I have a GWT Canvas which I would like to size to the allocated width/
height of it's container Widget.   In my case I have a LayoutContainer
whose size is 30% width so it varies depending on the window size.

I can use onResize() to detect when the size has changed but how do I
size the canvas initially to the proper size?  When my class gets
constructed the size is zero so I can't do it in the constructor.

Is there an event/callback that I can use to detect the layout size at
startup so I can create the canvas and draw it with the appropriate
sizes?

In android land I have an onLayout() callback that is convenient for
this type of initialization.  Is there something similar for GWT?

Thanks,

Glenn

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