CompositedTransformTargetModifier class
A widget that can be targeted by a CompositedTransformFollower.
When this widget is composited during the compositing phase (which comes after the paint phase, as described in WidgetsBinding.drawFrame), it updates the link object so that any CompositedTransformFollower widgets that are subsequently composited in the same frame and were given the same LayerLink can position themselves at the same screen location.
A single CompositedTransformTarget can be followed by multiple CompositedTransformFollower widgets.
The CompositedTransformTarget must come earlier in the paint order than any linked CompositedTransformFollowers.
See also:
- CompositedTransformFollower, the widget that can target this one.
- LeaderLayer, the layer that implements this widget's logic.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SingleChildStatelessModifier
- CompositedTransformTargetModifier
- Available extensions
Constructors
- CompositedTransformTargetModifier({Key? key, Widget? child, required LayerLink link})
-
Creates a composited transform target widget.
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- link → LayerLink
-
The link object that connects this CompositedTransformTarget with one or
more CompositedTransformFollowers.
final
- modifierKey → Key?
-
The actual key of the widget, which Modifier wrapped
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
inherited
-
buildWithChild(
BuildContext context, Widget? child) → Widget -
A build method that receives an extra
childparameter.override -
createElement(
) → SingleChildStatelessElement -
Create a SingleChildStatelessElement
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
modified(
) → Modifier -
Available on Widget, provided by the ModifierTransformer extension
Transform normal widget to Modifier -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent 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, int wrapWidth = 65}) → 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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited