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fpga_is_fu |
var svgdoc;
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var svgNS = "http://www.w3.org/2000/svg";
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var xlinkNS = "http://www.w3.org/2000/xlink/namespace/";
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var myMapApp = new mapApp();
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var myMainMap;
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function init(evt) {
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svgdoc = evt.target.ownerDocument;
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myMapApp.resetFactors();
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// mapWidth, the minimal zoomValue, the maximal zoomValue, and a zoomStep value (in our case 60% of the previous view).
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myMainMap = new map("mainMap",912,100,1000,0.6);
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//set constraints to draggable rect in reference map
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}
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//holds data on window size
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function mapApp() {
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}
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//holds data on map
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function map(mapName,origWidth,minZoom,maxZoom,zoomFact) {
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var mapSVG = svgdoc.getElementById(mapName);
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this.mapName = mapName;
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this.origWidth = origWidth;
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this.minZoom = minZoom;
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this.maxZoom = maxZoom;
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this.zoomFact = zoomFact;
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this.pixXOffset = parseFloat(mapSVG.getAttributeNS(null,"x"));
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this.pixYOffset = parseFloat(mapSVG.getAttributeNS(null,"y"));
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viewBoxArray = mapSVG.getAttributeNS(null,"viewBox").split(" ");
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this.curxOrig = parseFloat(viewBoxArray[0]);
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this.curyOrig = parseFloat(viewBoxArray[1]);
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this.curWidth = parseFloat(viewBoxArray[2]);
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this.curHeight = parseFloat(viewBoxArray[3]);
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this.pixWidth = parseFloat(mapSVG.getAttributeNS(null,"width"));
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this.pixHeight = parseFloat(mapSVG.getAttributeNS(null,"height"));
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this.pixXOrig = parseFloat(mapSVG.getAttributeNS(null,"x"));
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this.pixYOrig = parseFloat(mapSVG.getAttributeNS(null,"y"));
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this.pixSize = this.curWidth / this.pixWidth;
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this.zoomVal = this.origWidth / this.curWidth * 100;
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}
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//calculate ratio and offset values of app window
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mapApp.prototype.resetFactors = function() {
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var svgroot = svgdoc.documentElement;
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if (!svgroot.getScreenCTM) {
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//case for ASV3 and Corel
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var viewBoxArray = svgroot.getAttributeNS(null,"viewBox").split(" ");
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var myRatio = viewBoxArray[2]/viewBoxArray[3];
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if ((window.innerWidth/window.innerHeight) > myRatio) { //case window is more wide than myRatio
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this.scaleFactor = viewBoxArray[3] / window.innerHeight;
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}
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else { //case window is more tall than myRatio
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this.scaleFactor = viewBoxArray[2] / window.innerWidth;
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}
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this.offsetX = (window.innerWidth - viewBoxArray[2] * 1 / this.scaleFactor) / 2;
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this.offsetY = (window.innerHeight - viewBoxArray[3] * 1 / this.scaleFactor) / 2;
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}
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}
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mapApp.prototype.calcCoord = function(coordx,coordy) {
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var svgroot = svgdoc.documentElement;
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var coords = new Array();
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if (!svgroot.getScreenCTM) {
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//case ASV3 a. Corel
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coords["x"] = (coordx - this.offsetX) * this.scaleFactor;
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coords["y"] = (coordy - this.offsetY) * this.scaleFactor;
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}
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else {
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matrix=svgroot.getScreenCTM();
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coords["x"]= matrix.inverse().a*coordx+matrix.inverse().c*coordy+matrix.inverse().e;
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coords["y"]= matrix.inverse().b*coordx+matrix.inverse().d*coordy+matrix.inverse().f;
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}
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return coords;
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}
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//////////////////////////////////////////////////////////////////////////////////////////////
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//scrollable Map
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//////////////////////////////////////////////////////////////////////////////////////////////
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//make an element draggable with constraints
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function dragObj(dragId,constrXmin,constrXmax,constrYmin,constrYmax,refPoint) {
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this.dragId = dragId;
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this.constrXmin = constrXmin;
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this.constrXmax = constrXmax;
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this.constrYmin = constrYmin;
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this.constrYmax = constrYmax;
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this.refPoint = refPoint;
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this.status = "false";
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}
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dragObj.prototype.drag = function(evt) {
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//works only for rect and use-elements
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var myDragElement = evt.target;
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if (evt.type == "mousedown") {
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var coords = myMapApp.calcCoord(evt.clientX,evt.clientY);
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this.curX = coords["x"];
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this.curY = coords["y"];
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this.status = "true";
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}
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if (evt.type == "mousemove" && this.status == "true") {
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var coords = myMapApp.calcCoord(evt.clientX,evt.clientY);
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var newEvtX = coords["x"];
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var newEvtY = coords["y"];
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var bBox = myDragElement.getBBox();
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if (this.refPoint == "ul") {
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var toMoveX = bBox.x + newEvtX - this.curX;
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var toMoveY = bBox.y + newEvtY - this.curY;
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}
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else {
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//refPoint = center
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var toMoveX = bBox.x + bBox.width / 2 + newEvtX - this.curX;
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var toMoveY = bBox.y + bBox.height / 2 + newEvtY - this.curY;
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}
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if ((bBox.x + newEvtX - this.curX) < this.constrXmin) {
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if(this.refPoint == "ul") {
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toMoveX = this.constrXmin;
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}
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else {
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toMoveX = this.constrXmin + bBox.width / 2;
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}
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}
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if ((bBox.x + newEvtX - this.curX + bBox.width) > this.constrXmax) {
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if(this.refPoint == "ul") {
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toMoveX = this.constrXmax - bBox.width;
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}
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else {
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toMoveX = this.constrXmax - bBox.width / 2;
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}
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}
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if ((bBox.y + newEvtY - this.curY) < this.constrYmin) {
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if(this.refPoint == "ul") {
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toMoveY = this.constrYmin;
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}
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else {
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toMoveY = this.constrYmin + bBox.height / 2;
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}
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}
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if ((bBox.y + bBox.height + newEvtY - this.curY) > this.constrYmax) {
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if(this.refPoint == "ul") {
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toMoveY = this.constrYmax - bBox.height;
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}
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else {
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toMoveY = this.constrYmax - bBox.height / 2;
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}
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}
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myDragElement.setAttributeNS(null,"x",toMoveX);
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myDragElement.setAttributeNS(null,"y",toMoveY);
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this.curX = newEvtX;
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this.curY = newEvtY;
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}
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if (evt.type == "mouseup" || evt.type == "mouseout") {
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this.status = "false";
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}
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if (evt.type == "mouseup" || evt.type == "mouseout") {
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this.status = "false";
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}
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}
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