FontPlatformData::FontPlatformData(FcPattern* pattern, const FontDescription& fontDescription)
: m_pattern(pattern)
, m_fallbacks(0)
, m_size(fontDescription.computedPixelSize())
, m_syntheticBold(false)
, m_syntheticOblique(false)
, m_fixedWidth(false)
, m_scaledFont(0)
, m_orientation(fontDescription.orientation())
{
RefPtr<cairo_font_face_t> fontFace = adoptRef(cairo_ft_font_face_create_for_pattern(m_pattern.get()));
initializeWithFontFace(fontFace.get(), fontDescription);
int spacing;
if (FcPatternGetInteger(pattern, FC_SPACING, 0, &spacing) == FcResultMatch && spacing == FC_MONO)
m_fixedWidth = true;
if (fontDescription.weight() >= FontWeightBold) {
// The FC_EMBOLDEN property instructs us to fake the boldness of the font.
FcBool fontConfigEmbolden = FcFalse;
if (FcPatternGetBool(pattern, FC_EMBOLDEN, 0, &fontConfigEmbolden) == FcResultMatch)
m_syntheticBold = fontConfigEmbolden;
// Fallback fonts may not have FC_EMBOLDEN activated even though it's necessary.
int weight = 0;
if (!m_syntheticBold && FcPatternGetInteger(pattern, FC_WEIGHT, 0, &weight) == FcResultMatch)
m_syntheticBold = m_syntheticBold || weight < FC_WEIGHT_DEMIBOLD;
}
}
PassRefPtr<FontData> CSSSegmentedFontFace::getFontData(const FontDescription& fontDescription)
{
if (!isValid())
return 0;
FontTraitsMask desiredTraitsMask = fontDescription.traitsMask();
unsigned hashKey = ((fontDescription.computedPixelSize() + 1) << (FontTraitsMaskWidth + FontWidthVariantWidth + 1))
| ((fontDescription.orientation() == Vertical ? 1 : 0) << (FontTraitsMaskWidth + FontWidthVariantWidth))
| fontDescription.widthVariant() << FontTraitsMaskWidth
| desiredTraitsMask;
RefPtr<SegmentedFontData>& fontData = m_fontDataTable.add(hashKey, 0).iterator->value;
if (fontData && fontData->numRanges())
return fontData; // No release, we have a reference to an object in the cache which should retain the ref count it has.
if (!fontData)
fontData = SegmentedFontData::create();
unsigned size = m_fontFaces.size();
for (unsigned i = 0; i < size; i++) {
if (!m_fontFaces[i]->isValid())
continue;
FontTraitsMask traitsMask = m_fontFaces[i]->traitsMask();
bool syntheticBold = !(traitsMask & (FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask)) && (desiredTraitsMask & (FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask));
bool syntheticItalic = !(traitsMask & FontStyleItalicMask) && (desiredTraitsMask & FontStyleItalicMask);
if (RefPtr<SimpleFontData> faceFontData = m_fontFaces[i]->getFontData(fontDescription, syntheticBold, syntheticItalic)) {
ASSERT(!faceFontData->isSegmented());
appendFontDataWithInvalidUnicodeRangeIfLoading(fontData.get(), faceFontData.release(), m_fontFaces[i]->ranges());
}
}
if (fontData->numRanges())
return fontData; // No release, we have a reference to an object in the cache which should retain the ref count it has.
