The RadPdfViewer does not show text when pdf document is loaded.

RadPdfViewer has problems displaying a PDF with text in front of an image.

The RadPdfViewer prints document in different margins than Adobe Reader.

RadPdfViewer shows the wrong colors for some pictures.

The RadPDFViewer cannot dispose the current PDF document.

RadPdfViewer does not show text when pdf document is loaded.All pages are black.

Use the document from the ticket in order to reproduce the issue.

Try to open a document that contains type 1 fonts.

When you zoom the RadPdfViewer programatically when scrolling position is changed to another page.

1. Create a new project with RadPdfViewer. 

2. Try to load the pdf file from this ticket.

Handled InvalidDataException occurs while Zip Library tries to decompress wrongly decrypted stream.

To reproduce:
- Load a pdf file at the constructor and try to load another pdf file on Form.Load => the result is that the second pdf is not loaded.
 public Form1()
        {
            InitializeComponent();
            radPdfViewer1.LoadDocument("..\\..\\pdfSample.pdf");

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            radPdfViewer1.LoadDocument("..\\..\\test.pdf");
        }

Workaround: unload the first loaded document prior loading the second one

The CID font may define a description of the glyph widths. By specification, the widths can be defined in two ways - with start and end CID codes or with and an array of CID codes. However, the current implementation supports only CID arrays as direct property and not as an indirect object. This leads to incorrectly imported glyph widths and text positioning issues.

Open large file in RadPDFViewer. Navigate from page 70 to page 250 or enter number by hand and you will notice that the page is opened slowly.

There is opportunity to further optimize the caching mechanism of the image sources, which will reduce the memory consumption. The fast scrolling in a document containing big images could lead to an OutOfMemoryException.
Openining very large images as well. 

The RadPdfViewer throws ArgumentOutOfRangeException, when document is loaded.

Resolution: 
An exception message is shown when load the pdf document which contains unsupported encryption method. 

PdfViewer - throws System.OutOfMemoryException in PdfElementsRenderer.RenderImage when the scroll is moving fast.