334fb4c2ed
git-svn-id: http://svn.openlayers.org/trunk/openlayers@214 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
59 lines
2.0 KiB
JavaScript
59 lines
2.0 KiB
JavaScript
OpenLayers.Control.KeyboardDefaults = Class.create();
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OpenLayers.Control.KeyboardDefaults.prototype =
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Object.extend( new OpenLayers.Control(), {
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initialize: function() {
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OpenLayers.Control.prototype.initialize.apply(this, arguments);
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},
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draw: function() {
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Event.observe(document, 'keypress', this.defaultKeyDown.bind(this.map));
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},
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/**
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* @param {Event} evt
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*/
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defaultKeyDown: function (evt) {
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var i = 0;
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switch(evt.keyCode) {
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case Event.KEY_LEFT:
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var resolution = this.getResolution();
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var center = this.getCenter();
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this.setCenter(
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new OpenLayers.LonLat(center.lon - (resolution * 50),
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center.lat)
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);
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Event.stop(evt);
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break;
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case Event.KEY_RIGHT:
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var resolution = this.getResolution();
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var center = this.getCenter();
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this.setCenter(
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new OpenLayers.LonLat(center.lon + (resolution * 50),
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center.lat)
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);
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Event.stop(evt);
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break;
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case Event.KEY_UP:
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var resolution = this.getResolution();
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var center = this.getCenter();
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this.setCenter(
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new OpenLayers.LonLat(center.lon,
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center.lat + (resolution * 50))
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);
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Event.stop(evt);
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break;
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case Event.KEY_DOWN:
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var resolution = this.getResolution();
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var center = this.getCenter();
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this.setCenter(
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new OpenLayers.LonLat(center.lon,
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center.lat - (resolution * 50))
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);
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Event.stop(evt);
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break;
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}
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}
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});
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