net.sf.fspdfs.chartthemes.spring.ScaledDialRange.java Source code

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Here is the source code for net.sf.fspdfs.chartthemes.spring.ScaledDialRange.java

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/*
 * fspdfs - 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 fspdfs.
 *
 * fspdfs 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.
 *
 * fspdfs 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 fspdfs. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.fspdfs.chartthemes.spring;

import java.awt.BasicStroke;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.geom.Arc2D;
import java.awt.geom.Rectangle2D;

import net.sf.fspdfs.engine.JRConstants;

import org.jfree.chart.plot.dial.DialPlot;
import org.jfree.chart.plot.dial.DialScale;
import org.jfree.chart.plot.dial.StandardDialRange;

/**
 * @author sanda zaharia (shertage@users.sourceforge.net)
 * @version $Id:ScaledDialRange.java 2595 2009-02-10 17:56:51Z teodord $
 */
public class ScaledDialRange extends StandardDialRange {
    private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;

    private float lineWidth = 2f;

    /**
     * 
     */
    public ScaledDialRange() {
        super();
    }

    /**
     * @param lower
     * @param upper
     * @param paint
     */
    public ScaledDialRange(double lower, double upper, Paint paint) {
        super(lower, upper, paint);
    }

    /**
     * @param lower
     * @param upper
     * @param paint
     * @param lineWidth
     */
    public ScaledDialRange(double lower, double upper, Paint paint, float lineWidth) {
        super(lower, upper, paint);
        this.lineWidth = lineWidth;
    }

    /**
     * Draws the range.
     * 
     * @param g2  the graphics target.
     * @param plot  the plot.
     * @param frame  the dial's reference frame (in Java2D space).
     * @param view  the dial's view rectangle (in Java2D space).
     */
    public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, Rectangle2D view) {

        Rectangle2D arcRectInner = DialPlot.rectangleByRadius(frame, this.getInnerRadius(), this.getInnerRadius());
        Rectangle2D arcRectOuter = DialPlot.rectangleByRadius(frame, this.getOuterRadius(), this.getOuterRadius());

        DialScale scale = plot.getScale(this.getScaleIndex());
        if (scale == null) {
            throw new RuntimeException("No scale for scaleIndex = " + this.getScaleIndex());
        }
        double angleMin = scale.valueToAngle(this.getLowerBound());
        double angleMax = scale.valueToAngle(this.getUpperBound());

        Arc2D arcInner = new Arc2D.Double(arcRectInner, angleMin, angleMax - angleMin, Arc2D.OPEN);
        Arc2D arcOuter = new Arc2D.Double(arcRectOuter, angleMax, angleMin - angleMax, Arc2D.OPEN);

        g2.setPaint(this.getPaint());
        g2.setStroke(new BasicStroke(this.lineWidth, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER));
        g2.draw(arcInner);
        g2.draw(arcOuter);
    }

    /**
     * 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.getClass().equals(this.getClass()))) {
            return false;
        }
        ScaledDialRange that = (ScaledDialRange) obj;
        if (this.lineWidth != that.lineWidth) {
            return false;
        }
        return super.equals(obj);
    }

    /**
     * Returns a hash code for this instance.
     * 
     * @return The hash code.
     */
    public int hashCode() {
        int temp = Float.floatToIntBits(this.lineWidth);
        return 37 * super.hashCode() + (temp ^ (temp >>> 32));

    }

    /**
     * Returns a clone of this instance.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException if any of the attributes of this 
     *     instance cannot be cloned.
     */
    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }

}