aimsdhtml.js

arcmis是webgis网站的掩码

// aimsDHTML.js
/*
*  JavaScript template file for ArcIMS HTML Viewer
*		dependent on aimsXML.js, ArcIMSparam.js, aimsCommon.js, aimsMap.js,
*		aimsLayers.js
*/

aimsDHTMLPresent=true;


/*
***************************************************************************************

DHTML layer functions

***************************************************************************************
*/

// Create a DHTML layer
function createLayer(name, inleft, intop, width, height, visible, content) {
	  var layer;
	    document.writeln('<div id="' + name + '" style="position:absolute; overflow:hidden; left:' + inleft + 'px; top:' + intop + 'px; width:' + width + 'px; height:' + height + 'px;' + '; z-index:1; visibility:' + (visible ? 'visible;' : 'hidden;') +  '">');
	    document.writeln(content);
	    document.writeln('</div>');
}

// get the layer object called "name"
function getLayer(name) {
	var theObj = document.getElementById(name);
	if (theObj!=null) {
		return theObj.style
	 }  else {
	    return(null);
	 }
}
		
// get the layer object called "name" if in OverviewFrame
function getOVLayer(name) {
	if (parent.OverviewFrame!=null) {
		var theObj = parent.OverviewFrame.document.getElementById(name);
		if (theObj!=null) {
			return theObj.style
		 }  else {
		    return(null);
		}
	} else
		return getLayer(name);
}

function isVisible(name) {
	  var layer = getLayer(name);
	  if (isNav && layer.visibility == "show")
	    return(true);
	  if (isIE && layer.visibility == "visible")
	    return(true);
	  return(false);
}


// move layer to x,y
function moveLayer(name, x, y) {		
  	var layer = getLayer(name);		
    layer.left = x + "px";
   	layer.top  = y + "px";
}

// set layer background color
function setLayerBackgroundColor(name, color) {		
  	var layer = getLayer(name);		
	layer.backgroundColor = color;
}

// toggle layer to invisible
function hideLayer(name) {		
  	var layer = getLayer(name);		
  	layer.visibility = "hidden";
}

// toggle layer to visible
function showLayer(name) {		
  	var layer = getLayer(name);		
  	layer.visibility = "visible";
}

// toggle Overview layer to visible - if in OverviewFrame
function showOVLayer(name) {		
  	var layer = getOVLayer(name);		
  	layer.visibility = "visible";
}

// toggle Overview layer to invisible - if in OverviewFrame
function hideOVLayer(name) {		
  	var layer = getOVLayer(name);		
  	layer.visibility = "hidden";
}

// clip layer display to clipleft, cliptip, clipright, clipbottom
	// Not working with Mozilla Milestone 12 (Nav5)
function clipLayer2(name, clipleft, cliptop, clipright, clipbottom) {		
	  var layer = getLayer(name);		
	  layer.clip = 'rect(' + cliptop + ' ' +  clipright + ' ' + clipbottom + ' ' + clipleft +')';
}

function clipLayer(name, clipleft, cliptop, clipright, clipbottom) {		
	  var layer = getLayer(name);
	  var newWidth = clipright - clipleft;
		var newHeight = clipbottom - cliptop;
		layer.height = newHeight;
		layer.width	= newWidth;
		layer.top	= cliptop  + "px";
		layer.left	= clipleft + "px";

}

// clip layer in OverviewFrame
function clipOVLayer(name, clipleft, cliptop, clipright, clipbottom) {		
	var layer = getLayer(name);
	if (parent.OverviewFrame!=null) layer = getOVLayer(name);
	if ((clipright.isNaN) || (clipleft.isNaN) || (cliptop.isNaN) || (clipbottom.isNaN)) {
		layer.visibility = "hidden";
	} else {
		var newWidth = clipright - clipleft;
		var newHeight = clipbottom - cliptop;
		if ((newWidth<=0) || (newHeight<=0)) {
			layer.visibility = "hidden";
		} else {
			layer.height = newHeight;
			layer.width	= newWidth;
			layer.top	= cliptop  + "px";
			layer.left	= clipleft + "px";
			layer.visibility = "visible";
		}
	}

