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

aimsNavigationPresent=true;
//var separator = ",";  // use comma as 000's separator
//var decpoint = ".";  // use period as decimal point
//var percent = "%";
//var currency = "$";  // use dollar sign for currency



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

Map Navigation functions - Zoom , Pan, etc.

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

// convert mouse click xy's into map coordinates
function getMapXY(xIn,yIn) {
		mouseX = xIn;
		pixelX = xDistance / iWidth;
		mapX = pixelX * mouseX + eLeft;
		mouseY = iHeight - yIn;
		pixelY = yDistance / iHeight;
		mapY = pixelY * mouseY + eBottom;
}

function getImageXY(e) {
	if (isNav) {
		mouseX=e.pageX;
		mouseY=e.pageY;
	} else {
		mouseX=event.clientX + document.body.scrollLeft;
		mouseY=event.clientY + document.body.scrollTop;
	}
	// subtract offsets from page left and top
	mouseX = mouseX-hspc;
	mouseY = mouseY-vspc;

}	

function getOVImageXY(e) {
	if (isNav) {
		mouseX=e.pageX;
		mouseY=e.pageY;
	} else {
		mouseX=event.clientX + document.body.scrollLeft;
		mouseY=event.clientY + document.body.scrollTop;
	}
	// subtract offsets from page left and top
	mouseX = mouseX-ovHspc;
	mouseY = mouseY-ovVspc;
	
}


// get coordinates on ov map and reset display
function ovMapClick(x,y) {
	var ovWidth = i2Width;
	var ovHeight = i2Height;
	var ovXincre = fullOVWidth / ovWidth;
	var ovYincre = fullOVHeight / ovHeight;
	var ovX = x;
	var ovY = ovHeight - y;
	var ovmapX = ovX * ovXincre + fullOVLeft;
	var ovmapY = ovY * ovYincre + fullOVBottom;
	saveLastExtent();
	eLeft = ovmapX - xHalf;
	eRight = ovmapX + xHalf;
	eTop = ovmapY + yHalf;
	eBottom = ovmapY - yHalf;
	//alert(ovmapX + "," +  ovmapY + "\nLeft:" + fullLeft + "\nTop:" + fullTop + "\nRight:" + fullRight + "\nBottom:" + fullBottom);
	//var theString = writeXML();
	sendMapXML();
	
}

// get click on OVmap and move display there
function ovMap2Click(e) {
	getOVImageXY(e);
	mouseY = mouseY - ovBorderWidth;
	zooming=false;
	panning=false;
	selectBox=false;
	ovMapClick(mouseX,mouseY);
}


// zoom in around mouse click
function zoomin(e) {
	getMapXY(mouseX,mouseY);
	var tempLeft=lastLeft;
	var tempRight=lastRight;
	var tempTop=lastTop;
	var tempBottom=lastBottom;
	saveLastExtent();

	eLeft = mapX - (xHalf/zoomFactor);
	eRight = mapX + (xHalf/zoomFactor);
	eTop = mapY + (yHalf/zoomFactor);
	eBottom = mapY - (yHalf/zoomFactor);
	
	sendMapXML();
}

// zoom out from mouse click
function zoomout(e) {
	getMapXY(mouseX,mouseY);
	var tempLeft=lastLeft;
	var tempRight=lastRight;
	var tempTop=lastTop;
	var tempBottom=lastBottom;
	saveLastExtent();

	eLeft = mapX - (xDistance*zoomFactor/2);
	eRight = mapX + (xDistance*zoomFactor/2);
	eTop = mapY + (yDistance*zoomFactor/2);
	eBottom = mapY - (yDistance*zoomFactor/2);
	if (enforceFullExtent) {
		if ((eRight-eLeft)>fullWidth) {
			eLeft = fullLeft;
			eRight = fullRight;
			eTop = fullTop;
			eBottom = fullBottom;
			lastLeft=tempLeft;
			lastRight=tempRight;
			lastTop=tempTop;
			lastBottom=tempBottom;
		}
	}
	
