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Fix zoom out when wheel event.deltaY is zero

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Don't apply zoom in or zoom out when deltaY is zero on wheel events.
Should fix https://github.com/openseadragon/openseadragon/issues/947 and not make OpenSeadragon zoom out when scrolling horizontally on a touchpad
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Christophe Avenel 2023-10-25 09:26:48 +02:00 committed by GitHub
parent 640526b444
commit 810987210c
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1 changed files with 1 additions and 1 deletions
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src/mousetracker.js
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@ -2070,7 +2070,7 @@
// y-index scrolling.
// event.deltaMode: 0=pixel, 1=line, 2=page
// TODO: Deltas in pixel mode should be accumulated then a scroll value computed after $.DEFAULT_SETTINGS.pixelsPerWheelLine threshold reached
nDelta = event.deltaY < 0 ? 1 : -1;
nDelta = event.deltaY ? (event.deltaY < 0 ? 1 : -1) : 0;
eventInfo = {
originalEvent: event,