GridLayoutDelegate class

A delegate class for a grid layout with two layout modes: auto fill mode and sized mode.

Inheritance

• Object
• MultiChildLayoutDelegate
• GridLayoutDelegate

Constructors

GridLayoutDelegate.autoFill({required List<LayoutId> autoFillItems, required int columnCount, EdgeInsetsGeometry layoutPadding = const EdgeInsets.all(2.0), Size itemPadding = const Size(2.0, 2.0), GridLayoutAlignment lastRowAlignment = GridLayoutAlignment.start})

Auto fill mode:

GridLayoutDelegate.sized({required List<GridLayoutSizedItem> sizedItems, required int columnCount, EdgeInsetsGeometry layoutPadding = const EdgeInsets.all(2.0), Size itemPadding = const Size(2.0, 2.0), GridLayoutAlignment lastRowAlignment = GridLayoutAlignment.start})

Sized mode:

Properties

autoFillItems ↔ List<LayoutId>

List of auto fill items (should be initialized in time)

getter/setter pair

columnCount ↔ int

The number of columns in the grid layout.

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

itemPadding → Size

The padding around each item in the layout.

final

itemsPosition ↔ List<Offset>

Positions of items

getter/setter pair

lastRowAlignment → GridLayoutAlignment

The alignment of the last row in the layout.

final

layoutPadding → EdgeInsetsGeometry

The padding around the entire layout.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sizedItems ↔ List<GridLayoutSizedItem>

List of sized items

getter/setter pair

Methods

convertSizedItemByAutoFill(BoxConstraints constraints) → void

getSize(BoxConstraints constraints) → Size

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

override

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 MultiChildLayoutDelegate 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