// 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;

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

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;
	
	/*inizio correzione baco sulla limitazione della finastra visibile :
		senza il seguente controllo Gedeone, nel caso si utilizzi la
		funzione di zoom, permette di superare la limitazione della finestra
		visibile impostata dai parametri limitleft, limittop...
	*/
	if (enforceFullExtent) {
		if (eLeft < limitLeft) {
			eLeft = limitLeft;
			eRight = eLeft + xDistance;
		}
		if (eTop > limitTop) {
			eTop = limitTop;	
			eBottom = eTop - yDistance;
		}	
		if (eRight > limitRight) {
			eRight = limitRight;
			eLeft = eRight - xDistance;
		}
		if (eBottom < limitBottom) {
			eBottom = limitBottom;	
			eTop = eBottom + yDistance;
		}	
	}
	/*fine correzione baco sulla limitazione della finastra visibile*/
	
	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);
	saveLastExtent();

	eLeft = mapX - (xHalf/zoomFactor);
	eRight = mapX + (xHalf/zoomFactor);
	eTop = mapY + (yHalf/zoomFactor);
	eBottom = mapY - (yHalf/zoomFactor);
	
	/*inizio correzione baco sulla limitazione della finastra visibile :
		senza il seguente controllo Gedeone, nel caso si utilizzi la
		funzione di zoom, permette di superare la limitazione della finestra
		visibile impostata dai parametri limitleft, limittop...
	*/
	if (enforceFullExtent) {
		if (eLeft < limitLeft) {
			eLeft = limitLeft;
			eRight = eLeft + xDistance;
		}
		if (eTop > limitTop) {
			eTop = limitTop;	
			eBottom = eTop - yDistance;
		}	
		if (eRight > limitRight) {
			eRight = limitRight;
			eLeft = eRight - xDistance;
		}
		if (eBottom < limitBottom) {
			eBottom = limitBottom;	
			eTop = eBottom + yDistance;
		}	
	}
	/*fine correzione baco sulla limitazione della finastra visibile*/
	
	sendMapXML();
}

// zoom out from mouse click
function zoomout(e) {
	getMapXY(mouseX,mouseY);
    //Inizio LastZoom : LAZ 
	//var tempLeft=lastLeft;
	//var tempRight=lastRight;
	//var tempTop=lastTop;
	//var tempBottom=lastBottom;
    //Fine LastZoom : LAZ 
	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;
			//Inizio LastZoom : LAZ 
			//lastLeft=tempLeft;
			//lastRight=tempRight;
			//lastTop=tempTop;
			//lastBottom=tempBottom;
			//Fine LastZoom : LAZ 
		}
	}
	
	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
		var mouseString = msgList[52] + uX + " , " + uY + " -- " + msgList[53] + mouseX + " , " + mouseY;	
		if (showScalePercent) mouseString = mouseString + " -- " + msgList[54] + mapScaleFactor;
		//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 {
		//Inizio LastZoom : LAZ 
		//var tempLeft=lastLeft;
		//var tempRight=lastRight;
		//var tempTop=lastTop;
		//var tempBottom=lastBottom;
		//Fine LastZoom : LAZ 
		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 {	
		//Inizio LastZoom : LAZ 
		//var tempLeft=eLeft;
		//var tempRight=eRight;
		//var tempTop=eTop;
		//var tempBottom=eBottom;
		//Fine LastZoom : LAZ 
		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;
				//Inizio LastZoom : LAZ 
				//lastLeft=tempLeft;
				//lastRight=tempRight;
				//lastTop=tempTop;
				//lastBottom=tempBottom;
				//Fine LastZoom : LAZ 
			}
		}
		//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;
	//Inizio LastZoom : LAZ 
	//var tempLeft=eLeft;
	//var tempRight=eRight;
	//var tempTop=eTop;
	//var tempBottom=eBottom;
	saveLastExtent();
	//Fine LastZoom : LAZ 
	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;
	if (enforceFullExtent) {
		if (eLeft < limitLeft) {
			eLeft = limitLeft;
			eRight = eLeft + xDistance;
		}
		if (eTop > limitTop) {
			eTop = limitTop;	
			eBottom = eTop - yDistance;
		}	
		if (eRight > limitRight) {
			eRight = limitRight;
			eLeft = eRight - xDistance;
		}
		if (eBottom < limitBottom) {
			eBottom = limitBottom;	
			eTop = eBottom + yDistance;
		}	
	}
	//Inizio  LastZoom : LAZ
	//lastLeft = tempLeft;
	//lastRight = tempRight;
	//lastTop = tempTop;
	//lastBottom = tempBottom;
	//Fine  LastZoom : LAZ
	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);
    //Inizio  LastZoom : LAZ 
	//var tempLeft=lastLeft;
	//var tempRight=lastRight;
	//var tempTop=lastTop;
	//var tempBottom=lastBottom;
   //Fine  LastZoom : LAZ 
	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);
		
	//}
}