Insets for custom Synth look and feel

Question

I'm implementing a custom Look & Feel using Synth for my application - basically providing custom versions of SynthStyle, SynthPainter and SynthStyleFactory.

I am not using any XML, i.e. everything is done through the Java API. In general this is working just fine.

The best way to set appropriate insets is however proving a little tricky. I can see various options:

• Override getInsets for SynthStyle to return specific insets for each Region
• Apply a border to components using SynthStyle.installDefaults
• Set all insets to (0,0,0,0) and compensate in the painting methods
• Create new ComponentUI delegates

What would be the best approach and why?