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I want to extend Context2d in order to create a specific method that can be invoked by context.myMethod();

Using this class:

class MyContext extends Context2d {
    public myMethod();
}

BUT I'm creating the canvas by Canvas canvas = Canvas.createIfSupported(); and thus I would get the Context2d by canvas.getContext2d();

How can I now force the latest method to return MyContext class which extends the Context2d, as there is no setContext2d() on a canvas element...

Jarrod
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membersound
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1 Answers1

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Context2d is a JavaScriptObject so all you need is to cast it to MyContext and/or use the cast() method:

MyContext ctx = canvas.getContext2d().cast();
Thomas Broyer
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