	sendMapXML();
}	

// get the coords at mouse position
function getMouse(e) {
	window.status="";
	getImageXY(e);
	if (isIE) {
		if ((hasOVMap) && (ovIsVisible) && (ovMapIsLayer)) {
			
		 	if ((mouseX<i2Width+2) && (mouseY<i2Height)) {
		 	
				document.all.theTop.style.cursor = "default";
		 	} else {
		 		document.all.theTop.style.cursor = theCursor;
		 	}
		}
	}
	//if ((mouseX < (i2Width + ovBoxSize)) && (mouseY < (i2Height + ovBoxSize))) {onOVArea=true} else {onOVArea=false}
	if ((mouseX>iWidth) || (mouseY>iHeight) || (mouseX<=0) ||(mouseY<=0) || ((hasOVMap) && (ovIsVisible) && (mouseX<i2Width+ovBoxSize) && (mouseY<i2Height+ovBoxSize) && (ovMapIsLayer))) {
		chkMouseUp(e);
	} else {
		mouseStuff();
	  
	}
	//if ((panning) || (zooming) || (selectBox))
		return false;
	//else 
	//	return true;
}

function mouseStuff() {
	if ((zooming) || (selectBox)) {
		x2=mouseX;
		y2=mouseY;
		setClip();
	} else if (panning) {
		x2=mouseX;
		y2=mouseY;
		panMouse();	
	}
	pixelX = xDistance / iWidth;
	mapX = pixelX * mouseX + eLeft;
	var theY = iHeight - mouseY;
	pixelY = yDistance / iHeight;
	mapY = pixelY * theY + eBottom;
	
	if (toolMode==20) {
		calcDistance(mapX,mapY);	
	} 
	else if (showXYs) {
		var u = Math.pow(10,numDecimals);
		var uX = parseInt(mapX * u + (5/10)) / u
		var uY= parseInt(mapY * u + (5/10)) / u
            // added by Lee
            var PixPerInch = 97.6925;
            var MyRFScale = (xDistance * 12) / (iWidth / PixPerInch) ;
            var MyEngScale = MyRFScale / 12;
 //           MyRFScale = formatNumber(MyRFScale,"#.00");
 //           MyEngScale = formatNumber(MyEngScale,"#.00");
		var mouseString = msgList[52] + uX + " , " + uY + " -- " + msgList[53] + mouseX + " , " + mouseY;	
//		if (showScalePercent) mouseString = mouseString + " -- " + msgList[54] + mapScaleFactor;
//		if (showScalePercent) mouseString = mouseString + " -- " + xDistance + " " + iWidth + " " + mapScaleFactor + " " + "RF Scale 1:" + MyRFScale + " or 1 inch=" + MyEngScale + " feet";
		if (showScalePercent) mouseString = mouseString + " -- " + "RF Scale 1:" + MyRFScale + " or 1 inch=" + MyEngScale + " feet";
		//if (onOVArea) {mouseString += " -- On OV Map Area [" + i2Width + "x" + i2Height + "]"} else {mouseString += " -- Off OV Map Area [" + i2Width + "x" + i2Height + "]"}
		window.status = mouseString;
	}

}
// start zoom in.... box displayed
function startZoomBox(e) {
	moveLayer("theMap",hspc,vspc);
	getImageXY(e);	
	// keep it within the MapImage
	if ((mouseX<iWidth) && (mouseY<iHeight)) {
		if (zooming) {
			stopZoomBox(e);
		} else {
			x1=mouseX;
			y1=mouseY
			x2=x1+1;
			y2=y1+1;
			zleft=x1;
			ztop=y1;
			zbottom=y1;
			zright=x1
			
			boxIt(x1,y1,x2,y2);
			zooming=true;
			/*
			if (isNav4) {
				showLayer("zoomBoxTop");
				showLayer("zoomBoxLeft");
				showLayer("zoomBoxRight");
				showLayer("zoomBoxBottom");
			} else {
				showLayer("zoomBox");
			}
			*/
		}
	}
	return false;
	
