function graphSettings(type) {
var t;
if (type == "arranged" || type == "chaotic") {
t = {
//id of the visualization container
injectInto: 'infovis',
//Enable zooming and panning
//by scrolling and DnD
Navigation: {
enable: true,
type: 'HTML',
//Enable panning events only if we're dragging the empty
//canvas (and not a node).
panning: 'avoid nodes',
zooming: 15 //zoom speed. higher is more sensible
},
// Change node and edge styles such as
// color and width.
// These properties are also set per node
// with dollar prefixed data-properties in the
// JSON structure.
Node: {
overridable: true,
color: '#2D6A5D',
type: 'customNode',
dim: 25
},
Edge: {
overridable: true,
color: '#222222',
type: 'customEdge',
lineWidth: 2
},
//Native canvas text styling
Label: {
type: 'HTML', //Native or HTML
size: 20,
//style: 'bold'
},
//Add Tips
Tips: {
enable: false,
onShow: function (tip, node) {}
},
// Add node events
Events: {
enable: true,
enableForEdges: true,
type: 'HTML',
//Change cursor style when hovering a node
onMouseEnter: function () {
},
onMouseLeave: function () {
},
//Update node positions when dragged
onDragMove: function (node, eventInfo, e) {
clickDragOnTopic(node, eventInfo, e);
},
onDragEnd: function() {
if (tempInit && tempNode2 == null) {
$('#item_addSynapse').val("true");
$('#new_item').fadeIn('fast');
addMetacode();
$('#item_name').focus();
}
else if (tempInit && tempNode2 != null) {
$('#item_addSynapse').val("false");
$('#synapse_item1id').val(tempNode.id);
$('#synapse_item2id').val(tempNode2.id);
$('#new_synapse').fadeIn('fast');
$('#synapse_desc').focus();
tempNode = null;
tempNode2 = null;
tempInit = false;
}
},
onDragCancel: function() {
tempNode = null;
tempNode2 = null;
tempInit = false;
$('#item_addSynapse').val("false");
$('#item_item1id').val(0);
$('#item_item2id').val(0);
Mconsole.plot();
},
//Implement the same handler for touchscreens
onTouchMove: function (node, eventInfo, e) {
$jit.util.event.stop(e); //stop default touchmove event
this.onDragMove(node, eventInfo, e);
},
//Add also a click handler to nodes
onClick: function (node, eventInfo, e) {
//clicking on a node, or clicking on blank part of canvas?
if (node.nodeFrom) {
selectEdgeOnClickHandler(node);
}
else if (node && !node.nodeFrom) {
selectNodeOnClickHandler(node);
} else {
canvasDoubleClickHandler(eventInfo.getPos(), e);
}//if
}//onClick
},
//Number of iterations for the FD algorithm
iterations: 200,
//Edge length
levelDistance: 200,
// Add text to the labels. This method is only triggered
// on label creation and only for DOM labels (not native canvas ones).
onCreateLabel: function (domElement, node) {
var html =
'<div class="CardOnGraph" title="Click to Hide" id="item_' + node.id + '"><p class="type">' + node.getData("itemcatname") + '</p>' +
'<img alt="' + node.getData("itemcatname") + '" class="icon" height="50" src="' + imgArray[node.getData("itemcatname")].src + '" width="50" />' +
'<div class="scroll"><a href="/items/' + node.id + '" class="title">' + node.name + '</a>' +
'<div class="contributor">Added by: <a href="/users/' + node.getData('userid') + '">' + node.getData('username') + '</a></div>' +
'<div class="desc"><p>' + node.getData('desc') + '</p></div></div>' +
'<a href="' + node.getData('link') + '" class="link" target="_blank">' + node.getData('link') + '</a></div>';
var showCard = document.createElement('div');
showCard.className = 'showcard item_' + node.id;
showCard.innerHTML = html;
showCard.style.display = "none";
domElement.appendChild(showCard);
// add some events to the label
showCard.onclick = function(){
delete node.selected;
node.setData('dim', 25, 'current');
node.eachAdjacency(function (adj) {
adj.setDataset('end', {
lineWidth: 2,
color: '#222222'
});
adj.setData('showDesc', false, 'current');
});
Mconsole.fx.animate({
modes: ['edge-property:lineWidth:color'],
duration: 500
});
$('.showcard.item_' + node.id).fadeOut('fast', function(){
$('.name').css('display','block');
Mconsole.plot();
});
}
// Create a 'name' button and add it
// to the main node label
var nameContainer = document.createElement('span'),
style = nameContainer.style;
nameContainer.className = 'name item_' + node.id;
nameContainer.innerHTML = '<div class="label">' + node.name + '</div>';
domElement.appendChild(nameContainer);
style.fontSize = "0.9em";
style.color = "#222222";
// add some events to the label
nameContainer.onclick = function(){
selectNodeOnClickHandler(node)
}
},
// Change node styles when DOM labels are placed
// or moved.
