FallbackListCompositeKey FontFallbackList::compositeKey(const FontDescription& fontDescription) const
{
FallbackListCompositeKey key(fontDescription);
const FontFamily* currentFamily = &fontDescription.family();
while (currentFamily) {
if (currentFamily->family().length()) {
FontFaceCreationParams params(adjustFamilyNameToAvoidUnsupportedFonts(currentFamily->family()));
RefPtr<FontData> result;
if (m_fontSelector)
result = m_fontSelector->getFontData(fontDescription, currentFamily->family());
if (!result) {
if (FontPlatformData* platformData = FontCache::fontCache()->getFontPlatformData(fontDescription, params))
result = FontCache::fontCache()->fontDataFromFontPlatformData(platformData);
}
// Include loading state and version when constructing key, that way if called when a font is loading
// and then again once it has been loaded or updated different keys are produced.
if (result) {
FontCacheKey cacheKey = fontDescription.cacheKey(params, FontTraits(0),
result->isLoading() || result->isLoadingFallback(),
m_fontSelector ? m_fontSelector->version() : 0);
key.add(cacheKey);
}
}
currentFamily = currentFamily->next();
}
return key;
}
static inline void assertDescriptionMatchesMask(FontDescription& source, FontTraitsBitfield bitfield)
{
FontDescription target;
target.setTraits(FontTraits(bitfield));
EXPECT_EQ(source.style(), target.style());
EXPECT_EQ(source.variant(), target.variant());
EXPECT_EQ(source.weight(), target.weight());
EXPECT_EQ(source.stretch(), target.stretch());
}
FontTraits FontDescription::traits() const
{
return FontTraits(style(), variant(), weight(), stretch());
}
FontTraits FontFace::traits() const
{
FontStretch stretch = FontStretchNormal;
if (m_stretch) {
if (!m_stretch->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_stretch.get())->getValueID()) {
case CSSValueUltraCondensed:
stretch = FontStretchUltraCondensed;
break;
case CSSValueExtraCondensed:
stretch = FontStretchExtraCondensed;
break;
case CSSValueCondensed:
stretch = FontStretchCondensed;
break;
case CSSValueSemiCondensed:
stretch = FontStretchSemiCondensed;
break;
case CSSValueSemiExpanded:
stretch = FontStretchSemiExpanded;
break;
case CSSValueExpanded:
stretch = FontStretchExpanded;
break;
case CSSValueExtraExpanded:
stretch = FontStretchExtraExpanded;
break;
case CSSValueUltraExpanded:
stretch = FontStretchUltraExpanded;
break;
default:
break;
}
}
FontStyle style = FontStyleNormal;
if (m_style) {
if (!m_style->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_style.get())->getValueID()) {
case CSSValueNormal:
style = FontStyleNormal;
break;
case CSSValueOblique:
style = FontStyleOblique;
break;
case CSSValueItalic:
style = FontStyleItalic;
break;
default:
break;
}
}
FontWeight weight = FontWeight400;
if (m_weight) {
if (!m_weight->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_weight.get())->getValueID()) {
case CSSValueBold:
case CSSValue700:
weight = FontWeight700;
break;
case CSSValueNormal:
case CSSValue400:
weight = FontWeight400;
break;
case CSSValue900:
weight = FontWeight900;
break;
case CSSValue800:
weight = FontWeight800;
break;
case CSSValue600:
weight = FontWeight600;
break;
case CSSValue500:
weight = FontWeight500;
break;
case CSSValue300:
weight = FontWeight300;
break;
case CSSValue200:
weight = FontWeight200;
break;
case CSSValue100:
weight = FontWeight100;
break;
// Although 'lighter' and 'bolder' are valid keywords for font-weights, they are invalid
// inside font-face rules so they are ignored. Reference: http://www.w3.org/TR/css3-fonts/#descdef-font-weight.
case CSSValueLighter:
case CSSValueBolder:
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
FontVariant variant = FontVariantNormal;
if (RefPtrWillBeRawPtr<CSSValue> fontVariant = m_variant) {
// font-variant descriptor can be a value list.