return 0;
}
PassRefPtr<SimpleFontData> BinaryDataFontFaceSource::createFontData(const FontDescription& fontDescription)
{
return SimpleFontData::create(
m_customPlatformData->fontPlatformData(fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(), fontDescription.isSyntheticItalic(),
fontDescription.orientation()), CustomFontData::create());
}
FontRanges CSSSegmentedFontFace::fontRanges(const FontDescription& fontDescription)
{
if (!isValid())
return FontRanges();
FontTraitsMask desiredTraitsMask = fontDescription.traitsMask();
unsigned hashKey = ((fontDescription.computedPixelSize() + 1) << (FontTraitsMaskWidth + FontWidthVariantWidth + 1))
| ((fontDescription.orientation() == Vertical ? 1 : 0) << (FontTraitsMaskWidth + FontWidthVariantWidth))
| fontDescription.widthVariant() << FontTraitsMaskWidth
| desiredTraitsMask;
auto addResult = m_descriptionToRangesMap.add(hashKey, FontRanges());
auto& fontRanges = addResult.iterator->value;
if (addResult.isNewEntry) {
for (auto& face : m_fontFaces) {
if (!face->isValid())
continue;
FontTraitsMask traitsMask = face->traitsMask();
bool syntheticBold = !(traitsMask & (FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask)) && (desiredTraitsMask & (FontWeight600Mask | FontWeight700Mask | FontWeight800Mask | FontWeight900Mask));
bool syntheticItalic = !(traitsMask & FontStyleItalicMask) && (desiredTraitsMask & FontStyleItalicMask);
if (RefPtr<Font> faceFont = face->font(fontDescription, syntheticBold, syntheticItalic))
appendFontWithInvalidUnicodeRangeIfLoading(fontRanges, faceFont.releaseNonNull(), face->ranges());
}
}
return fontRanges;
}
FontPlatformData FontCustomPlatformData::fontPlatformData(const FontDescription& fontDescription, bool bold, bool italic, const FontFeatureSettings& fontFaceFeatures, const FontVariantSettings& fontFaceVariantSettings)
{
int size = fontDescription.computedPixelSize();
FontOrientation orientation = fontDescription.orientation();
FontWidthVariant widthVariant = fontDescription.widthVariant();
RetainPtr<CTFontRef> font = adoptCF(CTFontCreateWithFontDescriptor(m_fontDescriptor.get(), size, nullptr));
font = preparePlatformFont(font.get(), fontDescription.textRenderingMode(), &fontFaceFeatures, &fontFaceVariantSettings, fontDescription.featureSettings(), fontDescription.variantSettings());
return FontPlatformData(font.get(), size, bold, italic, orientation, widthVariant, fontDescription.textRenderingMode());
}
PassRefPtr<SimpleFontData> SimpleFontData::platformCreateScaledFontData(const FontDescription& fontDescription, float scaleFactor) const
{
ASSERT(m_platformData.scaledFont());
return SimpleFontData::create(FontPlatformData(cairo_scaled_font_get_font_face(m_platformData.scaledFont()),
scaleFactor * fontDescription.computedSize(),
m_platformData.syntheticBold(),
m_platformData.syntheticOblique(),
fontDescription.orientation()),
isCustomFont(), false);
}
FontPlatformData FontCustomPlatformData::fontPlatformData(const FontDescription& fontDescription, bool bold, bool italic)
{
int size = fontDescription.computedPixelSize();
FontOrientation orientation = fontDescription.orientation();
FontWidthVariant widthVariant = fontDescription.widthVariant();
#if CORETEXT_WEB_FONTS
RetainPtr<CTFontRef> font = adoptCF(CTFontCreateWithFontDescriptor(m_fontDescriptor.get(), size, nullptr));
font = preparePlatformFont(font.get(), fontDescription.textRenderingMode(), fontDescription.featureSettings());
return FontPlatformData(font.get(), size, bold, italic, orientation, widthVariant, fontDescription.textRenderingMode());
#else
return FontPlatformData(m_cgFont.get(), size, bold, italic, orientation, widthVariant, fontDescription.textRenderingMode());
#endif
}
PassRefPtr<SimpleFontData> RemoteFontFaceSource::createFontData(const FontDescription& fontDescription)
{
if (!isLoaded())
return createLoadingFallbackFontData(fontDescription);
if (!m_font->ensureCustomFontData() || m_period == FailurePeriod)
return nullptr;
m_histograms.recordFallbackTime(m_font.get());
return SimpleFontData::create(
m_font->platformDataFromCustomData(fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(), fontDescription.isSyntheticItalic(),
fontDescription.orientation()), CustomFontData::create());
}
PassRefPtr<SimpleFontData> RemoteFontFaceSource::createFontData(const FontDescription& fontDescription)
{
if (!isLoaded())
return createLoadingFallbackFontData(fontDescription);
// Create new FontPlatformData from our CGFontRef, point size and ATSFontRef.
