Double drawing of controls in Android

[chrfalch]

If you create composite controls (controls containing other controls) with custom drawing you might experience that Android is drawing the child controls twice if you are scaling or using padding.

Reproduction:

1. Create a new project with a new custom control
2. Add an inner image and set its scaling to 2
3. Run on Android

Observe that the image is drawn twice, one with and one without scaling.