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Add mouseWheelZoomDelta option to MapOptions

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This commit is contained in:
Éric Lemoine
2012-09-27 15:16:14 +02:00
parent dd425ff922
commit d2f9ebae41
4 changed files with 64 additions and 8 deletions
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17
src/ol/interaction/mousewheelzoom.js
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@@ -9,8 +9,15 @@ goog.require('ol.MapBrowserEvent');
/**
* @constructor
* @extends {ol.interaction.Interaction}
* @param {number} delta The zoom delta applied on each mousewheel.
*/
ol.interaction.MouseWheelZoom = function() {
ol.interaction.MouseWheelZoom = function(delta) {
/**
* @private
* @type {number}
*/
this.delta_ = delta;
goog.base(this);
};
goog.inherits(ol.interaction.MouseWheelZoom, ol.interaction.Interaction);
@@ -28,12 +35,8 @@ ol.interaction.MouseWheelZoom.prototype.handleMapBrowserEvent =
mapBrowserEvent.browserEvent;
goog.asserts.assert(mouseWheelEvent instanceof goog.events.MouseWheelEvent);
var anchor = mapBrowserEvent.getCoordinate();
var oldResolution = map.getResolution();
var factor = Math.exp(Math.log(2) / 4);
if (mouseWheelEvent.deltaY < 0) {
factor = 1 / factor;
}
map.zoomToResolution(oldResolution * factor, anchor);
var delta = mouseWheelEvent.deltaY < 0 ? this.delta_ : -this.delta_;
map.zoom(delta, anchor);
mapBrowserEvent.preventDefault();
mouseWheelEvent.preventDefault();
}