if (!m_font->ensureCustomFontData())
return nullptr;
m_histograms.recordFallbackTime(m_font.get());
return SimpleFontData::create(
m_font->platformDataFromCustomData(fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(), fontDescription.isSyntheticItalic(),
fontDescription.orientation(), fontDescription.widthVariant()), CustomFontData::create());
}
RefPtr<Font> CSSFontFaceSource::font(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic, CSSFontSelector* fontSelector, const FontFeatureSettings& fontFaceFeatures, const FontVariantSettings& fontFaceVariantSettings)
{
// If the font hasn't loaded or an error occurred, then we've got nothing.
if (!isValid())
return nullptr;
if (!m_font
#if ENABLE(SVG_FONTS)
&& !m_svgFontFaceElement
#endif
) {
// We're local. Just return a Font from the normal cache.
// We don't want to check alternate font family names here, so pass true as the checkingAlternateName parameter.
return FontCache::singleton().fontForFamily(fontDescription, m_string, true);
}
unsigned hashKey = (fontDescription.computedPixelSize() + 1) << 5 | fontDescription.widthVariant() << 3
| (fontDescription.orientation() == Vertical ? 4 : 0) | (syntheticBold ? 2 : 0) | (syntheticItalic ? 1 : 0);
RefPtr<Font> font = m_fontTable.add(hashKey, nullptr).iterator->value;
if (font)
return font.release();
if (isLoaded()) {
if (m_font) {
bool hasExternalSVGFont = false;
#if ENABLE(SVG_FONTS)
hasExternalSVGFont = m_hasExternalSVGFont;
#endif
if (!m_font->ensureCustomFontData(hasExternalSVGFont, m_string))
return nullptr;
font = m_font->createFont(fontDescription, m_string, syntheticBold, syntheticItalic, hasExternalSVGFont, fontFaceFeatures, fontFaceVariantSettings);
} else {
#if ENABLE(SVG_FONTS)
// In-Document SVG Fonts
if (m_svgFontFaceElement) {
#if ENABLE(SVG_OTF_CONVERTER)
if (!m_svgFontFaceElement->parentNode() || !is<SVGFontElement>(m_svgFontFaceElement->parentNode()))
return nullptr;
SVGFontElement& fontElement = downcast<SVGFontElement>(*m_svgFontFaceElement->parentNode());
// FIXME: Re-run this when script modifies the element or any of its descendents
// FIXME: We might have already converted this font. Make existing conversions discoverable.
Vector<char> otfFont = convertSVGToOTFFont(fontElement);
m_generatedOTFBuffer = SharedBuffer::adoptVector(otfFont);
if (!m_generatedOTFBuffer)
return nullptr;
auto customPlatformData = createFontCustomPlatformData(*m_generatedOTFBuffer);
if (!customPlatformData)
return nullptr;
font = Font::create(customPlatformData->fontPlatformData(fontDescription, syntheticBold, syntheticItalic, fontFaceFeatures, fontFaceVariantSettings), true, false);
#else
font = Font::create(std::make_unique<SVGFontData>(m_svgFontFaceElement.get()), fontDescription.computedPixelSize(), syntheticBold, syntheticItalic);
#endif
}
#endif
}
} else {
// Kick off the load. Do it soon rather than now, because we may be in the middle of layout,
// and the loader may invoke arbitrary delegate or event handler code.
