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hgv.js
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hgv.js
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"use strict";
var glycanviewer = {
// The "global variables" are declared here
// It is not necessary to do so
// It is just a reminder of I can use this "things" directly
firstInit: true,
// A list of div in HTML page. save the trouble of document.getElement blah blah
div_root: 0,
div_header: 0,
div_img: 0,
div_network: 0,
div_navi: 0,
// Parameters from HTML file
para: 0,
// A portion of json file that will be used to build the network
component: 0,
// Things related to the network
rootname: 0,
topoonly: 0,
rootlevel: 0,
displaynodes: 0,
verticalSpace: 0,
horizontalSpace: 0,
// Image cache
resourceStatus: {},
nodeImg: {},
imageWidth: [],
imageHeight: [],
// Constant
brokenImageSubstituentBase64: "",
init: function (parameters) {
if (this.IEQuestionMark())
{
this.compatibleDraw(parameters);
}
else {
this.para = this.paraCheck(parameters);
this.allocateDiv();
this.dataPreProcessing();
}
},
// Check the integrity and legitimacy of the parameters
paraCheck : function (para){
var checked = para;
if (!para.display.naviOption.size){
checked.display.naviOption.size = 0.15;
}
if (!para.display.naviOption.postion){
checked.display.naviOption.postion = 4;
}
if (![1,2,3,4].includes(para.display.naviOption.postion)){
checked.display.naviOption.postion = 4;
}
if (para.essentials.useGlyTouCanAsImageSource){
if (!["extended","normal","compact"].includes(para.essentials.GlyTouCanImagePara.style)){
checked.essentials.GlyTouCanImagePara.style = "extended";
}
if (!["png","jpg"].includes(para.essentials.GlyTouCanImagePara.format)){
checked.essentials.GlyTouCanImagePara.format = "png";
}
if (!["cfg","cfgbw","uoxf","uoxf-color","cfg-uoxf","iupac"].includes(para.essentials.GlyTouCanImagePara.notation)){
checked.essentials.GlyTouCanImagePara.notation = "cfg";
}
}
if (![1,2,3,4].includes(para.display.orientation)){
checked.display.orientation = 1;
}
return checked
},
// Allocate the DIV
allocateDiv: function () {
var thisLib = this;
// This variable stands for the prefix of the div id.
var id = this.para.essentials.div_ID + "_glycanviewer_";
//Locate the div && pre allocate space for each gadgets
this.div_root = document.getElementById(thisLib.para.essentials.div_ID);
while (thisLib.div_root.firstChild){
thisLib.div_root.removeChild(thisLib.div_root.firstChild);
}
this.div_root.style.overflow = "hidden";
this.div_header = document.createElement("div");
this.div_header.setAttribute("id",id+"header");
this.div_realStuff = document.createElement("div");
this.div_realStuff.setAttribute("id",id+"realStuff");
this.div_realStuff.style = "width: 100%; height: 100%; position: relative; left: 0; top: 0;";
this.div_network = document.createElement("div");
this.div_network.setAttribute("id",id+"container");
this.div_network.style = "width: 100%; height: 100%;position: relative; left: 0; top: 0;";
this.div_navi = document.createElement("div");
this.div_navi.setAttribute("id",id+"navi");
//this.div_navi.style = "position: absolute; left: 0; top: 0; float: right; width: 100%; height: 100%";
this.div_contextMenu = document.createElement("div");
this.div_contextMenu.setAttribute("id",id+"contextMenu");
this.div_realStuff.appendChild(this.div_network);
this.div_realStuff.appendChild(this.div_navi);
this.div_realStuff.appendChild(this.div_contextMenu);
this.div_root.appendChild(this.div_header);
this.div_root.appendChild(this.div_realStuff);
},
dataPreProcessing: function(){
var thisLib = this;
this.component = this.para.essentials.component;
var topoonly = this.para.essentials.topoOnly;
var component = this.component;
var rootname = component.root;
this.rootname = rootname;
if (this.para.essentials.viewRoot){
