Snapshot the paintable. The given @width and @height are
guaranteed to be larger than 0.0. The resulting snapshot must modify
only the area in the rectangle from (0,0) to (width, height).
This is the only function that must be implemented for this interface.
Snapshot the paintable. The given @width and @height are guaranteed to be larger than 0.0. The resulting snapshot must modify only the area in the rectangle from (0,0) to (width, height). This is the only function that must be implemented for this interface.