void UFont::Serialize( FArchive& Ar )
{
Super::Serialize( Ar );
Ar << CharRemap;
// Update any composite font data to use bulk data with us as its outer
if( Ar.UE4Ver() < VER_UE4_SLATE_BULK_FONT_DATA )
{
auto UpgradeFontDataToBulk = [this](FFontData& InFontData)
{
if( InFontData.FontData_DEPRECATED.Num() > 0 )
{
UFontBulkData* FontBulkData = NewObject<UFontBulkData>(this);
FontBulkData->Initialize(InFontData.FontData_DEPRECATED.GetData(), InFontData.FontData_DEPRECATED.Num());
InFontData.BulkDataPtr = FontBulkData;
InFontData.FontData_DEPRECATED.Empty();
}
};
for( FTypefaceEntry& TypefaceEntry : CompositeFont.DefaultTypeface.Fonts )
{
UpgradeFontDataToBulk(TypefaceEntry.Font);
}
for( FCompositeSubFont& SubFont : CompositeFont.SubTypefaces )
{
for( FTypefaceEntry& TypefaceEntry : SubFont.Typeface.Fonts )
{
UpgradeFontDataToBulk(TypefaceEntry.Font);
}
}
}
}
TSharedPtr<const FCompositeFont> FLegacySlateFontInfoCache::GetSystemFont()
{
if (!SystemFont.IsValid())
{
TArray<uint8> FontBytes = FPlatformMisc::GetSystemFontBytes();
UFontBulkData* FontBulkData = NewObject<UFontBulkData>();
FontBulkData->Initialize(FontBytes.GetData(), FontBytes.Num());
SystemFont = MakeShareable(new FStandaloneCompositeFont(NAME_None, TEXT("DefaultSystemFont"), FontBulkData, EFontHinting::Default));
}
return SystemFont;
}
const FFontData& FLegacySlateFontInfoCache::GetLastResortFont()
{
// GetLastResortFont is called directly from the font cache, so may be called from multiple threads at once
FScopeLock Lock(&LastResortFontCS);
if (!LastResortFont.IsValid())
{
const FString LastResortFontPath = FPaths::EngineContentDir() / TEXT("Slate/Fonts/LastResort.ttf");
UFontBulkData* FontBulkData = NewObject<UFontBulkData>();
FontBulkData->Initialize(LastResortFontPath);
LastResortFont = MakeShareable(new FFontData(LastResortFontPath, FontBulkData, EFontHinting::Default));
}
return *LastResortFont;
}
const FFontData& FLegacySlateFontInfoCache::GetFallbackFontData()
{
// GetFallbackFontData is called directly from the font cache, so may be called from multiple threads at once
FScopeLock Lock(&FallbackFontDataCS);
// The fallback font can change if the active culture is changed
const int32 CurrentHistoryVersion = FTextLocalizationManager::Get().GetTextRevision();
if (!FallbackFontData.IsValid() || FallbackFontDataHistoryVersion != CurrentHistoryVersion)
{
FallbackFontDataHistoryVersion = CurrentHistoryVersion;
const FString FallbackFontPath = FPaths::EngineContentDir() / TEXT("Slate/Fonts/") / (NSLOCTEXT("Slate", "FallbackFont", "DroidSansFallback").ToString() + TEXT(".ttf"));
UFontBulkData* FontBulkData = NewObject<UFontBulkData>();
FontBulkData->Initialize(FallbackFontPath);
FallbackFontData = MakeShareable(new FFontData(FallbackFontPath, FontBulkData, EFontHinting::Default));
}
return *FallbackFontData;
}
TSharedPtr<const FCompositeFont> FLegacySlateFontInfoCache::GetCompositeFont(const FName& InLegacyFontName, const EFontHinting InLegacyFontHinting)
{
if (InLegacyFontName.IsNone())
{
return nullptr;
}
FString LegacyFontPath = InLegacyFontName.ToString();
// Work out what the given path is supposed to be relative to
if (!FPaths::FileExists(LegacyFontPath))
{
// UMG assets specify the path either relative to the game or engine content directories - test both
LegacyFontPath = FPaths::GameContentDir() / InLegacyFontName.ToString();
if (!FPaths::FileExists(LegacyFontPath))
{
LegacyFontPath = FPaths::EngineContentDir() / InLegacyFontName.ToString();
if (!FPaths::FileExists(LegacyFontPath))
{
// Missing font file - just use what we were given
LegacyFontPath = InLegacyFontName.ToString();
}
}
}
const FLegacyFontKey LegacyFontKey(*LegacyFontPath, InLegacyFontHinting);
{
TSharedPtr<const FCompositeFont>* const ExistingCompositeFont = LegacyFontNameToCompositeFont.Find(LegacyFontKey);
if(ExistingCompositeFont)
{
return *ExistingCompositeFont;
}
}
UFontBulkData* FontBulkData = NewObject<UFontBulkData>();
FontBulkData->Initialize(LegacyFontPath);
TSharedRef<const FCompositeFont> NewCompositeFont = MakeShareable(new FStandaloneCompositeFont(NAME_None, LegacyFontPath, FontBulkData, InLegacyFontHinting));
LegacyFontNameToCompositeFont.Add(LegacyFontKey, NewCompositeFont);
return NewCompositeFont;
}
const FFontData& FLegacySlateFontInfoCache::GetFallbackFont()
{
const FName FallbackFontName = *(FPaths::EngineContentDir() / TEXT("Slate/Fonts/") / (NSLOCTEXT("Slate", "FallbackFont", "DroidSansFallback").ToString() + TEXT(".ttf")));
// GetFallbackFont is called directly from the font cache, so may be called from multiple threads at once
FScopeLock Lock(&FallbackFontCS);
{
TSharedPtr<const FFontData>* const ExistingFallbackFont = FallbackFonts.Find(FallbackFontName);
if(ExistingFallbackFont)
{
return **ExistingFallbackFont;
}
}
const FString FallbackFontPath = FallbackFontName.ToString();
UFontBulkData* FontBulkData = NewObject<UFontBulkData>();
FontBulkData->Initialize(FallbackFontPath);
TSharedRef<const FFontData> NewFallbackFont = MakeShareable(new FFontData(FallbackFontPath, FontBulkData, EFontHinting::Default));
FallbackFonts.Add(FallbackFontName, NewFallbackFont);
return *NewFallbackFont;
}