rootname = this.para.essentials.viewRoot;
}
this.levelCalculation(component, rootname);
this.network = new vis.Network(thisLib.div_network);
// After all images are cached (allow some of them not found), the rest pipeline are proceed by resourceSync
this.cacheImage();
},
levelCalculation: function(component, rootname){
var rootlevel = 0;
var thisLevel = 0;
var thisLevelNodes = [ rootname ];
var nextLevelNodes = [];
var displaynodes = [];
// Change all nodes level to undefined
for (var node in component.nodes){
var a = component.nodes[node].level;
component.nodes[node].level = 1;
var b = component.nodes[node].level;
}
while (thisLevelNodes.length > 0){
for(var i=0; i < thisLevelNodes.length; i++){
var currentNode = thisLevelNodes[i];
var edgesOfCurrentNode = component.edges[currentNode];
if (edgesOfCurrentNode != undefined){
for (var currentEdgeIndex in edgesOfCurrentNode){
var currentEdge = edgesOfCurrentNode[currentEdgeIndex];
nextLevelNodes.push(currentEdge.to);
component.nodes[ currentNode ].level = thisLevel;
displaynodes[ currentNode ] = 1;
}
}
else{
component.nodes[ currentNode ].level = thisLevel;
displaynodes[ currentNode ] = 1;
}
//var debug = "Node: " +currentNode + " is set to level-" + thisLevel;
//console.log(debug);
}
thisLevelNodes = nextLevelNodes;
nextLevelNodes = [];
thisLevel += 1;
}
this.rootlevel = rootlevel;
this.displaynodes = displaynodes;
this.component = component;
},
getImageURL: function(acc){
var imgURL = "";
if (this.para.essentials.useGlyTouCanAsImageSource){
imgURL = "https://glytoucan.org/glycans/" + acc + "/image?";
imgURL += "style=" + this.para.essentials.GlyTouCanImagePara.style;
imgURL += "&format=" + this.para.essentials.GlyTouCanImagePara.format;
imgURL += "¬ation=" + this.para.essentials.GlyTouCanImagePara.notation;
}else {
imgURL = this.para.essentials.imgURL1 + acc + this.para.essentials.imgURL2;
}
return imgURL
},
cacheImage: function(){
var thisLib = this;
var component = this.component;
var nodes = component.nodes;
for (var node in component.nodes) {
var nodeAcc = component.nodes[node].name;
this.resourceStatus[nodeAcc] = false;
}
for (var node in component.nodes) {
var nodeContent = component.nodes[node];
var nodeAcc = component.nodes[node].name;
var imageURL = "";
if (nodeContent.alternativeImageURL){
imageURL = nodeContent.alternativeImageURL;
}
else {
imageURL = this.getImageURL(nodeAcc);
}
nodeContent.imageURL = imageURL;
var imgEle = document.createElement("img");
imgEle.name = nodeAcc;
imgEle.src = imageURL;
imgEle.onload = function(){
thisLib.imageHeight.push(this.height);
thisLib.imageWidth.push(this.width);
thisLib.resourceStatus[this.name] = true;
thisLib.resourceSync();
};
imgEle.onerror = function(){
// Do something while image can not be found?
thisLib.imageHeight.push(undefined);
thisLib.imageWidth.push(undefined);
thisLib.resourceStatus[this.name] = true;
thisLib.resourceSync();
};
}
},
resourceSync: function(){
var thisLib = this;
var proceed = true;
for (var key in this.resourceStatus){
if (!this.resourceStatus[key]){
proceed = false;
}
}
if (proceed){
this.displayTitle();
this.layoutCalculation();
var options = this.visOptionGenerate();
var data = this.createNodeAndEdges();
this.data = data;
this.options = options;
this.network.setOptions(options);
this.forceRedraw(true);
this.doubleClickEvent();
if (this.para.contextMenu.enable){
if (this.para.contextMenu.defaultMenu){
this.defaultContextMenu();
}
else{
this.customizedContextMenu();
}
}
}
},
displayTitle: function(){
var rootname = this.rootname;
var component = this.component;
if (this.para.display.enableTitle){
var header = document.createElement("h2");
header.style = "margin: 1px;";
this.div_header.appendChild(header);
header.innerHTML = rootname + " (" + component.mw + ") - " + "Level " + component.nodes[rootname].level;
