RotatedWidget class

A widget that rotates its child by a specified angle while filling the available space.

The RotatedWidget automatically calculates the optimal child size based on the rotation angle, then applies rotation and scaling transformations to ensure the rotated child completely fills the viewport without gaps or overflow.

At 0° or 180°, the child matches the viewport dimensions. At 90° or 270°, the child's width and height are swapped. At intermediate angles (e.g., 45°), the child is sized smaller and then scaled up after rotation to fill the viewport.

The rotation is performed around the center of the child widget.

Example:

// Wrap a widget in a fixed-size container and rotate it
SizedBox(
  width: 400,
  height: 200,
  child: RotatedWidget(
    angle: pi / 4, // 45 degrees
    filterQuality: FilterQuality.medium,
    child: Container(
      color: Colors.blue,
      child: Center(child: Text('Rotated')),
    ),
  ),
)

See also:

Inheritance

Constructors

RotatedWidget({Key? key, required double angle, FilterQuality? filterQuality, required Widget? child})
Creates a widget that rotates its child.
const

Properties

angle → double
The angle of rotation in radians.
final
child → Widget?
The widget below this widget in the tree.
finalinherited
filterQuality → FilterQuality?
The quality of the image filtering applied during rotation.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → SingleChildRenderObjectElement
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
createRenderObject(BuildContext context) → RenderObject
Creates an instance of the RenderObject class that this RenderObjectWidget represents, using the configuration described by this RenderObjectWidget.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
didUnmountRenderObject(covariant RenderObject renderObject) → void
This method is called when a RenderObject that was previously associated with this widget is removed from the render tree. The provided RenderObject will be of the same type as the one created by this widget's createRenderObject method.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited
updateRenderObject(BuildContext context, covariant RenderRotatedWidget renderObject) → void
Copies the configuration described by this RenderObjectWidget to the given RenderObject, which will be of the same type as returned by this object's createRenderObject.
override

Operators

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