onPlaceLabel: function (domElement, node) {
var style = domElement.style;
var left = parseInt(style.left);
var top = parseInt(style.top);
var w = domElement.offsetWidth;
style.left = (left - w / 2) + 'px';
style.top = (top+25) + 'px';
style.display = '';
}
};
} else if (type = "centered") {
t = {
//id of the visualization container
injectInto: 'infovis',
//Optional: create a background canvas that plots
//concentric circles.
background: {
CanvasStyles: {
strokeStyle: '#333',
lineWidth: 1.5
}
},
//Enable zooming and panning
//by scrolling and DnD
Navigation: {
enable: true,
type: 'HTML',
//Enable panning events only if we're dragging the empty
//canvas (and not a node).
panning: 'avoid nodes',
zooming: 15 //zoom speed. higher is more sensible
},
// Change node and edge styles such as
// color and width.
// These properties are also set per node
// with dollar prefixed data-properties in the
// JSON structure.
Node: {
overridable: true,
color: '#2D6A5D',
type: 'customNode',
dim: 25
},
Edge: {
overridable: true,
color: '#222222',
type: 'customEdge',
lineWidth: 2
},
//Native canvas text styling
Label: {
type: 'HTML', //Native or HTML
size: 20,
//style: 'bold'
},
//Add Tips
Tips: {
enable: false,
onShow: function (tip, node) {}
},
// Add node events
Events: {
enable: true,
type: 'HTML',
//Change cursor style when hovering a node
onMouseEnter: function () {
},
onMouseLeave: function () {
},
//Update node positions when dragged
onDragMove: function (node, eventInfo, e) {
clickDragOnTopic(node, eventInfo, e);
},
onDragEnd: function() {
if (tempInit && tempNode2 == null) {
$('#item_addSynapse').val("true");
$('#new_item').fadeIn('fast');
addMetacode();
$('#item_name').focus();
}
else if (tempInit && tempNode2 != null) {
$('#item_addSynapse').val("false");
$('#synapse_item1id').val(tempNode.id);
$('#synapse_item2id').val(tempNode2.id);
$('#new_synapse').fadeIn('fast');
$('#synapse_desc').focus();
tempNode = null;
tempNode2 = null;
tempInit = false;
}
},
onDragCancel: function() {
tempNode = null;
tempNode2 = null;
tempInit = false;
Mconsole.plot();
},
//Implement the same handler for touchscreens
onTouchMove: function (node, eventInfo, e) {
$jit.util.event.stop(e); //stop default touchmove event
this.onDragMove(node, eventInfo, e);
},
//Add also a click handler to nodes
onClick: function (node, eventInfo, e) {
//clicking on an edge, a node, or clicking on blank part of canvas?
if (eventInfo.getEdge() != false || node.nodeFrom) {
if (eventInfo.getEdge() != false) selectEdgeOnClickHandler(eventInfo.getEdge());
else if (node.nodeFrom) selectEdgeOnClickHandler(node);
}
else if (node && !node.nodeFrom) {
if (!Mconsole.busy) {
selectNodeOnClickHandler(node);
Mconsole.onClick(node.id, {
hideLabels: false
});
}
}
else {
canvasDoubleClickHandler(eventInfo.getPos(), e);
}//if
}//onClick
},
//Number of iterations for the FD algorithm
iterations: 200,
//Edge length
levelDistance: 200,
// Add text to the labels. This method is only triggered
// on label creation and only for DOM labels (not native canvas ones).