}
},
layoutCalculation: function(){
var allWidth = this.imageWidth;
var allHeight = this.imageHeight;
allWidth.sort(function(a, b){return b-a});
allHeight.sort(function(a, b){return b-a});
var greatestWidth = allWidth[0];
var greatestHeight = allHeight[0];
// vertical space is the distance between 2 level
// horizontal space is the distance between the center of 2 image
var horizontalSpace, verticalSpace;
if (greatestWidth != undefined && greatestHeight != undefined ){
if ([2,4].includes(this.para.display.orientation)){
verticalSpace = greatestWidth * 1.3;
horizontalSpace = greatestHeight * 1.3 + 30; // Extra 35 is for the label
}
else{
horizontalSpace = greatestWidth * 1.05;
verticalSpace = greatestHeight * 1.3 + 30; // Extra 35 is for the label
}
}
else{
verticalSpace = 220;
horizontalSpace = 400;
}
// console.log(greatestHeight, greatestWidth);
// console.log(verticalSpace, horizontalSpace);
this.verticalSpace = verticalSpace;
this.horizontalSpace = horizontalSpace;
},
visOptionGenerate: function(){
var thisLib = this;
var option_template = {
layout: {
hierarchical: {
direction: 'UD',
enabled: true,
levelSeparation: thisLib.verticalSpace, // the default value is 150
nodeSpacing: thisLib.horizontalSpace // might be affected by physics engine, default value 100
}
},
manipulation: {
enabled: false,
initiallyActive: true,
addNode: false,
addEdge: function(edgeData,callback) {
console.log(JSON.stringify(edgeData,null,4));
var lvl = nodes._data[edgeData.from].level;
d3.values(edges._data).forEach(function (e) {
if ((e.to == edgeData.to) && (e.id != edgeData.id)) {
if (nodes._data[e.from].level > lvl) {
lvl = nodes._data[e.from].level;
}
}
});
nodes._data[edgeData.to].level = (lvl + 1);
callback(edgeData);
forceredraw(false);
},
editEdge: function(edgeData,callback) {
console.log(JSON.stringify(edgeData,null,4));
var lvl = nodes._data[edgeData.from].level;
d3.values(edges._data).forEach(function (e) {
if ((e.to == edgeData.to) && (e.id != edgeData.id)) {
if (nodes._data[e.from].level > lvl) {
lvl = nodes._data[e.from].level;
}
}
});
nodes._data[edgeData.to].level = (lvl + 1);
callback(edgeData);
forceredraw(false);
},
deleteEdge: function(edgeData,callback){
callback(edgeData);
forceredraw(false);
}
},
physics: {
enabled: false,
hierarchicalRepulsion: {
springConstant: 0.3,
nodeDistance: thisLib.horizontalSpace
}
},
nodes: {
borderWidth: 0,
borderWidthSelected: 2,
chosen: true,
color: {
border: '#FFFFFF',
background: '#FFFFFF',
highlight: {
border: '#2B7CE9',
background: '#FFFFFF'
},
hover: {
border: '#2B7CE9',
background: '#FFFFFF'
}
}
}
};
var orientationDict = {1:"UD", 2:"LR", 3:"DU", 4:"RL"};
var orientationValue = orientationDict[this.para.display.orientation];
option_template.layout.hierarchical.direction = orientationValue;
return option_template
},
createNodeAndEdges: function(){
var thisLib = this;
var component = this.component;
var rootlevel = this.rootlevel;
var displaynodes = this.displaynodes;
var nodes = new vis.DataSet();
d3.keys(component.nodes).forEach(function (k) {
var d = component.nodes[k];
//d.id = d.id;
//d.label = d.label;
d.level -= rootlevel;
d.shape = 'image';
d.id = d.name;
if (d.label){}
else{
d.label = d.name;
}
d.borderColor = "#FFFFFF";
d.shapeProperties = {
useBorderWithImage: true,
useImageSize: true
};
d.image = d.imageURL;
//d.brokenImage = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+ip1sAAAAASUVORK5CYII";
if (displaynodes[k] != 1) {
//d.hidden = true;
} else {
//d.hidden = false;
nodes.update(d);
}
});
var edges = new vis.DataSet();
d3.keys(component.edges).forEach(function (k) {
component.edges[k].forEach(function(e) {
e.arrows = 'middle';
if (e.type == 'equals') {
e.color = {color:'red'};
} else if (e.type == 'contains') {
e.color = {color: 'blue'};
