PassRefPtr<SimpleFontData> FontCache::getLastResortFallbackFont(const FontDescription& description, ShouldRetain shouldRetain)
{
const AtomicString fallbackFontFamily = getFallbackFontFamily(description);
const FontPlatformData* fontPlatformData = getFontPlatformData(description, fallbackFontFamily);
// We should at least have Sans or Arial which is the last resort fallback of SkFontHost ports.
if (!fontPlatformData) {
DEFINE_STATIC_LOCAL(const AtomicString, sansStr, ("Sans", AtomicString::ConstructFromLiteral));
fontPlatformData = getFontPlatformData(description, sansStr);
}
PassRefPtr<SimpleFontData> FontCache::getLastResortFallbackFont(const FontDescription& description, ShouldRetain shouldRetain)
{
const AtomicString fallbackFontFamily = getFallbackFontFamily(description);
const FontPlatformData* fontPlatformData = 0;
if (!fallbackFontFamily.isEmpty())
fontPlatformData = getFontPlatformData(description, fallbackFontFamily);
if (!fontPlatformData) {
// we should at least have Arial; this is the SkFontHost_fontconfig last resort fallback
DEFINE_STATIC_LOCAL(const AtomicString, arialStr, ("Arial", AtomicString::ConstructFromLiteral));
fontPlatformData = getFontPlatformData(description, arialStr);
}
sk_sp<SkTypeface> FontCache::createTypeface(
const FontDescription& fontDescription,
const FontFaceCreationParams& creationParams,
CString& name) {
AtomicString family = creationParams.family();
if (family.isEmpty()) {
name = getFallbackFontFamily(fontDescription).string().utf8();
} else {
name = family.utf8();
}
fonts::FontRequest request;
request.family = name.data();
request.weight = ToIntegerWeight(fontDescription.weight());
request.width = static_cast<uint32_t>(fontDescription.stretch());
request.slant = ToFontSlant(fontDescription.style());
fonts::FontResponsePtr response;
auto& font_provider = GetFontProvider();
font_provider->GetFont(
std::move(request),
[&response](fonts::FontResponsePtr r) { response = std::move(r); });
font_provider.WaitForResponse();
FXL_DCHECK(response)
<< "Unable to contact the font provider. Did you run "
"Flutter in an environment that has a font manager?\n"
"See <https://fuchsia.googlesource.com/modular/+/master/README.md>.";
if (!response)
return nullptr;
sk_sp<SkData> data = MakeSkDataFromBuffer(response->data.buffer);
if (!data)
return nullptr;
return SkFontMgr::RefDefault()->makeFromData(std::move(data));
}
