Approved
Last Updated: 22 May 2019 09:48 by ADMIN
RadPdfViewer does not read image resources defined in Form XObject elements.
Approved
Last Updated: 06 Jun 2017 13:45 by ADMIN
Default DctDecode implementation uses System.Windows.Media.Imaging.BitmapImage in order to get the image pixels. However, when the image uses some complex colorspace (for instance Separation based on CMYK) the BitmapImage is initialized with a different format and we use System.Windows.Media.Imaging.FormatConvertedBitmap in order to get the pixels in CMYK colorspace. There seems to be some issue with these calculations as the resulting image has incorrect pixels.

WORKAROUND: You may inherit DctDecode class in order to implement custom decoder and call DecodeWithJpegDecoder method from the base class as mentioned in the note of this documentation article:

http://docs.telerik.com/devtools/wpf/controls/radpdfviewer/customization-and-extensibility/customize-pdf-rendering

A sample implementation of these custom decoder may be seen below:

public class CustomDctDecode : DctDecode
{
    public override byte[] Decode(PdfObject decodedObject, byte[] inputData, DecodeParameters parms)
    {
        return DecodeWithJpegDecoder(inputData);
    }
}
Approved
Last Updated: 22 May 2017 11:06 by ADMIN
NullReferenceException is thrown when importing a document with AcroForm referencing a missing object for fields collection. This is a regression as the same document will be imported without a problem in previous versions of RadPdfViewer as the AcroForm object would be entirely skipped.
Approved
Last Updated: 08 Mar 2017 13:34 by ADMIN
As a result, the glyphs are not measured and positioned properly. The issue applies to the TrueType and Type1 fonts.
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
The exception is thrown while decoding TIFF images. Although the document is properly loaded and the end user is not impacted, the DivideByZeroException is logged and present in the OnException event handler parameters. 
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
The exception is thrown during "Put" operator execution.
Approved
Last Updated: 31 Oct 2018 08:06 by ADMIN
Currently, when we parse inline image dictionaries we rely on the assumption that the colorspace will be PdfName. However, there are files with complex colorspaces that are PdfArray and InvalidCastException is thrown. All the content after this exception is lost and not visualized by RadPdfViewer.
Approved
Last Updated: 31 Oct 2018 07:54 by ADMIN
When there is no ToUnicode CMap, the text from the Simple Font instance should be extracted by mapping the glyph name to its corresponding charcode according to Adobe Glyph List. Additionally, the Differences array should be included in these calculations when there is custom encoding. The current implementation of RadPdfViewer makes ToString to the original char id byte value which leads to wrong characters. 
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
This is not quite a valid PDF file scenario according to PDF file specification. However, we may try handling it in order to show the correct number of pages. When the kid is of type Pages, it should be added to the pages traversal recursion only the first time it is met.
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
ADMIN
Created by: Boby
Comments: 0
Category: PDFViewer
Type: Bug Report
1
Even small documents (~30 kb) containing images encoded with CCITTFaxDecode filter can take about 10 seconds to be opened. In 2014 Q1 SP1 such documents load faster.
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
Default RadPdfViewer presenters load image sources async which allows to render the rest PDF content faster. However, FixedDocumentSinglePagePresenter loads images syncrhonously and all page content is rendered right after all images on the page are loaded.
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
Setting DocumentSource throws NullReferenceException when PdfViewer is hosted in ElementHost. When setting the DocumentSource, the Application.Dispatcher is used, but in Winforms app, the Application is not instantiated. 

Steps to reproduce:
1. Host PdfViewer in ElementHost in a WinForms application
2. Set the DocumentSource property
3. Run
Expected: The document is opened
Actual: NullReferenceException is thrown

Workaround: the document could be set to the Document property of PdfViewer. Or instead hosting the PdfViewer for WPF in ElementHost, use WinForms version of the control.
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
There is a similar question in FAQ for FontForge (https://fontforge.github.io/faq.html#mingliu) where it is described that kaiu.ttf (and probably mingliu.ttf) font does not store the correct outlines and its outlines need special treatment in order to be rendered correctly. The Chinese glyphs are rendered wrong in RadPdfViewer as well. However, Adobe Reader, FoxitReader and ChromeViewer render the glyphs correctly.
Approved
Last Updated: 31 Oct 2018 08:06 by ADMIN
The text appears disordered due to wrong calculations of the glyph geometries.
Approved
Last Updated: 31 Oct 2018 07:54 by ADMIN
The slow performance when creating thumbnail is only reproducible with specific documents.
Approved
Last Updated: 31 Oct 2018 08:14 by ADMIN
Document cannot be loaded because the Encrypt property is not set and is null.
Approved
Last Updated: 31 Oct 2018 08:13 by ADMIN
ADMIN
Created by: Mihail
Comments: 0
Category: PDFViewer
Type: Bug Report
0
The performance of loading the thumbnails is decreased with the removing of the cache in PdfViewer. 

Possible reason is that the pages are no longer loaded asynchronously.

Steps to reproduce:
- Open the SDK with the thumbnails for PDFViewer.
- Notice that the load of the thumbnails is slow.
Approved
Last Updated: 31 Oct 2018 08:11 by ADMIN
All annotations are missing because ArgumentNullException is thrown while importing page annotations. The exception is handled and all non-annotation related pdf content is loaded successfully.
Approved
Last Updated: 31 Oct 2018 07:54 by ADMIN
When clicking on link annotations pointing to destinations in the document, and the "Fit one full page to window" mode is activated, the document is not scrolled exactly to the destination.

The issue can be reproduced only in Single Page Presenter mode and when the Top and Left values of the passed parameter are greater than 0.

The problem can also be observed by invoking directly GoToDestination method, as the problem is inside it.