CustomSingleChildLayoutDelegate class
A customizable SingleChildLayoutDelegate which is used by CustomSingleChildLayout or RenderCustomSingleChildLayoutBox. Here this delegate will use given function parameters as override methods.
- Inheritance
-
- Object
- SingleChildLayoutDelegate
- CustomSingleChildLayoutDelegate
Constructors
- CustomSingleChildLayoutDelegate({Size sizeGetter(BoxConstraints constraints)?, BoxConstraints constraintsGetter(BoxConstraints constraints)?, Offset positionGetter(Size size, Size childSize)?, bool relayoutChecker()?})
-
const
Properties
- constraintsGetter → (BoxConstraints Function(BoxConstraints constraints)?)
-
The constraints for the child given the incoming constraints.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- positionGetter → (Offset Function(Size size, Size childSize)?)
-
The position where the child should be placed.
final
- relayoutChecker → (bool Function()?)
-
The checker function to determine whether new instance is different from the old one.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sizeGetter → (Size Function(BoxConstraints constraints)?)
-
The size of this object given the incoming constraints.
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.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
shouldRelayout(
covariant CustomSingleChildLayoutDelegate 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