Context.setSourceRgba

Sets the source pattern within cr to a translucent color. This color will then be used for any subsequent drawing operation until a new source pattern is set. The color and alpha 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 cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0)).

class Context
void
setSourceRgba
(
double red
,
double green
,
double blue
,
double alpha
)

Parameters

red double

red component of color

green double

green component of color

blue double

blue component of color

alpha double

alpha component of color

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