public bool TryGetNamedColorSpace(NameToken name, out ResourceColorSpace namedToken)
{
namedToken = default(ResourceColorSpace);
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (!namedColorSpaces.TryGetValue(name, out var colorSpaceName))
{
return(false);
}
namedToken = colorSpaceName;
return(true);
}
public void LoadResourceDictionary(DictionaryToken resourceDictionary, bool isLenientParsing)
{
currentResourceState.Push();
if (resourceDictionary.TryGet(NameToken.Font, out var fontBase))
{
var fontDictionary = DirectObjectFinder.Get <DictionaryToken>(fontBase, scanner);
LoadFontDictionary(fontDictionary, isLenientParsing);
}
if (resourceDictionary.TryGet(NameToken.Xobject, out var xobjectBase))
{
var xobjectDictionary = DirectObjectFinder.Get <DictionaryToken>(xobjectBase, scanner);
foreach (var pair in xobjectDictionary.Data)
{
if (!(pair.Value is IndirectReferenceToken reference))
{
throw new InvalidOperationException($"Expected the XObject dictionary value for key /{pair.Key} to be an indirect reference, instead got: {pair.Value}.");
}
currentResourceState[NameToken.Create(pair.Key)] = reference.Data;
}
}
if (resourceDictionary.TryGet(NameToken.ExtGState, scanner, out DictionaryToken extGStateDictionaryToken))
{
foreach (var pair in extGStateDictionaryToken.Data)
{
var name = NameToken.Create(pair.Key);
var state = DirectObjectFinder.Get <DictionaryToken>(pair.Value, scanner);
extendedGraphicsStates[name] = state;
}
}
if (resourceDictionary.TryGet(NameToken.ColorSpace, scanner, out DictionaryToken colorSpaceDictionary))
{
foreach (var nameColorSpacePair in colorSpaceDictionary.Data)
{
var name = NameToken.Create(nameColorSpacePair.Key);
if (DirectObjectFinder.TryGet(nameColorSpacePair.Value, scanner, out NameToken colorSpaceName))
{
namedColorSpaces[name] = new ResourceColorSpace(colorSpaceName);
}
else if (DirectObjectFinder.TryGet(nameColorSpacePair.Value, scanner, out ArrayToken colorSpaceArray))
{
if (colorSpaceArray.Length == 0)
{
throw new PdfDocumentFormatException($"Empty ColorSpace array encountered in page resource dictionary: {resourceDictionary}.");
}
var first = colorSpaceArray.Data[0];
if (!(first is NameToken arrayNamedColorSpace))
{
throw new PdfDocumentFormatException($"Invalid ColorSpace array encountered in page resource dictionary: {colorSpaceArray}.");
}
namedColorSpaces[name] = new ResourceColorSpace(arrayNamedColorSpace, colorSpaceArray);
}
else
{
throw new PdfDocumentFormatException($"Invalid ColorSpace token encountered in page resource dictionary: {nameColorSpacePair.Value}.");
}
}
}
}
