Cairo (gb.cairo)
This class is used for drawing on an 
Image object or any 
CairoSurface with the Cairo library.
Before starting drawing anything, you must call the 
Begin method by passing it the 
Image where you want to draw.
Then you can call any of the drawing methods to define paths, stroke them, fill them, and so on...
When your drawing is finished, you must call the 
End method.
This class is static.
Constants
Static properties
Static methods