SingleChildRenderBox class abstract

A render box that manages a single child with customizable layout and painting behavior.

Inheritance
Mixed-in types
Implementers

Constructors

SingleChildRenderBox()

Properties

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

Methods

clearNeedsPaint() → void
Clears the needs-paint flag, indicating painting is up to date.
inherited
computeChildOffset(Offset parentOffset, Size childSize) → Offset
Computes the offset at which to paint the child.
computeSizeFromChild(BoxConstraints constraints, Size childSize) → Size
Computes this render box's size based on the child's childSize.
computeSizeWithoutChild(BoxConstraints constraints) → Size
Computes this render box's size when it has no child.
getConstraintsForChild(BoxConstraints constraints) → BoxConstraints
Returns the constraints to apply to the child during layout.
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

Operators

operator ==(Object other) → bool
The equality operator.
inherited