IIUC you need the setBounds to control the drawables paint() method, while for the draw() you might not need it.
But in the past I had often unexpected results because of this duality between Drawable and Component. Seems the setBoundsToFit and other methods that modify the transformation moves the result out of the setBounds() area. I know that is to be expected, but I didn’t understand how it is used in a controlled manner (and unusally I have no trouble understanding matrices and transformations).
This is the second reason why I filed this feature request, feel free to support it here: