GI.Gtk.Objects.GesturePan

GesturePan is a Gesture implementation able to recognize pan gestures, those are drags that are locked to happen along one axis. The axis that a GesturePan handles is defined at construct time, and can be changed through gesturePanSetOrientation.

When the gesture starts to be recognized, GesturePan will attempt to determine as early as possible whether the sequence is moving in the expected direction, and denying the sequence if this does not happen.

Once a panning gesture along the expected axis is recognized, the GesturePan::pan signal will be emitted as input events are received, containing the offset in the given axis.

Exported types

newtype GesturePan

Constructors

GesturePan (ManagedPtr GesturePan)

Instances

GObject GesturePan

Methods

gobjectType :: GesturePan -> IO GType

IsObject GesturePan

IsGestureSingle GesturePan

IsGestureDrag GesturePan

IsGesture GesturePan

IsEventController GesturePan

IsGesturePan GesturePan

class GObject o => IsGesturePan o

Instances

(GObject a, UnknownAncestorError Constraint GesturePan a) => IsGesturePan a

IsGesturePan GesturePan

toGesturePan :: (MonadIO m, IsGesturePan o) => o -> m GesturePan

noGesturePan :: Maybe GesturePan

Methods

getOrientation

gesturePanGetOrientation

Arguments

:: (HasCallStack, MonadIO m, IsGesturePan a)

=> a

gesture: A GesturePan

-> m Orientation

Returns: the expected orientation for pan gestures

Returns the orientation of the pan gestures that this gesture expects.

Since: 3.14

new

gesturePanNew

Arguments

:: (HasCallStack, MonadIO m, IsWidget a)

=> a

widget: a Widget

-> Orientation

orientation: expected orientation

-> m GesturePan

Returns: a newly created GesturePan

Returns a newly created Gesture that recognizes pan gestures.

Since: 3.14

setOrientation

gesturePanSetOrientation

Arguments

:: (HasCallStack, MonadIO m, IsGesturePan a)

=> a

gesture: A GesturePan

-> Orientation

orientation: expected orientation

-> m ()

Sets the orientation to be expected on pan gestures.

Since: 3.14

Properties

orientation

constructGesturePanOrientation :: IsGesturePan o => Orientation -> IO (GValueConstruct o)

getGesturePanOrientation :: (MonadIO m, IsGesturePan o) => o -> m Orientation

setGesturePanOrientation :: (MonadIO m, IsGesturePan o) => o -> Orientation -> m ()

Signals

pan

type C_GesturePanPanCallback = Ptr () -> CUInt -> CDouble -> Ptr () -> IO ()

type GesturePanPanCallback = PanDirection -> Double -> IO ()

afterGesturePanPan :: (IsGesturePan a, MonadIO m) => a -> GesturePanPanCallback -> m SignalHandlerId

genClosure_GesturePanPan :: GesturePanPanCallback -> IO Closure

mk_GesturePanPanCallback :: C_GesturePanPanCallback -> IO (FunPtr C_GesturePanPanCallback)

noGesturePanPanCallback :: Maybe GesturePanPanCallback

onGesturePanPan :: (IsGesturePan a, MonadIO m) => a -> GesturePanPanCallback -> m SignalHandlerId

wrap_GesturePanPanCallback :: GesturePanPanCallback -> Ptr () -> CUInt -> CDouble -> Ptr () -> IO ()