void SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) {
SkFontDescriptor descriptor;
{
SkAutoMutexAcquire ac(gFamilyHeadAndNameListMutex);
descriptor.setFamilyName(find_family_name(face));
descriptor.setStyle(face->style());
descriptor.setFontFileName(((FamilyTypeface*)face)->getUniqueString());
}
descriptor.serialize(stream);
const bool isCustomFont = !((FamilyTypeface*)face)->isSysFont();
if (isCustomFont) {
// store the entire font in the fontData
SkStream* fontStream = ((FamilyTypeface*)face)->openStream();
const uint32_t length = fontStream->getLength();
stream->writePackedUInt(length);
stream->writeStream(fontStream, length);
fontStream->unref();
} else {
stream->writePackedUInt(0);
}
}
void SkTypeface::serialize(SkWStream* wstream) const {
if (gSerializeTypefaceDelegate) {
(*gSerializeTypefaceDelegate)(this, wstream);
return;
}
bool isLocal = false;
SkFontDescriptor desc;
this->onGetFontDescriptor(&desc, &isLocal);
// Embed font data if it's a local font.
if (isLocal && !desc.hasFontData()) {
desc.setFontData(this->onMakeFontData());
}
desc.serialize(wstream);
}
sk_sp<SkTypeface> WhitelistDeserializeTypeface(SkStream* stream) {
SkFontDescriptor desc;
if (!SkFontDescriptor::Deserialize(stream, &desc)) {
return nullptr;
}
SkFontData* data = desc.detachFontData();
if (data) {
sk_sp<SkTypeface> typeface(SkTypeface::MakeFromFontData(data));
if (typeface) {
return typeface;
}
}
const char* familyName = desc.getFamilyName();
if (!strncmp(SUBNAME_PREFIX, familyName, sizeof(SUBNAME_PREFIX) - 1)) {
familyName += sizeof(SUBNAME_PREFIX) - 1;
}
return SkTypeface::MakeFromName(familyName, desc.getStyle());
}
sk_sp<SkTypeface> SkTypeface::MakeDeserialize(SkStream* stream) {
if (gDeserializeTypefaceDelegate) {
return (*gDeserializeTypefaceDelegate)(stream);
}
SkFontDescriptor desc;
if (!SkFontDescriptor::Deserialize(stream, &desc)) {
return nullptr;
}
SkFontData* data = desc.detachFontData();
if (data) {
sk_sp<SkTypeface> typeface(SkTypeface::MakeFromFontData(data));
if (typeface) {
return typeface;
}
}
return SkTypeface::MakeFromName(desc.getFamilyName(), desc.getStyle());
}
