Some rotated images are not displayed in the thumbnail as rotated

[GoogleCodeExporter]

Hi Ozgur

Please take a look at this screenshot:

http://twitpic.com/4s8j18/full

Here, the second picture is actually rotated but in the preview, it is not 
being displayed as rotated.

My rotate function looks like:

---------------
public void PerformRotateAnticlockwise()
{
    foreach (var item in thumbnailListView.SelectedItems)
    {
        var asset = (WebImageAsset)item.Tag;
        asset.CommitState = CommitState.Modified;

        item.BeginEdit();
        using (var img = ImageHelper.LoadImage(item.FileName))
        {
            img.RotateFlip(RotateFlipType.Rotate90FlipNone);
            ImageHelper.SaveImage(img, item.FileName);
        }
        item.Update();
        item.EndEdit();
    }

    notifyNeedUpdatePreview();
    PerformUpdateUI();
}
---------------

Can you tell me whether I'm doing some issues during rotate or whether it is a 
feature of ImageListView to e.g. take care of some EXIF information about 
rotation?

Thanks
Uwe

Original issue reported on code.google.com by uwe.k...@gmail.com on 2 May 2011 at 5:17

[GoogleCodeExporter]

Yes, there is the AutoRotateThumbnails property.

Original comment by oozcitak on 2 May 2011 at 9:52

[GoogleCodeExporter]

Cool. Thanks a lot and sorry for posting this as an issue.

Original comment by uwe.k...@gmail.com on 2 May 2011 at 9:57

[GoogleCodeExporter]

No problem. Nice to hear from people using the control.

Thanks,
Ozgur

Original comment by oozcitak on 2 May 2011 at 10:05

• Changed state: Invalid

[GoogleCodeExporter]

After setting ImageListView.AutoRotateThumbnails to FALSE, the image still 
always gets rotated. Are there additional steps I have to perform?

Original comment by uwe.k...@gmail.com on 2 May 2011 at 10:08

[GoogleCodeExporter]

Sorry, it looks like Image.RotateFlip() does not set the rotation EXIF tag at 
all. Hence, this issue is not related to AutoRotateThumbnails. Can you attach 
the jellyfish image (zipped to prevent re-encoding)?

Original comment by oozcitak on 2 May 2011 at 10:32

• Changed state: New

[GoogleCodeExporter]

Thanks, Ozgur

Here is the image:

https://www.zeta-uploader.com/49186544

Best regards
Uwe

Original comment by uwe.k...@gmail.com on 2 May 2011 at 10:41

Attachments:

• 49186544[1]

[GoogleCodeExporter]

Thanks, looking into it.

Original comment by oozcitak on 2 May 2011 at 10:53

[GoogleCodeExporter]

I extracted the EXIF thumbnail and the original image from the file (attached 
screenshot). The thumbnail and the original jellyfish image does not match. It 
seems like the original was rotated 90 degrees CCW but the thumbnail was not. 
This seems to be the cause of the issue. 

If you are dealing with such images, you can force the control to disregard the 
EXIF thumbnail by setting the UseEmbeddedThumbnails property to 
UseEmbeddedThumbnails.Never. 

Best regards,
Ozgur

Original comment by oozcitak on 2 May 2011 at 11:20

Attachments:

• Jelly.png

[GoogleCodeExporter]

It works. Perfekt, thank you :-)

Original comment by uwe.k...@gmail.com on 2 May 2011 at 11:24

[GoogleCodeExporter]

Good to hear :)

Original comment by oozcitak on 2 May 2011 at 11:27

• Changed state: Invalid

[GoogleCodeExporter]

i got the same problem again and again, can you give me the "Exif Tester" 
download link .
Thanks.

Original comment by medhelpn...@gmail.com on 2 May 2011 at 12:50

[GoogleCodeExporter]

Sure. I've attached the exe, source code is here:

http://code.google.com/p/exiflibrary/source/browse/

Original comment by oozcitak on 2 May 2011 at 1:13

• Changed state: New

Attachments:

• ExifTest.zip

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Thank you So much Ozgur.

Original comment by medhelpn...@gmail.com on 2 May 2011 at 2:54

[GoogleCodeExporter]

Closing...

Original comment by oozcitak on 7 May 2011 at 9:24

• Changed state: Done