org.jfree.chart.util
Class DefaultShadowGenerator

java.lang.Object
  org.jfree.chart.util.DefaultShadowGenerator

All Implemented Interfaces:

Serializable, ShadowGenerator

public class DefaultShadowGenerator
extends Object
implements ShadowGenerator, Serializable

A default implementation of the ShadowGenerator interface, based on code in a blog post by Romain Guy.

Since:

1.0.14

See Also:

Serialized Form

Constructor Summary

DefaultShadowGenerator()
Creates a new instance with default attributes.

DefaultShadowGenerator(int size, Color color, float opacity, int distance, double angle)
Creates a new instance with the specified attributes.

Method Summary

protected void	applyShadow(BufferedImage image) Applies a shadow to the image.
int	calculateOffsetX() Calculates the x-offset for drawing the shadow image relative to the source.
int	calculateOffsetY() Calculates the y-offset for drawing the shadow image relative to the source.
BufferedImage	createDropShadow(BufferedImage source) Creates and returns an image containing the drop shadow for the specified source image.
boolean	equals(Object obj) Tests this object for equality with an arbitrary object.
double	getAngle() Returns the shadow offset angle (in radians).
int	getDistance() Returns the shadow offset distance.
Color	getShadowColor() Returns the shadow color.
float	getShadowOpacity() Returns the shadow opacity.
int	getShadowSize() Returns the shadow size.
int	hashCode() Returns a hash code for this instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultShadowGenerator

public DefaultShadowGenerator()

Creates a new instance with default attributes.

DefaultShadowGenerator

public DefaultShadowGenerator(int size,
                              Color color,
                              float opacity,
                              int distance,
                              double angle)

Creates a new instance with the specified attributes.

Parameters:

size - the shadow size.

color - the shadow color.

opacity - the shadow opacity.

distance - the shadow offset distance.

angle - the shadow offset angle (in radians).

Method Detail

getShadowSize

public int getShadowSize()

Returns the shadow size.

Returns:

The shadow size.

getShadowColor

public Color getShadowColor()

Returns the shadow color.

Returns:

The shadow color (never null).

getShadowOpacity

public float getShadowOpacity()

Returns the shadow opacity.

Returns:

The shadow opacity.

getDistance

public int getDistance()

Returns the shadow offset distance.

Returns:

The shadow offset distance (in Java2D units).

getAngle

public double getAngle()

Returns the shadow offset angle (in radians).

Returns:

The angle (in radians).

calculateOffsetX

public int calculateOffsetX()

Calculates the x-offset for drawing the shadow image relative to the source.

Specified by:

calculateOffsetX in interface ShadowGenerator

Returns:

The x-offset.

calculateOffsetY

public int calculateOffsetY()

Calculates the y-offset for drawing the shadow image relative to the source.

Specified by:

calculateOffsetY in interface ShadowGenerator

Returns:

The y-offset.

createDropShadow

public BufferedImage createDropShadow(BufferedImage source)

Creates and returns an image containing the drop shadow for the specified source image.

Specified by:

createDropShadow in interface ShadowGenerator

Parameters:

source - the source image.

Returns:

A new image containing the shadow.

applyShadow

protected void applyShadow(BufferedImage image)

Applies a shadow to the image.

Parameters:

image - the image.

equals

public boolean equals(Object obj)

Tests this object for equality with an arbitrary object.

Overrides:

equals in class Object

Parameters:

obj - the object (null permitted).

Returns:

The object.

hashCode

public int hashCode()

Returns a hash code for this instance.

Overrides:

hashCode in class Object

Returns:

The hash code.