/* ===========================================================
* 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.]
*
* ---------------------------
* CategoryLineAnnotation.java
* ---------------------------
* (C) Copyright 2005-2007, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 29-Jul-2005 : Version 1, based on CategoryTextAnnotation (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 06-Mar-2007 : Reimplemented hashCode() (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.HashUtilities;
import org.jfree.chart.axis.CategoryAnchor;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;
import org.jfree.io.SerialUtilities;
import org.jfree.ui.RectangleEdge;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PaintUtilities;
/**
* A line annotation that can be placed on a {@link CategoryPlot}.
*/
public class CategoryLineAnnotation implements CategoryAnnotation,
Cloneable, Serializable {
/** For serialization. */
static final long serialVersionUID = 3477740483341587984L;
/** The category for the start of the line. */
private Comparable category1;
/** The value for the start of the line. */
private double value1;
/** The category for the end of the line. */
private Comparable category2;
/** The value for the end of the line. */
private double value2;
/** The line color. */
private transient Paint paint = Color.black;
/** The line stroke. */
private transient Stroke stroke = new BasicStroke(1.0f);
/**
* Creates a new annotation that draws a line between (category1, value1)
* and (category2, value2).
*
* @param category1 the category (<code>null</code> not permitted).
* @param value1 the value.
* @param category2 the category (<code>null</code> not permitted).
* @param value2 the value.
* @param paint the line color (<code>null</code> not permitted).
* @param stroke the line stroke (<code>null</code> not permitted).
*/
public CategoryLineAnnotation(Comparable category1, double value1,
Comparable category2, double value2,
Paint paint, Stroke stroke) {
if (category1 == null) {
throw new IllegalArgumentException("Null 'category1' argument.");
}
if (category2 == null) {
throw new IllegalArgumentException("Null 'category2' argument.");
}
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
if (stroke == null) {
throw new IllegalArgumentException("Null 'stroke' argument.");
}
this.category1 = category1;
this.value1 = value1;
this.category2 = category2;
this.value2 = value2;
this.paint = paint;
this.stroke = stroke;
}
/**
* Returns the category for the start of the line.
*
* @return The category for the start of the line (never <code>null</code>).
*
* @see #setCategory1(Comparable)
*/
public Comparable getCategory1() {
return this.category1;
}
/**
* Sets the category for the start of the line.
*
* @param category the category (<code>null</code> not permitted).
*
* @see #getCategory1()
*/
public void setCategory1(Comparable category) {
if (category == null) {
throw new IllegalArgumentException("Null 'category' argument.");
}
this.category1 = category;
}
/**
* Returns the y-value for the start of the line.
*
* @return The y-value for the start of the line.
*
* @see #setValue1(double)
*/
public double getValue1() {
return this.value1;
}
/**
* Sets the y-value for the start of the line.
*
* @param value the value.
*
* @see #getValue1()
*/
public void setValue1(double value) {
this.value1 = value;
}
/**
* Returns the category for the end of the line.
*
* @return The category for the end of the line (never <code>null</code>).
*
* @see #setCategory2(Comparable)
*/
public Comparable getCategory2() {
return this.category2;
}
/**
* Sets the category for the end of the line.
*
* @param category the category (<code>null</code> not permitted).
*
* @see #getCategory2()
*/
public void setCategory2(Comparable category) {
if (category == null) {
throw new IllegalArgumentException("Null 'category' argument.");
}
this.category2 = category;
}
/**
* Returns the y-value for the end of the line.
*
* @return The y-value for the end of the line.
*
* @see #setValue2(double)
*/
public double getValue2() {
return this.value2;
}
/**
* Sets the y-value for the end of the line.
*
* @param value the value.
*
* @see #getValue2()
*/
public void setValue2(double value) {
this.value2 = value;
}
/**
* Returns the paint used to draw the connecting line.
*
* @return The paint (never <code>null</code>).
*
* @see #setPaint(Paint)
*/
public Paint getPaint() {
return this.paint;
}
/**
* Sets the paint used to draw the connecting line.
*
* @param paint the paint (<code>null</code> not permitted).
*
* @see #getPaint()
*/
public void setPaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.paint = paint;
}
/**
* Returns the stroke used to draw the connecting line.
*
* @return The stroke (never <code>null</code>).