}else{
e.color = {};
}
if ((e.to in displaynodes) && (e.from in displaynodes)){
edges.update(e);
}
});
});
this.nodes = nodes;
this.edges = edges;
// create a data set for network
var data = {
nodes: nodes,
edges: edges
};
return data
},
forceRedraw: function(init){
var thisLib = this;
thisLib.network.setData(thisLib.data);
function drawNavi(){
if (init){
thisLib.network.fit(thisLib.naviInitial());
}
else {
thisLib.naviInitial();
}
}
function temp(){
setTimeout(drawNavi,50);
}
if (thisLib.para.display.enableNavi ){
thisLib.network.once('afterDrawing', temp, false);
}
},
// *********************************************************
// ******* Function for interacting with the canvas ********
// *********************************************************
doubleClickEvent: function(){
var thisLib = this;
thisLib.network.on("doubleClick",zoomWhenDoubleClicked);
function zoomWhenDoubleClicked(data){
var selectnode = data.nodes;
var connectednode = [];
if (selectnode.length > 0){
connectednode = thisLib.network.getConnectedNodes(selectnode);
connectednode.push(selectnode);
}
if (connectednode.length > 1) {
thisLib.network.fit({
nodes: connectednode,
animation: true
});
}
}
thisLib.network.on("doubleClick",highlightWhenDoubleClicked);
function highlightWhenDoubleClicked(data){
var selectnode = data.nodes;
if (selectnode == undefined){
selectnode = [];
}
if (selectnode.length > 0){
var highLightNodes = [];
selectnode.forEach(function(node){
var connectedNodes = thisLib.network.getConnectedNodes(node);
highLightNodes = highLightNodes.concat(connectedNodes);
highLightNodes.push(node);
});
highLightNodes.forEach(function(nodeID){
// Alternative way to highlight the node - Enlarge the node
//nodes._data[nodeID].size = nodes._data[nodeID].size * 1.5;
});
thisLib.network.selectNodes(highLightNodes);
//forceredraw(false);
}
}
},
defaultContextMenu: function(){
var thisLib = this;
// Context menu, pop-up when you right click
// The default context menu give you to chance to change to sub graph view
thisLib.div_network.addEventListener("contextmenu",rightClickMenuGenerator,false);
function rightClickMenuGenerator(clickData){
//console.log(clickData);
document.addEventListener("click",clearEverythingInContextMenu,{once: true});
var menuELE = thisLib.div_contextMenu;
var menuList = document.createElement("dl");
clearEverythingInContextMenu();
//var x = clickData.pointer.DOM.x;
//var y = clickData.pointer.DOM.y;
var x = clickData.layerX;
var y = clickData.layerY;
clickData.preventDefault();
var root = thisLib.rootname;
//var selectedNodes = thisLib.network.getSelectedNodes();
var selectedNode = thisLib.network.getNodeAt({x:x,y:y});
var selectedNodes = [ selectedNode ];
var connectedNodes = [];
//updateList("Close Menu","dt");
menuELE.style = "margin: 0; padding: 0; overflow: hidden; position: absolute; left: "+x+"px; top: "+y+"px; background-color: #333333; border: none; ";//width: 100px; height: 100px
updateList("Jump to Composition:", "dt");
updateList(root, "dd");
if (selectedNode !== undefined){
selectedNodes.forEach(function(nodeID){
var c0 = thisLib.network.getConnectedNodes(nodeID);
connectedNodes = connectedNodes.concat(c0);
});
updateList("Jump to Selected Nodes:","dt");
selectedNodes.forEach(function(nodeID){
updateList(nodeID,"dd");
});
if (connectedNodes.length > 0){
updateList("Jump to Connected Nodes:","dt");
connectedNodes.forEach(function(nodeID){
updateList(nodeID,"dd");
});
}
}
menuELE.appendChild(menuList);
function updateList(id,DOMType){
// dds are used to call functions
// dts are just descriptive words
var entry = document.createElement(DOMType);
entry.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none;";
entry.onmouseover = function(d){
entry.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none; background-color: #111111";
