Inserting PNG ImageSource into a document and applying the document instance directly to the RadPdfViewer`s Document property (without exporting to stream) leads to a wrong image rendering.
Workaround: Export the document with the PdfFormatProvider:
MemoryStream ms = new MemoryStream();
PdfFormatProvider pdfFormatProvider = new PdfFormatProvider();
pdfFormatProvider.Export(radFixedDocument, ms);
PdfDocumentSource source = new PdfDocumentSource(ms, pdfViewer.DefaultImportSettings);
this.pdfViewer.DocumentSource = source;
Creating a PdfViewer instance without adding it in the visual tree, leads to leaked document presenter instances when the TouchManager is enabled.
Workaround: Disable the TouchManager:
Telerik.Windows.Input.Touch.TouchManager.IsEnabled = false;
Currently, the PdfProcessing document model is providing support only for a single function in the Function entry.
According to the PDF Specification: Function: A 1-in, n-out function or an array of n 1-in, 1-out functions.