Fix page scrolling when using mouse wheel to zoom in Jupyter notebooks #194
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Adds a wheel event listener that prevents event propagation to the parent page while still allowing HiGlass to handle zoom interactions. This fixes the issue where scrolling to zoom in the HiGlass widget would also scroll the Jupyter notebook page, particularly when running notebooks in VS Code. The fix uses stopPropagation() with passive: false to intercept wheel events at the widget container level before they bubble up to the notebook.
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Summary
This PR fixes an issue where scrolling the mouse wheel to zoom in the HiGlass widget would also scroll the Jupyter notebook page, particularly noticeable when running notebooks in VS Code.
Changes
wheelevent listener to the widget container that callsstopPropagation()to prevent the event from bubbling up to the notebook pagepassive: falseto ensure the event handler can properly intercept wheel eventsTesting
Technical Details
The fix is implemented in
src/higlass/widget.jsin theaddEventListenersTo()function, following the same pattern as the existingcontextmenuevent handler. This approach ensures wheel events are handled at the widget level before they can trigger page scrolling.🤖 Generated with Claude Code