};
entry.onmouseout = function(d){
entry.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none; background-color: #333333";
};
entry.innerHTML = id;
if(id == "Close Menu"){
entry.onclick = function(){
clearEverythingInContextMenu();
}
}
else if (DOMType == "dd"){
entry.onclick = function(){
var para = thisLib.para;
para.essentials.viewRoot = id;
thisLib.init(para)
}
}
menuList.appendChild(entry);
return 0;
}
}
function clearEverythingInContextMenu(){
//console.log("closing");
var menuELE = thisLib.div_contextMenu;
while (menuELE.firstChild){
menuELE.removeChild(menuELE.firstChild);
}
menuELE.style = "";
}
},
customizedContextMenu: function(){
var thisLib = this;
// Context menu, pop-up when you right click
// The default context menu give you to chance to change to sub graph view
thisLib.div_network.addEventListener("contextmenu", rightClickMenuGenerator, false);
function rightClickMenuGenerator(clickData){
//console.log(clickData);
document.addEventListener("click",clearEverythingInContextMenu,{once: true});
var menuELE = thisLib.div_contextMenu;
var menuList = document.createElement("dl");
clearEverythingInContextMenu();
var x = clickData.layerX;
var y = clickData.layerY;
clickData.preventDefault();
var root = thisLib.rootname;
//var selectedNodes = thisLib.network.getSelectedNodes();
var selectedNode = thisLib.network.getNodeAt({x:x,y:y});
var selectedNodes = [ selectedNode ];
var connectedNodes = [];
//updateList("Close Menu","dt");
menuELE.style = "margin: 0; padding: 0; overflow: hidden; position: absolute; left: "+x+"px; top: "+y+"px; background-color: #333333; border: none; ";//width: 100px; height: 100px
// updateList("Jump to:", "dt");
if (selectedNode !== undefined && selectedNode !== "Topology" && !selectedNode.startsWith("fake")){
var entry = document.createElement("dt");
entry.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none;";
entry.onmouseover = function(d){
entry.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none; background-color: #111111";
};
entry.onmouseout = function(d){
entry.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none; background-color: #333333";
};
entry.innerHTML = "Jump to GlycoMotif"; //change the description
entry.name = selectedNode;
entry.onclick = function(){
var nodeID = this.name;
var pre, suf;
if (thisLib.para.contextMenu.externalURL1){pre = thisLib.para.contextMenu.externalURL1}else{pre = ""}
if (thisLib.para.contextMenu.externalURL2){suf = thisLib.para.contextMenu.externalURL2}else{suf = ""}
var externalURL = pre + nodeID + suf;
window.open(externalURL);
};
menuList.appendChild(entry);
var entry2 = document.createElement("dt");
entry2.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none;";
entry2.onmouseover = function(d){
entry2.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none; background-color: #111111";
};
entry2.onmouseout = function(d){
entry2.style = "display: block; color: white; text-align: left; padding: 5px; text-decoration: none; background-color: #333333";
};
entry2.innerHTML = "Jump to GlyTouCan"; //change the description
entry2.name = selectedNode;
entry2.onclick = function(){
var nodeID = this.name;
var pre, suf;
pre = "https://glytoucan.org/Structures/Glycans/";
suf = "";
//var acc = nodeID.split("_")[0];
var externalURL = pre + nodeID + suf;
window.open(externalURL);
};
menuList.appendChild(entry2);
}
menuELE.appendChild(menuList);
}
function clearEverythingInContextMenu(){
//console.log("closing");
var menuELE = thisLib.div_contextMenu;
while (menuELE.firstChild){
menuELE.removeChild(menuELE.firstChild);
}
menuELE.style = "";
}
},
// *********************************************************
// ******************* Mini Map Function *******************
// *********************************************************
