GridLayoutDelegate class

A MultiChildLayoutDelegate that positions grid cells at pre-computed offsets. Each child is identified by a CellLayoutId and sized/placed according to the corresponding entry in cellRects.

Inheritance

• Object
• MultiChildLayoutDelegate
• GridLayoutDelegate

Constructors

GridLayoutDelegate({required Map<CellLayoutId, Rect> cellRects})

Properties

cellRects → Map<CellLayoutId, Rect>

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

getSize(BoxConstraints constraints) → Size

Override this method to return the size of this object given the incoming constraints.

inherited

hasChild(Object childId) → bool

True if a non-null LayoutChild was provided for the specified id.

inherited

layoutChild(Object childId, BoxConstraints constraints) → Size

Ask the child to update its layout within the limits specified by the constraints parameter. The child's size is returned.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

performLayout(Size size) → void

Override this method to lay out and position all children given this widget's size.

override

positionChild(Object childId, Offset offset) → void

Specify the child's origin relative to this origin.

inherited

shouldRelayout(covariant GridLayoutDelegate oldDelegate) → bool

Override this method to return true when the children need to be laid out.

override

toString() → String

Override this method to include additional information in the debugging data printed by debugDumpRenderTree and friends.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited