3ca974acec
svn merge sandbox/vector-2.4/@2307 sandbox/vector-2.4/@HEAD trunk/openlayers/ git-svn-id: http://svn.openlayers.org/trunk/openlayers@2803 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
92 lines
2.9 KiB
JavaScript
92 lines
2.9 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified BSD license.
|
|
* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
|
|
* for the full text of the license. */
|
|
|
|
|
|
/**
|
|
* Handler to draw a path on the map. Polygon is displayed on mouse down,
|
|
* moves on mouse move, and is finished on mouse up.
|
|
*
|
|
* @class
|
|
* @requires OpenLayers/Handler/Path.js
|
|
* @requires OpenLayers/Geometry/Polygon.js
|
|
*/
|
|
OpenLayers.Handler.Polygon = OpenLayers.Class.create();
|
|
OpenLayers.Handler.Polygon.prototype =
|
|
OpenLayers.Class.inherit(OpenLayers.Handler.Path, {
|
|
|
|
/**
|
|
* @type OpenLayers.Geometry.Polygon
|
|
* @private
|
|
*/
|
|
polygon: null,
|
|
|
|
/**
|
|
* @constructor
|
|
*
|
|
* @param {OpenLayers.Control} control
|
|
* @param {Array} callbacks An object with a 'done' property whos value is
|
|
* a function to be called when the path drawing is
|
|
* finished. The callback should expect to recieve a
|
|
* single argument, the polygon geometry.
|
|
* If the callbacks object contains a 'point'
|
|
* property, this function will be sent each point
|
|
* as they are added. If the callbacks object contains
|
|
* a 'cancel' property, this function will be called when
|
|
* the handler is deactivated while drawing. The cancel
|
|
* should expect to receive a geometry.
|
|
* @param {Object} options
|
|
*/
|
|
initialize: function(control, callbacks, options) {
|
|
OpenLayers.Handler.Path.prototype.initialize.apply(this, arguments);
|
|
},
|
|
|
|
/**
|
|
* Add temporary geometries
|
|
*/
|
|
createGeometry: function() {
|
|
this.polygon = new OpenLayers.Geometry.Polygon();
|
|
this.line = new OpenLayers.Geometry.LinearRing();
|
|
this.polygon.addComponent(this.line);
|
|
this.point = new OpenLayers.Geometry.Point();
|
|
},
|
|
|
|
/**
|
|
* Destroy temporary geometries
|
|
*/
|
|
destroyGeometry: function() {
|
|
this.polygon.destroy();
|
|
this.point.destroy();
|
|
},
|
|
|
|
/**
|
|
* Modify the existing geometry given the new point
|
|
*
|
|
*/
|
|
modifyGeometry: function() {
|
|
var index = this.line.components.length - 2;
|
|
this.line.components[index].setX(this.point.x);
|
|
this.line.components[index].setY(this.point.y);
|
|
},
|
|
|
|
/**
|
|
* Render geometries on the temporary layer.
|
|
*/
|
|
drawGeometry: function() {
|
|
this.layer.renderer.drawGeometry(this.polygon, this.style);
|
|
this.layer.renderer.drawGeometry(this.point, this.style);
|
|
},
|
|
|
|
/**
|
|
* Return a clone of the relevant geometry.
|
|
*
|
|
* @type OpenLayers.Geometry.Polygon
|
|
*/
|
|
geometryClone: function() {
|
|
return this.polygon.clone();
|
|
},
|
|
|
|
/** @final @type String */
|
|
CLASS_NAME: "OpenLayers.Handler.Polygon"
|
|
});
|