// The "global variables" for Mini-map are declared here
fitScale : 0,
fitPos : 0,
rectPointer : 0,
naviWindowWidth : 0,
naviWindowHeight : 0,
naviInitial : function (){
var thisLib = this;
var currentScale = this.network.getScale();
var currentPos = this.network.getViewPosition();
while(thisLib.div_navi.firstChild){
thisLib.div_navi.remove(thisLib.div_navi.firstChild)
}
var css = thisLib.naviWindowPos() + " background-color: #f2ffff; height: "+ thisLib.naviWindowHeight + "px; width: " + thisLib.naviWindowWidth + "px;";
thisLib.div_navi.style = css;
var naviNetworkContainer = document.createElement("div");
naviNetworkContainer.style = "position: absolute; border: 1px solid lightgray; height: 100%; width: 100%";
thisLib.div_navi.appendChild(naviNetworkContainer);
var naviNetwork = new vis.Network(naviNetworkContainer);
var data, nodes, edges, options;
data = thisLib.data;
options = thisLib.options;
naviNetwork.setOptions(options);
naviNetwork.setData(data);
thisLib.rectPointer = document.createElement("canvas");
thisLib.rectPointer.setAttribute("style","position: absolute; border: 1px solid lightgray;"); // border: 1px solid lightgray
thisLib.rectPointer.setAttribute("width",thisLib.naviWindowWidth);
thisLib.rectPointer.setAttribute("height",thisLib.naviWindowHeight);
//thisLib.rectPointer.setAttribute("id","glycanviewer_rect");
thisLib.div_navi.appendChild(thisLib.rectPointer);
thisLib.fitScale = thisLib.network.getScale();
thisLib.fitPos = thisLib.network.getViewPosition();
thisLib.whereAmI();
//this.network.fit(capture());
function capture(){
var networkCanvas = thisLib.div_network.getElementsByTagName("canvas")[0];
var image,
dataURI = networkCanvas.toDataURL();
thisLib.naviWindowSizeCalc();
image = document.createElement('img');
image.src = dataURI;
image.width = thisLib.naviWindowWidth;
image.height = thisLib.naviWindowHeight;
image.setAttribute("style","position: absolute; background-color: #f2ffff; border: 1px solid lightgray;"); // border: 1px solid lightgray
var navi = thisLib.div_navi;
navi.setAttribute("style",thisLib.naviWindowPos());
while (navi.childElementCount > 0) {
navi.removeChild(navi.children[0]);
}
navi.appendChild(image);
thisLib.rectPointer = document.createElement("canvas");
thisLib.rectPointer.setAttribute("style","position: absolute; border: 1px solid lightgray;"); // border: 1px solid lightgray
thisLib.rectPointer.setAttribute("width",thisLib.naviWindowWidth);
thisLib.rectPointer.setAttribute("height",thisLib.naviWindowHeight);
thisLib.rectPointer.setAttribute("id","glycanviewer_rect");
navi.appendChild(thisLib.rectPointer);
thisLib.fitScale = thisLib.network.getScale();
thisLib.fitPos = thisLib.network.getViewPosition();
moveBack();
}
function moveBack(){
thisLib.network.moveTo(
{
position: {x:currentPos.x, y:currentPos.y},
scale: currentScale,
offset: {x:0, y:0}
},thisLib.whereAmI()
);
//console.log(currentPos);
return 0;
}
},
whereAmI : function (){
var thisLib = this;
working();
//thisLib.div_network.eventListeners = null;
thisLib.div_network.addEventListener('click', working);
thisLib.div_network.addEventListener('wheel', working);
thisLib.div_network.addEventListener('touchend', working);
function working(){
var ctx = thisLib.rectPointer.getContext("2d");
ctx.clearRect(0, 0, thisLib.rectPointer.width, thisLib.rectPointer.height);
ctx.beginPath();
var rectWidth, rectHeight, rectRatio, dx, dy;
var canvas2thumbnailScale;
var currentScale = thisLib.network.getScale();
var currentPos = thisLib.network.getViewPosition();
rectRatio = thisLib.fitScale / currentScale;
rectWidth = thisLib.naviWindowWidth * rectRatio;
rectHeight = thisLib.naviWindowHeight * rectRatio;
var networkCanvas = thisLib.div_network.getElementsByTagName("canvas")[0];
canvas2thumbnailScale = thisLib.naviWindowWidth / networkCanvas.width;
