gojs
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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
197 lines (183 loc) • 9.9 kB
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 1998-2023 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="my-0 p-1 ">GoJS</h1>
</a>
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<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">
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</svg>
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<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 id="allSampleContent" 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
// Since 2.2 you can also author concise templates with method chaining instead of GraphObject.make
// For details, see https://gojs.net/latest/intro/buildingObjects.html
const $ = go.GraphObject.make;
myDiagram =
new go.Diagram("myDiagramDiv");
const Inner = 40; // inner radius
const Thickness = 30; // Inner + Thickness is outer radius
myDiagram.nodeTemplate =
$(go.Node, "Spot",
$(go.Panel,
new go.Binding("itemArray", "values", normalizeData),
{
itemTemplate:
$(go.Panel, "Spot",
$(go.Shape, // this always occupies the full circle
{ fill: "#00000020", stroke: "white" },
new go.Binding("geometry", "", makeAnnularWedge),
new go.Binding("fill", "color")),
$(go.TextBlock,
{ width: Thickness, textAlign: "center", font: "8pt sans-serif" },
new go.Binding("alignment", "", computeTextAlignment),
//new go.Binding("angle", "", ensureUpright), // does the text need to be rotated?
new go.Binding("text", "", d => d.value + "\n" + Math.round(d.sweep/3.60) + "%")),
{
toolTip: $("ToolTip",
$(go.TextBlock,
new go.Binding("text", "", d => `${d.text}\n#: ${d.value}\n${(d.sweep/3.60).toFixed(1)}%`)))
}
)
}
),
$(go.TextBlock,
{ maxSize: new go.Size(2*Inner, 2*Inner), font: "bold 10pt sans-serif" },
new go.Binding("text"))
);
function normalizeData(arr) {
const details = [];
let total = 0;
arr.forEach(item => {
if (typeof item === "object") {
details.push(Object.assign({}, item));
total += Math.max(item.value, 0.001);
} else {
details.push({ value: item });
total += Math.max(Number(item), 0.001);
}
});
let angle = 0;
details.forEach(item => {
item.angle = angle;
const sw = (item.value/total) * 360;
item.sweep = sw;
angle += sw;
item.radius = Inner;
item.thick = Thickness;
});
return details;
}
function makeAnnularWedge(data) {
const angle = (typeof data.angle === "number") ? data.angle : 0; // start angle
const sweep = (typeof data.sweep === "number") ? data.sweep : 90;
const radius = (typeof data.radius === "number") ? data.radius : Inner; // inner radius
const thick = (typeof data.thick === "number") ? data.thick : Thickness;
// the Geometry will be centered about (0,0)
const outer = radius + thick; // the outer radius
const inner = radius;
const p = new go.Point(outer, 0).rotate(angle);
const q = new go.Point(inner, 0).rotate(angle + sweep);
const rad = Inner + Thickness;
const geo = new go.Geometry()
.add(new go.PathFigure(-rad, -rad)) // always make sure the Geometry includes the top left corner
.add(new go.PathFigure(rad, rad)) // and the bottom right corner of the whole circular area
.add(new go.PathFigure(p.x, p.y) // start at outer corner, go clockwise
.add(new go.PathSegment(go.PathSegment.Arc, angle, sweep, 0, 0, outer, outer))
.add(new go.PathSegment(go.PathSegment.Line, q.x, q.y)) // to opposite inner corner, then anticlockwise
.add(new go.PathSegment(go.PathSegment.Arc, angle + sweep, -sweep, 0, 0, inner, inner).close()));
return geo;
}
function computeTextAlignment(data) {
const angle = (typeof data.angle === "number") ? data.angle : 0; // start angle
const sweep = (typeof data.sweep === "number") ? data.sweep : 90;
const radius = (typeof data.radius === "number") ? data.radius : Inner; // inner radius
const thick = (typeof data.thick === "number") ? data.thick : Thickness;
const p = new go.Point(radius + thick / 2, 0).rotate(angle + sweep / 2);
return new go.Spot(0.5, 0.5, p.x, p.y);
}
// only used if rotating the text labels
function ensureUpright(data) {
const angle = (typeof data.angle === "number") ? data.angle : 0;
const sweep = (typeof data.sweep === "number") ? data.sweep : 90;
const a = angle + sweep/2;
if (a > 90 && a < 270) return a + 180;
return a;
}
myDiagram.model = new go.GraphLinksModel(
[
{ key: 1, text: "Alpha", values: [ 10, 20, 30 ] },
{ key: 2, text: "Beta", values: [ { value: 1, color: "goldenrod" } ] },
{ key: 3, text: "Gamma", values: [ { value: 3, color: "#EFFFFD" }, { value: 9, color: "#B8FFF9" }, { value: 12, color: "#85F4FF" }, { value: 7, color: "#42C2FF" } ] },
{ key: 4, text: "Delta", values: [ { value: 30, color: "pink" }, { value: 90, color: "lightgreen" } ] }
],
[
{ from: 1, to: 2 },
{ from: 1, to: 3 },
{ from: 3, to: 4 },
{ from: 4, to: 1 }
]);
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
<p>
Each node contains a Position Panel containing a variable number of elements that get Geometry values
such that each shows a data value as an annular bar in a circle. One can also specify the colors of the bars.
The <a>Panel.itemTemplate</a> also includes a <a>TextBlock</a> that shows its actual value as well as the percentage
that it represents of the whole Array of data values.
</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>