}

// stop zoom box display... zoom in
function stopZoomBox(e) {
	zooming=false;
	//if (isNav4) {
		hideLayer("zoomBoxTop");
		hideLayer("zoomBoxLeft");
		hideLayer("zoomBoxRight");
		hideLayer("zoomBoxBottom");
	//} else {
	//	hideLayer("zoomBox");
	//}
	if ((zright <zleft+2) && (zbottom < ztop+2)) {
		zoomin(e);
	} else {
		var tempLeft=lastLeft;
		var tempRight=lastRight;
		var tempTop=lastTop;
		var tempBottom=lastBottom;
		saveLastExtent();
		pixelX = xDistance / iWidth;
		var theY = iHeight - ztop;
		pixelY = yDistance / iHeight;
		eTop = pixelY * theY + eBottom;
		eRight = pixelX * zright + eLeft;
		eLeft = pixelX * zleft + eLeft;
		theY = iHeight - zbottom;
		pixelY = yDistance / iHeight;
		eBottom = pixelY * theY + eBottom;
		window.scrollTo(0,0);
	
		//var theString = writeXML();
		sendMapXML();
	}
	return true;

}

// start zoom out... box displayed
function startZoomOutBox(e) {
	moveLayer("theMap",hspc,vspc);
	getImageXY(e);
	// keep it within the MapImage
	if ((mouseX<iWidth) && (mouseY<iHeight)) {
		
		if (zooming) {
			stopZoomOutBox(e);
		} else {
			x1=mouseX;
			y1=mouseY
			x2=x1+1;
			y2=y1+1;
			zleft=x1;
			ztop=y1;
			zbottom=y1;
			zright=x1
			boxIt(x1,y1,x2,y2);
			zooming=true;
			/*
			if (isNav4) {
				showLayer("zoomBoxTop");
				showLayer("zoomBoxLeft");
				showLayer("zoomBoxRight");
				showLayer("zoomBoxBottom");
			} else {
				showLayer("zoomBox");
			}
			*/
		}
	//} else {
	//	if (zooming) stopZoomOutBox(e);
	}
	return false;
	
}

// stop zoom out box. . . zoom out
function stopZoomOutBox(e) {
	zooming=false;
	//if (isNav4) {
		hideLayer("zoomBoxTop");
		hideLayer("zoomBoxLeft");
		hideLayer("zoomBoxRight");
		hideLayer("zoomBoxBottom");
	//} else {
	//	hideLayer("zoomBox");
	//}
	if ((zright <zleft+2) && (zbottom < ztop+2)) {
		zoomout(e);
	} else {	
		var tempLeft=eLeft;
		var tempRight=eRight;
		var tempTop=eTop;
		var tempBottom=eBottom;
		saveLastExtent();
		var zWidth = Math.abs(zright-zleft);
		var zHeight = Math.abs(ztop-zbottom);
		var xRatio = iWidth / zWidth;
		var yRatio = iHeight / zHeight;
		var xAdd = xRatio * xDistance / 2;
		var yAdd = yRatio * yDistance / 2;
		eLeft = eLeft - xAdd;
		eRight = eRight + xAdd;
		eTop = eTop + yAdd;
		eBottom = eBottom - yAdd;
		window.scrollTo(0,0);
		if (enforceFullExtent) {
			if ((eRight-eLeft)>fullWidth) {
				eLeft = fullLeft;
				eRight = fullRight;
				eTop = fullTop;
				eBottom = fullBottom;
				lastLeft=tempLeft;
				lastRight=tempRight;
				lastTop=tempTop;
				lastBottom=tempBottom;
			}
		}
		//var theString = writeXML();
		sendMapXML();
	}
	return true;
}

// clip zoom box layer to mouse coords
function setClip() {	
	var tempX=x1;
	var tempY=y1;
	if (x1>x2) {
		zright=x1;
		zleft=x2;
	} else {
		zleft=x1;
		zright=x2;
	}
	if (y1>y2) {
		zbottom=y1;
		ztop=y2;
	} else {
		ztop=y1;
		zbottom=y2;
	}
	
	if ((x1 != x2) && (y1 != y2)) {
		//clipLayer("zoomBox",zleft,ztop,zright,zbottom);
		boxIt(zleft,ztop,zright,zbottom);
		/*
		clipLayer("zoomBoxTop",zleft,ztop,zright,ztop+ovBoxSize);
		clipLayer("zoomBoxLeft",zleft,ztop,zleft+ovBoxSize,zbottom);
		clipLayer("zoomBoxRight",zright-ovBoxSize,ztop,zright,zbottom);
		clipLayer("zoomBoxBottom",zleft,zbottom-ovBoxSize,zright,zbottom);
		*/
	}
	//return false;
}