dx = (currentPos.x - thisLib.fitPos.x)*thisLib.fitScale*canvas2thumbnailScale - 0.5*(rectWidth - thisLib.naviWindowWidth);
dy = (currentPos.y - thisLib.fitPos.y)*thisLib.fitScale*canvas2thumbnailScale - 0.5*(rectHeight - thisLib.naviWindowHeight);
// Consider page zooming issue
// Not sure whether it will work with browser other than chrome
var wholePageZoomLevel = thisLib.getZoomLevel();
// This formula is use to compensate for window scale
dx = (currentPos.x - thisLib.fitPos.x)*thisLib.fitScale*canvas2thumbnailScale * wholePageZoomLevel - 0.5*(rectWidth - thisLib.naviWindowWidth);
dy = (currentPos.y - thisLib.fitPos.y)*thisLib.fitScale*canvas2thumbnailScale * wholePageZoomLevel - 0.5*(rectHeight - thisLib.naviWindowHeight);
// complement the whole rectangle
var x1, x2, y1, y2;
x1 = (dx > 0)&&(dx < thisLib.naviWindowWidth);
x2 = (dx+rectWidth > 0)&&(dx+rectWidth < thisLib.naviWindowWidth);
y1 = (dy > 0)&&(dy < thisLib.naviWindowHeight);
y2 = (dy+rectHeight > 0)&&(dy+rectHeight < thisLib.naviWindowHeight);
// console.log([dx,dy]);
ctx.lineWidth = 2;
ctx.strokeStyle = "orange";
ctx.rect(dx,dy,rectWidth,rectHeight);
if (!x1){ctx.rect(1,dy,0,rectHeight);}
if (!x2){ctx.rect(thisLib.naviWindowWidth - 1,dy,0,rectHeight);}
if (!y1){ctx.rect(dx,1,rectWidth,0);}
if (!y2){ctx.rect(dx,thisLib.naviWindowHeight - 1,rectWidth,0);}
ctx.stroke();
}
},
naviWindowSizeCalc : function (){
var networkCanvas = this.div_network.getElementsByTagName("canvas")[0];
var percentage = this.para.display.naviOption.size;
var devicePixelRatio = window.devicePixelRatio;
var w1 = Math.round(networkCanvas.width * percentage / devicePixelRatio);
var h1 = Math.round(networkCanvas.height * percentage / devicePixelRatio);
this.naviWindowWidth = w1;
this.naviWindowHeight = h1;
return 0;
},
getZoomLevel : function () {
var level = this.div_network.getElementsByTagName("canvas")[0].width / this.div_root.clientWidth;
return level
},
naviWindowPos : function (){
this.naviWindowSizeCalc();
var h = this.naviWindowHeight;
var w = this.naviWindowWidth;
var pos = this.para.display.naviOption.position;
var tl2t = 0,
tl2b = 0,
tl2r = 0,
tl2l = 0;
var css = "position: absolute; ";
if (pos == 1 || pos == 3){
tl2l = w / 10;
css += "left: "+tl2l+"px; "
}
if (pos == 2 || pos == 4){
//tl2r = this.div_root.clientWidth - w * 1.1;
tl2r = w / 10;
css += "right: "+tl2r+"px; "
}
if (pos == 1 || pos == 2){
tl2t = h / 10;
css += "top: "+ tl2t +"px; "
}
if (pos == 3 || pos == 4){
tl2b = h / 10;
if (this.para.display.enableTitle)
{
tl2b = tl2b + 27;
}
css += "bottom: "+tl2b+"px; "
}
return css;
},
// *********************************************************
// ******************* Helper Function ********************
// *********************************************************
// *********************************************************
// ********************** IE Related ***********************
// *********************************************************
IEQuestionMark : function(){
var ua = window.navigator.userAgent;
var msie = ua.indexOf("MSIE ");
return (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\:11\./))
},
compatibleDraw : function(para){
var component = para.essentials.component;
var rootname = component.root;
var topoonly = para.essentials.topoOnly;
if (para.essentials.viewRoot){
rootname = para.essentials.viewRoot;
}
recomputeLevels(component);
function recomputeLevels(component) {
var toexplore = [ component.root ];
var r;
while (true) {
if (toexplore.length == 0) {
break;
}
r = toexplore.pop();
var rlevel = component.nodes[r].level;
if (r in component.edges) {
component.edges[r].forEach(function(e) {
if (component.nodes[e.to].level < (rlevel+1)) {
component.nodes[e.to].level = (rlevel+1);
}
toexplore.push(e.to);
});
}
}
}
// Loading the title