49 lines
1.2 KiB
JavaScript
49 lines
1.2 KiB
JavaScript
// FIXME works for View2D only
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goog.provide('ol.interaction.DblClickZoom');
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goog.require('ol.MapBrowserEvent');
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goog.require('ol.MapBrowserEvent.EventType');
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goog.require('ol.View2D');
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goog.require('ol.interaction.Interaction');
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/**
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* @constructor
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* @extends {ol.interaction.Interaction}
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* @param {number} delta The zoom delta applied on each double click.
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*/
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ol.interaction.DblClickZoom = function(delta) {
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/**
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* @private
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* @type {number}
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*/
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this.delta_ = delta;
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goog.base(this);
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};
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goog.inherits(ol.interaction.DblClickZoom, ol.interaction.Interaction);
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/**
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* @inheritDoc
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*/
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ol.interaction.DblClickZoom.prototype.handleMapBrowserEvent =
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function(mapBrowserEvent) {
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var browserEvent = mapBrowserEvent.browserEvent;
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if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.DBLCLICK &&
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mapBrowserEvent.isMouseActionButton()) {
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var map = mapBrowserEvent.map;
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var anchor = mapBrowserEvent.getCoordinate();
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var delta = mapBrowserEvent.browserEvent.shiftKey ?
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-this.delta_ : this.delta_;
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// FIXME works for View2D only
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var view = map.getView();
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goog.asserts.assert(view instanceof ol.View2D);
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view.zoom(map, delta, anchor);
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mapBrowserEvent.preventDefault();
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browserEvent.preventDefault();
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}
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};
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