JsonGestureDetectorBuilderModel class

Creates a widget that detects gestures.

Pan and scale callbacks cannot be used simultaneously because scale is a superset of pan. Use the scale callbacks instead.

Horizontal and vertical drag callbacks cannot be used simultaneously because a combination of a horizontal and vertical drag is a pan. Use the pan callbacks instead.

By default, gesture detectors contribute semantic information to the tree that is used by assistive technology.

Inheritance

Constructors

JsonGestureDetectorBuilderModel.new(Map<String, dynamic> args, {HitTestBehavior? behavior, DragStartBehavior dragStartBehavior = DragStartBehavior.start, bool excludeFromSemantics = false, void onDoubleTap()?, void onDoubleTapCancel()?, void onDoubleTapDown(TapDownDetails)?, void onForcePressEnd(ForcePressDetails)?, void onForcePressPeak(ForcePressDetails)?, void onForcePressStart(ForcePressDetails)?, void onForcePressUpdate(ForcePressDetails)?, void onHorizontalDragCancel()?, void onHorizontalDragDown(DragDownDetails)?, void onHorizontalDragEnd(DragEndDetails)?, void onHorizontalDragStart(DragStartDetails)?, void onHorizontalDragUpdate(DragUpdateDetails)?, void onLongPress()?, void onLongPressCancel()?, void onLongPressDown(LongPressDownDetails)?, void onLongPressEnd(LongPressEndDetails)?, void onLongPressMoveUpdate(LongPressMoveUpdateDetails)?, void onLongPressStart(LongPressStartDetails)?, void onLongPressUp()?, void onPanCancel()?, void onPanDown(DragDownDetails)?, void onPanEnd(DragEndDetails)?, void onPanStart(DragStartDetails)?, void onPanUpdate(DragUpdateDetails)?, void onScaleEnd(ScaleEndDetails)?, void onScaleStart(ScaleStartDetails)?, void onScaleUpdate(ScaleUpdateDetails)?, void onSecondaryLongPress()?, void onSecondaryLongPressCancel()?, void onSecondaryLongPressDown(LongPressDownDetails)?, void onSecondaryLongPressEnd(LongPressEndDetails)?, void onSecondaryLongPressMoveUpdate(LongPressMoveUpdateDetails)?, void onSecondaryLongPressStart(LongPressStartDetails)?, void onSecondaryLongPressUp()?, void onSecondaryTap()?, void onSecondaryTapCancel()?, void onSecondaryTapDown(TapDownDetails)?, void onSecondaryTapUp(TapUpDetails)?, void onTap()?, void onTapCancel()?, void onTapDown(TapDownDetails)?, void onTapUp(TapUpDetails)?, void onTertiaryLongPress()?, void onTertiaryLongPressCancel()?, void onTertiaryLongPressDown(LongPressDownDetails)?, void onTertiaryLongPressEnd(LongPressEndDetails)?, void onTertiaryLongPressMoveUpdate(LongPressMoveUpdateDetails)?, void onTertiaryLongPressStart(LongPressStartDetails)?, void onTertiaryLongPressUp()?, void onTertiaryTapCancel()?, void onTertiaryTapDown(TapDownDetails)?, void onTertiaryTapUp(TapUpDetails)?, void onVerticalDragCancel()?, void onVerticalDragDown(DragDownDetails)?, void onVerticalDragEnd(DragEndDetails)?, void onVerticalDragStart(DragStartDetails)?, void onVerticalDragUpdate(DragUpdateDetails)?, Set<PointerDeviceKind>? supportedDevices, bool trackpadScrollCausesScale = false, Offset trackpadScrollToScaleFactor = kDefaultTrackpadScrollToScaleFactor, JsonWidgetData? child})
const