fontSelector->beginLoadingFontSoon(m_font.get());
Ref<Font> placeholderFont = FontCache::singleton().lastResortFallbackFont(fontDescription);
Ref<Font> placeholderFontCopyInLoadingState = Font::create(placeholderFont->platformData(), true, true);
return WTFMove(placeholderFontCopyInLoadingState);
}
return font.release();
}
PassRefPtr<SimpleFontData> CSSFontFaceSource::getFontData(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic, CSSFontSelector* fontSelector)
{
// If the font hasn't loaded or an error occurred, then we've got nothing.
if (!isValid())
return 0;
if (!m_font
#if ENABLE(SVG_FONTS)
&& !m_svgFontFaceElement
#endif
) {
// We're local. Just return a SimpleFontData from the normal cache.
// We don't want to check alternate font family names here, so pass true as the checkingAlternateName parameter.
return fontCache()->getCachedFontData(fontDescription, m_string, true);
}
// See if we have a mapping in our FontData cache.
unsigned hashKey = (fontDescription.computedPixelSize() + 1) << 5 | fontDescription.widthVariant() << 3
| (fontDescription.orientation() == Vertical ? 4 : 0) | (syntheticBold ? 2 : 0) | (syntheticItalic ? 1 : 0);
RefPtr<SimpleFontData>& fontData = m_fontDataTable.add(hashKey, 0).iterator->value;
if (fontData)
return fontData; // No release, because fontData is a reference to a RefPtr that is held in the m_fontDataTable.
// If we are still loading, then we let the system pick a font.
if (isLoaded()) {
if (m_font) {
#if ENABLE(SVG_FONTS)
if (m_hasExternalSVGFont) {
// For SVG fonts parse the external SVG document, and extract the <font> element.
if (!m_font->ensureSVGFontData())
return 0;
if (!m_externalSVGFontElement) {
String fragmentIdentifier;
size_t start = m_string.find('#');
if (start != notFound)
fragmentIdentifier = m_string.string().substring(start + 1);
m_externalSVGFontElement = m_font->getSVGFontById(fragmentIdentifier);
}
if (!m_externalSVGFontElement)
return 0;
if (auto fontFaceElement = Traversal<SVGFontFaceElement>::firstChild(m_externalSVGFontElement.get())) {
if (!m_svgFontFaceElement) {
// We're created using a CSS @font-face rule, that means we're not associated with a SVGFontFaceElement.
// Use the imported <font-face> tag as referencing font-face element for these cases.
m_svgFontFaceElement = fontFaceElement;
}
fontData = SimpleFontData::create(SVGFontData::create(fontFaceElement), fontDescription.computedPixelSize(), syntheticBold, syntheticItalic);
}
} else
#endif
{
// Create new FontPlatformData from our CGFontRef, point size and ATSFontRef.
if (!m_font->ensureCustomFontData())
return 0;
fontData = SimpleFontData::create(m_font->platformDataFromCustomData(fontDescription.computedPixelSize(), syntheticBold, syntheticItalic,
fontDescription.orientation(), fontDescription.widthVariant(), fontDescription.renderingMode()), true, false);
}
} else {
#if ENABLE(SVG_FONTS)
// In-Document SVG Fonts
if (m_svgFontFaceElement)
fontData = SimpleFontData::create(SVGFontData::create(m_svgFontFaceElement.get()), fontDescription.computedPixelSize(), syntheticBold, syntheticItalic);
#endif
}
} else {
// Kick off the load. Do it soon rather than now, because we may be in the middle of layout,
// and the loader may invoke arbitrary delegate or event handler code.
fontSelector->beginLoadingFontSoon(m_font.get());
// This temporary font is not retained and should not be returned.
FontCachePurgePreventer fontCachePurgePreventer;
SimpleFontData* temporaryFont = fontCache()->getNonRetainedLastResortFallbackFont(fontDescription);
fontData = SimpleFontData::create(temporaryFont->platformData(), true, true);
}
return fontData; // No release, because fontData is a reference to a RefPtr that is held in the m_fontDataTable.