onCreateLabel: function (domElement, node) {
var html =
'<div class="CardOnGraph" title="Click to Hide" id="item_' + node.id + '"><p class="type">' + node.getData("itemcatname") + '</p>' +
'<img alt="' + node.getData("itemcatname") + '" class="icon" height="50" src="' + imgArray[node.getData("itemcatname")].src + '" width="50" />' +
'<div class="scroll"><a href="/items/' + node.id + '" class="title">' + node.name + '</a>' +
'<div class="contributor">Added by: <a href="/users/' + node.getData('userid') + '">' + node.getData('username') + '</a></div>' +
'<div class="desc"><p>' + node.getData('desc') + '</p></div></div>' +
'<a href="' + node.getData('link') + '" class="link" target="_blank">' + node.getData('link') + '</a></div>';
var showCard = document.createElement('div');
showCard.className = 'showcard item_' + node.id;
showCard.innerHTML = html;
showCard.style.display = "none";
domElement.appendChild(showCard);
// add some events to the label
showCard.onclick = function(){
if (!Mconsole.busy) {
delete node.selected;
node.setData('dim', 25, 'current');
node.eachAdjacency(function (adj) {
adj.setDataset('end', {
lineWidth: 2,
color: '#222222'
});
adj.setData('showDesc', false, 'current');
});
Mconsole.fx.animate({
modes: ['edge-property:lineWidth:color'],
duration: 500
});
$('.showcard.item_' + node.id).fadeOut('fast', function(){
$('.name').css('display','block');
Mconsole.plot();
});
}
}
// Create a 'name' button and add it
// to the main node label
var nameContainer = document.createElement('span'),
style = nameContainer.style;
nameContainer.className = 'name item_' + node.id;
nameContainer.innerHTML = '<div class="label">' + node.name + '</div>';
domElement.appendChild(nameContainer);
style.fontSize = "0.9em";
style.color = "#222222";
// add some events to the label
nameContainer.onclick = function(){
if (!Mconsole.busy) {
selectNodeOnClickHandler(node);
Mconsole.onClick(node.id, {
hideLabels: false
});
}
}
},
// Change node styles when DOM labels are placed
// or moved.
onPlaceLabel: function (domElement, node) {
var style = domElement.style;
var left = parseInt(style.left);
var top = parseInt(style.top);
var w = domElement.offsetWidth;
style.left = (left - w / 2) + 'px';
style.top = (top+25) + 'px';
style.display = '';
}
};
}
return t;
}
// defining code to draw edges with arrows pointing in the middle of them
var renderMidArrow = function(from, to, dim, swap, canvas){
var ctx = canvas.getCtx();
// invert edge direction
if (swap) {
var tmp = from;
from = to;
to = tmp;
}
// vect represents a line from tip to tail of the arrow
var vect = new $jit.Complex(to.x - from.x, to.y - from.y);
// scale it
vect.$scale(dim / vect.norm());
// compute the midpoint of the edge line
var midPoint = new $jit.Complex((to.x + from.x) / 2, (to.y + from.y) / 2);
// move midpoint by half the "length" of the arrow so the arrow is centered on the midpoint
midPoint.x += (vect.x / 0.7);
midPoint.y += (vect.y / 0.7);
// compute the tail intersection point with the edge line
var intermediatePoint = new $jit.Complex(midPoint.x - vect.x,
midPoint.y - vect.y);
// vector perpendicular to vect
var normal = new $jit.Complex(-vect.y / 2, vect.x / 2);
var v1 = intermediatePoint.add(normal);
var v2 = intermediatePoint.$add(normal.$scale(-1));
//ctx.strokeStyle = 'black';
ctx.beginPath();
ctx.moveTo(from.x, from.y);
ctx.lineTo(to.x, to.y);