*
* @see #setStroke(Stroke)
*/
public Stroke getStroke() {
return this.stroke;
}
/**
* Sets the stroke used to draw the connecting line.
*
* @param stroke the stroke (<code>null</code> not permitted).
*
* @see #getStroke()
*/
public void setStroke(Stroke stroke) {
if (stroke == null) {
throw new IllegalArgumentException("Null 'stroke' argument.");
}
this.stroke = stroke;
}
/**
* Draws the annotation.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param dataArea the data area.
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
*/
public void draw(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea,
CategoryAxis domainAxis, ValueAxis rangeAxis) {
CategoryDataset dataset = plot.getDataset();
int catIndex1 = dataset.getColumnIndex(this.category1);
int catIndex2 = dataset.getColumnIndex(this.category2);
int catCount = dataset.getColumnCount();
double lineX1 = 0.0f;
double lineY1 = 0.0f;
double lineX2 = 0.0f;
double lineY2 = 0.0f;
PlotOrientation orientation = plot.getOrientation();
RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
plot.getDomainAxisLocation(), orientation);
RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
plot.getRangeAxisLocation(), orientation);
if (orientation == PlotOrientation.HORIZONTAL) {
lineY1 = domainAxis.getCategoryJava2DCoordinate(
CategoryAnchor.MIDDLE, catIndex1, catCount, dataArea,
domainEdge);
lineX1 = rangeAxis.valueToJava2D(this.value1, dataArea, rangeEdge);
lineY2 = domainAxis.getCategoryJava2DCoordinate(
CategoryAnchor.MIDDLE, catIndex2, catCount, dataArea,
domainEdge);
lineX2 = rangeAxis.valueToJava2D(this.value2, dataArea, rangeEdge);
}
else if (orientation == PlotOrientation.VERTICAL) {
lineX1 = domainAxis.getCategoryJava2DCoordinate(
CategoryAnchor.MIDDLE, catIndex1, catCount, dataArea,
domainEdge);
lineY1 = rangeAxis.valueToJava2D(this.value1, dataArea, rangeEdge);
lineX2 = domainAxis.getCategoryJava2DCoordinate(
CategoryAnchor.MIDDLE, catIndex2, catCount, dataArea,
domainEdge);
lineY2 = rangeAxis.valueToJava2D(this.value2, dataArea, rangeEdge);
}
g2.setPaint(this.paint);
g2.setStroke(this.stroke);
g2.drawLine((int) lineX1, (int) lineY1, (int) lineX2, (int) lineY2);
}
/**
* Tests this object for equality with another.
*
* @param obj the object (<code>null</code> permitted).
*
* @return <code>true</code> or <code>false</code>.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof CategoryLineAnnotation)) {
return false;
}
CategoryLineAnnotation that = (CategoryLineAnnotation) obj;
if (!this.category1.equals(that.getCategory1())) {
return false;
}
if (this.value1 != that.getValue1()) {
return false;
}
if (!this.category2.equals(that.getCategory2())) {
return false;
}
if (this.value2 != that.getValue2()) {
return false;
}
if (!PaintUtilities.equal(this.paint, that.paint)) {
return false;
}
if (!ObjectUtilities.equal(this.stroke, that.stroke)) {
return false;
}
return true;
}
/**
* Returns a hash code for this instance.
*
* @return A hash code.
*/
public int hashCode() {
int result = 193;
result = 37 * result + this.category1.hashCode();
long temp = Double.doubleToLongBits(this.value1);
result = 37 * result + (int) (temp ^ (temp >>> 32));
result = 37 * result + this.category2.hashCode();
temp = Double.doubleToLongBits(this.value2);
result = 37 * result + (int) (temp ^ (temp >>> 32));
result = 37 * result + HashUtilities.hashCodeForPaint(this.paint);
result = 37 * result + this.stroke.hashCode();
return result;
}
/**
* Returns a clone of the annotation.
*
* @return A clone.
*
* @throws CloneNotSupportedException this class will not throw this
* exception, but subclasses (if any) might.
*/
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
/**
* 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.paint, stream);
SerialUtilities.writeStroke(this.stroke, stream);
}
/**
* 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.paint = SerialUtilities.readPaint(stream);
this.stroke = SerialUtilities.readStroke(stream);
}
}
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