Controlling Linux Compiz Brightness Programmatically with Python or Vala

Several laptops on the market have problems with Linux for brightness controls. However, recently I found out that you c开发者_如何转开发an use CompizConfig settings to dim at least a particular window. Many people, however, want to dim all windows. I know Compiz can do this in the API somewhere because look what happens when you do Super + Tab in Compiz.

So this got me thinking...what I need to build is a GNOME applet in either Python, or perhaps this new Vala language, that interfaces with the Compiz API and lets me dim the entire screen.

Does anyone know where I might find some programming resources to learn how to use Compiz API in Python or Vala to dim the screen?

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You want to look into gnome-compiz especially into gtk-window-decorator and gnome-xgl-settings.