| Copyright | Will Thompson and Iñaki García Etxebarria |
|---|---|
| License | LGPL-2.1 |
| Maintainer | Iñaki García Etxebarria |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
GI.Gtk.Objects.GestureSwipe
Description
GtkGestureSwipe is a GtkGesture for swipe gestures.
After a press/move/.../move/release sequence happens, the GestureSwipe::swipe signal will be emitted, providing the velocity and directionality of the sequence at the time it was lifted.
If the velocity is desired in intermediate points,
gestureSwipeGetVelocity can be called in a
Gesture::update handler.
All velocities are reported in pixels/sec units.
Synopsis
- newtype GestureSwipe = GestureSwipe (ManagedPtr GestureSwipe)
- class (GObject o, IsDescendantOf GestureSwipe o) => IsGestureSwipe o
- toGestureSwipe :: (MonadIO m, IsGestureSwipe o) => o -> m GestureSwipe
- gestureSwipeGetVelocity :: (HasCallStack, MonadIO m, IsGestureSwipe a) => a -> m (Bool, Double, Double)
- gestureSwipeNew :: (HasCallStack, MonadIO m) => m GestureSwipe
- type GestureSwipeSwipeCallback = Double -> Double -> IO ()
- afterGestureSwipeSwipe :: (IsGestureSwipe a, MonadIO m) => a -> ((?self :: a) => GestureSwipeSwipeCallback) -> m SignalHandlerId
- onGestureSwipeSwipe :: (IsGestureSwipe a, MonadIO m) => a -> ((?self :: a) => GestureSwipeSwipeCallback) -> m SignalHandlerId
Exported types
newtype GestureSwipe Source #
Memory-managed wrapper type.
Constructors
| GestureSwipe (ManagedPtr GestureSwipe) |
Instances
| Eq GestureSwipe Source # | |
Defined in GI.Gtk.Objects.GestureSwipe | |
| GObject GestureSwipe Source # | |
Defined in GI.Gtk.Objects.GestureSwipe | |
| ManagedPtrNewtype GestureSwipe Source # | |
Defined in GI.Gtk.Objects.GestureSwipe Methods toManagedPtr :: GestureSwipe -> ManagedPtr GestureSwipe | |
| TypedObject GestureSwipe Source # | |
Defined in GI.Gtk.Objects.GestureSwipe | |
| HasParentTypes GestureSwipe Source # | |
Defined in GI.Gtk.Objects.GestureSwipe | |
| IsGValue (Maybe GestureSwipe) Source # | Convert |
Defined in GI.Gtk.Objects.GestureSwipe Methods gvalueGType_ :: IO GType gvalueSet_ :: Ptr GValue -> Maybe GestureSwipe -> IO () gvalueGet_ :: Ptr GValue -> IO (Maybe GestureSwipe) | |
| type ParentTypes GestureSwipe Source # | |
Defined in GI.Gtk.Objects.GestureSwipe | |
class (GObject o, IsDescendantOf GestureSwipe o) => IsGestureSwipe o Source #
Type class for types which can be safely cast to GestureSwipe, for instance with toGestureSwipe.
Instances
| (GObject o, IsDescendantOf GestureSwipe o) => IsGestureSwipe o Source # | |
Defined in GI.Gtk.Objects.GestureSwipe | |
toGestureSwipe :: (MonadIO m, IsGestureSwipe o) => o -> m GestureSwipe Source #
Cast to GestureSwipe, for types for which this is known to be safe. For general casts, use castTo.
Methods
Click to display all available methods, including inherited ones
Methods
bindProperty, bindPropertyFull, forceFloating, freezeNotify, getv, group, handlesSequence, isActive, isFloating, isGroupedWith, isRecognized, notify, notifyByPspec, ref, refSink, reset, runDispose, stealData, stealQdata, thawNotify, ungroup, unref, watchClosure.
Getters
getBoundingBox, getBoundingBoxCenter, getButton, getCurrentButton, getCurrentEvent, getCurrentEventDevice, getCurrentEventState, getCurrentEventTime, getCurrentSequence, getData, getDevice, getExclusive, getGroup, getLastEvent, getLastUpdatedSequence, getName, getPoint, getPropagationLimit, getPropagationPhase, getProperty, getQdata, getSequenceState, getSequences, getTouchOnly, getVelocity, getWidget.
Setters
setButton, setData, setDataFull, setExclusive, setName, setPropagationLimit, setPropagationPhase, setProperty, setSequenceState, setState, setStaticName, setTouchOnly.
getVelocity
gestureSwipeGetVelocity Source #
Arguments
| :: (HasCallStack, MonadIO m, IsGestureSwipe a) | |
| => a |
|
| -> m (Bool, Double, Double) | Returns: whether velocity could be calculated |
Gets the current velocity.
If the gesture is recognized, this function returns True and fills
in velocityX and velocityY with the recorded velocity, as per the
last events processed.
new
Arguments
| :: (HasCallStack, MonadIO m) | |
| => m GestureSwipe | Returns: a newly created |
Returns a newly created GtkGesture that recognizes swipes.
Signals
swipe
type GestureSwipeSwipeCallback Source #
Arguments
| = Double |
|
| -> Double |
|
| -> IO () |
Emitted when the recognized gesture is finished.
Velocity and direction are a product of previously recorded events.
afterGestureSwipeSwipe :: (IsGestureSwipe a, MonadIO m) => a -> ((?self :: a) => GestureSwipeSwipeCallback) -> m SignalHandlerId Source #
Connect a signal handler for the swipe signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after gestureSwipe #swipe callback
By default the object invoking the signal is not passed to the callback.
If you need to access it, you can use the implit ?self parameter.
Note that this requires activating the ImplicitParams GHC extension.
onGestureSwipeSwipe :: (IsGestureSwipe a, MonadIO m) => a -> ((?self :: a) => GestureSwipeSwipeCallback) -> m SignalHandlerId Source #
Connect a signal handler for the swipe signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on gestureSwipe #swipe callback