// start pan.... image will move
function startPan(e) {
	moveLayer("theMap",hspc,vspc);

	getImageXY(e);
	// keep it within the MapImage
	if ((mouseX<iWidth) && (mouseY<iHeight)) {
		if (panning) {
			stopPan(e);
		} else {
			x1=mouseX;
			y1=mouseY
			x2=x1+1;
			y2=y1+1;
			panning=true;
		}
	}
	return false;

}

// stop moving image.... pan 
function stopPan(e) {
	window.scrollTo(0,0);
	panning=false;
	var tempLeft=eLeft;
	var tempRight=eRight;
	var tempTop=eTop;
	var tempBottom=eBottom;
	//saveLastExtent();
	var ixOffset = x2-x1;
	var iyOffset = y1-y2;
	pixelX = xDistance / iWidth;
	var theY = iHeight - ztop;
	pixelY = yDistance / iHeight;
	var xOffset = pixelX * ixOffset;
	var yOffset = pixelY * iyOffset;
	eTop = eTop - yOffset;
	eRight = eRight - xOffset;
	eLeft = eLeft - xOffset;
	eBottom = eBottom - yOffset;
	
	checkFullExtent();
	lastLeft = tempLeft;
	lastRight = tempRight;
	lastTop = tempTop;
	lastBottom = tempBottom;
	hideLayer("theMap");
	if (hasLayer("theMapClicks")) {
		document.theClickImage.src = blankImage;

	}
	//var theString = writeXML();
	sendMapXML();
	//window.setTimeout('moveLayer("theMap",hspc,vspc);',1000);
	//window.setTimeout('showLayer("theMap");',1500);
	//window.setTimeout('clipLayer("theMap",0,0,iWidth,iHeight);',1500);
	
	return true;
	
}

// move map image with mouse
function panMouse() {
	var xMove = x2-x1;
	var yMove = y2-y1;
	var cLeft = -xMove;
	var cTop = -yMove;
	var cRight = iWidth;
	var cBottom = iHeight;
	if (xMove>0) {
		cLeft = 0;
		cRight = iWidth - xMove;
	}
	if (yMove>0) {
		cTop = 0;
		cBottom = iHeight - yMove;
	}
	clipLayer2("theMap",cLeft,cTop,cRight,cBottom);
	moveLayer("theMap",xMove+hspc,yMove+vspc);
	if (hasLayer("theMapClicks")) {
		clipLayer2("theMapClicks",cLeft,cTop,cRight,cBottom);
		moveLayer("theMapClicks",xMove+hspc,yMove+vspc);

	}
	//return false;
}

// pan to mouse click
function pan(e) {
	getMapXY(mouseX,mouseY);
	var tempLeft=lastLeft;
	var tempRight=lastRight;
	var tempTop=lastTop;
	var tempBottom=lastBottom;
	saveLastExtent();

	eLeft = mapX - xHalf;
	eRight = mapX + xHalf;
	eTop = mapY + yHalf;
	eBottom = mapY - yHalf;
	//var theString = writeXML();
	sendMapXML();
}	


function setZoomColor() {
	//if (isNav4) {
		setLayerBackgroundColor("zoomBoxTop", zoomBoxColor);
		setLayerBackgroundColor("zoomBoxLeft", zoomBoxColor);
		setLayerBackgroundColor("zoomBoxRight", zoomBoxColor);
		setLayerBackgroundColor("zoomBoxBottom", zoomBoxColor);
	
		setLayerBackgroundColor("zoomOVBoxTop", zoomBoxColor);
		setLayerBackgroundColor("zoomOVBoxLeft", zoomBoxColor);
		setLayerBackgroundColor("zoomOVBoxRight", zoomBoxColor);
		setLayerBackgroundColor("zoomOVBoxBottom", zoomBoxColor);
	//} else {
	//	var theDiv = getLayer("zoomBox");
	//	theDiv.borderColor = zoomBoxColor;
		//setLayerBackgroundColor("ovBox", zoomBoxColor);
		
