Sets the source pattern within cr to an opaque color.
This opaque color will then be used for any subsequent
drawing operation until a new source pattern is set.
The color components are floating point numbers in the range
0 to 1. If the values passed in are outside that range,
they will be clamped.
The default source pattern is opaque black,
(that is, it is equivalent to setSourceRGB(0.0, 0.0, 0.0)).
Sets the source pattern within cr to an opaque color. This opaque color will then be used for any subsequent drawing operation until a new source pattern is set.
The color components are floating point numbers in the range 0 to 1. If the values passed in are outside that range, they will be clamped.
The default source pattern is opaque black, (that is, it is equivalent to setSourceRGB(0.0, 0.0, 0.0)).