RenderLayoutBuilder class

The render object for LayoutBuilder, which invokes a builder callback with the parent's BoxConstraints during layout.

Inheritance

Mixed-in types

Constructors

RenderLayoutBuilder({required LayoutWidgetBuilder builder, required BuildContext buildContext}): Creates a RenderLayoutBuilder with the given builder and buildContext.

buildContext ↔ BuildContext: The build context passed to the builder.
getter/setter pair
builder ↔ LayoutWidgetBuilder: The builder callback invoked during layout.
getter/setter pair
child ↔ RenderBox?: The single child of this render object, or null if none.
getter/setter pairinherited
hasChild → bool: Whether this render object currently has a child.
no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
hasSize → bool: Whether this render object has been laid out and has a size.
no setterinherited
height → int: The height of this render box in terminal rows.
no setterinherited
isRelayoutBoundary → bool: Whether this render object acts as a relayout boundary.
no setterinherited
needsPaint → bool: Whether this render object needs to be repainted.
no setterinherited
parent ↔ RenderObject?: The parent of this render object, or null if this is the root.
getter/setter pairinherited
parentData ↔ ParentData?: Optional data associated with this render object by its parent.
getter/setter pairinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
size ↔ Size?: The current size of this render object after layout.
getter/setter pairinherited
width → int: The width of this render box in terminal columns.
no setterinherited

clearNeedsPaint() → void: Clears the needs-paint flag, indicating painting is up to date.
inherited
layout(Constraints constraints, {bool parentUsesSize = true}) → void: Performs layout on this render object using the given constraints.
inherited
markNeedsLayout() → void: Marks this render object as needing layout and paint.
inherited
markNeedsPaint() → void: Marks this render object as needing to be repainted.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
paint(PaintingContext context, Offset offset) → void: Paints this render object into the given context at offset.
override
performLayout(Constraints constraints) → void: Called to perform the actual layout computation for this render object.
override
setRelayoutBoundary(bool value) → void: Marks this render object as a relayout boundary or not.
inherited
setupParentData(RenderObject child) → void: Initializes parentData for the given child if not already set.
inherited
toString() → String: A string representation of this object.
inherited