SUMMARY Tried two versions of gwenview: 19.12.3 and 21.04.0. Same problem. When I try dragging gray square handles, they do not change cropped area. Handles stay on image borders and do not move. I can crop images in Advanced Settings by changing numeric values only. STEPS TO REPRODUCE gwenview 19.12.3 and gwenview 21.04.0 I use Wacom Intuos Draw small and it won't do this crop function. OBSERVED RESULT gwenview 19.12.3 and gwenview 21.04.0 I connected simple optical mouse and this crop function works. With optical mouse I can crop both ways: by dragging handles and by changing numeric values. But with tablet — no way — can't crop by dragging handles. EXPECTED RESULT Expect Wacom Intuos Draw to work fully as optical mouse. SOFTWARE/OS VERSIONS Operating System: Kubuntu 20.04 KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 Kernel Version: 5.8.0-63-generic OS Type: 64-bit Processors: 12 × AMD Ryzen 5 1600 Six-Core Processor Memory: 15,6 GiB of RAM ADDITIONAL INFORMATION Motherboard: X370 GAMING PLUS (MS-7A33) BIOS: American Megatrends Inc. Distributor ID: Ubuntu Description: Ubuntu 20.04.2 LTS Release: 20.04 Codename: focal
Similar problem with VirtualBox. Solution: Exec=bash -c 'QT_XCB_TABLET_LEGACY_COORDINATES=1 VirtualBox %U' Source: https://forums.virtualbox.org/viewtopic.php?f=7&t=97881
Only Exec= option was changed in virtualbox.desktop Exec=QT_XCB_TABLET_LEGACY_COORDINATES=1 VirtualBox %U in /usr/share/applications/virtualbox.desktop does the trick - I can use Wacom Only Exec= option was changed in org.kde.gwenview.desktop Exec=QT_XCB_TABLET_LEGACY_COORDINATES=1 gwenview %U in /usr/share/applications/org.kde.gwenview.desktop has no effect - I can't change crop area with Wacom
Same problem with newer Gwenview in Mageia 8 and Manjaro 21.07 releases (contains QT 5.15.2). Can’t change crop area with Wacom Intuos Draw Pen S North White (CTL-490DW-N).
Also I can't drag picture with Wacom pen when it is scaled. I think the root of this issue is the same, so I add comment instead posting new bug report.
Same problem with Version 20.12.3 on Kubuntu 21.04.
Same problem in gwenview-release-21.04 Gwenview Version 21.04.3
Same on Gwenview Version 21.08.1 Operating System: Kubuntu 21.04 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.11.0-34-generic (64-bit) Graphics Platform: X11