com.horstmann.violet.framework
Class ShapeEdge

java.lang.Object
  com.horstmann.violet.framework.ShapeEdge

All Implemented Interfaces:

Edge, java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

NoteEdge, ObjectReferenceEdge, SegmentedLineEdge, StateTransitionEdge

public abstract class ShapeEdge
extends java.lang.Object

A class that assumes that an edge can yield its shape and then takes advantage of the fact that containment testing can be done by stroking the shape with a fat stroke. NOTE: Ideally, you should be able to draw the same shape that is used for containment testing. However, in JDK 1.4, BasicStroke.createStrokedShape returns shitty-looking shapes.

See Also:

Serialized Form

Constructor Summary

ShapeEdge()

Method Summary

java.lang.Object	clone()
void	connect(Node s, Node e) Connect this edge to two nodes.
boolean	contains(java.awt.geom.Point2D aPoint) Tests whether the edge contains a point.
java.awt.geom.Rectangle2D	getBounds(java.awt.Graphics2D g2) Gets the smallest rectangle that bounds this edge.
java.awt.geom.Line2D	getConnectionPoints() Gets the points at which this edge is connected to its nodes.
Node	getEnd() Gets the ending node.
abstract java.awt.Shape	getShape() Returns the path that should be stroked to draw this edge.
Node	getStart() Gets the starting node.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.horstmann.violet.framework.Edge

draw

Constructor Detail

ShapeEdge

public ShapeEdge()

Method Detail

getShape

public abstract java.awt.Shape getShape()

Returns the path that should be stroked to draw this edge. The path does not include arrow tips or labels.

Returns:

a path along the edge

getBounds

public java.awt.geom.Rectangle2D getBounds(java.awt.Graphics2D g2)

Description copied from interface: Edge

Gets the smallest rectangle that bounds this edge. The bounding rectangle contains all labels.

Specified by:

getBounds in interface Edge

Returns:

the bounding rectangle

contains

public boolean contains(java.awt.geom.Point2D aPoint)

Description copied from interface: Edge

Tests whether the edge contains a point.

Parameters:

aPoint - the point to test

Returns:

true if this edge contains aPoint

clone

public java.lang.Object clone()

Specified by:

clone in interface Edge

Overrides:

clone in class java.lang.Object

connect

public void connect(Node s,
                    Node e)

Description copied from interface: Edge

Connect this edge to two nodes.

Specified by:

connect in interface Edge

Parameters:

s - the starting node

e - the ending node

getStart

public Node getStart()

Description copied from interface: Edge

Gets the starting node.

Specified by:

getStart in interface Edge

Returns:

the starting node

getEnd

public Node getEnd()

Description copied from interface: Edge

Gets the ending node.

Specified by:

getEnd in interface Edge

Returns:

the ending node

getConnectionPoints

public java.awt.geom.Line2D getConnectionPoints()

Description copied from interface: Edge

Gets the points at which this edge is connected to its nodes.

Specified by:

getConnectionPoints in interface Edge

Returns:

a line joining the two connection points