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Drag nodes
This example shows how to use the nodesDragStart, nodesDragProgress and nodesDragEnd events.
Uncomment in the handlers to see the effect in your console.
ts
import Ogma from '@linkurious/ogma';
const ogma = new Ogma({
container: 'graph-container'
});
ogma.events.on('nodesDragStart', eventData => {
console.log('start', eventData);
// console.log('Starting drag nodes ' +
// eventData.nodes.getId().join() +
// ' at (' + eventData.x + ', ' + eventData.y + ')');
});
ogma.events.on('nodesDragProgress', eventData => {
console.log('progress', eventData);
// console.log('Dragging node ' + eventData.node.getId() +
// ' to (' + eventData.x + ', ' + eventData.y + ')');
});
ogma.events.on('nodesDragEnd', eventData => {
console.log('end', eventData);
// console.log('Ending drag node ' + eventData.node.getId() +
// ' at (' + eventData.x + ', ' + eventData.y + ')');
});
// Generate a random graph and assign it to Ogma.
ogma.generate
.random({ nodes: 16, edges: 0 })
.then(graph => ogma.setGraph(graph))
.then(() => ogma.layouts.grid({ duration: 0, locate: true }));
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;
}