ShadPositionDelegate class

A delegate for computing the layout of an overlay to be displayed above or below a target specified in the global coordinate system.

Inheritance

Constructors

ShadPositionDelegate({required Offset target, required double verticalOffset, required bool preferBelow})
Creates a delegate for computing the layout of an overlay.

Properties

hashCode → int
The hash code for this object.
no setterinherited
preferBelow → bool
Whether the overlay is displayed below its widget by default.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
target → Offset
The offset of the target the overlay is positioned near in the global coordinate system.
final
verticalOffset → double
The amount of vertical distance between the target and the displayed overlay.
final

Methods

getConstraintsForChild(BoxConstraints constraints) → BoxConstraints
The constraints for the child given the incoming constraints.
override
getPositionForChild(Size size, Size childSize) → Offset
The position where the child should be placed.
override
getSize(BoxConstraints constraints) → Size
The size of this object given the incoming constraints.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
shouldRelayout(covariant ShadPositionDelegate oldDelegate) → bool
Called whenever a new instance of the custom layout delegate class is provided to the RenderCustomSingleChildLayoutBox object, or any time that a new CustomSingleChildLayout object is created with a new instance of the custom layout delegate class (which amounts to the same thing, because the latter is implemented in terms of the former).
override
toString() → String
A string representation of this object.
inherited

Operators

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