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Bug 1279785 - check for Xft lcdfilter resource when creating fontconfig fonts. r=karlt

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This commit is contained in:
Lee Salzman 2016-07-20 13:25:37 -04:00
parent cf08cc2a13
commit 84787f181a
1 changed files with 37 additions and 0 deletions
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37
gfx/thebes/gfxFcPlatformFontList.cpp
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@ -32,6 +32,10 @@
#include "gfxPlatformGtk.h"
#endif
#ifdef MOZ_X11
#include "mozilla/X11Util.h"
#endif
using namespace mozilla;
using namespace mozilla::unicode;
@ -717,6 +721,29 @@ gfxFontconfigFontEntry::CreateScaledFont(FcPattern* aRenderPattern,
static void ApplyGdkScreenFontOptions(FcPattern *aPattern);
#endif
#ifdef MOZ_X11
static bool
GetXftInt(Display* aDisplay, const char* aName, int* aResult)
{
if (!aDisplay) {
return false;
}
char* value = XGetDefault(aDisplay, "Xft", aName);
if (!value) {
return false;
}
if (FcNameConstant(ToFcChar8Ptr(value), aResult)) {
return true;
}
char* end;
*aResult = strtol(value, &end, 0);
if (end != value) {
return true;
}
return false;
}
#endif
static void
PreparePattern(FcPattern* aPattern, bool aIsPrinterFont)
{
@ -745,6 +772,16 @@ PreparePattern(FcPattern* aPattern, bool aIsPrinterFont)
#ifdef MOZ_WIDGET_GTK
ApplyGdkScreenFontOptions(aPattern);
#endif
#ifdef MOZ_X11
FcValue value;
int lcdfilter;
if (FcPatternGet(aPattern, FC_LCD_FILTER, 0, &value)
== FcResultNoMatch &&
GetXftInt(DefaultXDisplay(), "lcdfilter", &lcdfilter)) {
FcPatternAddInteger(aPattern, FC_LCD_FILTER, lcdfilter);
}
#endif
}
FcDefaultSubstitute(aPattern);