Properties

args → Map<String, dynamic>
finalinherited
behavior → HitTestBehavior?
How this gesture detector should behave during hit testing when deciding how the hit test propagates to children and whether to consider targets behind this one.
final
child → JsonWidgetData?
The widget below this widget in the tree.
final
dragStartBehavior → DragStartBehavior
Determines the way that drag start behavior is handled.
final
excludeFromSemantics → bool
Whether to exclude these gestures from the semantics tree. For example, the long-press gesture for showing a tooltip is excluded because the tooltip itself is included in the semantics tree directly and so having a gesture to show it would result in duplication of information.
final
hashCode → int
The hash code for this object.
no setterinherited
onDoubleTap → void Function()?
The user has tapped the screen with a primary button at the same location twice in quick succession.
final
onDoubleTapCancel → void Function()?
The pointer that previously triggered onDoubleTapDown will not end up causing a double tap.
final
onDoubleTapDown → void Function(TapDownDetails)?
A pointer that might cause a double tap has contacted the screen at a particular location.
final
onForcePressEnd → void Function(ForcePressDetails)?
The pointer tracked by onForcePressStart is no longer in contact with the screen.
final
onForcePressPeak → void Function(ForcePressDetails)?
The pointer is in contact with the screen and has pressed with the maximum force. The amount of force is at least ForcePressGestureRecognizer.peakPressure.
final
onForcePressStart → void Function(ForcePressDetails)?
The pointer is in contact with the screen and has pressed with sufficient force to initiate a force press. The amount of force is at least ForcePressGestureRecognizer.startPressure.
final
onForcePressUpdate → void Function(ForcePressDetails)?
A pointer is in contact with the screen, has previously passed the ForcePressGestureRecognizer.startPressure and is either moving on the plane of the screen, pressing the screen with varying forces or both simultaneously.
final
onHorizontalDragCancel → void Function()?
The pointer that previously triggered onHorizontalDragDown did not complete.
final
onHorizontalDragDown → void Function(DragDownDetails)?
A pointer has contacted the screen with a primary button and might begin to move horizontally.
final
onHorizontalDragEnd → void Function(DragEndDetails)?
A pointer that was previously in contact with the screen with a primary button and moving horizontally is no longer in contact with the screen and was moving at a specific velocity when it stopped contacting the screen.
final
onHorizontalDragStart → void Function(DragStartDetails)?
A pointer has contacted the screen with a primary button and has begun to move horizontally.
final
onHorizontalDragUpdate → void Function(DragUpdateDetails)?
A pointer that is in contact with the screen with a primary button and moving horizontally has moved in the horizontal direction.
final
onLongPress → void Function()?
Called when a long press gesture with a primary button has been recognized.
final
onLongPressCancel → void Function()?
A pointer that previously triggered onLongPressDown will not end up causing a long-press.
final
onLongPressDown → void Function(LongPressDownDetails)?
The pointer has contacted the screen with a primary button, which might be the start of a long-press.
final
onLongPressEnd → void Function(LongPressEndDetails)?
A pointer that has triggered a long-press with a primary button has stopped contacting the screen.
final
onLongPressMoveUpdate → void Function(LongPressMoveUpdateDetails)?
A pointer has been drag-moved after a long-press with a primary button.
final
onLongPressStart → void Function(LongPressStartDetails)?
Called when a long press gesture with a primary button has been recognized.
final
onLongPressUp → void Function()?
A pointer that has triggered a long-press with a primary button has stopped contacting the screen.
final
onPanCancel → void Function()?
The pointer that previously triggered onPanDown did not complete.
final
onPanDown → void Function(DragDownDetails)?
A pointer has contacted the screen with a primary button and might begin to move.
final
onPanEnd → void Function(DragEndDetails)?
A pointer that was previously in contact with the screen with a primary button and moving is no longer in contact with the screen and was moving at a specific velocity when it stopped contacting the screen.
final
onPanStart → void Function(DragStartDetails)?
A pointer has contacted the screen with a primary button and has begun to move.
final
onPanUpdate → void Function(DragUpdateDetails)?
A pointer that is in contact with the screen with a primary button and moving has moved again.
final
onScaleEnd → void Function(ScaleEndDetails)?
The pointers are no longer in contact with the screen.
final
onScaleStart → void Function(ScaleStartDetails)?
The pointers in contact with the screen have established a focal point and initial scale of 1.0.
final
onScaleUpdate → void Function(ScaleUpdateDetails)?
The pointers in contact with the screen have indicated a new focal point and/or scale.
final
onSecondaryLongPress → void Function()?
Called when a long press gesture with a secondary button has been recognized.
final
onSecondaryLongPressCancel → void Function()?
A pointer that previously triggered onSecondaryLongPressDown will not end up causing a long-press.
