Thumbnailer creates BMPs

4 posts, 0 answers
  1. Caleb
    Caleb avatar
    4 posts
    Member since:
    Jan 2009

    Posted 27 Apr 2009 Link to this post

    I've posted about this before and doing a search of the forum reveals other people having this problem, but nobody has any solutions.

    When using the thumbnailer to create a thumbnail, the image it creates is of the bitmap format. Because bitmaps are uncompressed, the resulting thumbnails while smaller in dimensions are often larger in file size.

    At first I thought this problem was simply due to a particular image I was using, but so far every JPEG that I've thumbnailed using RadEditor ends up as a bitmap file. Adding to the confusion, the thumbnail is saved to the document library with a .jpg extension, but the actual file format used is bitmap. This can be seen by right clicking the image in Firefox and selecting properties, which reveals the "Type" of the image to be "BMP image". I also saved the image to my desktop and opened it with Notepad++  and confirmed the file signature (BMP files begin with the letters "BM").

    Upon further testing, the same problem happens to PNG files and also GIFs. They are saved as BMP files but the original extension is maintained.

    Here are some links to the original files and then thumbnails created using RadEditor:
    Original JPEG: http://gfsmesh.com/store/images/j0437274.jpg
    Thumbnail (which is a BMP): http://gfsmesh.com/store/images/j0437274Medium.jpg
    Original 32 bit PNG (has alpha transparency): http://gfsmesh.com/store/images/homepage-callout-frame.png
    Thumbnail (is a BMP, note the black where transparency was): http://gfsmesh.com/store/images/homepage-callout-frameThumbnail.png

    As for the server configuration:
    Windows SharePoint Services running across 2 web front ends and 1 database server. The servers have all of the .NET frameworks through 3.5 installed and are up to date with the latest patches. The SharePoint installation has a variety of customizations, but they're mostly visual. Nothing I can think of that would have anything to do with code at the level RadEditor runs. The currently installed version of RadEditor for MOSS is 4.5.4.

    If there is any other information I can provide to help solve this problem, please let me know.
  2. Stanimir
    Admin
    Stanimir avatar
    1653 posts

    Posted 29 Apr 2009 Link to this post

    Hello Caleb,

    Unfortunately the functionality of creating the image is based on the .NET framework. I used your provided image in our test server but I was not able to reproduce the problem. What you should know is that in the latest version of RadEditor for MOSS which is 5.4.0 the thumbnail functionality of the Images dialog is replaced with entire editing dialog, where you can modify the dimensions and opacity of the image. You can flip, rotate, crop the image as well.

    You can install the Trial version and check if the problem will persist. There is Information on upgrading from version 4.x to version 5.x in the following help article http://www.telerik.com/help/aspnet-ajax/upgrade-instructions-from-v4-to-v5.html.

    Kind regards,
    Stanimir
    the Telerik team

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  3. Caleb
    Caleb avatar
    4 posts
    Member since:
    Jan 2009

    Posted 30 Apr 2009 Link to this post

    Thanks Stanimir. Is there any way you could tell me which classes in the .NET framework RadEditor for MOSS Lite uses? I really need to fix this problem and if I knew the classes / routines being used, I could write small test programs in an attempt to isolate the problem with my installed frameworks.
  4. Stanimir
    Admin
    Stanimir avatar
    1653 posts

    Posted 07 May 2009 Link to this post

    Hi Caleb,

    Could you please open a formal support ticket and I will send you the required code there? Just add reference to this forum thread (ID is 208379).

    Thank you.


    Best wishes,
    Stanimir
    the Telerik team

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