NapaGestureHandler class

Lua-backed gesture event handler for NapaGestureDetector.

The script runs in a single LuaState shared across all events. Define any of the following Lua functions to handle gesture events. Unrecognized functions are ignored and their recognizer is not activated.

No-parameter callbacks: onTap, onTapCancel, onDoubleTap, onDoubleTapCancel, onLongPress, onLongPressUp, onLongPressCancel, onSecondaryTap, onSecondaryTapCancel, onSecondaryLongPress, onSecondaryLongPressUp, onSecondaryLongPressCancel, onTertiaryTapCancel, onTertiaryLongPress, onTertiaryLongPressUp, onTertiaryLongPressCancel, onVerticalDragCancel, onHorizontalDragCancel, onPanCancel

Callbacks with a details table d:

Position events — d.localX, d.localY, d.globalX, d.globalY: onTapDown, onTapUp, onSecondaryTapDown, onSecondaryTapUp, onTertiaryTapDown, onTertiaryTapUp, onDoubleTapDown, onLongPressDown, onLongPressStart, onSecondaryLongPressDown, onSecondaryLongPressStart, onTertiaryLongPressDown, onTertiaryLongPressStart, onVerticalDragDown, onVerticalDragStart, onHorizontalDragDown, onHorizontalDragStart, onPanDown, onPanStart

Move events — above + d.offsetDx, d.offsetDy: onLongPressMoveUpdate, onSecondaryLongPressMoveUpdate, onTertiaryLongPressMoveUpdate

Drag update — above + d.dx, d.dy, d.primaryDelta: onVerticalDragUpdate, onHorizontalDragUpdate, onPanUpdate

End/velocity events — d.velocityDx, d.velocityDy + position: onLongPressEnd, onSecondaryLongPressEnd, onTertiaryLongPressEnd

Drag end — d.velocityDx, d.velocityDy, d.primaryVelocity: onVerticalDragEnd, onHorizontalDragEnd, onPanEnd

Scale start — d.focalX, d.focalY, d.localFocalX, d.localFocalY, d.pointerCount: onScaleStart

Scale update — above + d.scale, d.horizontalScale, d.verticalScale, d.rotation, d.dx, d.dy: onScaleUpdate

Scale end — d.velocityDx, d.velocityDy, d.pointerCount: onScaleEnd

Force press — d.localX, d.localY, d.globalX, d.globalY, d.pressure: onForcePressStart, onForcePressPeak, onForcePressUpdate, onForcePressEnd

Constructors

NapaGestureHandler({NapaScriptType scriptType = .lua, String script = ''})

Properties

hashCode → int: The hash code for this object.
no setterinherited
luaState ↔ LuaState: getter/setter pair
onDoubleTap → GestureTapCallback?: no setter
onDoubleTapCancel → GestureTapCancelCallback?: no setter
onDoubleTapDown → GestureTapDownCallback?: no setter
onForcePressEnd → GestureForcePressEndCallback?: no setter
onForcePressPeak → GestureForcePressPeakCallback?: no setter
onForcePressStart → GestureForcePressStartCallback?: no setter
onForcePressUpdate → GestureForcePressUpdateCallback?: no setter
onHorizontalDragCancel → GestureDragCancelCallback?: no setter
onHorizontalDragDown → GestureDragDownCallback?: no setter
onHorizontalDragEnd → GestureDragEndCallback?: no setter
onHorizontalDragStart → GestureDragStartCallback?: no setter
onHorizontalDragUpdate → GestureDragUpdateCallback?: no setter
onLongPress → GestureLongPressCallback?: no setter
onLongPressCancel → GestureLongPressCancelCallback?: no setter
onLongPressDown → GestureLongPressDownCallback?: no setter
onLongPressEnd → GestureLongPressEndCallback?: no setter
onLongPressMoveUpdate → GestureLongPressMoveUpdateCallback?: no setter
onLongPressStart → GestureLongPressStartCallback?: no setter
onLongPressUp → GestureLongPressUpCallback?: no setter
onPanCancel → GestureDragCancelCallback?: no setter
onPanDown → GestureDragDownCallback?: no setter
onPanEnd → GestureDragEndCallback?: no setter
onPanStart → GestureDragStartCallback?: no setter
onPanUpdate → GestureDragUpdateCallback?: no setter
onScaleEnd → GestureScaleEndCallback?: no setter
onScaleStart → GestureScaleStartCallback?: no setter
onScaleUpdate → GestureScaleUpdateCallback?: no setter
onSecondaryLongPress → GestureLongPressCallback?: no setter
onSecondaryLongPressCancel → GestureLongPressCancelCallback?: no setter
onSecondaryLongPressDown → GestureLongPressDownCallback?: no setter
onSecondaryLongPressEnd → GestureLongPressEndCallback?: no setter
onSecondaryLongPressMoveUpdate → GestureLongPressMoveUpdateCallback?: no setter
onSecondaryLongPressStart → GestureLongPressStartCallback?: no setter
onSecondaryLongPressUp → GestureLongPressUpCallback?: no setter
onSecondaryTap → GestureTapCallback?: no setter
onSecondaryTapCancel → GestureTapCancelCallback?: no setter
onSecondaryTapDown → GestureTapDownCallback?: no setter
onSecondaryTapUp → GestureTapUpCallback?: no setter
onTap → GestureTapCallback?: no setter
onTapCancel → GestureTapCancelCallback?: no setter
onTapDown → GestureTapDownCallback?: no setter
onTapUp → GestureTapUpCallback?: no setter
onTertiaryLongPress → GestureLongPressCallback?: no setter
onTertiaryLongPressCancel → GestureLongPressCancelCallback?: no setter
onTertiaryLongPressDown → GestureLongPressDownCallback?: no setter
onTertiaryLongPressEnd → GestureLongPressEndCallback?: no setter
onTertiaryLongPressMoveUpdate → GestureLongPressMoveUpdateCallback?: no setter
onTertiaryLongPressStart → GestureLongPressStartCallback?: no setter
onTertiaryLongPressUp → GestureLongPressUpCallback?: no setter
onTertiaryTapCancel → GestureTapCancelCallback?: no setter
onTertiaryTapDown → GestureTapDownCallback?: no setter
onTertiaryTapUp → GestureTapUpCallback?: no setter
onVerticalDragCancel → GestureDragCancelCallback?: no setter
onVerticalDragDown → GestureDragDownCallback?: no setter
onVerticalDragEnd → GestureDragEndCallback?: no setter
onVerticalDragStart → GestureDragStartCallback?: no setter
onVerticalDragUpdate → GestureDragUpdateCallback?: no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
script ↔ String: getter/setter pair
scriptType ↔ NapaScriptType: getter/setter pair

Methods

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toJson() → dynamic
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Methods

decode(dynamic data) → NapaGestureHandler?