final
onSecondaryLongPressDown → void Function(LongPressDownDetails)?
The pointer has contacted the screen with a secondary button, which might be the start of a long-press.
final
onSecondaryLongPressEnd → void Function(LongPressEndDetails)?
A pointer that has triggered a long-press with a secondary button has stopped contacting the screen.
final
onSecondaryLongPressMoveUpdate → void Function(LongPressMoveUpdateDetails)?
A pointer has been drag-moved after a long press with a secondary button.
final
onSecondaryLongPressStart → void Function(LongPressStartDetails)?
Called when a long press gesture with a secondary button has been recognized.
final
onSecondaryLongPressUp → void Function()?
A pointer that has triggered a long-press with a secondary button has stopped contacting the screen.
final
onSecondaryTap → void Function()?
A tap with a secondary button has occurred.
final
onSecondaryTapCancel → void Function()?
The pointer that previously triggered onSecondaryTapDown will not end up causing a tap.
final
onSecondaryTapDown → void Function(TapDownDetails)?
A pointer that might cause a tap with a secondary button has contacted the screen at a particular location.
final
onSecondaryTapUp → void Function(TapUpDetails)?
A pointer that will trigger a tap with a secondary button has stopped contacting the screen at a particular location.
final
onTap → void Function()?
A tap with a primary button has occurred.
final
onTapCancel → void Function()?
The pointer that previously triggered onTapDown will not end up causing a tap.
final
onTapDown → void Function(TapDownDetails)?
A pointer that might cause a tap with a primary button has contacted the screen at a particular location.
final
onTapUp → void Function(TapUpDetails)?
A pointer that will trigger a tap with a primary button has stopped contacting the screen at a particular location.
final
onTertiaryLongPress → void Function()?
Called when a long press gesture with a tertiary button has been recognized.
final
onTertiaryLongPressCancel → void Function()?
A pointer that previously triggered onTertiaryLongPressDown will not end up causing a long-press.
final
onTertiaryLongPressDown → void Function(LongPressDownDetails)?
The pointer has contacted the screen with a tertiary button, which might be the start of a long-press.
final
onTertiaryLongPressEnd → void Function(LongPressEndDetails)?
A pointer that has triggered a long-press with a tertiary button has stopped contacting the screen.
final
onTertiaryLongPressMoveUpdate → void Function(LongPressMoveUpdateDetails)?
A pointer has been drag-moved after a long press with a tertiary button.
final
onTertiaryLongPressStart → void Function(LongPressStartDetails)?
Called when a long press gesture with a tertiary button has been recognized.
final
onTertiaryLongPressUp → void Function()?
A pointer that has triggered a long-press with a tertiary button has stopped contacting the screen.
final
onTertiaryTapCancel → void Function()?
The pointer that previously triggered onTertiaryTapDown will not end up causing a tap.
final
onTertiaryTapDown → void Function(TapDownDetails)?
A pointer that might cause a tap with a tertiary button has contacted the screen at a particular location.
final
onTertiaryTapUp → void Function(TapUpDetails)?
A pointer that will trigger a tap with a tertiary button has stopped contacting the screen at a particular location.
final
onVerticalDragCancel → void Function()?
The pointer that previously triggered onVerticalDragDown did not complete.
final
onVerticalDragDown → void Function(DragDownDetails)?
A pointer has contacted the screen with a primary button and might begin to move vertically.
final
onVerticalDragEnd → void Function(DragEndDetails)?
A pointer that was previously in contact with the screen with a primary button and moving vertically is no longer in contact with the screen and was moving at a specific velocity when it stopped contacting the screen.
final
onVerticalDragStart → void Function(DragStartDetails)?
A pointer has contacted the screen with a primary button and has begun to move vertically.
final
onVerticalDragUpdate → void Function(DragUpdateDetails)?
A pointer that is in contact with the screen with a primary button and moving vertically has moved in the vertical direction.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
supportedDevices → Set<PointerDeviceKind>?
The kind of devices that are allowed to be recognized.
final
trackpadScrollCausesScale → bool
Whether scrolling up/down on a trackpad should cause scaling instead of panning.
final
trackpadScrollToScaleFactor → Offset
A factor to control the direction and magnitude of scale when converting trackpad scrolling.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() → Map<String, dynamic>
Abstract function that concrete classes must implement. This must encode the internal data model to a JSON compatible representation.
override
toString() → String
Returns the string encoded JSON representation for this class. This will remove all null values and empty collections from the returned string.
inherited

Operators

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

Static Methods

fromDynamic(dynamic map, {Map<String, dynamic> args = const {}, JsonWidgetRegistry? registry}) → JsonGestureDetectorBuilderModel
maybeFromDynamic(dynamic map, {Map<String, dynamic> args = const {}, JsonWidgetRegistry? registry}) → JsonGestureDetectorBuilderModel?