[Digikam-devel] [Bug 207190] New: Wish: improve "rotate Image" overlay-buttons

[Daniel Weigl]

https://bugs.kde.org/show_bug.cgi?id=207190

           Summary: Wish: improve "rotate Image" overlay-buttons
           Product: digikam
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel at kde.org
        ReportedBy: DanielWeigl at gmx.at


Version:           SVN (using Devel)
OS:                Linux
Installed from:    Compiled sources

If you rotate an image using the new overlay-buttons in the imageview a dialog
pops up showing a batch list with only one item. Which hides again quite fast.

I think a flicker-less approach would really enhance user experience.

Mine Idea would be:
If the user clicks the rotate button, the already downsized thumbnail gets
rotated and converted to grayscale or a bit desaturated. But only the Pixmap
currently displayed. In the background the already existing JpegLoosless
rotation gets qued in the background thread.

So the user gets instant feedback and can already rotate other pictures (or the
same one one step further). If the rotation of the actual picture is finished,
the thumbnail gets updated and the thumb is shown in normal color, and the user
knows the background task has finished.

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