Rgba

class Rgba(pointer: <Error class: unknown class><<Error class: unknown class>>, cleaner: <Error class: unknown class>? = null)

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.

Skipped during bindings generation

parameter p2: RGBA

Constructors

Rgba

constructor()

Allocate a new Rgba.

constructor(scope: <Error class: unknown class>)

Allocate a new Rgba using the provided AutofreeScope.

constructor(red: <Error class: unknown class>, green: <Error class: unknown class>, blue: <Error class: unknown class>, alpha: <Error class: unknown class>)

Allocate a new Rgba.

constructor(red: <Error class: unknown class>, green: <Error class: unknown class>, blue: <Error class: unknown class>, alpha: <Error class: unknown class>, scope: <Error class: unknown class>)

Allocate a new Rgba using the provided AutofreeScope.

constructor(pointer: <Error class: unknown class><<Error class: unknown class>>, cleaner: <Error class: unknown class>? = null)

Types

Companion

object Companion

Properties

alpha

var alpha: <Error class: unknown class>

The opacity of the color from 0.0 for completely translucent to 1.0 for opaque

blue

var blue: <Error class: unknown class>

The intensity of the blue channel from 0.0 to 1.0 inclusive

gdkRGBAPointer

val gdkRGBAPointer: <Error class: unknown class><<Error class: unknown class>>

green

var green: <Error class: unknown class>

The intensity of the green channel from 0.0 to 1.0 inclusive

red

var red: <Error class: unknown class>

The intensity of the red channel from 0.0 to 1.0 inclusive

Functions

copy

fun copy(): Rgba

Makes a copy of a GdkRGBA.

free

fun free()

Frees a GdkRGBA.

hash

fun hash(): <Error class: unknown class>

A hash function suitable for using for a hash table that stores GdkRGBAs.

isClear

fun isClear(): Boolean

Checks if an @rgba value is transparent.

isOpaque

fun isOpaque(): Boolean

Checks if an @rgba value is opaque.

parse

fun parse(spec: String): Boolean

Parses a textual representation of a color.

toString

open override fun toString(): String

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.