IFACEMETHODIMP CanvasTextFormatFactory::GetSystemFontFamiliesFromLocaleList(
IVectorView<HSTRING>* localeList,
uint32_t* valueCount,
HSTRING** valueElements)
{
return ExceptionBoundary(
[&]
{
CheckInPointer(valueCount);
CheckAndClearOutPointer(valueElements);
auto factory = CustomFontManager::GetInstance()->GetSharedFactory();
ComPtr<IDWriteFontCollection> systemFontCollection;
ThrowIfFailed(factory->GetSystemFontCollection(&systemFontCollection));
uint32_t familyCount = systemFontCollection->GetFontFamilyCount();
ComArray<HSTRING> stringArray(familyCount);
for (uint32_t i = 0; i < familyCount; ++i)
{
ComPtr<IDWriteFontFamily> fontFamily;
ThrowIfFailed(systemFontCollection->GetFontFamily(i, &fontFamily));
ComPtr<IDWriteLocalizedStrings> familyNames;
ThrowIfFailed(fontFamily->GetFamilyNames(&familyNames));
WinString familyName = GetFamilyName(familyNames, localeList);
familyName.CopyTo(&stringArray[i]);
}
stringArray.Detach(valueCount, valueElements);
});
}
static void SetFrom(HSTRING* outputValue, WinString const& value)
{
value.CopyTo(outputValue);
}