RenderBox class abstract

A render object that uses the box layout model.

RenderBox provides the foundation for rectangular layouts in terminal space. It defines how constraints flow down and sizes flow up the tree.

Inheritance
Implementers

Constructors

RenderBox()

Properties

children → List<RenderObject>
Child RenderObjects
finalinherited
debugNeedsLayout → bool
Whether this render object is waiting for layout.
no setterinherited
debugNeedsPaint → bool
Whether this render object is waiting for paint.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
height ↔ int
Height in terminal cells, assigned during layout.
getter/setter pairinherited
parent ↔ RenderObject?
Parent RenderObject in the tree
getter/setter pairinherited
pipelineOwner → PipelineOwner?
The pipeline owner this render object is attached to, if any.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
size ↔ Size
The current size of this box, or Size.zero if not laid out
getter/setter pair
width ↔ int
Width in terminal cells, assigned during layout.
getter/setter pairinherited
x ↔ int
Horizontal position in terminal cells, relative to the parent.
getter/setter pairinherited
y ↔ int
Vertical position in terminal cells, relative to the parent.
getter/setter pairinherited

Methods

adoptChild(RenderObject child) → void
Add a child to this render object
inherited
attach(PipelineOwner owner) → void
Attach this render object and its existing children to owner.
inherited
detach() → void
Called when the render object is detached from the render tree.
inherited
dropChild(RenderObject child) → void
Remove a child from this render object
inherited
getConstraintsForChild(RenderBox child, BoxConstraints constraints) → BoxConstraints
Get the constraints that should be applied to children
hitTest(HitTestResult result, Offset position) → bool
Hit-test this render object using position in local coordinates.
override
hitTestChildren(HitTestResult result, Offset position) → bool
Hit-test children in reverse paint order.
hitTestSelf(Offset position) → bool
Whether this box should add itself to a hit-test path.
layout(Constraints constraints) → void
Entry point for layout.
inherited
markNeedsLayout() → void
Mark this render object as needing layout and paint.
inherited
markNeedsPaint() → void
Mark this render object as needing paint.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
paint(PaintingContext context, Offset offset) → void
Default paint implementation.
override
performBoxLayout(BoxConstraints constraints) → void
Perform layout with typed box constraints
performLayout(Constraints constraints) → void
Perform layout with box constraints
override
positionChild(RenderBox child, int x, int y) → void
Position a child within this box
toString() → String
A string representation of this object.
inherited
visitChildren(void visitor(RenderObject child)) → void
Visit all children with a callback
inherited

Operators

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