a5a63727f5
git-svn-id: http://svn.openlayers.org/branches/openlayers/2.2@1786 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
129 lines
3.8 KiB
JavaScript
129 lines
3.8 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/release-license.txt
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* for the full text of the license. */
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/**
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* @class
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*
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* @requires OpenLayers/Popup.js
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*/
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OpenLayers.Popup.Anchored = OpenLayers.Class.create();
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OpenLayers.Popup.Anchored.prototype =
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OpenLayers.Class.inherit( OpenLayers.Popup, {
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/** "lr", "ll", "tr", "tl" - relative position of the popup.
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* @type String */
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relativePosition: null,
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/** Object which must have expose a 'size' (OpenLayers.Size) and
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* 'offset' (OpenLayers.Pixel)
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* @type Object */
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anchor: null,
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/**
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* @constructor
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*
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* @param {String} id
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* @param {OpenLayers.LonLat} lonlat
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* @param {OpenLayers.Size} size
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* @param {String} contentHTML
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* @param {Object} anchor Object which must expose a
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* - 'size' (OpenLayers.Size) and
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* - 'offset' (OpenLayers.Pixel)
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* (this is generally an OpenLayers.Icon)
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* @param {Boolean} closeBox
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*/
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initialize:function(id, lonlat, size, contentHTML, anchor, closeBox) {
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var newArguments = new Array(id, lonlat, size, contentHTML, closeBox);
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OpenLayers.Popup.prototype.initialize.apply(this, newArguments);
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this.anchor = (anchor != null) ? anchor
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: { size: new OpenLayers.Size(0,0),
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offset: new OpenLayers.Pixel(0,0)};
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},
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/**
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* @param {OpenLayers.Pixel} px
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*
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* @returns Reference to a div that contains the drawn popup
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* @type DOMElement
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*/
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draw: function(px) {
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if (px == null) {
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if ((this.lonlat != null) && (this.map != null)) {
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px = this.map.getLayerPxFromLonLat(this.lonlat);
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}
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}
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//calculate relative position
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this.relativePosition = this.calculateRelativePosition(px);
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return OpenLayers.Popup.prototype.draw.apply(this, arguments);
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},
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/**
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* @private
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*
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* @param {OpenLayers.Pixel} px
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*
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* @returns The relative position ("br" "tr" "tl "bl") at which the popup
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* should be placed
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* @type String
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*/
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calculateRelativePosition:function(px) {
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var lonlat = this.map.getLonLatFromLayerPx(px);
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var extent = this.map.getExtent();
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var quadrant = extent.determineQuadrant(lonlat);
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return OpenLayers.Bounds.oppositeQuadrant(quadrant);
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},
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/**
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* @param {OpenLayers.Pixel} px
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*/
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moveTo: function(px) {
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var newPx = this.calculateNewPx(px);
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var newArguments = new Array(newPx);
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OpenLayers.Popup.prototype.moveTo.apply(this, newArguments);
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},
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/**
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* @param {OpenLayers.Size} size
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*/
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setSize:function(size) {
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OpenLayers.Popup.prototype.setSize.apply(this, arguments);
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if ((this.lonlat) && (this.map)) {
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var px = this.map.getLayerPxFromLonLat(this.lonlat);
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this.moveTo(px);
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}
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},
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/**
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* @private
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*
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* @param {OpenLayers.Pixel} px
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*
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* @returns The the new px position of the popup on the screen
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* relative to the passed-in px
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* @type OpenLayers.Pixel
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*/
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calculateNewPx:function(px) {
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var newPx = px.offset(this.anchor.offset);
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var top = (this.relativePosition.charAt(0) == 't');
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newPx.y += (top) ? -this.size.h : this.anchor.size.h;
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var left = (this.relativePosition.charAt(1) == 'l');
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newPx.x += (left) ? -this.size.w : this.anchor.size.w;
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return newPx;
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},
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CLASS_NAME: "OpenLayers.Popup.Anchored"
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});
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