}
PassRefPtr<SimpleFontData> CSSFontFaceSource::getFontData(const FontDescription& fontDescription)
{
// If the font hasn't loaded or an error occurred, then we've got nothing.
if (!isValid())
return 0;
if (isLocal()) {
// We're local. Just return a SimpleFontData from the normal cache.
// We don't want to check alternate font family names here, so pass true as the checkingAlternateName parameter.
RefPtr<SimpleFontData> fontData = FontCache::fontCache()->getFontData(fontDescription, m_string, true);
m_histograms.recordLocalFont(fontData);
return fontData;
}
// See if we have a mapping in our FontData cache.
AtomicString emptyFontFamily = "";
FontCacheKey key = fontDescription.cacheKey(emptyFontFamily);
RefPtr<SimpleFontData>& fontData = m_fontDataTable.add(key.hash(), 0).iterator->value;
if (fontData)
return fontData; // No release, because fontData is a reference to a RefPtr that is held in the m_fontDataTable.
// If we are still loading, then we let the system pick a font.
if (isLoaded()) {
if (m_font) {
#if ENABLE(SVG_FONTS)
if (m_hasExternalSVGFont) {
// For SVG fonts parse the external SVG document, and extract the <font> element.
if (!m_font->ensureSVGFontData())
return 0;
if (!m_externalSVGFontElement) {
String fragmentIdentifier;
size_t start = m_string.find('#');
if (start != kNotFound)
fragmentIdentifier = m_string.string().substring(start + 1);
m_externalSVGFontElement = m_font->getSVGFontById(fragmentIdentifier);
}
if (!m_externalSVGFontElement)
return 0;
SVGFontFaceElement* fontFaceElement = 0;
// Select first <font-face> child
for (Node* fontChild = m_externalSVGFontElement->firstChild(); fontChild; fontChild = fontChild->nextSibling()) {
if (fontChild->hasTagName(SVGNames::font_faceTag)) {
fontFaceElement = toSVGFontFaceElement(fontChild);
break;
}
}
if (fontFaceElement) {
if (!m_svgFontFaceElement) {
// We're created using a CSS @font-face rule, that means we're not associated with a SVGFontFaceElement.
// Use the imported <font-face> tag as referencing font-face element for these cases.
m_svgFontFaceElement = fontFaceElement;
}
fontData = SimpleFontData::create(
SVGFontData::create(fontFaceElement),
fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(),
fontDescription.isSyntheticItalic());
}
} else
#endif
{
// Create new FontPlatformData from our CGFontRef, point size and ATSFontRef.
if (!m_font->ensureCustomFontData())
return 0;
fontData = SimpleFontData::create(
m_font->platformDataFromCustomData(fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(), fontDescription.isSyntheticItalic(),
fontDescription.orientation(), fontDescription.widthVariant()), CustomFontData::create(false));
}
} else {
#if ENABLE(SVG_FONTS)
// In-Document SVG Fonts
if (m_svgFontFaceElement) {
fontData = SimpleFontData::create(
SVGFontData::create(m_svgFontFaceElement.get()),
fontDescription.effectiveFontSize(),
fontDescription.isSyntheticBold(),
fontDescription.isSyntheticItalic());
}
#endif
}
} else {
// This temporary font is not retained and should not be returned.
FontCachePurgePreventer fontCachePurgePreventer;
SimpleFontData* temporaryFont = FontCache::fontCache()->getNonRetainedLastResortFallbackFont(fontDescription);
if (!temporaryFont) {
ASSERT_NOT_REACHED();
return 0;
}
RefPtr<CSSCustomFontData> cssFontData = CSSCustomFontData::create(true);
cssFontData->setCSSFontFaceSource(this);
fontData = SimpleFontData::create(temporaryFont->platformData(), cssFontData);
}
return fontData; // No release, because fontData is a reference to a RefPtr that is held in the m_fontDataTable.