}

// replace layer's content with new content
	// not working with Mozilla Milestone 12 (Nav5)
function replaceLayerContent(name, content) {
	var theObj = document.getElementById(name);
	if (theObj!=null) {	  
		theObj.innerHTML = content;	
	}
}


// toggle Overview Map display
function toggleOVMap() {
	if (imsURL!="") {
		ovIsVisible = !ovIsVisible;
		if (ovIsVisible) {
			putExtentOnOVMap();
			showLayer("ovLayer");
			showLayer("ovShadow");
			
		} else {
			hideLayer("ovLayer");
			hideLayer("ovShadow");
			
			hideLayer("zoomOVBoxTop");
			hideLayer("zoomOVBoxLeft");
			hideLayer("zoomOVBoxRight");
			hideLayer("zoomOVBoxBottom");
			
		}
		var layer = getLayer("theTop");
		if (layer!=null) layer.cursor = theCursor;
		
	} else {
		alert(msgList[45]);
	}
	
}

// plot extent box on overview map - only for Overview if in OverviewFrame
function putExtentOnOVMap() {
	var ovXincre = fullOVWidth / i2Width;
	var ovYincre = fullOVHeight / i2Height;
	var vleft = (eLeft - fullOVLeft) / ovXincre + ovBorderWidth;
	var vright = (eRight - fullOVLeft) / ovXincre + ovBorderWidth;
	var vtop = (fullOVTop - eTop) / ovYincre + ovBorderWidth;
	var vbottom = (fullOVTop - eBottom) / ovYincre + ovBorderWidth;
	if (vright>i2Width+ovBorderWidth) vright = i2Width;
	if (vbottom>i2Height+ovBorderWidth) vbottom = i2Height;
	//if (!isNav4) {
		vleft = vleft + ovHspc;
		vright = vright + ovHspc;
		vtop = vtop + ovVspc;
		vbottom = vbottom + ovVspc;
	//}
	if (eTop>fullOVBottom) {
		clipOVLayer("zoomOVBoxTop",vleft,vtop-ovExtentBoxSize,vright+1,vtop);
		showOVLayer("zoomOVBoxTop");
	} else {
		hideOVLayer("zoomOVBoxTop");		
	}
	if (eLeft<fullOVRight) {
		clipOVLayer("zoomOVBoxLeft",vleft-ovExtentBoxSize,vtop-ovExtentBoxSize,vleft,vbottom);
		showOVLayer("zoomOVBoxLeft");
	} else {
		hideOVLayer("zoomOVBoxLeft");
	}
	if (eRight>fullOVLeft) {
		clipOVLayer("zoomOVBoxRight",vright,vtop-ovExtentBoxSize,vright+ovExtentBoxSize,vbottom);
		showOVLayer("zoomOVBoxRight");
	} else {
		hideOVLayer("zoomOVBoxRight");
	} 
	if (eBottom<fullOVTop) {
		clipOVLayer("zoomOVBoxBottom",vleft,vbottom-ovExtentBoxSize,vright+1,vbottom);
		showOVLayer("zoomOVBoxBottom");
	} else {
		hideOVLayer("zoomOVBoxBottom");

	}

}

function boxIt(theLeft,theTop,theRight,theBottom) {

		//if (!isNav4) {
			theTop = theTop + vspc;
			theBottom = theBottom + vspc;
			theLeft = theLeft + hspc;
			theRight = theRight + hspc;
		//}
		clipLayer("zoomBoxTop",theLeft,theTop,theRight,theTop+ovBoxSize);
		clipLayer("zoomBoxLeft",theLeft,theTop,theLeft+ovBoxSize,theBottom);
		clipLayer("zoomBoxRight",theRight-ovBoxSize,theTop,theRight,theBottom);
		clipLayer("zoomBoxBottom",theLeft,theBottom-ovBoxSize,theRight,theBottom);	
		showLayer("zoomBoxTop");
		showLayer("zoomBoxLeft");
		showLayer("zoomBoxRight");
		showLayer("zoomBoxBottom");

}