ctx.stroke();
ctx.beginPath();
ctx.moveTo(v1.x, v1.y);
ctx.lineTo(midPoint.x, midPoint.y);
ctx.lineTo(v2.x, v2.y);
ctx.stroke();
};
// defining custom node type
var nodeSettings = {
'customNode': {
'render': function (node, canvas) {
var pos = node.pos.getc(true),
dim = node.getData('dim'),
cat = node.getData('itemcatname'),
inCommons = node.getData('inCommons'),
onCanvas = node.getData('onCanvas'),
ctx = canvas.getCtx();
// if the topic is from the Commons draw a green circle around it
if (inCommons) {
ctx.beginPath();
ctx.arc(pos.x, pos.y, dim+3, 0, 2 * Math.PI, false);
ctx.strokeStyle = '#67be5f'; // green
ctx.lineWidth = 2;
ctx.stroke();
}
// if the topic is on the Canvas draw a white circle around it
if (onCanvas) {
ctx.beginPath();
ctx.arc(pos.x, pos.y, dim+3, 0, 2 * Math.PI, false);
ctx.strokeStyle = 'white';
ctx.lineWidth = 2;
ctx.stroke();
}
ctx.drawImage(imgArray[cat], pos.x - dim, pos.y - dim, dim*2, dim*2);
},
'contains': function(node, pos) {
var npos = node.pos.getc(true),
dim = node.getData('dim');
return this.nodeHelper.circle.contains(npos, pos, dim);
}
}
}
// defining custom edges
var edgeSettings = {
'customEdge': {
'render': function(adj, canvas) {
//get nodes cartesian coordinates
var pos = adj.nodeFrom.pos.getc(true);
var posChild = adj.nodeTo.pos.getc(true);
var directionCat = adj.getData("category");
//label placement on edges
//plot arrow edge
if (directionCat == "none") {
this.edgeHelper.line.render({ x: pos.x, y: pos.y }, { x: posChild.x, y: posChild.y }, canvas);
}
else if (directionCat == "both") {
renderMidArrow({ x: pos.x, y: pos.y }, { x: posChild.x, y: posChild.y }, 13, true, canvas);
renderMidArrow({ x: pos.x, y: pos.y }, { x: posChild.x, y: posChild.y }, 13, false, canvas);
}
else if (directionCat == "from-to") {
var direction = adj.data.$direction;
var inv = (direction && direction.length>1 && direction[0] != adj.nodeFrom.id);
renderMidArrow({ x: pos.x, y: pos.y }, { x: posChild.x, y: posChild.y }, 13, inv, canvas);
}
//check for edge label in data
var desc = adj.getData("desc") + ' (' + adj.getData("id") + ')';
var showDesc = adj.getData("showDesc");
if( desc != "" && showDesc ) {
//now adjust the label placement
var radius = canvas.getSize();
var x = parseInt((pos.x + posChild.x - (desc.length * 5)) /2);
var y = parseInt((pos.y + posChild.y) /2);
canvas.getCtx().fillStyle = '#000';
canvas.getCtx().font = 'bold 14px arial';
canvas.getCtx().fillText(desc, x, y);
}
}, 'contains' : function(adj, pos) {
var from = adj.nodeFrom.pos.getc(true),
to = adj.nodeTo.pos.getc(true);
return this.edgeHelper.line.contains(from, to, pos, adj.Edge.epsilon);
}
}
}
function selectEdgeOnClickHandler(adj) {
var showDesc = adj.getData("showDesc");
if (showDesc) {
adj.setData('showDesc', false, 'current');
Mconsole.plot();
} else if (!showDesc) {
adj.setData('showDesc', true, 'current');
Mconsole.plot();
}
}//selectEdgeOnClickHandler
function selectNodeOnClickHandler(node) {
$('.showcard').css('display','none');
$('.name').css('display','block');
$('.name.item_' + node.id).css('display','none');
$('.showcard.item_' + node.id).fadeIn('fast');
//set final styles
Mconsole.graph.eachNode(function (n) {
if (n.id != node.id) delete n.selected;
n.setData('dim', 25, 'current');
n.eachAdjacency(function (adj) {
adj.setDataset('end', {
lineWidth: 2,
color: '#222222'
});
adj.setData('showDesc', false, 'current');
