Graphics.UI.Gtk.Selectors.HSV

A 'color wheel' widget

• Module available since Gtk+ version 2.14

Detail

HSV is the 'color wheel' part of a complete color selector widget. It allows to select a color by determining its HSV components in an intuitive way. Moving the selection around the outer ring changes the hue, and moving the selection point inside the inner triangle changes value and saturation.

Class Hierarchy

| GObject
| +----Object
| +----Widget
| +----HSV

Types

data HSV

Instances

Eq HSV

Ord HSV

GObjectClass HSV

HSVClass HSV

WidgetClass HSV

class WidgetClass o => HSVClass o

Instances

HSVClass HSV

castToHSV :: GObjectClass obj => obj -> HSV

toHSV :: HSVClass o => o -> HSV

Constructors

hsvNew :: IO HSV

Creates a new HSV color selector.

• Available since 2.14

Methods

hsvIsAdjusting

Arguments

:: HSVClass self

=> self

-> IO Bool

returns True if clients can ignore changes to the color value, since they may be transitory, or False if they should consider the color value status to be final.

An HSV color selector can be said to be adjusting if multiple rapid changes are being made to its value, for example, when the user is adjusting the value with the mouse. This function queries whether the HSV color selector is being adjusted or not.

hsvToRgb

Arguments

:: (Double, Double, Double)

(h, s, v) h - value for the hue s value for the saturation v value for the value

-> (Double, Double, Double)

(r, g, b) r - Return value for the red component g - Return value for the green component b - Return value for the blue component

Converts a color from HSV space to RGB. Input values must be in the [0.0, 1.0] range; output values will be in the same range.

rgbToHsv

Arguments

:: (Double, Double, Double)

(r, g, b) r value for the red component g value for the green component b value for the blue component

-> (Double, Double, Double)

(h, s, v) h - Return value for the hue s - Return value for the saturation v - Return value for the value

Converts a color from RGB space to HSV. Input values must be in the [0.0, 1.0] range; output values will be in the same range.

Attributes

hsvColor :: HSVClass self => Attr self (Double, Double, Double)

Color in an HSV color selector. Color component values must be in the [0.0, 1.0] range.

hsvMetrics :: HSVClass self => Attr self (Int, Int)

The size and ring width of an HSV color selector.

Signals

hsvChanged :: HSVClass self => Signal self (IO ())

hsvMove :: HSVClass self => Signal self (DirectionType -> IO ())