/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -----------------
* ColorPainter.java
* -----------------
* (C) Copyright 2014, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 25-Apr-2014 : Version 1, based on code from Orson Charts (DG);
*
*/
package org.jfree.chart.drawable;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import javax.swing.UIManager;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.util.ObjectUtils;
import org.jfree.chart.util.ParamChecks;
/**
* A painter that fills a rectangle with a solid color. This is used for
* standard background painting by the {@link JFreeChart} class.
*/
public class ColorPainter implements Drawable, Serializable {
/** The fill color. */
private Color color;
/**
* Creates a new instance using the background color for a panel under
* the currently installed Swing Look & Feel.
*/
public ColorPainter() {
this(UIManager.getColor("Panel.background"));
}
/**
* Creates a new painter with the specified color.
*
* @param color the color (<code>null</code> not permitted).
*/
public ColorPainter(Color color) {
ParamChecks.nullNotPermitted(color, "color");
this.color = color;
}
/**
* Returns the color used by the painter to fill rectangles.
*
* @return The color (never <code>null</code>).
*/
public Color getColor() {
return this.color;
}
/**
* Fills the specified <code>area</code> with the color that was specified
* in the constructor.
*
* @param g2 the graphics target (<code>null</code> not permitted).
* @param area the area (<code>null</code> not permitted).
*/
@Override
public void draw(Graphics2D g2, Rectangle2D area) {
ParamChecks.nullNotPermitted(g2, "g2");
ParamChecks.nullNotPermitted(area, "area");
g2.setColor(this.color);
g2.fill(area);
}
/**
* Tests this instance for equality with an arbitrary object.
*
* @param obj the object (<code>null</code> permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof ColorPainter)) {
return true;
}
ColorPainter that = (ColorPainter) obj;
if (!this.color.equals(that.color)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 7;
hash = 97 * hash + ObjectUtils.hashCode(this.color);
return hash;
}
}