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<h2>kaOverlay.js</h2>
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<h4>Summary</h4>
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No overview generated for 'kaOverlay.js'<BR/><BR/>
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<pre class="sourceview"><span class="comment">/**********************************************************************
*
* $Id: overview-summary-kaOverlay.js.html,v 1.1 2006/03/15 15:56:58 pspencer Exp $
*
* purpose: an Object Overlay class
*
* author: Lorenzo Becchi & Andrea Cappugi, Piergiorgio Navone
*
* TODO:
* - many things ...
*
**********************************************************************
*
* Copyright (c) 2005, Lorenzo Becchi & Andrea Cappugi
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
**********************************************************************/</span>
<span class="reserved">function</span> kaOverlay( oKaMap )
{
kaTool.apply( <span class="reserved">this</span>, [oKaMap] );
<span class="reserved">this</span>.name = <span class="literal">'kaOverlay'</span>;
<span class="reserved">this</span>.XMLloaded = false;
<span class="reserved">this</span>.overlayLayers= new Array();
<span class="reserved">this</span>.output;
<span class="reserved">this</span>.sessionId=<span class="literal">""</span>;
<span class="reserved">this</span>.topLeft;
<span class="reserved">this</span>.imgWidth;
<span class="reserved">this</span>.imgHeight;
<span class="reserved">this</span>.imageMap=<span class="literal">""</span>;
<span class="reserved">for</span> (var p in kaTool.<span class="reserved">prototype</span>)
{
<span class="reserved">if</span> (!kaOverlay.<span class="reserved">prototype</span>[p])
kaOverlay.<span class="reserved">prototype</span>[p]= kaTool.<span class="reserved">prototype</span>[p];
}
<span class="comment">// The list of overlay points</span>
<span class="reserved">this</span>.ovrObjects = new Array();
<span class="comment">// Register for events</span>
<span class="reserved">this</span>.kaMap.registerForEvent( KAMAP_SCALE_CHANGED, <span class="reserved">this</span>, <span class="reserved">this</span>.scaleChanged );
<span class="reserved">this</span>.kaMap.registerForEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>, <span class="reserved">this</span>.reCenter );
}
<span class="comment">/**
* Act when scale change
*/</span>
kaOverlay.<span class="reserved">prototype</span>.scaleChanged = <span class="reserved">function</span>( eventID, mapName ) {
<span class="comment">// if (this.ovrObjects == null) return;</span>
<span class="comment">// for (var i=0; i < this.ovrObjects.length; i++) {</span>
<span class="comment">// this.ovrObjects[i].rescale();</span>
<span class="comment">// }</span>
<span class="comment">// this.draw();</span>
<span class="reserved">this</span>.reCenter();
}
kaOverlay.<span class="reserved">prototype</span>.reCenter = <span class="reserved">function</span>() {
<span class="reserved">if</span>(getRawObject(<span class="literal">'theInsideLayer'</span>) && getRawObject(<span class="literal">'imageMapLayer'</span>) && getRawObject(<span class="literal">'mapCodeDiv'</span>)){
var imageMapLayer = getRawObject(<span class="literal">'imageMapLayer'</span>);
var mapCodeDiv = getRawObject(<span class="literal">'mapCodeDiv'</span>);
var defaultExtents = myKaMap.getCurrentMap().defaultExtents;
var currentExtents = myKaMap.getCurrentMap().currentExtents;
var geoExtents = myKaMap.getGeoExtents();
var insideLayerLeft = myKaMap.theInsideLayer.style.left;
var insideLayerTop = myKaMap.theInsideLayer.style.top;
var xOrigin = myKaMap.xOrigin;
var yOrigin = myKaMap.yOrigin;
var topLeft = myKaMap.geoToPix( defaultExtents[0], defaultExtents[3] );
topLeft[0] = topLeft[0] - xOrigin;
topLeft[1] = topLeft[1] - yOrigin;
<span class="reserved">this</span>.topLeft = topLeft;
<span class="comment">// alert(topLeft[0]+"><"+imageMapLayer.style.left);</span>
<span class="comment">// alert(topLeft[1]+"><"+imageMapLayer.style.top);</span>
var bottomRight = myKaMap.geoToPix( defaultExtents[2], defaultExtents[1] );
bottomRight[0] = bottomRight[0] - xOrigin;
bottomRight[1] = bottomRight[1] - yOrigin;
var imgWidth = bottomRight[0] - topLeft[0];
<span class="reserved">this</span>.imgWidth = imgWidth;
var imgHeight = bottomRight[1] - topLeft[1];
<span class="reserved">this</span>.imgHeight = imgHeight;
imageMapLayer.style.width = <span class="reserved">this</span>.imgWidth+<span class="literal">"px"</span>;
imageMapLayer.style.height = <span class="reserved">this</span>.imgHeight+<span class="literal">"px"</span>;
imageMapLayer.style.top = <span class="reserved">this</span>.topLeft[1]+<span class="literal">"px"</span>;
imageMapLayer.style.left = <span class="reserved">this</span>.topLeft[0]+<span class="literal">"px"</span>;
mapCodeDiv.style.width = <span class="reserved">this</span>.imgWidth+<span class="literal">"px"</span>;
mapCodeDiv.style.height = <span class="reserved">this</span>.imgHeight+<span class="literal">"px"</span>;
}
}
<span class="comment">/**
* Load XML from the server and update the overlay.
