Package ptolemy.vergil.kernel

Class RelativeLinkFigure

java.lang.Object

diva.canvas.AbstractFigure

ptolemy.vergil.kernel.RelativeLinkFigure

All Implemented Interfaces:

CanvasComponent, Figure, VisibleComponent, UserObjectContainer

public class RelativeLinkFigure
extends AbstractFigure

A figure for drawing a link between a relative locatable and its referenced object. The link is represented by a straight thin line. FIXME: Some artifacts are visible when the relative locatable object is dragged, because the clipping region seems not to be updated quickly enough.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Miro Spoenemann

Pt.AcceptedRating:

Red (msp)

Pt.ProposedRating:

Red (msp)

Constructor Summary

Constructors

Constructor	Description
RelativeLinkFigure(RelativeLocation location)	Construct a figure to draw the link of a relative locatable object.

Method Summary

Modifier and Type	Method	Description
java.awt.Shape	getShape()	Get the outline shape of this figure.
void	paint(java.awt.Graphics2D g)	Paint the figure.
void	transform(java.awt.geom.AffineTransform at)	Set the given affine transformation for this figure.

Methods inherited from class diva.canvas.AbstractFigure

contains, getBounds, getInteractor, getLayer, getOrigin, getParent, getToolTipText, getTransformContext, getUserObject, hit, intersects, isVisible, paint, repaint, repaint, setInteractor, setParent, setToolTipText, setUserObject, setVisible, translate

Methods inherited from class java.lang.Object

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

Constructor Detail

RelativeLinkFigure

public RelativeLinkFigure(RelativeLocation location)

Construct a figure to draw the link of a relative locatable object.

Parameters:

location - The location of the relative locatable object.

Method Detail

getShape

public java.awt.Shape getShape()

Get the outline shape of this figure. This implementation returns a line.

Specified by:

getShape in interface Figure

Specified by:

getShape in class AbstractFigure

Returns:

A line, which may have length 0 if the related object has no valid reference.

paint

public void paint(java.awt.Graphics2D g)

Paint the figure. This implementation paints a line if the related object has a valid reference, and it paints nothing if it hasn't. If the length of the line exceeds a specific threshold, it is drawn with a different color to highlight that the reference will eventually be broken.

Specified by:

paint in interface VisibleComponent

Specified by:

paint in class AbstractFigure

Parameters:

g - The graphics context used for painting.

transform

public void transform(java.awt.geom.AffineTransform at)

Set the given affine transformation for this figure.

Specified by:

transform in interface Figure

Specified by:

transform in class AbstractFigure

Parameters:

at - an affine transformation