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d3.functor = function functor(v) { | |
return typeof v === "function" ? v : function() { | |
return v; | |
}; | |
}; | |
d3.tip = function() { | |
var direction = d3_tip_direction, | |
offset = d3_tip_offset, | |
html = d3_tip_html, | |
node = initNode(), | |
svg = null, | |
point = null, | |
target = null | |
function tip(vis) { | |
svg = getSVGNode(vis) | |
point = svg.createSVGPoint() | |
document.body.appendChild(node) | |
} | |
// Public - show the tooltip on the screen | |
// | |
// Returns a tip | |
tip.show = function() { | |
var args = Array.prototype.slice.call(arguments) | |
if(args[args.length - 1] instanceof SVGElement) target = args.pop() | |
var content = html.apply(this, args), | |
poffset = offset.apply(this, args), | |
dir = direction.apply(this, args), | |
nodel = getNodeEl(), | |
i = directions.length, | |
coords, | |
scrollTop = document.documentElement.scrollTop || document.body.scrollTop, | |
scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft | |
nodel.html(content) | |
.style('position', 'absolute') | |
.style('opacity', 1) | |
.style('pointer-events', 'all') | |
while(i--) nodel.classed(directions[i], false) | |
coords = direction_callbacks[dir].apply(this) | |
nodel.classed(dir, true) | |
.style('top', (coords.top + poffset[0]) + scrollTop + 'px') | |
.style('left', (coords.left + poffset[1]) + scrollLeft + 'px') | |
return tip | |
} | |
// Public - hide the tooltip | |
// | |
// Returns a tip | |
tip.hide = function() { | |
var nodel = getNodeEl() | |
nodel | |
.style('opacity', 0) | |
.style('pointer-events', 'none') | |
return tip | |
} | |
// Public: Proxy attr calls to the d3 tip container. Sets or gets attribute value. | |
// | |
// n - name of the attribute | |
// v - value of the attribute | |
// | |
// Returns tip or attribute value | |
tip.attr = function(n, v) { | |
if (arguments.length < 2 && typeof n === 'string') { | |
return getNodeEl().attr(n) | |
} else { | |
var args = Array.prototype.slice.call(arguments) | |
d3.selection.prototype.attr.apply(getNodeEl(), args) | |
} | |
return tip | |
} | |
// Public: Proxy style calls to the d3 tip container. Sets or gets a style value. | |
// | |
// n - name of the property | |
// v - value of the property | |
// | |
// Returns tip or style property value | |
tip.style = function(n, v) { | |
// debugger; | |
if (arguments.length < 2 && typeof n === 'string') { | |
return getNodeEl().style(n) | |
} else { | |
var args = Array.prototype.slice.call(arguments); | |
if (args.length === 1) { | |
var styles = args[0]; | |
Object.keys(styles).forEach(function(key) { | |
return d3.selection.prototype.style.apply(getNodeEl(), [key, styles[key]]); | |
}); | |
} | |
} | |
return tip | |
} | |
// Public: Set or get the direction of the tooltip | |
// | |
// v - One of n(north), s(south), e(east), or w(west), nw(northwest), | |
// sw(southwest), ne(northeast) or se(southeast) | |
// | |
// Returns tip or direction | |
tip.direction = function(v) { | |
if (!arguments.length) return direction | |
direction = v == null ? v : d3.functor(v) | |
return tip | |
} | |
// Public: Sets or gets the offset of the tip | |
// | |
// v - Array of [x, y] offset | |
// | |
// Returns offset or | |
tip.offset = function(v) { | |
if (!arguments.length) return offset | |
offset = v == null ? v : d3.functor(v) | |
return tip | |
} | |
// Public: sets or gets the html value of the tooltip | |
// | |
// v - String value of the tip | |
// | |
// Returns html value or tip | |
tip.html = function(v) { | |
if (!arguments.length) return html | |
html = v == null ? v : d3.functor(v) | |
return tip | |
} | |
// Public: destroys the tooltip and removes it from the DOM | |
// | |
// Returns a tip | |
tip.destroy = function() { | |
if(node) { | |
getNodeEl().remove(); | |
node = null; | |
} | |
return tip; | |
} | |
function d3_tip_direction() { return 'n' } | |
function d3_tip_offset() { return [0, 0] } | |
function d3_tip_html() { return ' ' } | |
var direction_callbacks = { | |
n: direction_n, | |
s: direction_s, | |
e: direction_e, | |
w: direction_w, | |
nw: direction_nw, | |
ne: direction_ne, | |
sw: direction_sw, | |
se: direction_se | |
}; | |
var directions = Object.keys(direction_callbacks); | |
function direction_n() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.n.y - node.offsetHeight, | |
left: bbox.n.x - node.offsetWidth / 2 | |
} | |
} | |
function direction_s() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.s.y, | |
left: bbox.s.x - node.offsetWidth / 2 | |
} | |
} | |
function direction_e() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.e.y - node.offsetHeight / 2, | |
left: bbox.e.x | |
} | |
} | |
function direction_w() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.w.y - node.offsetHeight / 2, | |
left: bbox.w.x - node.offsetWidth | |
} | |
} | |
function direction_nw() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.nw.y - node.offsetHeight, | |
left: bbox.nw.x - node.offsetWidth | |
} | |
} | |
