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

• Object
• RenderObject
• RenderBox

Implementers

• RenderAsciiFont
• RenderConstrainedBox
• RenderDecoratedBox
• RenderFlex
• RenderImage
• RenderPadding
• RenderParagraph
• RenderPositionedBox
• RenderProxyBox
• RenderStack
• RenderTextArea
• RenderTextTable
• RenderWrap

Constructors

RenderBox()

Properties

children → List<RenderObject>

Live read-only view of direct children in traversal order.

late, final, inherited

debugNeedsLayout → bool

Whether this render object is waiting for layout.

no setter, inherited

debugNeedsPaint → bool

Whether this render object is waiting for paint.

no setter, inherited

hashCode → int

The hash code for this object.

no setter, inherited

height ↔ int

Height in terminal cells, assigned during layout.

getter/setter pair, inherited

parent → RenderObject?

Parent RenderObject in the tree.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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 pair, inherited

x ↔ int

Horizontal position in terminal cells, relative to the parent.

getter/setter pair, inherited

y ↔ int

Vertical position in terminal cells, relative to the parent.

getter/setter pair, inherited

Methods

adoptChild(RenderObject child) → void

Add a child to this render object

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

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