lineandshaperenderer.java

java图形利器

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2007, 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.  
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * -------------------------
 * LineAndShapeRenderer.java
 * -------------------------
 * (C) Copyright 2001-2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Mark Watson (www.markwatson.com);
 *                   Jeremy Bowman;
 *                   Richard Atkinson;
 *                   Christian W. Zuckschwerdt;
 *
 * $Id: LineAndShapeRenderer.java,v 1.18.2.10 2007/05/18 10:28:27 mungady Exp $
 *
 * Changes
 * -------
 * 23-Oct-2001 : Version 1 (DG);
 * 15-Nov-2001 : Modified to allow for null data values (DG);
 * 16-Jan-2002 : Renamed HorizontalCategoryItemRenderer.java 
 *               --> CategoryItemRenderer.java (DG);
 * 05-Feb-2002 : Changed return type of the drawCategoryItem method from void 
 *               to Shape, as part of the tooltips implementation (DG);
 * 11-May-2002 : Support for value label drawing (JB);
 * 29-May-2002 : Now extends AbstractCategoryItemRenderer (DG);
 * 25-Jun-2002 : Removed redundant import (DG);
 * 05-Aug-2002 : Small modification to drawCategoryItem method to support URLs 
 *               for HTML image maps (RA);
 * 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
 * 11-Oct-2002 : Added new constructor to incorporate tool tip and URL 
 *               generators (DG);
 * 24-Oct-2002 : Amendments for changes in CategoryDataset interface and 
 *               CategoryToolTipGenerator interface (DG);
 * 05-Nov-2002 : Base dataset is now TableDataset not CategoryDataset (DG);
 * 06-Nov-2002 : Renamed drawCategoryItem() --> drawItem() and now using axis 
 *               for category spacing (DG);
 * 17-Jan-2003 : Moved plot classes to a separate package (DG);
 * 10-Apr-2003 : Changed CategoryDataset to KeyedValues2DDataset in drawItem()
 *               method (DG);
 * 12-May-2003 : Modified to take into account the plot orientation (DG);
 * 29-Jul-2003 : Amended code that doesn't compile with JDK 1.2.2 (DG);
 * 30-Jul-2003 : Modified entity constructor (CZ);
 * 22-Sep-2003 : Fixed cloning (DG);
 * 10-Feb-2004 : Small change to drawItem() method to make cut-and-paste 
 *               override easier (DG);
 * 16-Jun-2004 : Fixed bug (id=972454) with label positioning on horizontal 
 *               charts (DG);
 * 15-Oct-2004 : Updated equals() method (DG);
 * 05-Nov-2004 : Modified drawItem() signature (DG);
 * 11-Nov-2004 : Now uses ShapeUtilities class to translate shapes (DG);
 * 27-Jan-2005 : Changed attribute names, modified constructor and removed 
 *               constants (DG);
 * 01-Feb-2005 : Removed unnecessary constants (DG);
 * 15-Mar-2005 : Fixed bug 1163897, concerning outlines for shapes (DG);
 * 13-Apr-2005 : Check flags that control series visibility (DG);
 * 20-Apr-2005 : Use generators for legend labels, tooltips and URLs (DG);
 * 09-Jun-2005 : Use addItemEntity() method (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 25-May-2006 : Added check to drawItem() to detect when both the line and
 *               the shape are not visible (DG);
 * 20-Apr-2007 : Updated getLegendItem() for renderer change (DG);
 * 17-May-2007 : Set datasetIndex and seriesIndex in getLegendItem() (DG);
 * 18-May-2007 : Set dataset and seriesKey for LegendItem (DG);
 * 
 */

package org.jfree.chart.renderer.category;

import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;

import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.event.RendererChangeEvent;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;
import org.jfree.util.BooleanList;
import org.jfree.util.BooleanUtilities;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PublicCloneable;
import org.jfree.util.ShapeUtilities;

/**
 * A renderer that draws shapes for each data item, and lines between data 
 * items (for use with the {@link CategoryPlot} class).
 */
public class LineAndShapeRenderer extends AbstractCategoryItemRenderer 
                                  implements Cloneable, PublicCloneable, 
                                             Serializable {

