supermap.is.mapcontrol.js

地理信息系统方面的开发源码

// 功能：			Ajax MapControl 类 
// 最后修改时间：	2006-05-25 
//========================================================================== 

SuperMap.IS.MapControl=function(container,params){var av=null;var referViewBounds=null;var referScale=0;var referViewer=null;var mapBounds=null;var ch="";var fi="png";var cz="http://localhost/mapHandler";var bu=0;var ab=5;var ez=15;var gk=15;var lt="images/spacer.gif";var k=256;var gj=1;var gi=2;var dy=11;var jn=20;var gw=this;var ay=true;var a=new SuperMap.IS.MapParam();var ae=new SuperMap.IS.MapParam();var fd=1;var kl=0,kk=0,dx=0,dt=0;var o=new Array();var bn=null;var ap=new Array();var x11=0,w=0;var aa=0,z=0;var bl=0,bk=0,cd=0,cc=0;var j=0,ad=0;var ke=false;var ci=false;var ls=0,lr=0;var ak=false;var aj=0;var bi=false;var da=0;var dh=0,dg=0;var en=null,eo=null;var em=null;var bc=null;var bp=null;var d=null;var gb=null;var r=null;var el=null;var bh=new Array();var ja=false;var i1=document.createElement("div");var bo=document.createElement("input");bo.id="kbInput";this.container=container;this.mapDiv=i1;var ai=new Array();var ax=new Array();var q=new Array();var m=new Array();var dr=128;var dz=false;var ha=false;this.Init=function(){window.curMapControl=gw;if(params.imageFormat){fi=params.imageFormat;};if(params.mapHandler){cz=params.mapHandler;};if(params.mapName){ch=params.mapName;};if(params.mapScales){av=params.mapScales;};if(params.useImageBuffer){dz=params.useImageBuffer;};gb=new mo();gb.Init();if(!ha){aq("onerror",new EventArguments(null,"地图初始化失败，请检查地图名是否正确，MapHandler 是否已正确配置，远程服务是否已启动。"));return false;};cu();if(dx<100){container.style.width="100px";}if(dt<100){container.style.height="100px";};cu();container.style.overflow="hidden";container.style.padding="0px";container.style.margin="0px";i1.style.position="relative";i1.style.padding="0px";i1.style.margin="0px";i1.style.zIndex=1;container.appendChild(i1);var ga=bo.style;ga.position="absolute";ga.top=(kk+dt/2)+"px";ga.left=(kl+dx/2)+"px";ga.width="0px";ga.height="0px";ga.padding="0px";ga.margin="0px";ga.border="0px solid white";ga.zIndex=-1;ga=null;container.appendChild(bo);if(!params.fixedView){bc=new SuperMap.IS.ZoomInAction();bc.Init(gw);bp=new SuperMap.IS.PanAction();bp.Init(gw);d=bp;container.attachEvent("onmousedown",gv);container.attachEvent("onmouseup",it);container.attachEvent("onmousemove",gu);container.attachEvent("onmousewheel",bv);container.attachEvent("ondblclick",hq);container.attachEvent("oncontextmenu",fk);container.attachEvent("onclick",ki);bo.attachEvent("onkeydown",iu);bo.attachEvent("onkeyup",kj);if(window.addEventListener&&navigator.product&&navigator.product=="Gecko"){container.addEventListener("DOMMouseScroll",bv,false);};bu=k;};if(params.buffer!=undefined&&params.buffer!=null){bu=params.buffer;};if(params.x&&params.y&&params.zoomLevel){try{var la=new SuperMap.IS.MapParam(ch,av);la.SetZoomLevel(eval(params.zoomLevel));la.SetMapCenter(new SuperMap.IS.MapCoord(params.x,params.y));t(la);}catch(e){dw();};}else{dw();};if(!params.disableLogo){em=new mg(container);em.Init();};_EnableVML();};this.Destroy=function(){window.curMapControl=null;ha=false;while(m.length>0){var ed=m[0];delete m[ed];m.shift();}m=null;if(!params.fixedView){container.detachEvent("onmousedown",gv);container.detachEvent("onmouseup",it);container.detachEvent("onmousemove",gu);container.detachEvent("onmousewheel",bv);container.detachEvent("ondblclick",hq);container.detachEvent("oncontextmenu",fk);container.detachEvent("onclick",ki);bo.detachEvent("onkeydown",iu);bo.detachEvent("onkeyup",kj);};bo=null;while(o.length>0){var bb=o.pop();bb.ao();}o=null;while(ap.length>0){ap.pop().ao();}ap=null;if(em){em.Destroy();em=null;};if(gb){gb.Destroy();gb=null;};if(bc){bc.Destroy();bc=null;};if(bp){bp.Destroy();bp=null;};if(d){d.Destroy();d=null;};fx();ai=null;fw();ax=null;eg();q=null;iv();this.i1=null;this.container=null;i1=container=gw=null;};function cu(){kl=_GetElementX(container);kk=_GetElementY(container);if(container.style.borderLeftWidth){kl+=parseInt(container.style.borderLeftWidth);};if(container.style.borderTopWidth){kk+=parseInt(container.style.borderTopWidth);};dx=container.offsetWidth;dt=container.offsetHeight;};function dw(){var ln=new SuperMap.IS.MapParam(ch,av);ln.SetMapCenter(new SuperMap.IS.MapCoord(0.0,0.0));ln.SetZoomLevel(1);t(ln);};function hk(){return a.mapCenter.x;};function hj(){return a.mapCenter.y;};function gg(){return a.pixelCenter.x;};function gf(){return a.pixelCenter.y;};function fh(cn){a.mapCenter=r.PixelToMapCoord(a.pixelCenter,a.zoomLevel);if(cn){ae.Copy(a);}};function ia(){return a.zoomLevel;};function ba(io){var ly=r.MapCoordToPixel(io,a.zoomLevel);ly.x-=x11+aa;ly.y-=w+z;return ly;};function ck(ly){var mv=new SuperMap.IS.PixelCoord(ly.x+x11+aa,ly.y+w+z);var io=r.PixelToMapCoord(mv,a.zoomLevel);return io;};function as(ms,dv){return r.PixelToMapDistance(ms,dv);};function ks(){return new SuperMap.IS.PixelRect(0,0,dx,dt);};function lc(width,height){if((!width||width<=0)&&(!height||height<=0)){return;};if(width&&width>0){dx=width;}if(height&&height>0){dt=height;};container.style.width=dx+"px";container.style.height=dt+"px";gt(a);if(em){em.er();};aq("onresize");};function eu(ec){ay=ec;};function fg(){return ay;};function iy(ec){ja=ec;for(var h=0;h<o.length;h++){o[h].Debug(ec);}};function ff(ln,ag){du(ln,ag,0,0);};function du(ln,ag,ac,p){var hr=r.PixelToMapCoord(new SuperMap.IS.PixelCoord(ac+ln.pixelCenter.x,p+ln.pixelCenter.y),ln.zoomLevel);if(ja){window.status="oldX:"+hr.x;};var ar=false;if(hr.x<ag.leftBottom.x){hr.x=ag.leftBottom.x;ar=true;};if(hr.y<ag.leftBottom.y){hr.y=ag.leftBottom.y;ar=true;};if(hr.x>ag.rightTop.x){hr.x=ag.rightTop.x;ar=true;};if(hr.y>ag.rightTop.y){hr.y=ag.rightTop.y;ar=true;};if(ar){var iz=r.MapCoordToPixel(hr,ln.zoomLevel);ln.SetPixelCenter(iz);}else{ln.SetPixelCenter(new 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