CustomPositionedWidget class

A custom widget with controllable offset and padding. The provided controller can be used to control these properties.

Considering this widget as the "container", then by default, the child parameter will be bounded inside this "container" (provided it is smaller than it), and the "container" will fill its parent, if it can, otherwise maxSize will be used, and if maxSize is not provided, then the size returned by MediaQuery.of(context).size will be used. For example:

       Stack(
        children: [
          Positioned( // parent
            child: CustomPositionedWidget( // container
              child: SizedBox( // child
                width: 100,
                height: 100,
              ),
              // other params...
            ),
          ),
        ],
      );

In the above snippet, since parent has no constraints and maxSize is not provided then size returned by MediaQuery.of(context).size will be used for container.

This widget will take care of disposing the provided CustomPositionedWidgetController.

Inheritance

Constructors

CustomPositionedWidget({Key? key, required Widget child, required CustomPositionedWidgetController controller, Size? maxSize})
Creates a CustomPositionedWidget. See the class documentation for details.
const

Properties

child → Widget
The child of this widget, controllable by the controller.
final
controller → CustomPositionedWidgetController
The controller of this widget.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
maxSize → Size?
The max size of this widget. This is not the size of the child, this is rather the size of the "container" that will contain the child.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<CustomPositionedWidget>
Creates the mutable state for this widget at a given location in the tree.
override
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
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}) → 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