Interface CanvasComponent

All Known Subinterfaces:
Connector, EventAcceptor, Figure, FigureContainer, GrabHandle, ShapedFigure, Terminal, VisibleComponent
All Known Implementing Classes:
AbstractConnector, AbstractFigure, AbstractFigureContainer, ArcConnector, ArcManipulator, AttributeBoundsManipulator, BasicCanvasPane, BasicEdgeHighlighter, BasicEllipse, BasicFigure, BasicGrabHandle, BasicGraphPane, BasicHighlighter, BasicRectangle, BoundsManipulator, BubblePane, CanvasLayer, CanvasPane, CircleManipulator, CompositeFigure, ConnectorManipulator, ConnectorTutorial.SitedRectangle, EventLayer, FigureDecorator, FigureLayer, FigureTutorial.CustomRectangle, FigureWrapper, GraphicsPane, GraphPane, GridLayer, IconFigure, ImageFigure, LabelFigure, LabelWrapper, LinkManhattanConnector, ManhattanConnector, Manipulator, MoveHandle, OverlayLayer, PaintedFigure, PaneWrapper, PathFigure, PathManipulator, PortTerminal, RoundedRectangle, SimplePane, StateBubble, StraightConnector, StraightTerminal, SwingWrapper, TerminalFigure, TransformedFigureTutorial.CloudFigure, TypedDecorator, VectorFigure

public interface CanvasComponent

A CanvasComponent is an object that can be inserted into the display tree of a JCanvas. The tree is rooted by an instance of CanvasPane, then consists of CanvasLayers, Figures, and other kinds of recursively-structured CanvasComponents.

$Id: CanvasComponent.java 38798 2005-07-08 20:00:01Z cxh $
John Reekie
Accepted Rating:

Method Summary
 CanvasComponent getParent()
          Return the parent of this component.
 TransformContext getTransformContext()
          Return the transform context of the component.
 void repaint()
          Schedule a repaint of the component.
 void repaint(DamageRegion d)
          Accept notification that a repaint has occurred somewhere in the tree below this component.

Method Detail


CanvasComponent getParent()
Return the parent of this component. Return null if the component does not have a parent.


TransformContext getTransformContext()
Return the transform context of the component. If the component has its own transform context, this method should return it, otherwise it should return the transform context of its parent.


void repaint()
Schedule a repaint of the component. This should be called after performing modifications on the component.


void repaint(DamageRegion d)
Accept notification that a repaint has occurred somewhere in the tree below this component. The component must clear any cached data that depends on its children and forward the notification upwards.