/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.chartthemes.spring;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.geom.Arc2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import net.sf.jasperreports.engine.JRConstants;
import org.jfree.chart.plot.dial.DialPlot;
import org.jfree.chart.plot.dial.DialValueIndicator;
import org.jfree.text.TextUtilities;
import org.jfree.ui.RectangleAnchor;
import org.jfree.ui.Size2D;
/**
* @author sanda zaharia (shertage@users.sourceforge.net)
* @version $Id:ScaledDialValueIndicator.java 2595 2009-02-10 17:56:51Z teodord $
*/
public class ScaledDialValueIndicator extends DialValueIndicator
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
private int scale;
/**
* Creates a new instance of <code>DialValueIndicator</code>.
*/
public ScaledDialValueIndicator() {
this(0,1);
}
/**
* Creates a new instance of <code>DialValueIndicator</code>.
*
* @param datasetIndex the dataset index.
*/
public ScaledDialValueIndicator(int datasetIndex) {
this(datasetIndex, 1);
}
/**
* Creates a new instance of <code>DialValueIndicator</code>.
*
* @param datasetIndex the dataset index.
* @param scale the scale.
*/
public ScaledDialValueIndicator(int datasetIndex, int scale) {
super(datasetIndex);
setScale(scale);
}
/**
* Draws the background to the specified graphics device. If the dial
* frame specifies a window, the clipping region will already have been
* set to this window before this method is called.
*
* @param g2 the graphics device (<code>null</code> not permitted).
* @param plot the plot (ignored here).
* @param frame the dial frame (ignored here).
* @param view the view rectangle (<code>null</code> not permitted).
*/
public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame,
Rectangle2D view) {
// work out the anchor point
Rectangle2D f = DialPlot.rectangleByRadius(frame, getRadius(),
this.getRadius());
Arc2D arc = new Arc2D.Double(f, this.getAngle(), 0.0, Arc2D.OPEN);
Point2D pt = arc.getStartPoint();
// calculate the bounds of the template value
FontMetrics fm = g2.getFontMetrics(this.getFont());
String s = this.getNumberFormat().format(this.getTemplateValue());
Rectangle2D tb = TextUtilities.getTextBounds(s, g2, fm);
// align this rectangle to the frameAnchor
Rectangle2D bounds = RectangleAnchor.createRectangle(new Size2D(
tb.getWidth(), tb.getHeight()), pt.getX(), pt.getY(),
this.getFrameAnchor());
// add the insets
Rectangle2D fb = this.getInsets().createOutsetRectangle(bounds);
// draw the background
g2.setPaint(this.getBackgroundPaint());
g2.fill(fb);
// draw the border
g2.setStroke(this.getOutlineStroke());
g2.setPaint(this.getOutlinePaint());
g2.draw(fb);
// now find the text anchor point
String valueStr = this.getNumberFormat().format(ChartThemesUtilities.getScaledValue(plot.getValue(this.getDatasetIndex()), scale));
Point2D pt2 = RectangleAnchor.coordinates(bounds, this.getValueAnchor());
g2.setPaint(this.getPaint());
g2.setFont(this.getFont());
TextUtilities.drawAlignedString(valueStr, g2, (float) pt2.getX(),
(float) pt2.getY(), this.getTextAnchor());
}
/**
* @return the scale
*/
public int getScale()
{
return this.scale;
}
/**
* @param scale the scale to set
*/
public void setScale(int scale)
{
this.scale = scale;
}
/**
* 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 ScaledDialValueIndicator)) {
return false;
}
ScaledDialValueIndicator that = (ScaledDialValueIndicator) obj;
if (this.scale != that.scale) {
return false;
}
return super.equals(obj);
}
/**
* Returns a hash code for this instance.
*
* @return The hash code.
*/
public int hashCode() {
return 37 * super.hashCode() + scale;
}
/**
* Returns a clone of this instance.
*
* @return The clone.
*
* @throws CloneNotSupportedException if some attribute of this instance
* cannot be cloned.
*/
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}