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Fix #4592 by falling back to a legacy ScrollEvent property on Edge. (#4694)

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* Fix #4592 by falling back to a legacy ScrollEvent property on Edge.

* Improve consistency of scroll zoom by rounding everything to 60px
This commit is contained in:
Iván Sánchez Ortega 2016-07-01 16:09:46 +02:00 committed by Vladimir Agafonkin
parent 87e38f1aa4
commit cd30e283cf
2 changed files with 9 additions and 8 deletions
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15
src/dom/DomEvent.js
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@ -228,22 +228,23 @@ L.DomEvent = {
// Chrome on Win scrolls double the pixels as in other platforms (see #4538),
// and Firefox scrolls device pixels, not CSS pixels
_wheelPxFactor: (L.Browser.win && L.Browser.chrome) ? 2 :
(L.Browser.gecko) ? window.devicePixelRatio :
L.Browser.gecko ? window.devicePixelRatio :
1,
// @function getWheelDelta(ev: DOMEvent): Number
// Gets normalized wheel delta from a mousewheel DOM event, in vertical
// pixels scrolled (negative if scrolling down).
// Events from pointing devices without precise scrolling are mapped to
// a best guess of between 50-60 pixels.
// a best guess of 60 pixels.
getWheelDelta: function (e) {
return (e.deltaY && e.deltaMode === 0) ? -e.deltaY / L.DomEvent._wheelPxFactor : // Pixels
(e.deltaY && e.deltaMode === 1) ? -e.deltaY * 18 : // Lines
(e.deltaY && e.deltaMode === 2) ? -e.deltaY * 52 : // Pages
return (L.Browser.edge) ? e.wheelDeltaY / 2 : // Don't trust window-geometry-based delta
(e.deltaY && e.deltaMode === 0) ? -e.deltaY / L.DomEvent._wheelPxFactor : // Pixels
(e.deltaY && e.deltaMode === 1) ? -e.deltaY * 20 : // Lines
(e.deltaY && e.deltaMode === 2) ? -e.deltaY * 60 : // Pages
(e.deltaX || e.deltaZ) ? 0 : // Skip horizontal/depth wheel events
e.wheelDelta ? (e.wheelDeltaY || e.wheelDelta) / 2 : // Legacy IE pixels
(e.detail && Math.abs(e.detail) < 32765) ? -e.detail * 18 : // Legacy Moz lines
e.detail ? e.detail / -32765 * 52 : // Legacy Moz pages
(e.detail && Math.abs(e.detail) < 32765) ? -e.detail * 20 : // Legacy Moz lines
e.detail ? e.detail / -32765 * 60 : // Legacy Moz pages
0;
},

2
src/map/handler/Map.ScrollWheelZoom.js
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@ -20,7 +20,7 @@ L.Map.mergeOptions({
// How many scroll pixels (as reported by [L.DomEvent.getWheelDelta](#domevent-getwheeldelta))
// mean a change of one full zoom level. Smaller values will make wheel-zooming
// faster (and vice versa).
wheelPxPerZoomLevel: 50
wheelPxPerZoomLevel: 60
});
L.Map.ScrollWheelZoom = L.Handler.extend({