*
* xml_url URL of th XML with points to plot
*/</span>
kaOverlay.<span class="reserved">prototype</span>.loadXml = <span class="reserved">function</span>(string) {
<span class="reserved">this</span>.output= string;
<span class="reserved">this</span>.XMLloaded = true;
eval(string);
<span class="comment">// alert(this.sessionId);</span>
<span class="reserved">this</span>.draw();
}
kaOverlay.<span class="reserved">prototype</span>.init = <span class="reserved">function</span>(url){
<span class="comment">//calcolo la posizione degli oggetti</span>
var defaultExtents = myKaMap.getCurrentMap().defaultExtents;
var currentExtents = myKaMap.getCurrentMap().currentExtents;
var mapName = myKaMap.getCurrentMap().name;
var geoExtents = myKaMap.getGeoExtents();
var insideLayerLeft = myKaMap.theInsideLayer.style.left;
var insideLayerTop = myKaMap.theInsideLayer.style.top;
var xOrigin = myKaMap.xOrigin;
var yOrigin = myKaMap.yOrigin;
var topLeft = myKaMap.geoToPix( defaultExtents[0], defaultExtents[3] );
topLeft[0] = topLeft[0] - xOrigin;
topLeft[1] = topLeft[1] - yOrigin;
<span class="reserved">this</span>.topLeft = topLeft;
var bottomRight = myKaMap.geoToPix( defaultExtents[2], defaultExtents[1] );
bottomRight[0] = bottomRight[0] - xOrigin;
bottomRight[1] = bottomRight[1] - yOrigin;
var imgWidth = bottomRight[0] - topLeft[0];
<span class="reserved">this</span>.imgWidth = imgWidth;
var imgHeight = bottomRight[1] - topLeft[1];
<span class="reserved">this</span>.imgHeight = imgHeight;
<span class="comment">//Chiamo il layer</span>
var xmlUrl = <span class="reserved">this</span>.kaMap.server+<span class="literal">"XMLOverlay/xmlgetpolygon.php"</span>;
var stringaUrl =
<span class="literal">"XMLOverlay/overlay.php?xmlUrl="</span>+xmlUrl+<span class="literal">"&mapName="</span>+mapName+<span class="literal">"&sessionId="</span>+<span class="reserved">this</span>.sessionId+<span class="literal">"&imgWidth="</span>+imgWidth+<span class="literal">"&imgHeight="</span>+imgHeight;
<span class="comment">// stringaUrl = 'XMLOverlay/overlay.php';</span>
<span class="comment">// alert (stringaUrl);</span>
call(stringaUrl,<span class="reserved">this</span>,<span class="reserved">this</span>.loadXml);
}
<span class="comment">/**
* Load XML from the server and update the overlay.
