com.newatlanta.bluedragon.CustomBarRenderer.java Source code

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Here is the source code for com.newatlanta.bluedragon.CustomBarRenderer.java

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/* 
 *  Copyright (C) 2000 - 2008 TagServlet Ltd
 *
 *  This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
 *  
 *  OpenBD is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  Free Software Foundation,version 3.
 *  
 *  OpenBD 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 General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with OpenBD.  If not, see http://www.gnu.org/licenses/
 *  
 *  Additional permission under GNU GPL version 3 section 7
 *  
 *  If you modify this Program, or any covered work, by linking or combining 
 *  it with any of the JARS listed in the README.txt (or a modified version of 
 *  (that library), containing parts covered by the terms of that JAR, the 
 *  licensors of this Program grant you additional permission to convey the 
 *  resulting work. 
 *  README.txt @ http://www.openbluedragon.org/license/README.txt
 *  
 *  http://www.openbluedragon.org/
 */

package com.newatlanta.bluedragon;

import java.awt.BasicStroke;
import java.awt.GradientPaint;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.util.Vector;

import org.jfree.chart.LegendItem;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.data.category.CategoryDataset;

import com.naryx.tagfusion.cfm.tag.awt.cfCHART;

public class CustomBarRenderer extends BarRenderer implements CustomColorRenderer {
    private static final long serialVersionUID = 1L;

    /** The colors. */
    private Vector colors = new Vector();

    /**
     * Creates a new renderer.
     * 
     * @param colors
     *          the colors.
     */
    public CustomBarRenderer(Paint[] colors) {
        this.colors.addElement(colors);
    }

    public void addColors(Paint[] colors) {
        this.colors.addElement(colors);
    }

    /**
     * Returns the paint for an item. Overrides the default behaviour inherited
     * from AbstractSeriesRenderer.
     * 
     * @param row
     *          the series.
     * @param column
     *          the category.
     * 
     * @return The item color.
     */
    public Paint getItemPaint(int row, int column) {
        if (row >= this.colors.size())
            return super.getItemPaint(row, column);

        Paint[] seriesColors = (Paint[]) this.colors.elementAt(row);
        if (seriesColors.length == 0)
            return super.getItemPaint(row, column);

        return seriesColors[column % seriesColors.length];
    }

    /**
     * Returns a legend item for a series.
     * 
     * @param datasetIndex
     *          the dataset index (zero-based).
     * @param series
     *          the series index (zero-based).
     * 
     * @return The legend item.
     */
    public LegendItem getLegendItem(int datasetIndex, int series) {

        CategoryPlot cp = getPlot();
        if (cp == null) {
            return null;
        }

        CategoryDataset dataset;
        dataset = cp.getDataset(datasetIndex);
        String label = getLegendItemLabelGenerator().generateLabel(dataset, series);
        String description = label;
        String toolTipText = null;
        if (getLegendItemToolTipGenerator() != null) {
            toolTipText = getLegendItemToolTipGenerator().generateLabel(dataset, series);
        }
        String urlText = null;
        if (getLegendItemURLGenerator() != null) {
            urlText = getLegendItemURLGenerator().generateLabel(dataset, series);
        }
        Shape shape = new Rectangle2D.Double(-4.0, -4.0, 8.0, 8.0);
        Paint paint = getSeriesPaint(series);
        Paint outlinePaint = getSeriesOutlinePaint(series);
        Stroke outlineStroke = getSeriesOutlineStroke(series);

        // This is the fix for bug #2695
        if (paint instanceof java.awt.GradientPaint) {
            // When the paintstyle is "shade" use the lighter
            // color while with "light" use the darker color
            // NOTE: if we take the lighter color (Color2) and make it darker
            // and it equals the darker color (Color1) then the paintstyle
            // is "shade".
            GradientPaint gp = ((GradientPaint) paint);
            if (cfCHART.getDarkerColor(gp.getColor2()).equals(gp.getColor1()))
                paint = gp.getColor2(); // the lighter color
            else
                paint = gp.getColor1(); // the darker color
        }

        return new LegendItem(label, description, toolTipText, urlText, true, shape, true, paint,
                isDrawBarOutline(), outlinePaint, outlineStroke, false, new Line2D.Float(), new BasicStroke(1.0f),
                Color.black);
    }
}