org.biojava.bio.gui.sequence
Class RectangularBeadRenderer

java.lang.Object
  org.biojava.utils.AbstractChangeable
      org.biojava.bio.gui.sequence.AbstractBeadRenderer
          org.biojava.bio.gui.sequence.RectangularBeadRenderer

All Implemented Interfaces:

Serializable, BeadFeatureRenderer, FeatureRenderer, Changeable

public class RectangularBeadRenderer
extends AbstractBeadRenderer

RectangularBeadRenderer renders features as simple rectangles. Their outline and fill Paint, Stroke, feature depth, Y-axis displacement are configurable. The height of the rectangle will be equal to half its width, but not greater than the beadDepth set in the constructor.

An alternative bead height behaviour is available where the rectangle height does not scale with its current width. The setHeightScaling method should be passed a boolean value to change this. The default is to use height scaling.

Since:

1.2

Author:

Keith James

See Also:

Serialized Form

Field Summary

static ChangeType	HEIGHTSCALING Constant HEIGHTSCALING indicating a change to the feature height scaling policy.
protected Rectangle2D	rect
protected boolean	scaleHeight

Fields inherited from class org.biojava.bio.gui.sequence.AbstractBeadRenderer

beadDepth, beadDisplacement, beadFill, beadOutline, beadStroke, delegates, delegationCache, DEPTH, DISPLACEMENT, FILL, OUTLINE, STROKE

Constructor Summary

RectangularBeadRenderer()
Creates a new RectangularBeadRenderer with the default settings.

RectangularBeadRenderer(double beadDepth, double beadDisplacement, Paint beadOutline, Paint beadFill, Stroke beadStroke)
Creates a new RectangularBeadRenderer.

Method Summary

double	getDepth(SequenceRenderContext context) getDepth calculates the depth required by this renderer to display its beads.
boolean	getHeightScaling() getHeightScaling returns the state of the height scaling policy.
void	renderBead(Graphics2D g2, Feature f, SequenceRenderContext context) renderBead renders features as simple rectangle.
void	setHeightScaling(boolean isEnabled) setHeightScaling sets the height scaling policy.

Methods inherited from class org.biojava.bio.gui.sequence.AbstractBeadRenderer

getBeadDepth, getBeadDisplacement, getBeadFill, getBeadOutline, getBeadStroke, processMouseEvent, removeDelegateRenderer, renderFeature, setBeadDepth, setBeadDisplacement, setBeadFill, setBeadOutline, setBeadStroke, setDelegateRenderer

Methods inherited from class org.biojava.utils.AbstractChangeable

addChangeListener, addChangeListener, generateChangeSupport, getChangeSupport, hasListeners, hasListeners, isUnchanging, removeChangeListener, removeChangeListener

Methods inherited from class java.lang.Object

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

Field Detail

HEIGHTSCALING

public static final ChangeType HEIGHTSCALING

Constant HEIGHTSCALING indicating a change to the feature height scaling policy.

rect

protected Rectangle2D rect

scaleHeight

protected boolean scaleHeight

Constructor Detail

RectangularBeadRenderer

public RectangularBeadRenderer()

Creates a new RectangularBeadRenderer with the default settings.

RectangularBeadRenderer

public RectangularBeadRenderer(double beadDepth,
                               double beadDisplacement,
                               Paint beadOutline,
                               Paint beadFill,
                               Stroke beadStroke)

Creates a new RectangularBeadRenderer.

Parameters:

beadDepth - a double.

beadDisplacement - a double.

beadOutline - a Paint.

beadFill - a Paint.

beadStroke - a Stroke.

Method Detail

renderBead

public void renderBead(Graphics2D g2,
                       Feature f,
                       SequenceRenderContext context)

renderBead renders features as simple rectangle.

Specified by:

renderBead in interface BeadFeatureRenderer

Specified by:

renderBead in class AbstractBeadRenderer

Parameters:

g2 - a Graphics2D.

f - a Feature to render.

context - a SequenceRenderContext context.

getDepth

public double getDepth(SequenceRenderContext context)

getDepth calculates the depth required by this renderer to display its beads.

Specified by:

getDepth in interface FeatureRenderer

Overrides:

getDepth in class AbstractBeadRenderer

Parameters:

context - a SequenceRenderContext.

Returns:

a double.

getHeightScaling

public boolean getHeightScaling()

getHeightScaling returns the state of the height scaling policy.

Returns:

a boolean true if height scaling is enabled.

setHeightScaling

public void setHeightScaling(boolean isEnabled)
                      throws ChangeVetoException

setHeightScaling sets the height scaling policy. Default behaviour is for this to be enabled leading to features being drawn with a height equal to half their width, subject to a maximum height restriction equal to the beadDepth set in the constructor. If disabled, features will always be drawn at the maximum height allowed by the beadDepth parameter.

Parameters:

isEnabled - a boolean.

Throws:

ChangeVetoException - if an error occurs.