GI.Gtk.Objects.HSV

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.

HSV has been deprecated together with ColorSelection, where it was used.

Exported types

newtype HSV

Memory-managed wrapper type.

Constructors

HSV (ManagedPtr HSV)

Instances

GObject HSV

Defined in GI.Gtk.Objects.HSV

Methods

gobjectType :: HSV -> IO GType

IsImplementorIface HSV

Defined in GI.Gtk.Objects.HSV

IsObject HSV

Defined in GI.Gtk.Objects.HSV

IsBuildable HSV

Defined in GI.Gtk.Objects.HSV

IsWidget HSV

Defined in GI.Gtk.Objects.HSV

IsHSV HSV

Defined in GI.Gtk.Objects.HSV

class GObject o => IsHSV o

Type class for types which can be safely cast to HSV, for instance with toHSV.

Instances

(GObject a, (UnknownAncestorError HSV a :: Constraint)) => IsHSV a

Defined in GI.Gtk.Objects.HSV

IsHSV HSV

Defined in GI.Gtk.Objects.HSV

toHSV :: (MonadIO m, IsHSV o) => o -> m HSV

Cast to HSV, for types for which this is known to be safe. For general casts, use castTo.

noHSV :: Maybe HSV

A convenience alias for Nothing :: Maybe HSV.

Methods

getColor

hSVGetColor

Arguments

:: (HasCallStack, MonadIO m, IsHSV a)

=> a

hsv: An HSV color selector

-> m (Double, Double, Double)

Queries the current color in an HSV color selector. Returned values will be in the [0.0, 1.0] range.

Since: 2.14

getMetrics

hSVGetMetrics

Arguments

:: (HasCallStack, MonadIO m, IsHSV a)

=> a

hsv: An HSV color selector

-> m (Int32, Int32)

Queries the size and ring width of an HSV color selector.

Since: 2.14

isAdjusting

hSVIsAdjusting

Arguments

:: (HasCallStack, MonadIO m, IsHSV a)

=> a

hsv: A HSV

-> m 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.

Since: 2.14

new

hSVNew

Arguments

:: (HasCallStack, MonadIO m)

=> m HSV

Returns: A newly-created HSV color selector.

Creates a new HSV color selector.

Since: 2.14

setColor

hSVSetColor

Arguments

:: (HasCallStack, MonadIO m, IsHSV a)

=> a

hsv: An HSV color selector

-> Double

h: Hue

-> Double

s: Saturation

-> Double

v: Value

-> m ()

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

Since: 2.14

setMetrics

hSVSetMetrics

Arguments

:: (HasCallStack, MonadIO m, IsHSV a)

=> a

hsv: An HSV color selector

-> Int32

size: Diameter for the hue ring

-> Int32

ringWidth: Width of the hue ring

-> m ()

Sets the size and ring width of an HSV color selector.

Since: 2.14

toRgb

hSVToRgb

Arguments

:: (HasCallStack, MonadIO m)

=> Double

h: Hue

-> Double

s: Saturation

-> Double

v: Value

-> m (Double, Double, Double)

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.

Since: 2.14

Signals

changed

type C_HSVChangedCallback = Ptr () -> Ptr () -> IO ()

Type for the callback on the (unwrapped) C side.

type HSVChangedCallback = IO ()

No description available in the introspection data.

afterHSVChanged :: (IsHSV a, MonadIO m) => a -> HSVChangedCallback -> m SignalHandlerId

Connect a signal handler for the “changed” signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after hSV #changed callback

genClosure_HSVChanged :: HSVChangedCallback -> IO Closure

Wrap the callback into a Closure.

mk_HSVChangedCallback :: C_HSVChangedCallback -> IO (FunPtr C_HSVChangedCallback)

Generate a function pointer callable from C code, from a C_HSVChangedCallback.

noHSVChangedCallback :: Maybe HSVChangedCallback

A convenience synonym for Nothing :: Maybe HSVChangedCallback.

onHSVChanged :: (IsHSV a, MonadIO m) => a -> HSVChangedCallback -> m SignalHandlerId

Connect a signal handler for the “changed” signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on hSV #changed callback

wrap_HSVChangedCallback :: HSVChangedCallback -> C_HSVChangedCallback

Wrap a HSVChangedCallback into a C_HSVChangedCallback.

move

type C_HSVMoveCallback = Ptr () -> CUInt -> Ptr () -> IO ()

Type for the callback on the (unwrapped) C side.

type HSVMoveCallback = DirectionType -> IO ()

No description available in the introspection data.

afterHSVMove :: (IsHSV a, MonadIO m) => a -> HSVMoveCallback -> m SignalHandlerId

Connect a signal handler for the “move” signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after hSV #move callback

genClosure_HSVMove :: HSVMoveCallback -> IO Closure

Wrap the callback into a Closure.

mk_HSVMoveCallback :: C_HSVMoveCallback -> IO (FunPtr C_HSVMoveCallback)

Generate a function pointer callable from C code, from a C_HSVMoveCallback.

noHSVMoveCallback :: Maybe HSVMoveCallback

A convenience synonym for Nothing :: Maybe HSVMoveCallback.

onHSVMove :: (IsHSV a, MonadIO m) => a -> HSVMoveCallback -> m SignalHandlerId

Connect a signal handler for the “move” signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on hSV #move callback

wrap_HSVMoveCallback :: HSVMoveCallback -> C_HSVMoveCallback

Wrap a HSVMoveCallback into a C_HSVMoveCallback.