CustomLayoutDelegate class

自定义高度的容器

Inheritance

• Object
• SingleChildLayoutDelegate
• CustomLayoutDelegate

Constructors

CustomLayoutDelegate({double? progress, double? height})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

height → double?

高度

final

progress → double?

动画的完成度，用来获取位置

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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 CustomLayoutDelegate 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