	//}
}

//  function formatNumber(number, format, print) {  // use: formatNumber(number, "format")
//    if (print) document.write("formatNumber(" + number + ", \"" + format + "\")<br>");

//    if (number - 0 != number) return null;  // if number is NaN return null
//   var useSeparator = format.indexOf(separator) != -1;  // use separators in number
//    var usePercent = format.indexOf(percent) != -1;  // convert output to percentage
//    var useCurrency = format.indexOf(currency) != -1;  // use currency format
//    var isNegative = (number < 0);
//    number = Math.abs (number);
//    if (usePercent) number *= 100;
//    format = strip(format, separator + percent + currency);  // remove key characters
//    number = "" + number;  // convert number input to string

     // split input value into LHS and RHS using decpoint as divider
//    var dec = number.indexOf(decpoint) != -1;
//    var nleftEnd = (dec) ? number.substring(0, number.indexOf(".")) : number;
//    var nrightEnd = (dec) ? number.substring(number.indexOf(".") + 1) : "";

     // split format string into LHS and RHS using decpoint as divider
//    dec = format.indexOf(decpoint) != -1;
//    var sleftEnd = (dec) ? format.substring(0, format.indexOf(".")) : format;
//    var srightEnd = (dec) ? format.substring(format.indexOf(".") + 1) : "";

     // adjust decimal places by cropping or adding zeros to LHS of number
//    if (srightEnd.length < nrightEnd.length) {
//      var nextChar = nrightEnd.charAt(srightEnd.length) - 0;
//      nrightEnd = nrightEnd.substring(0, srightEnd.length);
//      if (nextChar >= 5) nrightEnd = "" + ((nrightEnd - 0) + 1);  // round up

 // patch provided by Patti Marcoux 1999/08/06
//      while (srightEnd.length > nrightEnd.length) {
//        nrightEnd = "0" + nrightEnd;
//      }

//      if (srightEnd.length < nrightEnd.length) {
//        nrightEnd = nrightEnd.substring(1);
//        nleftEnd = (nleftEnd - 0) + 1;
//      }
//    } else {
//      for (var i=nrightEnd.length; srightEnd.length > nrightEnd.length; i++) {
//        if (srightEnd.charAt(i) == "0") nrightEnd += "0";  // append zero to RHS of number
//        else break;
//      }
//    }

//    // adjust leading zeros
//    sleftEnd = strip(sleftEnd, "#");  // remove hashes from LHS of format
//    while (sleftEnd.length > nleftEnd.length) {
//      nleftEnd = "0" + nleftEnd;  // prepend zero to LHS of number
//    }

//    if (useSeparator) nleftEnd = separate(nleftEnd, separator);  // add separator
//    var output = nleftEnd + ((nrightEnd != "") ? "." + nrightEnd : "");  // combine parts
//    output = ((useCurrency) ? currency : "") + output + ((usePercent) ? percent : "");
//    if (isNegative) {
      // patch suggested by Tom Denn 25/4/2001
//      output = (useCurrency) ? "(" + output + ")" : "-" + output;
//    }
//    return output;
//  }

//  function strip(input, chars) {  // strip all characters in 'chars' from input
//    var output = "";  // initialise output string
//    for (var i=0; i < input.length; i++)
//      if (chars.indexOf(input.charAt(i)) == -1)
//        output += input.charAt(i);
//    return output;
//  }

//  function separate(input, separator) {  // format input using 'separator' to mark 000's
//    input = "" + input;
//    var output = "";  // initialise output string
//    for (var i=0; i < input.length; i++) {
//      if (i != 0 && (input.length - i) % 3 == 0) output += separator;
//      output += input.charAt(i);
//    }
//    return output;
//  }