eb417ff61c
git-svn-id: http://svn.openlayers.org/trunk/openlayers@7612 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
86 lines
2.0 KiB
JavaScript
86 lines
2.0 KiB
JavaScript
/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
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* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Control.js
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* @requires OpenLayers/Handler/Drag.js
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*/
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/**
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* Class: OpenLayers.Control.DragPan
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* DragPan control.
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*
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* Inherits from:
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* - <OpenLayers.Control>
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*/
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OpenLayers.Control.DragPan = OpenLayers.Class(OpenLayers.Control, {
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/**
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* Property: type
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* {OpenLayers.Control.TYPES}
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*/
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type: OpenLayers.Control.TYPE_TOOL,
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/**
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* Property: panned
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* {Boolean} The map moved.
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*/
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panned: false,
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/**
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* Property: interval
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* {Integer} The number of milliseconds that should ellapse before
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* panning the map again. Set this to increase dragging performance.
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* Defaults to 25 milliseconds.
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*/
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interval: 25,
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/**
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* Method: draw
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* Creates a Drag handler, using <panMap> and
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* <panMapDone> as callbacks.
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*/
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draw: function() {
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this.handler = new OpenLayers.Handler.Drag(this, {
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"move": this.panMap,
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"done": this.panMapDone
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}, {
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interval: this.interval
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}
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);
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},
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/**
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* Method: panMap
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*
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* Parameters:
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* xy - {<OpenLayers.Pixel>} Pixel of the mouse position
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*/
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panMap: function(xy) {
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this.panned = true;
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this.map.pan(
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this.handler.last.x - xy.x,
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this.handler.last.y - xy.y,
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{dragging: this.handler.dragging, animate: false}
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);
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},
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/**
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* Method: panMapDone
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* Finish the panning operation. Only call setCenter (through <panMap>)
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* if the map has actually been moved.
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*
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* Parameters:
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* xy - {<OpenLayers.Pixel>} Pixel of the mouse position
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*/
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panMapDone: function(xy) {
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if(this.panned) {
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this.panMap(xy);
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this.panned = false;
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}
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},
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CLASS_NAME: "OpenLayers.Control.DragPan"
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});
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