}
std::unique_ptr<FontPlatformData> FontCache::createFontPlatformData(
const FontDescription& fontDescription,
const FontFaceCreationParams& creationParams,
float fontSize) {
ASSERT(creationParams.creationType() == CreateFontByFamily);
CString name;
sk_sp<SkTypeface> tf = createTypeface(fontDescription, creationParams, name);
// Windows will always give us a valid pointer here, even if the face name
// is non-existent. We have to double-check and see if the family name was
// really used.
if (!tf || !typefacesMatchesFamily(tf.get(), creationParams.family())) {
AtomicString adjustedName;
FontWeight variantWeight;
FontStretch variantStretch;
if (typefacesHasWeightSuffix(creationParams.family(), adjustedName,
variantWeight)) {
FontFaceCreationParams adjustedParams(adjustedName);
FontDescription adjustedFontDescription = fontDescription;
adjustedFontDescription.setWeight(variantWeight);
tf = createTypeface(adjustedFontDescription, adjustedParams, name);
if (!tf || !typefacesMatchesFamily(tf.get(), adjustedName))
return nullptr;
} else if (typefacesHasStretchSuffix(creationParams.family(), adjustedName,
variantStretch)) {
FontFaceCreationParams adjustedParams(adjustedName);
FontDescription adjustedFontDescription = fontDescription;
adjustedFontDescription.setStretch(variantStretch);
tf = createTypeface(adjustedFontDescription, adjustedParams, name);
if (!tf || !typefacesMatchesFamily(tf.get(), adjustedName))
return nullptr;
} else {
return nullptr;
}
}
std::unique_ptr<FontPlatformData> result =
WTF::wrapUnique(new FontPlatformData(
tf, name.data(), fontSize,
(fontDescription.weight() >= FontWeight600 && !tf->isBold()) ||
fontDescription.isSyntheticBold(),
((fontDescription.style() == FontStyleItalic ||
fontDescription.style() == FontStyleOblique) &&
!tf->isItalic()) ||
fontDescription.isSyntheticItalic(),
fontDescription.orientation()));
struct FamilyMinSize {
const wchar_t* family;
unsigned minSize;
};
const static FamilyMinSize minAntiAliasSizeForFont[] = {
{L"simsun", 11},
{L"dotum", 12},
{L"gulim", 12},
{L"pmingliu", 11},
{L"pmingliu-extb", 11}};
size_t numFonts = WTF_ARRAY_LENGTH(minAntiAliasSizeForFont);
for (size_t i = 0; i < numFonts; i++) {
FamilyMinSize entry = minAntiAliasSizeForFont[i];
if (typefacesMatchesFamily(tf.get(), entry.family)) {
result->setMinSizeForAntiAlias(entry.minSize);
break;
}
}
// List of fonts that look bad with subpixel text rendering at smaller font
// sizes. This includes all fonts in the Microsoft Core fonts for the Web
// collection.
const static wchar_t* noSubpixelForSmallSizeFont[] = {
L"andale mono", L"arial", L"comic sans", L"courier new",
L"dotum", L"georgia", L"impact", L"lucida console",
L"tahoma", L"times new roman", L"trebuchet ms", L"verdana",
L"webdings"};
const static float minSizeForSubpixelForFont = 16.0f;
numFonts = WTF_ARRAY_LENGTH(noSubpixelForSmallSizeFont);
for (size_t i = 0; i < numFonts; i++) {
const wchar_t* family = noSubpixelForSmallSizeFont[i];
if (typefacesMatchesFamily(tf.get(), family)) {
result->setMinSizeForSubpixel(minSizeForSubpixelForFont);
break;
}
}
return result;
}
FontPlatformData::FontPlatformData(const FontDescription& in_desc, const AtomicString& in_family)
: m_orientation(in_desc.orientation())
, m_size(in_desc.computedSize())
{
m_font = _createWKCFont(in_desc, in_family.string().utf8().data());
}
