| Copyright | Will Thompson Iñaki García Etxebarria and Jonas Platte |
|---|---|
| License | LGPL-2.1 |
| Maintainer | Iñaki García Etxebarria |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
GI.Gtk.Objects.GestureDrag
Description
GestureDrag is a Gesture implementation that recognizes drag
operations. The drag operation itself can be tracked throught the
dragBegin, dragUpdate and
dragEnd signals, or the relevant coordinates be
extracted through gestureDragGetOffset and
gestureDragGetStartPoint.
Synopsis
- newtype GestureDrag = GestureDrag (ManagedPtr GestureDrag)
- class (GObject o, IsDescendantOf GestureDrag o) => IsGestureDrag o
- toGestureDrag :: (MonadIO m, IsGestureDrag o) => o -> m GestureDrag
- gestureDragGetOffset :: (HasCallStack, MonadIO m, IsGestureDrag a) => a -> m (Bool, Double, Double)
- gestureDragGetStartPoint :: (HasCallStack, MonadIO m, IsGestureDrag a) => a -> m (Bool, Double, Double)
- gestureDragNew :: (HasCallStack, MonadIO m, IsWidget a) => a -> m GestureDrag
- type C_GestureDragDragBeginCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO ()
- type GestureDragDragBeginCallback = Double -> Double -> IO ()
- afterGestureDragDragBegin :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragBeginCallback -> m SignalHandlerId
- genClosure_GestureDragDragBegin :: MonadIO m => GestureDragDragBeginCallback -> m (GClosure C_GestureDragDragBeginCallback)
- mk_GestureDragDragBeginCallback :: C_GestureDragDragBeginCallback -> IO (FunPtr C_GestureDragDragBeginCallback)
- noGestureDragDragBeginCallback :: Maybe GestureDragDragBeginCallback
- onGestureDragDragBegin :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragBeginCallback -> m SignalHandlerId
- wrap_GestureDragDragBeginCallback :: GestureDragDragBeginCallback -> C_GestureDragDragBeginCallback
- type C_GestureDragDragEndCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO ()
- type GestureDragDragEndCallback = Double -> Double -> IO ()
- afterGestureDragDragEnd :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragEndCallback -> m SignalHandlerId
- genClosure_GestureDragDragEnd :: MonadIO m => GestureDragDragEndCallback -> m (GClosure C_GestureDragDragEndCallback)
- mk_GestureDragDragEndCallback :: C_GestureDragDragEndCallback -> IO (FunPtr C_GestureDragDragEndCallback)
- noGestureDragDragEndCallback :: Maybe GestureDragDragEndCallback
- onGestureDragDragEnd :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragEndCallback -> m SignalHandlerId
- wrap_GestureDragDragEndCallback :: GestureDragDragEndCallback -> C_GestureDragDragEndCallback
- type C_GestureDragDragUpdateCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO ()
- type GestureDragDragUpdateCallback = Double -> Double -> IO ()
- afterGestureDragDragUpdate :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragUpdateCallback -> m SignalHandlerId
- genClosure_GestureDragDragUpdate :: MonadIO m => GestureDragDragUpdateCallback -> m (GClosure C_GestureDragDragUpdateCallback)
- mk_GestureDragDragUpdateCallback :: C_GestureDragDragUpdateCallback -> IO (FunPtr C_GestureDragDragUpdateCallback)
- noGestureDragDragUpdateCallback :: Maybe GestureDragDragUpdateCallback
- onGestureDragDragUpdate :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragUpdateCallback -> m SignalHandlerId
- wrap_GestureDragDragUpdateCallback :: GestureDragDragUpdateCallback -> C_GestureDragDragUpdateCallback
Exported types
newtype GestureDrag Source #
Memory-managed wrapper type.
Constructors
| GestureDrag (ManagedPtr GestureDrag) |
Instances
| Eq GestureDrag Source # | |
Defined in GI.Gtk.Objects.GestureDrag | |
| GObject GestureDrag Source # | |
Defined in GI.Gtk.Objects.GestureDrag | |
| ManagedPtrNewtype GestureDrag Source # | |
Defined in GI.Gtk.Objects.GestureDrag Methods toManagedPtr :: GestureDrag -> ManagedPtr GestureDrag | |
| TypedObject GestureDrag Source # | |
Defined in GI.Gtk.Objects.GestureDrag | |
| HasParentTypes GestureDrag Source # | |
Defined in GI.Gtk.Objects.GestureDrag | |
| IsGValue (Maybe GestureDrag) Source # | Convert |
Defined in GI.Gtk.Objects.GestureDrag Methods gvalueGType_ :: IO GType gvalueSet_ :: Ptr GValue -> Maybe GestureDrag -> IO () gvalueGet_ :: Ptr GValue -> IO (Maybe GestureDrag) | |
| type ParentTypes GestureDrag Source # | |
Defined in GI.Gtk.Objects.GestureDrag | |
class (GObject o, IsDescendantOf GestureDrag o) => IsGestureDrag o Source #
Type class for types which can be safely cast to GestureDrag, for instance with toGestureDrag.
Instances
| (GObject o, IsDescendantOf GestureDrag o) => IsGestureDrag o Source # | |
Defined in GI.Gtk.Objects.GestureDrag | |
toGestureDrag :: (MonadIO m, IsGestureDrag o) => o -> m GestureDrag Source #
Cast to GestureDrag, 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, handleEvent, handlesSequence, isActive, isFloating, isGroupedWith, isRecognized, notify, notifyByPspec, ref, refSink, reset, runDispose, stealData, stealQdata, thawNotify, ungroup, unref, watchClosure.
