AnchoredOverlay class

Displays an overlay Widget anchored directly above the center of this AnchoredOverlay.

The overlay Widget is created by invoking the provided overlayBuilder.

The anchor position is provided to the overlayBuilder, but the builder does not have to respect it. In other words, the overlayBuilder can interpret the meaning of "anchor" however it wants - the overlay will not be forced to be centered about the anchor.

The overlay built by this AnchoredOverlay can be conditionally shown and hidden by settings the showOverlay property to true or false.

The overlayBuilder is invoked every time this Widget is rebuilt.

Inheritance

Constructors

AnchoredOverlay({dynamic key, bool showOverlay: false, Widget overlayBuilder(BuildContext, Rect anchorBounds, Offset anchor), Widget child })

Properties

child Widget
final
overlayBuilder Widget Function(BuildContext, Rect anchorBounds, Offset anchor)
final
showOverlay → bool
final
hashCode → int
The hash code for this object.
read-only, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
override
createElement() StatelessElement
Creates a StatelessElement to manage this widget's location in the tree. [...]
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
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.debug }) → String
Returns 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 ==(dynamic other) → bool
The equality operator.
inherited