/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.]
*
* ----------------------
* StandardDialFrame.java
* ----------------------
* (C) Copyright 2006-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 03-Nov-2006 : Version 1 (DG);
* 08-Mar-2007 : Fix in hashCode() (DG);
* 29-Oct-2007 : Renamed StandardDialFrame (DG);
*
*/
package org.jfree.chart.plot.dial;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
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.io.SerialUtilities;
import org.jfree.util.PaintUtilities;
import org.jfree.util.PublicCloneable;
/**
* A simple circular frame for the {@link DialPlot} class.
*
* @since 1.0.7
*/
public class StandardDialFrame extends AbstractDialLayer implements DialFrame,
Cloneable, PublicCloneable, Serializable {
/** For serialization. */
static final long serialVersionUID = 1016585407507121596L;
/** The outer radius, relative to the framing rectangle. */
private double radius;
/**
* The color used for the front of the panel. This field is transient
* because it requires special handling for serialization.
*/
private transient Paint backgroundPaint;
/**
* The color used for the border around the window. This field is transient
* because it requires special handling for serialization.
*/
private transient Paint foregroundPaint;
/**
* The stroke for drawing the frame outline. This field is transient
* because it requires special handling for serialization.
*/
private transient Stroke stroke;
/**
* Creates a new instance of <code>StandardDialFrame</code>.
*/
public StandardDialFrame() {
this.backgroundPaint = Color.gray;
this.foregroundPaint = Color.black;
this.stroke = new BasicStroke(2.0f);
this.radius = 0.95;
}
/**
* Returns the radius, relative to the framing rectangle.
*
* @return The radius.
*
* @see #setRadius(double)
*/
public double getRadius() {
return this.radius;
}
/**
* Sets the radius and sends a {@link DialLayerChangeEvent} to all
* registered listeners.
*
* @param radius the radius (must be positive).
*
* @see #getRadius()
*/
public void setRadius(double radius) {
if (radius <= 0) {
throw new IllegalArgumentException(
"The 'radius' must be positive.");
}
this.radius = radius;
notifyListeners(new DialLayerChangeEvent(this));
}
/**
* Returns the background paint.
*
* @return The background paint (never <code>null</code>).
*
* @see #setBackgroundPaint(Paint)
*/
public Paint getBackgroundPaint() {
return this.backgroundPaint;
}
/**
* Sets the background paint and sends a {@link DialLayerChangeEvent} to
* all registered listeners.
*
* @param paint the paint (<code>null</code> not permitted).
*
* @see #getBackgroundPaint()
*/
public void setBackgroundPaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.backgroundPaint = paint;
notifyListeners(new DialLayerChangeEvent(this));
}
/**
* Returns the foreground paint.
*
* @return The foreground paint (never <code>null</code>).
*
* @see #setForegroundPaint(Paint)
*/
public Paint getForegroundPaint() {
return this.foregroundPaint;
}
/**
* Sets the foreground paint and sends a {@link DialLayerChangeEvent} to
* all registered listeners.
*
* @param paint the paint (<code>null</code> not permitted).
*
* @see #getForegroundPaint()
*/
public void setForegroundPaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.foregroundPaint = paint;
notifyListeners(new DialLayerChangeEvent(this));
}
/**
* Returns the stroke for the frame.
*
* @return The stroke (never <code>null</code>).
*
* @see #setStroke(Stroke)
*/
public Stroke getStroke() {
return this.stroke;
}
/**
* Sets the stroke and sends a {@link DialLayerChangeEvent} to all
* registered listeners.
*
* @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;
notifyListeners(new DialLayerChangeEvent(this));
}
/**
* Returns the shape for the window for this dial. Some dial layers will
* request that their drawing be clipped within this window.
*
* @param frame the reference frame (<code>null</code> not permitted).
*
* @return The shape of the dial's window.
*/
public Shape getWindow(Rectangle2D frame) {
Rectangle2D f = DialPlot.rectangleByRadius(frame, this.radius,
this.radius);
return new Ellipse2D.Double(f.getX(), f.getY(), f.getWidth(),
f.getHeight());
}
/**
* Returns <code>false</code> to indicate that this dial layer is not
* clipped to the dial window.
*
* @return A boolean.
*/
public boolean isClippedToWindow() {
return false;
}
/**
* Draws the frame. This method is called by the {@link DialPlot} class,
* you shouldn't need to call it directly.
*
* @param g2 the graphics target (<code>null</code> not permitted).
* @param plot the plot (<code>null</code> not permitted).
* @param frame the frame (<code>null</code> not permitted).
* @param view the view (<code>null</code> not permitted).
*/
public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame,
Rectangle2D view) {
Shape window = getWindow(frame);
Rectangle2D f = DialPlot.rectangleByRadius(frame, this.radius + 0.02,
this.radius + 0.02);
Ellipse2D e = new Ellipse2D.Double(f.getX(), f.getY(), f.getWidth(),
f.getHeight());
Area area = new Area(e);
Area area2 = new Area(window);
area.subtract(area2);
g2.setPaint(this.backgroundPaint);
g2.fill(area);
g2.setStroke(this.stroke);
g2.setPaint(this.foregroundPaint);
g2.draw(window);
g2.draw(e);
}
/**
* Tests this instance 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;
}
if (!(obj instanceof StandardDialFrame)) {
return false;
}
StandardDialFrame that = (StandardDialFrame) obj;
if (!PaintUtilities.equal(this.backgroundPaint, that.backgroundPaint)) {
return false;
}
if (!PaintUtilities.equal(this.foregroundPaint, that.foregroundPaint)) {
return false;
}
if (this.radius != that.radius) {
return false;
}
if (!this.stroke.equals(that.stroke)) {
return false;
}
return super.equals(obj);
}
/**
* Returns a hash code for this instance.
*
* @return The hash code.
*/
public int hashCode() {
int result = 193;
long temp = Double.doubleToLongBits(this.radius);
result = 37 * result + (int) (temp ^ (temp >>> 32));
result = 37 * result + HashUtilities.hashCodeForPaint(
this.backgroundPaint);
result = 37 * result + HashUtilities.hashCodeForPaint(
this.foregroundPaint);
result = 37 * result + this.stroke.hashCode();
return result;
}
/**
* Returns a clone of this instance.
*
* @return A clone.
*
* @throws CloneNotSupportedException if any of the frame's attributes
* cannot be cloned.
*/
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.backgroundPaint, stream);
SerialUtilities.writePaint(this.foregroundPaint, 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.backgroundPaint = SerialUtilities.readPaint(stream);
this.foregroundPaint = SerialUtilities.readPaint(stream);
this.stroke = SerialUtilities.readStroke(stream);
}
}
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