Unplanned
Last Updated: 02 Jun 2021 14:58 by ADMIN

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;

Completed
Last Updated: 27 May 2021 11:54 by ADMIN
Release LIB 2021.2.531 (31/05/2021)
This is not a valid PDF scenario as having appearance state requires having multistate appearances. However, we should handle this invalid document scenario on our side so that the app does not crash with NullReferenceException.
Completed
Last Updated: 27 May 2021 10:11 by ADMIN
Release LIB 2021.2.531 (31/05/2021)
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. 
Unplanned
Last Updated: 26 May 2021 10:31 by ADMIN
When executing a Find command in Fit to Width scrolling mode (when more than one page and the result is on the next page) the search result is shown on the bottom of the page instead of the page being centered according to the content found, which results in the number of the current page as well (check the attached image). 
Unplanned
Last Updated: 26 May 2021 06:35 by ADMIN

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;

Unplanned
Last Updated: 03 May 2021 08:35 by ADMIN
The editor text is not visible with some themes. Implement an event that allows you to access the active editor and change its properties. 
Completed
Last Updated: 03 May 2021 07:15 by ADMIN
Release LIB 2021.1.329 (29/3/2021)
Invalid character rendering due to the glyphs caching.
Unplanned
Last Updated: 21 Apr 2021 07:04 by ADMIN

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.


Unplanned
Last Updated: 20 Apr 2021 13:03 by ADMIN
When the document contains an invalid code space range in the embedded CMap table the CMap table is not correctly imported, which leads to wrong character mapping in the text selection.
Completed
Last Updated: 19 Apr 2021 10:56 by ADMIN
Release LIB 2021.1.419 (19/04/2021)
When the Text Rise ("Ts") operator is set the text baseline is moved in the opposite direction according to its default location.
BT 48 819.32 Td -16.6 Ts (Some text to display) Tj ET
Unplanned
Last Updated: 16 Apr 2021 12:04 by ADMIN
Exception if pdf has different orientations and the thumbnails are used
Unplanned
Last Updated: 08 Apr 2021 07:18 by ADMIN
A shape is draw incorrectly when showing a specific file
Completed
Last Updated: 29 Mar 2021 14:23 by ADMIN
Release LIB 2021.1.504 (05/04/2021)
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.
Completed
Last Updated: 26 Mar 2021 11:55 by ADMIN
Release R2 2021
ADMIN
Created by: Tanya
Comments: 0
Category: PDFViewer
Type: Feature Request
3
Add support for Lab color space. Currently alternate color is used to render the pixels, which may result in incorrect colors.
Unplanned
Last Updated: 25 Mar 2021 07:55 by ADMIN

According to the PDF specification (Adobe® Portable Document Format Version 1.7):
Append a rectangle to the current path as a complete subpath, with lower-left corner (x, y) and dimensions width and height in user space.

The operation: 

x y width height re

An invalid case:

0 - 595 -842 re

This leads to an exception thrown: System.NullReferenceException: 'Object reference not set to an instance of an object.'

Unplanned
Last Updated: 23 Mar 2021 00:20 by Hashitha
Created by: Michel
Comments: 1
Category: PDFViewer
Type: Feature Request
13
An implementation of JPXDecoder should be created to allow the decompression of data encoded using the wavelet-based JPEG2000 standard.

Guidelines of how to provide a custom implementation of the JPXDecode filter can be found in the Customize Rendering section of the documentation and a sample implementation can be found in the SDK examples.
Completed
Last Updated: 18 Mar 2021 07:17 by ADMIN
Release LIB 2021.1.315 (15/3/2021)
When the image has inverted colors and the color space is of type Separation the document is not decoded correctly and it is rendered with inverted colors.
Completed
Last Updated: 05 Mar 2021 12:46 by ADMIN
Release LIB 2021.1.309 (9/3/2021)
Created by: Daniel
Comments: 2
Category: PDFViewer
Type: Bug Report
0

Hi Telerik Support

We use your Telerik PDF-Viewer since your last Version "UI for WPF R1 2021" which supports Type 3 fonts.
Now the version runs productive by our customers. But after a day, they found some special PDFs that doesn't work quite right with your PDF-Viewer.

In the appendix you will find the PDf-Files as samples for the bugs that i'm describing.
Because of data privacy, the PDF-Files are cutted and cropped.
Also a demo project is appended (It could also be reproduced with the demo Progress Telerik WPF UI for th PDF-Viewer).

First Problem: Blank Page

Hint: It seems that only a few PDF-Files from a specific program seems to be a problem.

  1. Open Demo "WpfAppPdfViewer.exe"
  2. Open the file sample_1_blank_page.pdf(see appendix)
  3. You will see only a blank page
  4. Open the same PDF-File in another PDF-Reader like Adobe Reader and you will see a scan with an illegible stamp of an address

Second Problem: Displaying data delayed

  1. Open Demo "Progress Telerik UI for WPF"
  2. Open the file sample_2_delayed_display.pdf (see appendix)
  3. You will see only a blank page
  4. Wait approx. 5-10 sec. and you will see the content of the PDF-File.

I would be glad for a quick possible solution for our customer.

Best regards

Serge Schoop

Unplanned
Last Updated: 05 Mar 2021 12:09 by ADMIN
According to the PDF specification: Codes are never longer than 12 bits; therefore, entry 4095 is the last entry of the LZW table.
Completed
Last Updated: 22 Feb 2021 14:59 by ADMIN
Release R1 2021 SP1
When importing a document containing a specific image encoded with JBIG2Decode an exception is thrown.