RadPdfViewer partially supports CCITTFaxDecode (that is basically TIFF). There are some limitations that are not supported at this stage like EncodedByteAlign = true or Group 3, 2-D encoding.
Bitonal image scaling algorithms which improve the readability of bitonal, black and white images. Due to the lack of colors within the palette of 1-bit black and white images, they become splotchy and distorted when zoomed in or out
They are used by the page and the XObjects drawn on it and deal with the overlaying of the colors. These groups are described on page 556 of PdfReference 1.7.
Import documents that use this type of encryption. Currently, a handled NotSupportedEncryptionException is thrown while importing such a document and it cannot be opened in RadPdfViewer. Available in R1 2018 Official Release version.
Dialog for inputting the password should be implemented in order to be able to decrypt the file content.
The feature was implemented for Q2 2014.
Add support for importing and filling interactive forms. Interactive Forms content is visualized read-only in RadPdfViewer UI with R1 2017 Release Available in R3 2017 Official Release Version.
Create appropriate methods, properties and events that will allow to users to scroll the RadPdfViewer and handle the scrolling events. Introduce API that will allow to manipulate the scroll bars.
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When using CTRL+Mousewheel to zoom in to a PDFViewer document, it should zoom into the point where the mouse pointer is located. Currently it just does a simple zoom of the whole document. For example see Acrobat Reader or Google Maps.
When this feature is implemented it should visualize the bookmarks similarly to in the attached screenshot. Available in R3 2018 Official Release Version.
A rubber stamp annotation displays text or graphics intended to look as if they were stamped on the page with a rubber stamp. When opened, it displays a pop-up window containing the text of the associated note.
Currently, RadPdfViewer uses WPF DrawingContext class for drawing page elements to a Canvas. When PDF page has many content elements (usually geometries) drawing the page may be time-consuming and freezes the UI. Instead, we should consider implementing another approach for rendering the content asynchronously which would improve the user experience.
Currently, all images are decoded and preserved in RGBA format (32 bits for each pixel). However, there are files that optimize their images by preserving them with 1 bit for each pixel. In WPF we may create monochrome System.Windows.Media.ImageSource that would optimize the performance and memory consumption when rendering such images. Available in R1 2018 Official Release Version.
At this point, the Print() method allowing the customers to silently print a document uses the PrintableAreaWidth and PrintableAreaHeight properties of the print dialog, which are read-only and cannot be changed through the API. Consider changing them with PrintTicket.PageMediaSize. We should also consider the scenario when the client needs to print a smaller PDF page on a bigger page size. For instance, A5 page to be printed on an A4 sheet without scaling the content.