/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, 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.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* --------------------
* XYBoxAnnotation.java
* --------------------
* (C) Copyright 2005-2007, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 19-Jan-2005 : Version 1 (DG);
* 06-Jun-2005 : Fixed equals() method to handle GradientPaint (DG);
*
*/
package org.jfree.chart.annotations;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Stroke;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.XYPlot;
import org.jfree.io.SerialUtilities;
import org.jfree.ui.RectangleEdge;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PaintUtilities;
import org.jfree.util.PublicCloneable;
/**
* A box annotation that can be placed on an {@link XYPlot}. The
* box coordinates are specified in data space.
*/
public class XYBoxAnnotation extends AbstractXYAnnotation
implements Cloneable,
PublicCloneable,
Serializable {
/** For serialization. */
private static final long serialVersionUID = 6764703772526757457L;
/** The lower x-coordinate. */
private double x0;
/** The lower y-coordinate. */
private double y0;
/** The upper x-coordinate. */
private double x1;
/** The upper y-coordinate. */
private double y1;
/** The stroke used to draw the box outline. */
private transient Stroke stroke;
/** The paint used to draw the box outline. */
private transient Paint outlinePaint;
/** The paint used to fill the box. */
private transient Paint fillPaint;
/**
* Creates a new annotation (where, by default, the box is drawn
* with a black outline).
*
* @param x0 the lower x-coordinate of the box (in data space).
* @param y0 the lower y-coordinate of the box (in data space).
* @param x1 the upper x-coordinate of the box (in data space).
* @param y1 the upper y-coordinate of the box (in data space).
*/
public XYBoxAnnotation(double x0, double y0, double x1, double y1) {
this(x0, y0, x1, y1, new BasicStroke(1.0f), Color.black);
}
/**
* Creates a new annotation where the box is drawn as an outline using
* the specified <code>stroke</code> and <code>outlinePaint</code>.
*
* @param x0 the lower x-coordinate of the box (in data space).
* @param y0 the lower y-coordinate of the box (in data space).
* @param x1 the upper x-coordinate of the box (in data space).
* @param y1 the upper y-coordinate of the box (in data space).
* @param stroke the shape stroke (<code>null</code> permitted).
* @param outlinePaint the shape color (<code>null</code> permitted).
*/
public XYBoxAnnotation(double x0, double y0, double x1, double y1,
Stroke stroke, Paint outlinePaint) {
this(x0, y0, x1, y1, stroke, outlinePaint, null);
}
/**
* Creates a new annotation.
*
* @param x0 the lower x-coordinate of the box (in data space).
* @param y0 the lower y-coordinate of the box (in data space).
* @param x1 the upper x-coordinate of the box (in data space).
* @param y1 the upper y-coordinate of the box (in data space).
* @param stroke the shape stroke (<code>null</code> permitted).
* @param outlinePaint the shape color (<code>null</code> permitted).
* @param fillPaint the paint used to fill the shape (<code>null</code>
* permitted).
*/
public XYBoxAnnotation(double x0, double y0, double x1, double y1,
Stroke stroke, Paint outlinePaint, Paint fillPaint) {
this.x0 = x0;
this.y0 = y0;
this.x1 = x1;
this.y1 = y1;
this.stroke = stroke;
this.outlinePaint = outlinePaint;
this.fillPaint = fillPaint;
}
/**
* Draws the annotation. This method is usually called by the
* {@link XYPlot} class, you shouldn't need to call it directly.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param dataArea the data area.
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
* @param rendererIndex the renderer index.
* @param info the plot rendering info.
*/
public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea,
ValueAxis domainAxis, ValueAxis rangeAxis,
int rendererIndex, PlotRenderingInfo info) {
PlotOrientation orientation = plot.getOrientation();
RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
plot.getDomainAxisLocation(), orientation);
RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
plot.getRangeAxisLocation(), orientation);
double transX0 = domainAxis.valueToJava2D(this.x0, dataArea,
domainEdge);
double transY0 = rangeAxis.valueToJava2D(this.y0, dataArea, rangeEdge);
double transX1 = domainAxis.valueToJava2D(this.x1, dataArea,
domainEdge);
double transY1 = rangeAxis.valueToJava2D(this.y1, dataArea, rangeEdge);
Rectangle2D box = null;
if (orientation == PlotOrientation.HORIZONTAL) {
box = new Rectangle2D.Double(transY0, transX1, transY1 - transY0,
transX0 - transX1);
}
else if (orientation == PlotOrientation.VERTICAL) {
box = new Rectangle2D.Double(transX0, transY1, transX1 - transX0,
transY0 - transY1);
}
if (this.fillPaint != null) {
g2.setPaint(this.fillPaint);
g2.fill(box);
}
if (this.stroke != null && this.outlinePaint != null) {
g2.setPaint(this.outlinePaint);
g2.setStroke(this.stroke);
g2.draw(box);
}
addEntity(info, box, rendererIndex, getToolTipText(), getURL());
}
/**
* Tests this annotation for equality with an arbitrary object.
*
* @param obj the object (<code>null</code> permitted).
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
// now try to reject equality
if (!super.equals(obj)) {
return false;
}
if (!(obj instanceof XYBoxAnnotation)) {
return false;
}
XYBoxAnnotation that = (XYBoxAnnotation) obj;
if (!(this.x0 == that.x0)) {
return false;
}
if (!(this.y0 == that.y0)) {
return false;
}
if (!(this.x1 == that.x1)) {
return false;
}
if (!(this.y1 == that.y1)) {
return false;
}
if (!ObjectUtilities.equal(this.stroke, that.stroke)) {
return false;
}
if (!PaintUtilities.equal(this.outlinePaint, that.outlinePaint)) {
return false;
}
if (!PaintUtilities.equal(this.fillPaint, that.fillPaint)) {
return false;
}
// seem to be the same
return true;
}
/**
* Returns a hash code.
*
* @return A hash code.
*/
public int hashCode() {
int result;
long temp;
temp = Double.doubleToLongBits(this.x0);
result = (int) (temp ^ (temp >>> 32));
temp = Double.doubleToLongBits(this.x1);
result = 29 * result + (int) (temp ^ (temp >>> 32));
temp = Double.doubleToLongBits(this.y0);
result = 29 * result + (int) (temp ^ (temp >>> 32));
temp = Double.doubleToLongBits(this.y1);
result = 29 * result + (int) (temp ^ (temp >>> 32));
return result;
}
/**
* Returns a clone.
*
* @return A clone.
*
* @throws CloneNotSupportedException not thrown by this class, but may be
* by subclasses.
*/
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
/**
* Provides serialization support.
*
* @param stream the output stream (<code>null</code> not permitted).
*
* @throws IOException if there is an I/O error.
*/
private void writeObject(ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
SerialUtilities.writeStroke(this.stroke, stream);
SerialUtilities.writePaint(this.outlinePaint, stream);
SerialUtilities.writePaint(this.fillPaint, stream);
}
/**
* Provides serialization support.
*
* @param stream the input stream (<code>null</code> not permitted).
*
* @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.stroke = SerialUtilities.readStroke(stream);
this.outlinePaint = SerialUtilities.readPaint(stream);
this.fillPaint = SerialUtilities.readPaint(stream);
}
}
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