    /** For serialization. */
    private static final long serialVersionUID = -197749519869226398L;
    
    /** A flag that controls whether or not lines are visible for ALL series. */
    private Boolean linesVisible;

    /** 
     * A table of flags that control (per series) whether or not lines are 
     * visible. 
     */
    private BooleanList seriesLinesVisible;

    /** 
     * A flag indicating whether or not lines are drawn between non-null 
     * points. 
     */
    private boolean baseLinesVisible;

    /** 
     * A flag that controls whether or not shapes are visible for ALL series. 
     */
    private Boolean shapesVisible;

    /** 
     * A table of flags that control (per series) whether or not shapes are 
     * visible. 
     */
    private BooleanList seriesShapesVisible;

    /** The default value returned by the getShapeVisible() method. */
    private boolean baseShapesVisible;

    /** A flag that controls whether or not shapes are filled for ALL series. */
    private Boolean shapesFilled;
    
    /** 
     * A table of flags that control (per series) whether or not shapes are 
     * filled. 
     */
    private BooleanList seriesShapesFilled;
    
    /** The default value returned by the getShapeFilled() method. */
    private boolean baseShapesFilled;
    
    /** 
     * A flag that controls whether the fill paint is used for filling 
     * shapes. 
     */
    private boolean useFillPaint;

    /** A flag that controls whether outlines are drawn for shapes. */
    private boolean drawOutlines;
        
    /** 
     * A flag that controls whether the outline paint is used for drawing shape 
     * outlines - if not, the regular series paint is used. 
     */
    private boolean useOutlinePaint;

    /**
     * Creates a renderer with both lines and shapes visible by default.
     */
    public LineAndShapeRenderer() {
        this(true, true);
    }

    /**
     * Creates a new renderer with lines and/or shapes visible.
     * 
     * @param lines  draw lines?
     * @param shapes  draw shapes?
     */
    public LineAndShapeRenderer(boolean lines, boolean shapes) {
        super();
        this.linesVisible = null;
        this.seriesLinesVisible = new BooleanList();
        this.baseLinesVisible = lines;
        this.shapesVisible = null;
        this.seriesShapesVisible = new BooleanList();
        this.baseShapesVisible = shapes;
        this.shapesFilled = null;
        this.seriesShapesFilled = new BooleanList();
        this.baseShapesFilled = true;
        this.useFillPaint = false;
        this.drawOutlines = true;
        this.useOutlinePaint = false;
    }
    
    // LINES VISIBLE

    /**
     * Returns the flag used to control whether or not the line for an item is 
     * visible.
     *
     * @param series  the series index (zero-based).
     * @param item  the item index (zero-based).
     *
     * @return A boolean.
     */
    public boolean getItemLineVisible(int series, int item) {
        Boolean flag = this.linesVisible;
        if (flag == null) {
            flag = getSeriesLinesVisible(series);
        }
        if (flag != null) {
            return flag.booleanValue();
        }
        else {
            return this.baseLinesVisible;   
        }
    }

    /**
     * Returns a flag that controls whether or not lines are drawn for ALL 
     * series.  If this flag is <code>null</code>, then the "per series" 
     * settings will apply.
     * 
     * @return A flag (possibly <code>null</code>).
     */
    public Boolean getLinesVisible() {
        return this.linesVisible;   
    }
    
    /**
     * Sets a flag that controls whether or not lines are drawn between the 
     * items in ALL series, and sends a {@link RendererChangeEvent} to all 
     * registered listeners.  You need to set this to <code>null</code> if you 
     * want the "per series" settings to apply.
     *
     * @param visible  the flag (<code>null</code> permitted).
     */
    public void setLinesVisible(Boolean visible) {
        this.linesVisible = visible;
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Sets a flag that controls whether or not lines are drawn between the 
     * items in ALL series, and sends a {@link RendererChangeEvent} to all 
     * registered listeners.
     *
     * @param visible  the flag.
     */
    public void setLinesVisible(boolean visible) {
        setLinesVisible(BooleanUtilities.valueOf(visible));
    }

