The drawing API background object

Summary: Documentation for the drawing API background object that can be added to your charts and provides a way for you to give your charts a 'manual' background. It's useful when you're manipulating the grid and the built-in background options do not suffice.

[No canvas support]

The background object allows you to add a background to your charts should you need to. An example use might be when you want the background grid to be clickable (ie have a tooltip). In this case you can use the Background drawing API object (and its own margin settings) to make a grid that spans the whole of the desired area.

The Background object can have its own tooltip and also its own click and mousemove events so if you want to make the whole chart area clickable this is one way that you can do that.

Usage example

    new RGraph.Drawing.Background({
        id: 'cvs',
        options: {
            title: 'The background object',
            marginTop: 55,
            tooltips: ['The drawing API background object'],
            textSize: 18,
            textBold: true