fix: horizontal scroll when shift modifier is pressed#1513
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ardiya wants to merge 1 commit intowkentaro:mainfrom
Open
fix: horizontal scroll when shift modifier is pressed#1513ardiya wants to merge 1 commit intowkentaro:mainfrom
ardiya wants to merge 1 commit intowkentaro:mainfrom
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similar issue: #1504 |
minewilliam
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Jan 22, 2026
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minewilliam
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Tested. This fixes the side scrolling problem on my Linux machine.
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It may be Linux specific issue. I can't reproduce on macOS and Windows (it does on Ubuntu). |
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Issue:
Both Scroll and Shift+Scroll resulted in vertical(up-down) scrolling in QT5.
It seems the else(QT5) condition properly handle the shift+scroll condition, ref: https://github.com/ardiya/labelme/blob/57fbf2b9a749cd77ac5f03f005ee6206d671ece8/labelme/widgets/canvas.py#L928-L929 So I just need to handle the QT5 condition.
Expected result:
In Qt5, the Shift+Scroll should result in horizontal(left-right) scroll.
Proposed Fix: This PR
When Shift modifier is pressed, use the y dimension of the scroll and use it to scroll horizontally.
Tested with shift and without shift, the code changes produces expected behavior.