FontDescription.cpp [plain text]
#include "config.h"
#include "FontDescription.h"
#include "LocaleToScriptMapping.h"
namespace WebCore {
struct SameSizeAsFontCascadeDescription {
Vector<void*> vector;
AtomicString string;
float size;
unsigned bitfields1;
unsigned bitfields2 : 22;
void* array;
float size2;
unsigned bitfields3 : 10;
};
COMPILE_ASSERT(sizeof(FontCascadeDescription) == sizeof(SameSizeAsFontCascadeDescription), FontCascadeDescription_should_stay_small);
FontDescription::FontDescription()
: m_orientation(Horizontal)
, m_nonCJKGlyphOrientation(static_cast<unsigned>(NonCJKGlyphOrientation::Mixed))
, m_widthVariant(RegularWidth)
, m_italic(FontItalicOff)
, m_weight(FontWeightNormal)
, m_renderingMode(static_cast<unsigned>(FontRenderingMode::Normal))
, m_textRendering(AutoTextRendering)
, m_script(USCRIPT_COMMON)
, m_fontSynthesis(FontSynthesisWeight | FontSynthesisStyle)
, m_variantCommonLigatures(static_cast<unsigned>(FontVariantLigatures::Normal))
, m_variantDiscretionaryLigatures(static_cast<unsigned>(FontVariantLigatures::Normal))
, m_variantHistoricalLigatures(static_cast<unsigned>(FontVariantLigatures::Normal))
, m_variantContextualAlternates(static_cast<unsigned>(FontVariantLigatures::Normal))
, m_variantPosition(static_cast<unsigned>(FontVariantPosition::Normal))
, m_variantCaps(static_cast<unsigned>(FontVariantCaps::Normal))
, m_variantNumericFigure(static_cast<unsigned>(FontVariantNumericFigure::Normal))
, m_variantNumericSpacing(static_cast<unsigned>(FontVariantNumericSpacing::Normal))
, m_variantNumericFraction(static_cast<unsigned>(FontVariantNumericFraction::Normal))
, m_variantNumericOrdinal(static_cast<unsigned>(FontVariantNumericOrdinal::Normal))
, m_variantNumericSlashedZero(static_cast<unsigned>(FontVariantNumericSlashedZero::Normal))
, m_variantAlternates(static_cast<unsigned>(FontVariantAlternates::Normal))
, m_variantEastAsianVariant(static_cast<unsigned>(FontVariantEastAsianVariant::Normal))
, m_variantEastAsianWidth(static_cast<unsigned>(FontVariantEastAsianWidth::Normal))
, m_variantEastAsianRuby(static_cast<unsigned>(FontVariantEastAsianRuby::Normal))
{
}
FontTraitsMask FontDescription::traitsMask() const
{
return static_cast<FontTraitsMask>((m_italic ? FontStyleItalicMask : FontStyleNormalMask)
| (FontWeight100Mask << (m_weight - FontWeight100)));
}
void FontDescription::setLocale(const AtomicString& locale)
{
m_locale = locale;
m_script = localeToScriptCodeForFontSelection(m_locale);
}
FontCascadeDescription::FontCascadeDescription()
: m_isAbsoluteSize(false)
, m_kerning(static_cast<unsigned>(Kerning::Auto))
, m_keywordSize(0)
, m_fontSmoothing(AutoSmoothing)
, m_isSpecifiedFont(false)
{
}
FontWeight FontCascadeDescription::lighterWeight(void) const
{
switch (weight()) {
case FontWeight100:
case FontWeight200:
case FontWeight300:
case FontWeight400:
case FontWeight500:
return FontWeight100;
case FontWeight600:
case FontWeight700:
return FontWeight400;
case FontWeight800:
case FontWeight900:
return FontWeight700;
}
ASSERT_NOT_REACHED();
return FontWeightNormal;
}
FontWeight FontCascadeDescription::bolderWeight(void) const
{
switch (weight()) {
case FontWeight100:
case FontWeight200:
case FontWeight300:
return FontWeight400;
case FontWeight400:
case FontWeight500:
return FontWeight700;
case FontWeight600:
case FontWeight700:
case FontWeight800:
case FontWeight900:
return FontWeight900;
}
ASSERT_NOT_REACHED();
return FontWeightNormal;
}
#if ENABLE(IOS_TEXT_AUTOSIZING)
bool FontCascadeDescription::familiesEqualForTextAutoSizing(const FontCascadeDescription& other) const
{
unsigned thisFamilyCount = familyCount();
unsigned otherFamilyCount = other.familyCount();
if (thisFamilyCount != otherFamilyCount)
return false;
for (unsigned i = 0; i < thisFamilyCount; ++i) {
if (!equalIgnoringASCIICase(familyAt(i), other.familyAt(i)))
return false;
}
return true;
}
#endif // ENABLE(IOS_TEXT_AUTOSIZING)
}