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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D APIs, it currently supports bar charts, pie charts,
line charts, XY-plots and time series plots.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, 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.]
*
* ---------------------
* XYLine3DRenderer.java
* ---------------------
* (C) Copyright 2005-2008, by Object Refinery Limited.
*
* Original Author: Thomas Morgner;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* Changes
* -------
* 14-Jan-2005 : Added standard header (DG);
* 01-May-2007 : Fixed equals() and serialization bugs (DG);
*
*/
package org.jfree.chart.renderer.xy;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import org.jfree.chart.Effect3D;
import org.jfree.chart.event.RendererChangeEvent;
import org.jfree.io.SerialUtilities;
import org.jfree.util.PaintUtilities;
/**
* A XYLineAndShapeRenderer that adds a shadow line to the graph
* to emulate a 3D-effect.
*/
public class XYLine3DRenderer extends XYLineAndShapeRenderer
implements Effect3D, Serializable {
/** For serialization. */
private static final long serialVersionUID = 588933208243446087L;
/** The default x-offset for the 3D effect. */
public static final double DEFAULT_X_OFFSET = 12.0;
/** The default y-offset for the 3D effect. */
public static final double DEFAULT_Y_OFFSET = 8.0;
/** The default wall paint. */
public static final Paint DEFAULT_WALL_PAINT = new Color(0xDD, 0xDD, 0xDD);
/** The size of x-offset for the 3D effect. */
private double xOffset;
/** The size of y-offset for the 3D effect. */
private double yOffset;
/** The paint used to shade the left and lower 3D wall. */
private transient Paint wallPaint;
/**
* Creates a new renderer.
*/
public XYLine3DRenderer() {
this.wallPaint = DEFAULT_WALL_PAINT;
this.xOffset = DEFAULT_X_OFFSET;
this.yOffset = DEFAULT_Y_OFFSET;
}
/**
* Returns the x-offset for the 3D effect.
*
* @return The 3D effect.
*/
@Override
public double getXOffset() {
return this.xOffset;
}
/**
* Returns the y-offset for the 3D effect.
*
* @return The 3D effect.
*/
@Override
public double getYOffset() {
return this.yOffset;
}
/**
* Sets the x-offset and sends a {@link RendererChangeEvent} to all
* registered listeners.
*
* @param xOffset the x-offset.
*/
public void setXOffset(double xOffset) {
this.xOffset = xOffset;
fireChangeEvent();
}
/**
* Sets the y-offset and sends a {@link RendererChangeEvent} to all
* registered listeners.
*
* @param yOffset the y-offset.
*/
public void setYOffset(double yOffset) {
this.yOffset = yOffset;
fireChangeEvent();
}
/**
* Returns the paint used to highlight the left and bottom wall in the plot
* background.
*
* @return The paint.
*/
public Paint getWallPaint() {
return this.wallPaint;
}
/**
* Sets the paint used to hightlight the left and bottom walls in the plot
* background and sends a {@link RendererChangeEvent} to all registered
* listeners.
*
* @param paint the paint.
*/
public void setWallPaint(Paint paint) {
this.wallPaint = paint;
fireChangeEvent();
}
/**
* Returns the number of passes through the data that the renderer requires
* in order to draw the chart. Most charts will require a single pass,
* but some require two passes.
*
* @return The pass count.
*/
@Override
public int getPassCount() {
return 3;
}
/**
* Returns true if the specified pass involves drawing lines.
*
* @param pass the pass.
*
* @return A boolean.
*/
@Override
protected boolean isLinePass(int pass) {
return pass == 0 || pass == 1;
}
/**
* Returns true if the specified pass involves drawing items.
*
* @param pass the pass.
*
* @return A boolean.
*/
@Override
protected boolean isItemPass(int pass) {
return pass == 2;
}
/**
* Returns true if the specified pass involves drawing shadows.
*
* @param pass the pass.
*
* @return A boolean.
*/
protected boolean isShadowPass (int pass) {
return pass == 0;
}
/**
* Overrides the method in the subclass to draw a shadow in the first pass.
*
* @param g2 the graphics device.
* @param pass the pass.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
* @param shape the shape.
*/
@Override
protected void drawFirstPassShape(Graphics2D g2, int pass, int series,
int item, Shape shape) {
if (isShadowPass(pass)) {
if (getWallPaint() != null) {
g2.setStroke(getItemStroke(series, item));
g2.setPaint(getWallPaint());
g2.translate(getXOffset(), getYOffset());
g2.draw(shape);
g2.translate(-getXOffset(), -getYOffset());
}
}
else {
// now draw the real shape
super.drawFirstPassShape(g2, pass, series, item, shape);
}
}
/**
* Tests this renderer for equality with an arbitrary object.
*
* @param obj the object (null permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof XYLine3DRenderer)) {
return false;
}
XYLine3DRenderer that = (XYLine3DRenderer) obj;
if (this.xOffset != that.xOffset) {
return false;
}
if (this.yOffset != that.yOffset) {
return false;
}
if (!PaintUtilities.equal(this.wallPaint, that.wallPaint)) {
return false;
}
return super.equals(obj);
}
/**
* Provides serialization support.
*
* @param stream the input stream.
*
* @throws IOException if there is an I/O error.
* @throws ClassNotFoundException if there is a classpath problem.
*/
private void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
this.wallPaint = SerialUtilities.readPaint(stream);
}
/**
* Provides serialization support.
*
* @param stream the output stream.
*
* @throws IOException if there is an I/O error.
*/
private void writeObject(ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
SerialUtilities.writePaint(this.wallPaint, stream);
}
}