if (fontVariant->isPrimitiveValue()) {
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
list->append(fontVariant);
fontVariant = list;
} else if (!fontVariant->isValueList()) {
return 0;
}
CSSValueList* variantList = toCSSValueList(fontVariant.get());
unsigned numVariants = variantList->length();
if (!numVariants)
return 0;
for (unsigned i = 0; i < numVariants; ++i) {
switch (toCSSPrimitiveValue(variantList->item(i))->getValueID()) {
case CSSValueNormal:
variant = FontVariantNormal;
break;
case CSSValueSmallCaps:
variant = FontVariantSmallCaps;
break;
default:
break;
}
}
}
return FontTraits(style, variant, weight, stretch);
}
FontTraits FontFace::traits() const
{
FontStyle style = FontStyleNormal;
if (m_style) {
if (!m_style->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_style.get())->getValueID()) {
case CSSValueNormal:
style = FontStyleNormal;
break;
case CSSValueItalic:
case CSSValueOblique:
style = FontStyleItalic;
break;
default:
break;
}
}
FontWeight weight = FontWeight400;
if (m_weight) {
if (!m_weight->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_weight.get())->getValueID()) {
case CSSValueBold:
case CSSValue700:
weight = FontWeight700;
break;
case CSSValueNormal:
case CSSValue400:
weight = FontWeight400;
break;
case CSSValue900:
weight = FontWeight900;
break;
case CSSValue800:
weight = FontWeight800;
break;
case CSSValue600:
weight = FontWeight600;
break;
case CSSValue500:
weight = FontWeight500;
break;
case CSSValue300:
weight = FontWeight300;
break;
case CSSValue200:
weight = FontWeight200;
break;
case CSSValueLighter:
case CSSValue100:
weight = FontWeight100;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
FontVariant variant = FontVariantNormal;
if (RefPtrWillBeRawPtr<CSSValue> fontVariant = m_variant) {
// font-variant descriptor can be a value list.
if (fontVariant->isPrimitiveValue()) {
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
list->append(fontVariant);
fontVariant = list;
} else if (!fontVariant->isValueList()) {
return 0;
}
CSSValueList* variantList = toCSSValueList(fontVariant.get());
unsigned numVariants = variantList->length();
if (!numVariants)
return 0;
for (unsigned i = 0; i < numVariants; ++i) {
switch (toCSSPrimitiveValue(variantList->itemWithoutBoundsCheck(i))->getValueID()) {
case CSSValueNormal:
variant = FontVariantNormal;
break;
case CSSValueSmallCaps:
variant = FontVariantSmallCaps;
break;
default:
break;
}
}
}
return FontTraits(style, variant, weight, FontStretchNormal);
}
FontTraits FontFace::traits() const
{
FontStretch stretch = FontStretchNormal;
if (m_stretch) {
if (!m_stretch->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_stretch.get())->getValueID()) {
case CSSValueUltraCondensed:
stretch = FontStretchUltraCondensed;
break;
case CSSValueExtraCondensed:
stretch = FontStretchExtraCondensed;
break;
case CSSValueCondensed:
stretch = FontStretchCondensed;
break;
case CSSValueSemiCondensed:
stretch = FontStretchSemiCondensed;
break;
case CSSValueSemiExpanded:
stretch = FontStretchSemiExpanded;
break;
case CSSValueExpanded:
stretch = FontStretchExpanded;
break;
case CSSValueExtraExpanded:
stretch = FontStretchExtraExpanded;
break;
case CSSValueUltraExpanded:
stretch = FontStretchUltraExpanded;
break;
default:
break;
}
}
FontStyle style = FontStyleNormal;
if (m_style) {
if (!m_style->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_style.get())->getValueID()) {
case CSSValueNormal:
style = FontStyleNormal;
break;
case CSSValueOblique:
style = FontStyleOblique;
break;
case CSSValueItalic:
style = FontStyleItalic;
break;
default:
break;
}
}
FontWeight weight = FontWeight400;
if (m_weight) {
if (!m_weight->isPrimitiveValue())
return 0;
switch (toCSSPrimitiveValue(m_weight.get())->getValueID()) {
case CSSValueBold:
case CSSValue700:
weight = FontWeight700;
break;
case CSSValueNormal:
case CSSValue400:
weight = FontWeight400;
break;
case CSSValue900:
weight = FontWeight900;
break;
case CSSValue800:
weight = FontWeight800;
break;
case CSSValue600:
weight = FontWeight600;
break;
case CSSValue500:
weight = FontWeight500;
break;
case CSSValue300:
weight = FontWeight300;
break;
case CSSValue200:
weight = FontWeight200;
break;
case CSSValue100:
weight = FontWeight100;
break;
// Although 'lighter' and 'bolder' are valid keywords for font-weights, they are invalid
// inside font-face rules so they are ignored. Reference: http://www.w3.org/TR/css3-fonts/#descdef-font-weight.
case CSSValueLighter:
case CSSValueBolder:
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
return FontTraits(style, weight, stretch);
}
