GI.Gtk.Objects.GestureRotate

GestureRotate is a Gesture implementation able to recognize 2-finger rotations, whenever the angle between both handled sequences changes, the GestureRotate::angle-changed signal is emitted.

Exported types

newtype GestureRotate

Constructors

GestureRotate (ManagedPtr GestureRotate)

Instances

GObject GestureRotate

Methods

gobjectType :: GestureRotate -> IO GType

IsObject GestureRotate

IsGesture GestureRotate

IsEventController GestureRotate

IsGestureRotate GestureRotate

((~) * info (ResolveGestureRotateMethod t GestureRotate), MethodInfo * info GestureRotate p) => IsLabel t (GestureRotate -> p)

Methods

fromLabel :: Proxy# Symbol t -> GestureRotate -> p

((~) * info (ResolveGestureRotateMethod t GestureRotate), MethodInfo * info GestureRotate p) => IsLabelProxy t (GestureRotate -> p)

Methods

fromLabelProxy :: Proxy Symbol t -> GestureRotate -> p

HasAttributeList * GestureRotate

type AttributeList GestureRotate

type AttributeList GestureRotate

type SignalList GestureRotate

type SignalList GestureRotate

class GObject o => IsGestureRotate o

Instances

(GObject a, UnknownAncestorError Constraint GestureRotate a) => IsGestureRotate a

IsGestureRotate GestureRotate

toGestureRotate :: IsGestureRotate o => o -> IO GestureRotate

noGestureRotate :: Maybe GestureRotate

Methods

getAngleDelta

data GestureRotateGetAngleDeltaMethodInfo

Instances

((~) * signature (m Double), MonadIO m, IsGestureRotate a) => MethodInfo * GestureRotateGetAngleDeltaMethodInfo a signature

Methods

overloadedMethod :: MethodProxy GestureRotateGetAngleDeltaMethodInfo a -> signature -> s

gestureRotateGetAngleDelta

Arguments

:: (HasCallStack, MonadIO m, IsGestureRotate a)

=> a

gesture: a GestureRotate

-> m Double

Returns: the angle delta in radians

If gesture is active, this function returns the angle difference in radians since the gesture was first recognized. If gesture is not active, 0 is returned.

Since: 3.14

new

gestureRotateNew

Arguments

:: (HasCallStack, MonadIO m, IsWidget a)

=> a

widget: a Widget

-> m GestureRotate

Returns: a newly created GestureRotate

Returns a newly created Gesture that recognizes 2-touch rotation gestures.

Since: 3.14

Signals

angleChanged

type C_GestureRotateAngleChangedCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO ()

type GestureRotateAngleChangedCallback = Double -> Double -> IO ()

data GestureRotateAngleChangedSignalInfo

Instances

SignalInfo GestureRotateAngleChangedSignalInfo

Associated Types

type HaskellCallbackType GestureRotateAngleChangedSignalInfo :: *

Methods

connectSignal :: GObject o => SignalProxy o GestureRotateAngleChangedSignalInfo -> o -> HaskellCallbackType GestureRotateAngleChangedSignalInfo -> SignalConnectMode -> IO SignalHandlerId

type HaskellCallbackType GestureRotateAngleChangedSignalInfo

type HaskellCallbackType GestureRotateAngleChangedSignalInfo = GestureRotateAngleChangedCallback

afterGestureRotateAngleChanged :: (GObject a, MonadIO m) => a -> GestureRotateAngleChangedCallback -> m SignalHandlerId

genClosure_GestureRotateAngleChanged :: GestureRotateAngleChangedCallback -> IO Closure

mk_GestureRotateAngleChangedCallback :: C_GestureRotateAngleChangedCallback -> IO (FunPtr C_GestureRotateAngleChangedCallback)

noGestureRotateAngleChangedCallback :: Maybe GestureRotateAngleChangedCallback

onGestureRotateAngleChanged :: (GObject a, MonadIO m) => a -> GestureRotateAngleChangedCallback -> m SignalHandlerId

wrap_GestureRotateAngleChangedCallback :: GestureRotateAngleChangedCallback -> Ptr () -> CDouble -> CDouble -> Ptr () -> IO ()