org.jfree.chart.util

Class DirectionalGradientPaintTransformer

java.lang.Object

org.jfree.chart.util.DirectionalGradientPaintTransformer

All Implemented Interfaces:

org.jfree.ui.GradientPaintTransformer

public class DirectionalGradientPaintTransformer
extends Object
implements org.jfree.ui.GradientPaintTransformer

Transforms a GradientPaint to range over the width of a target shape. The orientation of the resulting GradientPaint depend on the coordinates of the original paint:

• If the original paint starts at 0,0 and ends at a point 0, y != 0, the resulting paint will have a vertical orientation.
• If the original paint starts at 0,0 and ends at a point x !=0, 0, the resulting paint will have a horizontal orientation.
• If the original paint starts at 0,0 and ends at a point x != 0, y != 0, the resulting paint will have a diagonal orientation from the upper left to the lower right edge. Lines of equal color will have a 45 ∞ angle, pointing upwards from left to right.
• If the original paint starts at a point x != 0, y != 0, the resulting paint will have a diagonal orientation from the lower left to the upper right edge. Lines of equal color will have a 45 ∞ angle, pointing downwards from left to right.

In all cases, the cyclic flag of the original paint will be taken into account.

Since:

1.0.17

Author:

Peter Kolb

Constructor Summary

Constructors

Constructor and Description
DirectionalGradientPaintTransformer() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
GradientPaint	transform(GradientPaint paint, Shape target) Transforms a GradientPaint instance to fit some target shape.

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectionalGradientPaintTransformer

public DirectionalGradientPaintTransformer()

Default constructor.

Method Detail

transform

public GradientPaint transform(GradientPaint paint,
                      Shape target)

Transforms a GradientPaint instance to fit some target shape.

Specified by:

transform in interface org.jfree.ui.GradientPaintTransformer

Parameters:

paint - the original paint (not null).

target - the reference area (not null).

Returns:

A transformed paint.