RGBA

A GdkRGBA is used to represent a color, in a way that is compatible with cairo’s notion of color.

GdkRGBA is 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.

Constructors

this this(GdkRGBA* gdkRGBA, bool ownedRef): Sets our main struct and passes it to the parent class.
this this()
this(double red, double green, double blue, double alpha): Creates a new RGBA Color

Destructor

~this ~this(): Undocumented in source.

Members

Functions

copy RGBA copy(): Makes a copy of a GdkRGBA.
equal bool equal(RGBA p2): Compares two GdkRGBA colors.
free void free(): Frees a GdkRGBA.
getRGBAStruct GdkRGBA* getRGBAStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
hash uint hash(): A hash function suitable for using for a hash table that stores GdkRGBAs.
isClear bool isClear(): Checks if an @rgba value is transparent.
isOpaque bool isOpaque(): Checks if an @rgba value is opaque.
parse bool parse(string spec): Parses a textual representation of a color.
toString string toString(): 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.

Properties

alpha float alpha [@property getter]
float alpha [@property setter]: The opacity of the color from 0.0 for completely translucent to 1.0 for opaque
blue float blue [@property getter]
float blue [@property setter]: The intensity of the blue channel from 0.0 to 1.0 inclusive
green float green [@property getter]
float green [@property setter]: The intensity of the green channel from 0.0 to 1.0 inclusive
red float red [@property getter]
float red [@property setter]: The intensity of the red channel from 0.0 to 1.0 inclusive

Static functions

getType GType getType()

Variables

gdkRGBA GdkRGBA* gdkRGBA;: the main Gtk struct
ownedRef bool ownedRef;: Undocumented in source.