RenderObject class abstract

The base class for all render objects in the rendering tree.

Render objects perform layout and painting to produce visual output.

Implementers

Constructors

hashCode → int: The hash code for this object.
no setterinherited
isRelayoutBoundary → bool: Whether this render object acts as a relayout boundary.
no setter
needsPaint → bool: Whether this render object needs to be repainted.
no setter
parent ↔ RenderObject?: The parent of this render object, or null if this is the root.
getter/setter pair
parentData ↔ ParentData?: Optional data associated with this render object by its parent.
getter/setter pair
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 pair

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