private void CheckResourcesOfAppearanceStreams(PdfDictionary appearanceStreamsDict, ICollection <PdfObject>
checkedObjects)
{
if (checkedObjects.Contains(appearanceStreamsDict))
{
return;
}
else
{
checkedObjects.Add(appearanceStreamsDict);
}
foreach (PdfObject val in appearanceStreamsDict.Values())
{
if (val is PdfDictionary)
{
PdfDictionary ap = (PdfDictionary)val;
if (ap.IsDictionary())
{
CheckResourcesOfAppearanceStreams(ap, checkedObjects);
}
else
{
if (ap.IsStream())
{
CheckAppearanceStream((PdfStream)ap);
}
}
}
}
}
protected internal virtual void CheckResourcesOfAppearanceStreams(PdfDictionary appearanceStreamsDict)
{
foreach (PdfObject val in appearanceStreamsDict.Values())
{
if (val is PdfDictionary)
{
PdfDictionary ap = (PdfDictionary)val;
if (ap.IsDictionary())
{
CheckResourcesOfAppearanceStreams(ap);
}
else
{
if (ap.IsStream())
{
if (!IsAlreadyChecked(ap))
{
CheckResources(ap.GetAsDictionary(PdfName.Resources));
}
}
}
}
}
}