The opacity of the color from 0.0 for completely translucent to 1.0 for opaque
The intensity of the blue channel from 0.0 to 1.0 inclusive
The intensity of the green channel from 0.0 to 1.0 inclusive
The intensity of the red channel from 0.0 to 1.0 inclusive
Frees a GdkRGBA.
A hash function suitable for using for a hash
table that stores GdkRGBAs.
Checks if an rgba value is transparent.
That is, drawing with the value would not produce any change.
Checks if an rgba value is opaque.
That is, drawing with the value will not retain any results from previous contents.
Parses a textual representation of a color.
The string can be either one of:
Where “r”, “g”, “b” and “a” are respectively the red, green, blue and alpha color values. In the last two cases, “r”, “g”, and “b” are either integers in the range 0 to 255 or percentage values in the range 0% to 100%, and a is a floating point value in the range 0 to 1.
the string specifying the color
Returns a textual specification of rgba in the form
rgb(r,g,b) or rgba(r,g,b,a), where “r”, “g”, “b” and
“a” represent the red, green, blue and alpha values
respectively. “r”, “g”, and “b” are represented as integers
in the range 0 to 255, and “a” is represented as a floating
point value in the range 0 to 1.
These string forms are string forms that are supported by
the CSS3 colors module, and can be parsed by [methodGdk.RGBA.parse].
Note that this string representation may lose some precision, since “r”, “g” and “b” are represented as 8-bit integers. If this is a concern, you should use a different representation.
A
GdkRGBAis used to represent a color, in a way that is compatible with cairo’s notion of color.GdkRGBAis a convenient way to pass colors around. It’s based on cairo’s way to deal with colors and mirrors its behavior. All values are in the range from 0.0 to 1.0 inclusive. So the color (0.0, 0.0, 0.0, 0.0) represents transparent black and (1.0, 1.0, 1.0, 1.0) is opaque white. Other values will be clamped to this range when drawing.