*
* xml_url URL of th XML with points to plot
*/</span>
kaOverlay.<span class="reserved">prototype</span>.draw = <span class="reserved">function</span>() {
<span class="comment">// aggiungi i layer al viewport</span>
<span class="reserved">for</span>(i=0;i<<span class="reserved">this</span>.overlayLayers.length;i++){
myKaMap.addMapLayer( <span class="reserved">this</span>.overlayLayers[i] );
}
<span class="comment">//disegna livello con mappa</span>
var insideLayerDomObj = getRawObject(<span class="literal">'theInsideLayer'</span>);
div = document.createElement( <span class="literal">'div'</span> );
div.id = <span class="literal">'imageMapLayer'</span>;
div.className = <span class="literal">'imageMapLayer'</span>;
div.setAttribute(<span class="literal">'style'</span>,<span class="literal">'position:absolute;z-index:100;background-color:transparent;'</span>);
image = document.createElement( <span class="literal">'img'</span> );
image.src = <span class="literal">'images/transparent_pix.png'</span>;
<span class="comment">// image.src = 'images/tool_zoomin_1.png';</span>
image.id = <span class="literal">'imageMapImage'</span>;
image.setAttribute(<span class="literal">'border'</span>,<span class="literal">'0'</span>);
image.setAttribute(<span class="literal">'style'</span>, <span class="literal">'position:absolute;z-index:2;width:'</span>+<span class="reserved">this</span>.imgWidth+<span class="literal">'px;height:'</span>+<span class="reserved">this</span>.imgHeight+<span class="literal">'px;'</span>);
image.setAttribute(<span class="literal">'usemap'</span>,<span class="literal">'#overlayMap'</span>);
<span class="comment">/*
<MAP name="map1">
<Area href="index.html" shape="rect" coords="0,0,118,28" alt="home page">
<Area href="contactus.html" shape="rect" coords="118,0,184,28" alt="contact us">
</MAP>
*/</span>
<span class="comment">//create element</span>
mapCodeDiv = document.createElement( <span class="literal">'div'</span> );
mapCodeDiv.id = <span class="literal">'mapCodeDiv'</span>;
mapCodeDiv.setAttribute(<span class="literal">'style'</span>, <span class="literal">'position:absolute;z-index:2;left:0;top:0;'</span>);
div.appendChild( mapCodeDiv );
div.appendChild( image );
insideLayerDomObj.appendChild( div );
<span class="reserved">this</span>.reCenter();
<span class="comment">//insert image map code in the apposite div</span>
<span class="comment">// getRawObject('mapCodeDiv').innerHTML = this.imageMap;</span>
getRawObject(<span class="literal">'mapCodeDiv'</span>).innerHTML = <span class="reserved">this</span>.output + <span class="reserved">this</span>.imageMap;
<span class="comment">// getRawObject('mapCodeDiv').innerHTML = fakeMap;</span>
}
kaOverlay.<span class="reserved">prototype</span>.clear = <span class="reserved">function</span>(){
<span class="reserved">this</span>.XMLloaded = false;
<span class="reserved">this</span>.output = null;
<span class="reserved">this</span>.sessionId= null;
<span class="reserved">if</span>(getRawObject(<span class="literal">'theInsideLayer'</span>) && getRawObject(<span class="literal">'imageMapLayer'</span>))getRawObject(<span class="literal">'theInsideLayer'</span>).removeChild(getRawObject(<span class="literal">'imageMapLayer'</span>));
<span class="reserved">for</span>(i=0;i<<span class="reserved">this</span>.overlayLayers.length;i++){
myKaMap.removeMapLayer( <span class="reserved">this</span>.overlayLayers[i].name );
}
<span class="reserved">this</span>.overlayLayers= new Array();
<span class="comment">// myKaMap.triggerEvent(KAMAP_LAYERS_CHANGED,myKaMap.currentMap);</span>
}
kaOverlay.<span class="reserved">prototype</span>.myOnClick = <span class="reserved">function</span>() {
alert(<span class="literal">'testo'</span>);
}
kaOverlay.<span class="reserved">prototype</span>.showInfo = <span class="reserved">function</span>(obj) {
<span class="comment">// alert(obj.mionome);// <- non funge</span>
var string = <span class="literal">"id: "</span>+ obj.id + <span class="literal">" | alt: "</span>+ obj.alt + <span class="literal">" | title: "</span>+ obj.title;
alert( string );
}
</pre>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Wed Mar 15 10:50:59 2006</div>
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