Cropping, keying out a colour, mirroring and replacing a picture set
its crop rectangle, transparent colours and original directly and put
only the displayed pixmap into the undo command. After Ctrl+Z the
picture looked right, but a save still wrote the undone crop and
colours, and the picture came back cropped once reopened; a later
crop or colour dialog also started from the undone values. The three
are now one property, imageSource, changed in the same undo step as
the pixmap.
The crop itself moves out of the dialog into applyCrop(), so that it
can be applied without one.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Beat Hangartner
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