TapRegion class Null safety
A widget that defines a region that can detect taps inside or outside of itself and any group of regions it belongs to, without participating in the gesture disambiguation system.
This widget indicates to the nearest ancestor TapRegionSurface that the region occupied by its child will participate in the tap detection for that surface.
If this region belongs to a group (by virtue of its groupId), all the regions in the group will act as one.
If there is no TapRegionSurface ancestor, TapRegion will do nothing.
- Inheritance
- Implementers
Constructors
- TapRegion({Key? key, required Widget? child, bool enabled = true, TapRegionCallback? onTapOutside, TapRegionCallback? onTapInside, Object? groupId, String? debugLabel})
-
Creates a const TapRegion.
const
Properties
- child → Widget?
-
The widget below this widget in the tree.
finalinherited
- debugLabel → String?
-
An optional debug label to help with debugging in debug mode.
final
- enabled → bool
-
Whether or not this TapRegion is enabled as part of the composite region.
final
- groupId → Object?
-
An optional group ID that groups TapRegions together so that they
operate as one region. If any member of a group is hit by a particular
tap, then the onTapOutside will not be called for any members of the
group. If any member of the group is hit, then all members will have their
onTapInside called.
final
- hashCode → int
- The hash code for this object.
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- onTapInside → TapRegionCallback?
-
A callback to be invoked when a tap is detected inside of this
TapRegion, or any other tap region with the same groupId, if any.
final
- onTapOutside → TapRegionCallback?
-
A callback to be invoked when a tap is detected outside of this
TapRegion and any other region with the same groupId, if any.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
createElement(
) → SingleChildRenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
createRenderObject(
BuildContext context) → RenderObject -
Creates an instance of the RenderObject class that this
RenderObjectWidget represents, using the configuration described by this
RenderObjectWidget.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNode
objects describing this node's children.protected">@protectedinherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
override
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
A render object previously associated with this widget has been removed
from the tree. The given RenderObject will be of the same type as
returned by this object's createRenderObject.
protected">@protectedinherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
-
updateRenderObject(
BuildContext context, covariant RenderTapRegion renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the
given RenderObject, which will be of the same type as returned by this
object's createRenderObject.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
nonVirtual">@nonVirtualinherited