableAccess() &&
!(mItalic && UsingArabicScriptSystemLocale()) &&
!(mItalic && UsingArabicOrHebrewScriptSystemLocale()) &&
!mFont->IsSymbolFont())
{
LOGFONTW logfont = { 0 };