});
});
if (!node.selected) {
node.selected = true;
node.setData('dim', 1, 'current');
node.eachAdjacency(function (adj) {
adj.setDataset('end', {
lineWidth: 4,
color: '#FFF'
});
adj.setData('showDesc', true, 'current');
});
} else {
node.setData('dim', 25, 'current');
delete node.selected;
}
//trigger animation to final styles
Mconsole.fx.animate({
modes: ['edge-property:lineWidth:color'],
duration: 500
});
}//selectNodeOnClickHandler
//for the canvasDoubleClickHandler function
var canvasDoubleClickHandlerObject = new Object();
canvasDoubleClickHandlerObject.storedTime = 0;
function canvasDoubleClickHandler(canvasLoc,e) {
var TOLERANCE = 300; //0.3 seconds
//grab the location and timestamp of the click
var storedTime = canvasDoubleClickHandlerObject.storedTime;
var now = Date.now(); //not compatible with IE8 FYI
if (now - storedTime < TOLERANCE) {
//pop up node creation :)
$('#item_grabItem').val("null");
$('#item_addSynapse').val("false");
document.getElementById('new_item').style.left = e.x + "px";
document.getElementById('new_item').style.top = e.y + "px";
$('#item_x').val(canvasLoc.x);
$('#item_y').val(canvasLoc.y);
$('#new_item').fadeIn('fast');
addMetacode();
$('#item_name').focus();
} else {
canvasDoubleClickHandlerObject.storedTime = now;
$('#new_item').fadeOut('fast');
$('#new_synapse').fadeOut('fast');
tempInit = false;
tempNode = null;
tempNode2 = null;
Mconsole.plot();
}
}//canvasDoubleClickHandler
// ForceDirected Mode: for the creation of new topics and synapses through clicking and draggin with right clicks off of topics
function clickDragOnTopic(node, eventInfo, e) {
if (node && !node.nodeFrom) {
$('#new_synapse').fadeOut('fast');
$('#new_item').fadeOut('fast');
var pos = eventInfo.getPos();
// if it's a left click, move the node
if (e.button == 0 && !e.altKey ) {
node.pos.setc(pos.x, pos.y);
Mconsole.plot();
}
// if it's a right click, start synapse creation
else if (e.button == 2 || (e.button == 0 && e.altKey)) {
if (tempInit == false) {
tempNode = node;
tempInit = true;
}
//
temp = eventInfo.getNode();
if (temp != false && temp.id != node.id) { // this means a Node has been returned
tempNode2 = temp;
Mconsole.plot();
renderMidArrow({ x: tempNode.pos.getc().x, y: tempNode.pos.getc().y }, { x: temp.pos.getc().x, y: temp.pos.getc().y }, 13, false, Mconsole.canvas);
// before making the highlighted one bigger, make sure all the others are regular size
Mconsole.graph.eachNode(function (n) {
n.setData('dim', 25, 'current');
});
temp.setData('dim',35,'current');
Mconsole.fx.plotNode(tempNode, Mconsole.canvas);
Mconsole.fx.plotNode(temp, Mconsole.canvas);
} else if (!temp) {
tempNode2 = null;
Mconsole.graph.eachNode(function (n) {
n.setData('dim', 25, 'current');
});
//pop up node creation :)
$('#item_grabItem').val("null");
var myX = e.x - 110;
var myY = e.y - 30;
document.getElementById('new_item').style.left = myX + "px";
document.getElementById('new_item').style.top = myY + "px";
document.getElementById('new_synapse').style.left = myX + "px";
document.getElementById('new_synapse').style.top = myY + "px";
$('#item_x').val(eventInfo.getPos().x);
$('#item_y').val(eventInfo.getPos().y);
Mconsole.plot();
renderMidArrow({ x: tempNode.pos.getc().x, y: tempNode.pos.getc().y }, { x: pos.x, y: pos.y }, 13, false, Mconsole.canvas);
Mconsole.fx.plotNode(tempNode, Mconsole.canvas);
}
}
}
}