function direction_ne() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.ne.y - node.offsetHeight, | |
left: bbox.ne.x | |
} | |
} | |
function direction_sw() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.sw.y, | |
left: bbox.sw.x - node.offsetWidth | |
} | |
} | |
function direction_se() { | |
var bbox = getScreenBBox() | |
return { | |
top: bbox.se.y, | |
left: bbox.e.x | |
} | |
} | |
function initNode() { | |
var node = d3.select(document.createElement('div')) | |
node | |
.style('position', 'absolute') | |
.style('top', 0) | |
.style('opacity', 0) | |
.style('pointer-events', 'none') | |
.style('box-sizing', 'border-box') | |
return node.node() | |
} | |
function getSVGNode(el) { | |
el = el.node() | |
if(el.tagName.toLowerCase() === 'svg') | |
return el | |
return el.ownerSVGElement | |
} | |
function getNodeEl() { | |
if(node === null) { | |
node = initNode(); | |
// re-add node to DOM | |
document.body.appendChild(node); | |
}; | |
return d3.select(node); | |
} | |
// Private - gets the screen coordinates of a shape | |
// | |
// Given a shape on the screen, will return an SVGPoint for the directions | |
// n(north), s(south), e(east), w(west), ne(northeast), se(southeast), nw(northwest), | |
// sw(southwest). | |
// | |
// +-+-+ | |
// | | | |
// + + | |
// | | | |
// +-+-+ | |
// | |
// Returns an Object {n, s, e, w, nw, sw, ne, se} | |
function getScreenBBox() { | |
var targetel = target || d3.event.target; | |
while ('undefined' === typeof targetel.getScreenCTM && 'undefined' === targetel.parentNode) { | |
targetel = targetel.parentNode; | |
} | |
var bbox = {}, | |
matrix = targetel.getScreenCTM(), | |
tbbox = targetel.getBBox(), | |
width = tbbox.width, | |
height = tbbox.height, | |
x = tbbox.x, | |
y = tbbox.y | |
point.x = x | |
point.y = y | |
bbox.nw = point.matrixTransform(matrix) | |
point.x += width | |
bbox.ne = point.matrixTransform(matrix) | |
point.y += height | |
bbox.se = point.matrixTransform(matrix) | |
point.x -= width | |
bbox.sw = point.matrixTransform(matrix) | |
point.y -= height / 2 | |
bbox.w = point.matrixTransform(matrix) | |
point.x += width | |
bbox.e = point.matrixTransform(matrix) | |
point.x -= width / 2 | |
point.y -= height / 2 | |
bbox.n = point.matrixTransform(matrix) | |
point.y += height | |
bbox.s = point.matrixTransform(matrix) | |
return bbox | |
} | |
return tip | |
}; |
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{ | |
"nodes": | |
[{"id": "Michael Scott"}, | |
{"id": "Jim Halpert"}, | |
{"id": "Pam Beasley"} | |
], | |
"links": | |
[{"source": "Michael Scott", "target": "Jim Halpert", "value": 50}, | |
{"source": "Michael Scott", "target": "Pam Beasley", "value": 25} | |
] | |
} |
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<!DOCTYPE html> | |
<head> | |
<meta charset = "UTF-8"> | |
<link rel = "stylesheet" type = "text/css" href = "network.css?<?php echo time(); ?>"/> | |
</head> | |
<svg width="960" height="500"></svg> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script> | |
<script src="d3-tip.js"></script> | |
<script> | |
var svg = d3.select("svg"), | |
width = +svg.attr("width"), | |
height = +svg.attr("height"); | |
var simulation = d3.forceSimulation() | |
.force("link", d3.forceLink().id(function(d) { return d.id; })) | |
.force("charge", d3.forceManyBody().strength(-1000)) | |
.force("center", d3.forceCenter(width / 2, height / 2)); | |
d3.json("data.json", function(error, graph) { | |
if (error) throw error; | |
var color = d3.scaleSequential().domain([20,60]).interpolator(d3.interpolateBlues); | |
var tip = d3.tip() | |
.attr('class', 'd3-tip') | |
.offset([-10, 0]) | |
.html(function(d) { | |
return d.id | |
}); | |
svg.call(tip); | |
var link = svg.append("g") | |
.attr("class", "links") | |
.selectAll("line") | |
.data(graph.links) | |
.enter().append("line") | |
.style("stroke", function(d) { return color(d.value); }); | |
var node = svg.append("g") | |
.attr("class", "nodes") | |
.selectAll("circle") | |
.data(graph.nodes) | |
.enter().append("circle") | |
.attr("r", 4) | |
.call(d3.drag() | |
.on("start", dragstart) | |
.on("drag", dragged) | |
.on("end", dragend)) | |
.on('mouseover', tip.show) | |
.on('mouseout', tip.hide) | |
.on("dblclick", releasenode); | |
function dragstart(d, i) { | |
simulation.stop() | |
} | |
function dragged(d) { | |
d.fx = d3.event.x; | |
d.fy = d3.event.y; | |
} | |
function dragend(d, i) { | |
simulation.alpha(0.3).restart(); | |
} | |
function releasenode(d) { | |
d.fx = undefined; | |
d.fy = undefined; | |
} | |
node.append("title") | |
.text(function(d) { return d.id; }); | |
simulation | |
.nodes(graph.nodes) | |
.on("tick", ticked); | |
simulation.force("link") | |
.links(graph.links); | |
function ticked() { | |
link | |
.attr("x1", function(d) { return d.source.x; }) | |
.attr("y1", function(d) { return d.source.y; }) | |
.attr("x2", function(d) { return d.target.x; }) | |
.attr("y2", function(d) { return d.target.y; }); | |
node | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }); | |
} | |
}); | |
</script> |
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