Background color

We can change the background to a custom color at the initialisation of Ogma, or after with the setOptions method.

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="../build/ogma.min.js"></script>
  <style>
    #graph-container { top: 0; bottom: 0; left: 0; right: 0; position: absolute; margin: 0; overflow: hidden; }
  </style>
</head>
<body>
  <div id="graph-container"></div>

<script>
'use strict';

var ogma = new Ogma({
  container: 'graph-container',
  options: {
    backgroundColor: '#514F6A'
  }
});

// Change the background after the initialization of Ogma.
ogma.setOptions({
  backgroundColor: '#514F6A'
});

ogma.generate.random({ nodes: 10, edges: 20 }).then(function(g) {
  ogma.setGraph(g);
  ogma.view.locateGraph();
});

ogma.styles.addNodeRule({
  color: 'white',
  text: {
    color: 'white',
    content: function (n) {return 'Node ' + n.getId()}
  }
});

ogma.styles.addEdgeRule({
  color: null,
  text: {
    color: 'white',
    content: function (e) {return 'Edge ' + e.getId()}
  }
});

ogma.styles.setHoveredNodeAttributes({
  text: {
    backgroundColor: '#0A091D'
  }
});

ogma.styles.setHoveredEdgeAttributes({
  text: {
    backgroundColor: '#0A091D'
  }
});

</script>
</body>
</html>