private bool IsFeaturePresent(TransformationParserBase parser, GlyphTypeface typeface, uint scriptId, uint languageId, uint featureId)
{
Tag scriptTest = TagConverter.TagFromUint(scriptId);
Tag languageTest = TagConverter.TagFromUint(languageId);
Tag featureTest = TagConverter.TagFromUint(featureId);
foreach (Tag script in parser.GetScriptTags(typeface))
{
if (script == scriptTest)
{
foreach (Tag language in parser.GetLangSysTags(typeface, script))
{
if (language == languageTest)
{
foreach (Tag feature in parser.GetAllFeatureTags(typeface))
{
if (feature == featureTest)
{
return(true);
}
}
return(false);
}
}
return(false);
}
}
return(false);
}
private static StateMachine GetOrCompile(TransformationParserBase parser, TransformationCompilerBase compiler, GlyphTypeface typeface, uint scriptId, uint languageId, uint featureId)
{
Tag scriptTag = new Tag(ToTagString(scriptId));
Tag languageTag = new Tag(ToTagString(languageId));
Tag featureTag = new Tag(ToTagString(featureId));
string key = typeface.FontUri.OriginalString + scriptTag + languageTag + featureTag;
StateMachine machine;
if (!_machineCache.TryGetValue(key, out machine))
{
IEnumerable <Terka.FontBuilder.Parser.Output.IGlyphTransformationTable> tables;
if (featureId == 0)
{
tables = parser.GetTransformationTablesForRequiredFeature(typeface, scriptTag, languageTag);
}
else
{
tables = parser.GetTransformationTablesForOptionalFeature(typeface, scriptTag, languageTag, featureTag);
}
_machineCache[key] = machine = compiler.Compile(tables);
}
return(machine);
}
