https://bugs.kde.org/show_bug.cgi?id=445612
Bug ID: 445612
Summary: When cropping from center, the crop area shrinks
asymmetrically after it overflows the image boundary
Product: digikam
Version: 7.3.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Plugin-Editor-Crop
Assignee: digikam-bugs-n...@kde.org
Reporter: war...@gmx.de
Target Milestone: ---
SUMMARY
I have a 4:3 image which shows an object. I want to crop an area with 1:1
aspect that is centered on that object, and which will use the image's full
height, which means that it only cuts away parts of the image to the left and
right.
STEPS TO REPRODUCE
1. Start crop tool
2. Position initial 1:1 crop, centered on the object so that the frame touches
the left and right edge of the object
3. Enlarge the crop, but with keeping the object in the center (by pressing
Ctrl during dragging)
4. At first, the Crop area enlarges as expected
OBSERVED RESULT
If I enlarge the crop area so much that one of its sides leaves the image area,
the area shrinks as soon as I release the mouse button in order to fit into the
image again. The problem is that this does not keep the center of the area.
EXPECTED RESULT
1a. Either the crop area should keep its center after releasing the mouse
button,
1b. or the crop tool should not be able to expand past the image boundary in
the first place. But in that case, it will not be possible to set a crop area
around a center point by just dragging the corners.
The best solution (not only for this problem but also as a general feature) is
to introduce drag handles an the center of the four sides of the crop area. For
reference what I mean, please look at the cropping tool of Gimp.
Thank you.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.16-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-4590 CPU @ 3.30GHz
Memory: 31.0 GiB of RAM
Graphics Processor: AMD PITCAIRN
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