3948913bfc
has been done in the NaturalDocs branch back to trunk. Thanks to everyone who helped out in making this happen. (I could list people, but the list would be long, and I'm already mentally on vacation.) git-svn-id: http://svn.openlayers.org/trunk/openlayers@3545 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
76 lines
2.4 KiB
JavaScript
76 lines
2.4 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
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* for the 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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* 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.create();
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OpenLayers.Control.DragPan.prototype =
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OpenLayers.Class.inherit( 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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* Method: draw
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* Creates a Drag handler, using <OpenLayers.Control.PanMap.panMap> and
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* <OpenLayers.Control.PanMap.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, "up": this.panMapDone } );
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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 up position
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*/
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panMap: function (xy) {
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var deltaX = this.handler.start.x - xy.x;
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var deltaY = this.handler.start.y - xy.y;
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var size = this.map.getSize();
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var newXY = new OpenLayers.Pixel(size.w / 2 + deltaX,
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size.h / 2 + deltaY);
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var newCenter = this.map.getLonLatFromViewPortPx( newXY );
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this.map.setCenter(newCenter, null, true);
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// this assumes xy won't be changed inside Handler.Drag
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// a safe bet for now, and saves us the extra call to clone().
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this.handler.start = xy;
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},
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/**
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* Method: panMapDone
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*
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* Parameters:
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* xy - {<OpenLayers.Pixel>} Pixel of the up position
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*/
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panMapDone: function (xy) {
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var deltaX = this.handler.start.x - xy.x;
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var deltaY = this.handler.start.y - xy.y;
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var size = this.map.getSize();
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var newXY = new OpenLayers.Pixel(size.w / 2 + deltaX,
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size.h / 2 + deltaY);
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var newCenter = this.map.getLonLatFromViewPortPx( newXY );
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this.map.setCenter(newCenter, null, false);
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// this assumes xy won't be changed inside Handler.Drag
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// a safe bet for now, and saves us the extra call to clone().
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this.handler.start = xy;
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Control.DragPan"
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});
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