gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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HTML
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
<meta name="description" content="A donut chart in each node."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
<title>Donut Charts</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">
<div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
<div class="md:pl-4">
<a class="text-white hover:text-white no-underline hover:no-underline
font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
<h1 class="mb-0 p-1 ">GoJS</h1>
</a>
</div>
<button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">
<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">
<path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path>
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</svg>
</button>
<div id="topnavList" class="hidden lg:text-base sm:block items-center w-auto mt-0 text-white p-0 z-20">
<ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">
<li class="p-1 sm:p-0"><a class="topnav-link" href="../learn/">Learn</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../intro/">Intro</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../api/">API</a></li>
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target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/contact.html', 'contact');">Contact</a></li>
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target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>
</ul>
</div>
</div>
<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />
</nav>
<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="../release/go.js"></script>
<div class="p-4 w-full">
<script id="code">
function init() {
if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
var $ = go.GraphObject.make;
myDiagram =
$(go.Diagram, "myDiagramDiv");
myDiagram.nodeTemplate =
$(go.Node, "Spot",
$(go.Panel,
$(go.Shape, "Circle", // provide a whole-circle background for the chart
{ width: 100, height: 100, strokeWidth: 0, fill: "transparent" }),
$(go.Shape, { fill: "transparent", stroke: "cyan", strokeWidth: 8 },
new go.Binding("geometry", "value", makeArc),
new go.Binding("stroke", "color1")),
$(go.Shape, { fill: "transparent", stroke: "gray", strokeWidth: 8 },
new go.Binding("geometry", "value", makeArcRest),
new go.Binding("stroke", "color2"))
),
$(go.TextBlock,
new go.Binding("text"))
);
// These arcs assume the angle starts at 270 degrees, at the top of the circle.
// They all assume the circle is 100x100 in size.
function makeArc(sweep) {
return new go.Geometry()
.add(new go.PathFigure(50, 0)
.add(new go.PathSegment(go.PathSegment.Arc, -90, sweep, 50, 50, 50, 50)));
}
function makeArcRest(sweep) {
var p = new go.Point(50, 0).rotate(-90+sweep).offset(50, 50);
return new go.Geometry()
.add(new go.PathFigure(p.x, p.y)
.add(new go.PathSegment(go.PathSegment.Arc, sweep-90, 360-sweep, 50, 50, 50, 50)));
}
myDiagram.model = new go.GraphLinksModel(
[
{ key: 1, text: "Alpha", value: 0 },
{ key: 2, text: "Beta", value: 90 },
{ key: 3, text: "Gamma", value: 135 },
{ key: 4, text: "Delta", value: 330, color1: "red", color2: "green" }
],
[
{ from: 1, to: 2 },
{ from: 1, to: 3 },
{ from: 3, to: 4 },
{ from: 4, to: 1 }
]);
}
function changeValue() {
var node = myDiagram.selection.first();
if (node instanceof go.Node) {
myDiagram.model.commit(function(m) {
var val = node.data.value;
val += Math.random() * 40 - 20;
if (val < 0) val = 20;
else if (val >= 360) val = 340;
m.set(node.data, "value", val);
}, "changed data value");
}
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
<button onclick="changeValue()">Change Selected Value</button>
<p>
Each node contains a Position Panel containing two Shape elements that get Geometry values
that show a data value as an annular bar in a circle. One can also specify the colors of
the two bars -- the bar showing the value and the rest of the circle.
</p>
<p>
For more sophisticated charts within nodes, see the <a href="canvases.html">Canvas Charts</a> sample.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>