Getters
getBoundingBox, getBoundingBoxCenter, getButton, getCurrentButton, getCurrentSequence, getData, getDevice, getExclusive, getGroup, getLastEvent, getLastUpdatedSequence, getOffset, getPoint, getPropagationPhase, getProperty, getQdata, getSequenceState, getSequences, getStartPoint, getTouchOnly, getWidget, getWindow.
Setters
setButton, setData, setDataFull, setExclusive, setPropagationPhase, setProperty, setSequenceState, setState, setTouchOnly, setWindow.
getOffset
Arguments
| :: (HasCallStack, MonadIO m, IsGestureDrag a) | |
| => a |
|
| -> m (Bool, Double, Double) | Returns: |
If the gesture is active, this function returns True and
fills in x and y with the coordinates of the current point,
as an offset to the starting drag point.
Since: 3.14
getStartPoint
gestureDragGetStartPoint Source #
Arguments
| :: (HasCallStack, MonadIO m, IsGestureDrag a) | |
| => a |
|
| -> m (Bool, Double, Double) | Returns: |
If the gesture is active, this function returns True
and fills in x and y with the drag start coordinates,
in window-relative coordinates.
Since: 3.14
new
Arguments
| :: (HasCallStack, MonadIO m, IsWidget a) | |
| => a |
|
| -> m GestureDrag | Returns: a newly created |
Returns a newly created Gesture that recognizes drags.
Since: 3.14
Signals
dragBegin
type C_GestureDragDragBeginCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO () Source #
Type for the callback on the (unwrapped) C side.
type GestureDragDragBeginCallback Source #
Arguments
| = Double |
|
| -> Double |
|
| -> IO () |
This signal is emitted whenever dragging starts.
Since: 3.14
afterGestureDragDragBegin :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragBeginCallback -> m SignalHandlerId Source #
Connect a signal handler for the dragBegin signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after gestureDrag #dragBegin callback
genClosure_GestureDragDragBegin :: MonadIO m => GestureDragDragBeginCallback -> m (GClosure C_GestureDragDragBeginCallback) Source #
Wrap the callback into a GClosure.
mk_GestureDragDragBeginCallback :: C_GestureDragDragBeginCallback -> IO (FunPtr C_GestureDragDragBeginCallback) Source #
Generate a function pointer callable from C code, from a C_GestureDragDragBeginCallback.
noGestureDragDragBeginCallback :: Maybe GestureDragDragBeginCallback Source #
A convenience synonym for Nothing :: Maybe GestureDragDragBeginCallback
onGestureDragDragBegin :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragBeginCallback -> m SignalHandlerId Source #
Connect a signal handler for the dragBegin signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on gestureDrag #dragBegin callback
wrap_GestureDragDragBeginCallback :: GestureDragDragBeginCallback -> C_GestureDragDragBeginCallback Source #
Wrap a GestureDragDragBeginCallback into a C_GestureDragDragBeginCallback.
dragEnd
type C_GestureDragDragEndCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO () Source #
Type for the callback on the (unwrapped) C side.
type GestureDragDragEndCallback Source #
Arguments
| = Double |
|
| -> Double |
|
| -> IO () |
This signal is emitted whenever the dragging is finished.
Since: 3.14
afterGestureDragDragEnd :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragEndCallback -> m SignalHandlerId Source #
Connect a signal handler for the dragEnd signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after gestureDrag #dragEnd callback
genClosure_GestureDragDragEnd :: MonadIO m => GestureDragDragEndCallback -> m (GClosure C_GestureDragDragEndCallback) Source #
Wrap the callback into a GClosure.
mk_GestureDragDragEndCallback :: C_GestureDragDragEndCallback -> IO (FunPtr C_GestureDragDragEndCallback) Source #
Generate a function pointer callable from C code, from a C_GestureDragDragEndCallback.
noGestureDragDragEndCallback :: Maybe GestureDragDragEndCallback Source #
A convenience synonym for Nothing :: Maybe GestureDragDragEndCallback
onGestureDragDragEnd :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragEndCallback -> m SignalHandlerId Source #
Connect a signal handler for the dragEnd signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on gestureDrag #dragEnd callback
wrap_GestureDragDragEndCallback :: GestureDragDragEndCallback -> C_GestureDragDragEndCallback Source #
Wrap a GestureDragDragEndCallback into a C_GestureDragDragEndCallback.
dragUpdate
type C_GestureDragDragUpdateCallback = Ptr () -> CDouble -> CDouble -> Ptr () -> IO () Source #
Type for the callback on the (unwrapped) C side.
type GestureDragDragUpdateCallback Source #
Arguments
| = Double |
|
| -> Double |
|
| -> IO () |
This signal is emitted whenever the dragging point moves.
Since: 3.14
afterGestureDragDragUpdate :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragUpdateCallback -> m SignalHandlerId Source #
Connect a signal handler for the dragUpdate signal, to be run after the default handler. When overloading is enabled, this is equivalent to
after gestureDrag #dragUpdate callback
genClosure_GestureDragDragUpdate :: MonadIO m => GestureDragDragUpdateCallback -> m (GClosure C_GestureDragDragUpdateCallback) Source #
Wrap the callback into a GClosure.
mk_GestureDragDragUpdateCallback :: C_GestureDragDragUpdateCallback -> IO (FunPtr C_GestureDragDragUpdateCallback) Source #
Generate a function pointer callable from C code, from a C_GestureDragDragUpdateCallback.
noGestureDragDragUpdateCallback :: Maybe GestureDragDragUpdateCallback Source #
A convenience synonym for Nothing :: Maybe GestureDragDragUpdateCallback
onGestureDragDragUpdate :: (IsGestureDrag a, MonadIO m) => a -> GestureDragDragUpdateCallback -> m SignalHandlerId Source #
Connect a signal handler for the dragUpdate signal, to be run before the default handler. When overloading is enabled, this is equivalent to
on gestureDrag #dragUpdate callback