    /**
     * Returns the flag used to control whether or not the lines for a series 
     * are visible.
     *
     * @param series  the series index (zero-based).
     *
     * @return The flag (possibly <code>null</code>).
     */
    public Boolean getSeriesLinesVisible(int series) {
        return this.seriesLinesVisible.getBoolean(series);
    }

    /**
     * Sets the 'lines visible' flag for a series.
     *
     * @param series  the series index (zero-based).
     * @param flag  the flag (<code>null</code> permitted).
     */
    public void setSeriesLinesVisible(int series, Boolean flag) {
        this.seriesLinesVisible.setBoolean(series, flag);
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Sets the 'lines visible' flag for a series.
     * 
     * @param series  the series index (zero-based).
     * @param visible  the flag.
     */
    public void setSeriesLinesVisible(int series, boolean visible) {
        setSeriesLinesVisible(series, BooleanUtilities.valueOf(visible));
    }
    
    /**
     * Returns the base 'lines visible' attribute.
     *
     * @return The base flag.
     */
    public boolean getBaseLinesVisible() {
        return this.baseLinesVisible;
    }

    /**
     * Sets the base 'lines visible' flag.
     *
     * @param flag  the flag.
     */
    public void setBaseLinesVisible(boolean flag) {
        this.baseLinesVisible = flag;
        notifyListeners(new RendererChangeEvent(this));
    }

    // SHAPES VISIBLE

    /**
     * Returns the flag used to control whether or not the shape for an item is 
     * visible.
     *
     * @param series  the series index (zero-based).
     * @param item  the item index (zero-based).
     *
     * @return A boolean.
     */
    public boolean getItemShapeVisible(int series, int item) {
        Boolean flag = this.shapesVisible;
        if (flag == null) {
            flag = getSeriesShapesVisible(series);
        }
        if (flag != null) {
            return flag.booleanValue();
        }
        else {
            return this.baseShapesVisible;   
        }
    }

    /**
     * Returns the flag that controls whether the shapes are visible for the 
     * items in ALL series.
     * 
     * @return The flag (possibly <code>null</code>).
     */
    public Boolean getShapesVisible() {
        return this.shapesVisible;    
    }
    
    /**
     * Sets the 'shapes visible' for ALL series and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     *
     * @param visible  the flag (<code>null</code> permitted).
     */
    public void setShapesVisible(Boolean visible) {
        this.shapesVisible = visible;
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Sets the 'shapes visible' for ALL series and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param visible  the flag.
     */
    public void setShapesVisible(boolean visible) {
        setShapesVisible(BooleanUtilities.valueOf(visible));
    }

    /**
     * Returns the flag used to control whether or not the shapes for a series
     * are visible.
     *
     * @param series  the series index (zero-based).
     *
     * @return A boolean.
     */
    public Boolean getSeriesShapesVisible(int series) {
        return this.seriesShapesVisible.getBoolean(series);
    }

    /**
     * Sets the 'shapes visible' flag for a series and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param series  the series index (zero-based).
     * @param visible  the flag.
     */
    public void setSeriesShapesVisible(int series, boolean visible) {
        setSeriesShapesVisible(series, BooleanUtilities.valueOf(visible));
    }
    
    /**
     * Sets the 'shapes visible' flag for a series and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     *
     * @param series  the series index (zero-based).
     * @param flag  the flag.
     */
    public void setSeriesShapesVisible(int series, Boolean flag) {
        this.seriesShapesVisible.setBoolean(series, flag);
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Returns the base 'shape visible' attribute.
     *
     * @return The base flag.
     */
    public boolean getBaseShapesVisible() {
        return this.baseShapesVisible;
    }

    /**
     * Sets the base 'shapes visible' flag.
     *
     * @param flag  the flag.
     */
    public void setBaseShapesVisible(boolean flag) {
        this.baseShapesVisible = flag;
        notifyListeners(new RendererChangeEvent(this));
    }

    /**
     * Returns <code>true</code> if outlines should be drawn for shapes, and 
     * <code>false</code> otherwise.
     * 
     * @return A boolean.
     */
    public boolean getDrawOutlines() {
        return this.drawOutlines;
    }