RadPdfViewer does not read image resources defined in Form XObject elements.

Some files when opened with PdfViewer will throw a KeyNotFoundException which will be handled. Parts of the text in the file might or might not be missing.

After saving a document from PdfViewer, it cannot be opened by other applications as it is still locked.

Using Adobe the edit mode is triggered on the first mouse click.

When rendering a PDF document page in FixedDocumentSinglePagePresenter, blank pages are displayed, when the document contains images.

This would allow switching the focus between form field controls by using the Tab key.

When creating thumbnails from RadFixedPage with images, the page images are missing from the resultant thumbnail.

CreateThumbnail of ThumbnailFactory leads to InvalidOperationException: 'The calling thread cannot access this object because a different thread owns it.', when called from separate STA thread.

Add support for Date picker form field type so the user can pick a date through a date time picker.

This is Unicode (UCS-2) encoding for the Adobe-GB1 character collection.

Described on page 443 in Pdf Reference 1.7.

In Adobe and Foxit readers, the user can draw different shapes, which are later saved as images in the document.

User is not able to type in the form fields on touch devices.

The exception is thrown during "Put" operator execution.

Telerik.Windows.Zip.InvalidDataException for unknown (0xAD) compression method is thrown for some object streams.

The widgets of the interactive forms are not respected when creating a thumbnail from a PDF page. Implement logic for adding the form fields widgets to the generated image as well.

Visualizing a page with a huge number of images (40000) freezes the application.
When switching to the FixedDocumentSinglePageViewPresenter, all the page content should be loaded so it can be later rendered. Although the images are loaded asynchronously, there are too many threads started which seems to cause the hang. Also, according to profiling results, it seems like the image caching causes performance diminishments in such scenarios. 

Add support for respecting Custom UI Layers when exporting Fixed Page to an image.

When importing the document as DocumentSource the stream will be loaded asynchronously and the document won't be loaded when the Print() method is called, NullReferenceException is thrown.

Use the attached project to reproduce. 

Workaround:

var combo = toolbar.ChildrenOfType<PercentComboBox>().FirstOrDefault();

var binding = new System.Windows.Data.Binding();
binding.Path = new System.Windows.PropertyPath("ScaleFactor");
binding.Mode = System.Windows.Data.BindingMode.TwoWay;
binding.Source = pdfViewer;
binding.UpdateSourceTrigger = System.Windows.Data.UpdateSourceTrigger.PropertyChanged;
BindingOperations.SetBinding(combo, PercentComboBox.ValueProperty, binding);

var binding1 = new System.Windows.Data.Binding();
binding1.Source = pdfViewer;
BindingOperations.SetBinding(combo, PercentComboBox.RadPdfViewerProperty, binding);

To reproduce:

- Search for a specific word until the last occurrence is found and a message appears. 

- Click the FindPrevious button

Result: A message appears.

Expected: The previous entry is selected.