fix: normalize Emscripten wheel events by deltaMode#164
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monofuel wants to merge 1 commit intotreeform:masterfrom
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fix: normalize Emscripten wheel events by deltaMode#164monofuel wants to merge 1 commit intotreeform:masterfrom
monofuel wants to merge 1 commit intotreeform:masterfrom
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Raw WheelEvent.deltaX/Y values are not comparable across OS/browser combinations. Linux browsers (Chrome/Firefox) typically report ~120px per notch in DOM_DELTA_PIXEL mode, while macOS trackpads send small continuous values, making scroll feel ~10x too fast on Linux web builds. Normalize each deltaMode to target ~10 units per notch, matching the native Linux X11 backend (fixed ±10) and macOS backend (scrollingDeltaX/Y * 0.1 * 10 getter). Also removes the leftover debug echo from the onWheel handler. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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nope all wrong! both platforms report delta mode 0 |
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Raw WheelEvent.deltaX/Y values are not comparable across OS/browser combinations. Linux browsers (Chrome/Firefox) typically report ~120px per notch in DOM_DELTA_PIXEL mode, while macOS trackpads send small continuous values, making scroll feel ~10x too fast on Linux web builds.
Normalize each deltaMode to target ~10 units per notch, matching the native Linux X11 backend (fixed ±10) and macOS backend (scrollingDeltaX/Y * 0.1 * 10 getter).