numberaxis3d.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 171 行

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2005, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * -----------------
 * NumberAxis3D.java
 * -----------------
 * (C) Copyright 2001-2004, by Serge V. Grachov and Contributors.
 *
 * Original Author:  Serge V. Grachov;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *                   Jonathan Nash;
 *                   Richard Atkinson;
 *                   Tin Luu;
 *
 * $Id: NumberAxis3D.java,v 1.5 2005/05/19 13:58:11 mungady Exp $
 *
 * Changes
 * -------
 * 31-Oct-2001 : Version 1 contributed by Serge V. Grachov (DG);
 * 23-Nov-2001 : Overhauled auto tick unit code for all axes (DG);
 * 12-Dec-2001 : Minor change due to grid lines bug fix (DG);
 * 08-Jan-2002 : Added flag allowing the axis to be 'inverted'.  That is, run 
 *               from positive to negative.  Added default values to 
 *               constructors (DG);
 * 16-Jan-2002 : Added an optional crosshair, based on the implementation by 
 *               Jonathan Nash (DG);
 * 25-Feb-2002 : Updated constructors for new autoRangeStickyZero flag (DG);
 * 19-Apr-2002 : drawVerticalString() is now drawRotatedString() in 
 *               RefineryUtilities (DG);
 * 25-Jun-2002 : Removed redundant import (DG);
 * 25-Jul-2002 : Changed order of parameters in ValueAxis constructor (DG);
 * 06-Aug-2002 : Modified draw method to not draw axis label if label is empty 
 *               String (RA);
 * 05-Sep-2002 : Updated constructor for changes in the Axis class, and changed
 *               draw method to observe tickMarkPaint (DG);
 * 22-Sep-2002 : Fixed errors reported by Checkstyle (DG);
 * 08-Nov-2002 : Moved to new package com.jrefinery.chart.axis (DG);
 * 20-Jan-2003 : Removed unnecessary constructors (DG);
 * 26-Mar-2003 : Implemented Serializable (DG);
 * 13-May-2003 : Merged HorizontalNumberAxis3D and VerticalNumberAxis3D (DG);
 * 21-Aug-2003 : Updated draw() method signature (DG);
 * 07-Nov-2003 : Modified refreshTicks method signature (DG);
 *
 */

package org.jfree.chart.axis;

import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import java.util.List;

import org.jfree.chart.Effect3D;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.ui.RectangleEdge;

/**
 * A standard linear value axis, for values displayed vertically.
 *
 * @author Serge V. Grachov
 */
public class NumberAxis3D extends NumberAxis implements Serializable {

    /** For serialization. */
    private static final long serialVersionUID = -1790205852569123512L;
    
    /**
     * Default constructor.
     */
    public NumberAxis3D() {
        this(null);    
    }
    
    /**
     * Constructs a new axis.
     *
     * @param label  the axis label (<code>null</code> permitted).
     */
    public NumberAxis3D(String label) {
        super(label);
        setAxisLineVisible(false);
    }

    /**
     * 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.
     * @param plotArea  the area for drawing the axes and data.
     * @param dataArea  the area for drawing the data (a subset of the 
     *                  plotArea).
     * @param edge  the axis location.
     * @param plotState  collects information about the plot (<code>null</code>
     *                   permitted).
     * 
     * @return The updated cursor value.
     */
    public AxisState draw(Graphics2D g2, 
                          double cursor,
                          Rectangle2D plotArea, 
                          Rectangle2D dataArea, 
                          RectangleEdge edge,
                          PlotRenderingInfo plotState) {

        // if the axis is not visible, don't draw it...
        if (!isVisible()) {
            AxisState state = new AxisState(cursor);
            // even though the axis is not visible, we need ticks for the 
            // gridlines...
            List ticks = refreshTicks(g2, state, dataArea, edge); 
            state.setTicks(ticks);
            return state;
        }

        // 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();

        if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) {
            adjustedY += e3D.getYOffset();
        }
        else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) {
            adjustedX += e3D.getXOffset();
        }
        Rectangle2D adjustedDataArea = new Rectangle2D.Double(
            adjustedX, adjustedY, adjustedW, adjustedH
        );

        // draw the tick marks and labels...
        AxisState info = drawTickMarksAndLabels(
            g2, cursor, plotArea, adjustedDataArea, edge
        );
       
        // draw the axis label...
        info = drawLabel(getLabel(), g2, plotArea, dataArea, edge, info);

        return info;
        
    }

}