GI.Gtk.Objects.GestureSingle

GestureSingle is a subclass of Gesture, optimized (although not restricted) for dealing with mouse and single-touch gestures. Under interaction, these gestures stick to the first interacting sequence, which is accessible through gestureSingleGetCurrentSequence while the gesture is being interacted with.

By default gestures react to both BUTTON_PRIMARY and touch events, gestureSingleSetTouchOnly can be used to change the touch behavior. Callers may also specify a different mouse button number to interact with through gestureSingleSetButton, or react to any mouse button by setting 0. While the gesture is active, the button being currently pressed can be known through gestureSingleGetCurrentButton.

Exported types

newtype GestureSingle

Constructors

GestureSingle (ManagedPtr GestureSingle)

Instances

GObject GestureSingle

Methods

gobjectType :: GestureSingle -> IO GType

IsObject GestureSingle

IsGestureSingle GestureSingle

IsGesture GestureSingle

IsEventController GestureSingle

class GObject o => IsGestureSingle o

Instances

(GObject a, UnknownAncestorError Constraint GestureSingle a) => IsGestureSingle a

IsGestureSingle GestureSingle

IsGestureSingle GestureDrag

IsGestureSingle GestureLongPress

IsGestureSingle GestureMultiPress

IsGestureSingle GestureSwipe

IsGestureSingle GesturePan

toGestureSingle :: (MonadIO m, IsGestureSingle o) => o -> m GestureSingle

noGestureSingle :: Maybe GestureSingle

Methods

getButton

gestureSingleGetButton

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> m Word32

Returns: The button number, or 0 for any button

Returns the button number gesture listens for, or 0 if gesture reacts to any button press.

Since: 3.14

getCurrentButton

gestureSingleGetCurrentButton

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> m Word32

Returns: The current button number

Returns the button number currently interacting with gesture, or 0 if there is none.

Since: 3.14

getCurrentSequence

gestureSingleGetCurrentSequence

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> m (Maybe EventSequence)

Returns: the current sequence

Returns the event sequence currently interacting with gesture. This is only meaningful if gestureIsActive returns True.

Since: 3.14

getExclusive

gestureSingleGetExclusive

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> m Bool

Returns: Whether the gesture is exclusive

Gets whether a gesture is exclusive. For more information, see gestureSingleSetExclusive.

Since: 3.14

getTouchOnly

gestureSingleGetTouchOnly

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> m Bool

Returns: True if the gesture only handles touch events

Returns True if the gesture is only triggered by touch events.

Since: 3.14

setButton

gestureSingleSetButton

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> Word32

button: button number to listen to, or 0 for any button

-> m ()

Sets the button number gesture listens to. If non-0, every button press from a different button number will be ignored. Touch events implicitly match with button 1.

Since: 3.14

setExclusive

gestureSingleSetExclusive

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> Bool

exclusive: True to make gesture exclusive

-> m ()

Sets whether gesture is exclusive. An exclusive gesture will only handle pointer and "pointer emulated" touch events, so at any given time, there is only one sequence able to interact with those.

Since: 3.14

setTouchOnly

gestureSingleSetTouchOnly

Arguments

:: (HasCallStack, MonadIO m, IsGestureSingle a)

=> a

gesture: a GestureSingle

-> Bool

touchOnly: whether gesture handles only touch events

-> m ()

If touchOnly is True, gesture will only handle events of type GDK_TOUCH_BEGIN, GDK_TOUCH_UPDATE or GDK_TOUCH_END. If False, mouse events will be handled too.

Since: 3.14

Properties

button

constructGestureSingleButton :: IsGestureSingle o => Word32 -> IO (GValueConstruct o)

getGestureSingleButton :: (MonadIO m, IsGestureSingle o) => o -> m Word32

setGestureSingleButton :: (MonadIO m, IsGestureSingle o) => o -> Word32 -> m ()

exclusive

constructGestureSingleExclusive :: IsGestureSingle o => Bool -> IO (GValueConstruct o)

getGestureSingleExclusive :: (MonadIO m, IsGestureSingle o) => o -> m Bool

setGestureSingleExclusive :: (MonadIO m, IsGestureSingle o) => o -> Bool -> m ()

touchOnly

constructGestureSingleTouchOnly :: IsGestureSingle o => Bool -> IO (GValueConstruct o)

getGestureSingleTouchOnly :: (MonadIO m, IsGestureSingle o) => o -> m Bool

setGestureSingleTouchOnly :: (MonadIO m, IsGestureSingle o) => o -> Bool -> m ()