www.pudn.com > jfreechart-0.9.12.zip > CategoryAxis3D.java

/* ====================================== 
 * JFreeChart : a free Java chart library 
 * ====================================== 
 * 
 * Project Info:  http://www.jfree.org/jfreechart/index.html 
 * Project Lead:  David Gilbert (david.gilbert@object-refinery.com); 
 * 
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors. 
 * 
 * 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., 59 Temple Place, Suite 330, 
 * Boston, MA 02111-1307, USA. 
 * 
 * ------------------- 
 * CategoryAxis3D.java 
 * ------------------- 
 * (C) Copyright 2003, by Klaus Rheinwald and Contributors. 
 * 
 * Original Author:  Klaus Rheinwald; 
 * Contributor(s):   Tin Luu, 
 *                   David Gilbert (for Object Refinery Limited); 
 * 
 * Changes 
 * ------- 
 * 19-Feb-2003 : File creation; 
 * 21-Mar-2003 : Added to JFreeChart CVS, see bug id 685501 for code contribution from KR (DG); 
 * 26-Mar-2003 : Implemented Serializable (DG); 
 * 13-May-2003 : Renamed HorizontalCategoryAxis3D --> CategoryAxis3D, and modified to take into 
 *               account the plot orientation (DG); 
 * 14-Aug-2003 : Implemented Cloneable (DG); 
 * 21-Aug-2003 : Fixed draw(...) method bugs (DG); 
 * 
 */ 
 
package org.jfree.chart.axis; 
 
import java.awt.Graphics2D; 
import java.awt.geom.Rectangle2D; 
import java.io.Serializable; 
 
import org.jfree.chart.Effect3D; 
import org.jfree.chart.plot.CategoryPlot; 
import org.jfree.ui.RectangleEdge; 
 
/** 
 * An axis that displays categories and has a 3D effect. 
 * Used for bar charts and line charts. 
 * 
 * @author Klaus Rheinwald 
 */ 
public class CategoryAxis3D extends CategoryAxis implements Cloneable, Serializable { 
 
    /** 
     * Creates a new axis. 
     */ 
    public CategoryAxis3D() { 
        this(null); 
    } 
     
    /** 
     * Creates a new axis using default attribute values. 
     * 
     * @param label  the axis label (null permitted). 
     */ 
    public CategoryAxis3D(String label) { 
        super(label); 
    } 
 
    /** 
     * Draws the axis on a Java 2D graphics device (such as the screen or a printer). 
     * 
     * @param g2  the graphics device. 
     * @param cursor  the cursor location. 
     * @param plotArea  the area within which the axis should be drawn. 
     * @param dataArea  the area within which the plot is being drawn. 
     * @param edge  the location of the axis. 
     *  
     * @return The updated cursor value. 
     */ 
    public double draw(Graphics2D g2, double cursor, 
                       Rectangle2D plotArea, Rectangle2D dataArea, RectangleEdge edge) { 
 
        // if the axis is not visible, don't draw it... 
        if (!isVisible()) { 
            return 0.0; 
        } 
 
        // calculate the adjusted data area taking into account the 3D effect... 
        CategoryPlot plot = (CategoryPlot) getPlot(); 
 
        Effect3D e3D = (Effect3D) plot.getRenderer(); 
        double adjustedX = dataArea.getMinX(); 
        double adjustedY = dataArea.getMinY(); 
        double adjustedW = dataArea.getWidth() - e3D.getXOffset(); 
        double adjustedH = dataArea.getHeight() - e3D.getYOffset(); 
 
        Rectangle2D adjustedDataArea1 = new Rectangle2D.Double(adjustedX,  
                                                               adjustedY + e3D.getYOffset(), 
                                                               adjustedW, adjustedH); 
        if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) { 
            adjustedY += e3D.getYOffset(); 
        } 
        else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) { 
            adjustedX += e3D.getXOffset(); 
        } 
        Rectangle2D adjustedDataArea2 = new Rectangle2D.Double(adjustedX, adjustedY, 
                                                               adjustedW, adjustedH); 
 
        // draw the category labels 
        double used1 = 0.0; 
        if (edge == RectangleEdge.TOP || edge == RectangleEdge.BOTTOM) { 
            used1 = drawHorizontalCategoryLabels(g2, cursor, plotArea, adjustedDataArea2, edge); 
        } 
        else if (edge == RectangleEdge.LEFT || edge == RectangleEdge.RIGHT) { 
            used1 = drawVerticalCategoryLabels(g2, cursor, plotArea, adjustedDataArea2, edge); 
        } 
        if (edge == RectangleEdge.TOP || edge == RectangleEdge.LEFT) { 
            cursor = cursor - used1; 
        } 
        else if (edge == RectangleEdge.BOTTOM || edge == RectangleEdge.RIGHT) { 
            cursor = cursor + used1; 
        } 
 
        // draw the axis label... 
        double used2 = drawLabel(getLabel(), g2, cursor, plotArea, dataArea, edge); 
 
        return used1 + used2; 
         
    } 
 
    /** 
     * Returns a clone of the axis. 
     *  
     * @return A clone. 
     *  
     * @throws CloneNotSupportedException If the axis is not cloneable for some reason. 
     */ 
    public Object clone() throws CloneNotSupportedException { 
        return super.clone(); 
    } 
}