Appearance
Text
This example shows how the text attribute can be used to add text to edges in a graph. Texts have font, color, size, backgroun color and other properties, providing a wide range of customization options.
ts
import Ogma from '@linkurious/ogma';
const ogma = new Ogma({
container: 'graph-container'
});
// Add a rule that specifies the Edge text style. The text to display is dynamically composed each time the edge is painted.
ogma.styles.addEdgeRule({
text: {
maxLineLength: 140, // truncate
size: 12,
color: 'black',
minVisibleSize: 0,
content: e => 'Edge ' + e.getId()
}
});
const graph = await ogma.generate.random({ nodes: 25, edges: 20 });
await ogma.setGraph(graph);
await ogma.layouts.force({ locate: true });
// hide edge texts
//ogma.styles.setEdgeTextsVisibility(false);
html
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<link type="text/css" rel="stylesheet" href="styles.css" />
</head>
<body>
<div id="graph-container"></div>
<script type="module" src="index.ts"></script>
</body>
</html>
css
#graph-container {
top: 0;
bottom: 0;
left: 0;
right: 0;
position: absolute;
margin: 0;
overflow: hidden;
}