extendedstackedbarrenderer.java

很好的制作统计图表的代码

// Decompiled by DJ v3.7.7.81 Copyright 2004 Atanas Neshkov  Date: 7/18/2005 5:13:45 PM
// Home Page : http://members.fortunecity.com/neshkov/dj.html  - Check often for new version!
// Decompiler options: packimports(3) 

package org.jfree.chart.demo;

import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.text.NumberFormat;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.CategoryItemEntity;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.labels.CategoryToolTipGenerator;
import org.jfree.chart.plot.*;
import org.jfree.chart.renderer.category.CategoryItemRendererState;
import org.jfree.chart.renderer.category.StackedBarRenderer;
import org.jfree.chart.urls.CategoryURLGenerator;
import org.jfree.data.category.CategoryDataset;
import org.jfree.text.TextUtilities;
import org.jfree.ui.TextAnchor;

public class ExtendedStackedBarRenderer extends StackedBarRenderer
{

    public ExtendedStackedBarRenderer()
    {
        showPositiveTotal = true;
        showNegativeTotal = true;
        totalLabelFont = new Font("SansSerif", 0, 10);
        totalFormatter = NumberFormat.getInstance();
    }

    public NumberFormat getTotalFormatter()
    {
        return totalFormatter;
    }

    public void setTotalFormatter(NumberFormat numberformat)
    {
        if(numberformat == null)
        {
            throw new IllegalArgumentException("Null format not permitted.");
        } else
        {
            totalFormatter = numberformat;
            return;
        }
    }

    public void drawItem(Graphics2D graphics2d, CategoryItemRendererState categoryitemrendererstate, Rectangle2D rectangle2d, CategoryPlot categoryplot, CategoryAxis categoryaxis, ValueAxis valueaxis, CategoryDataset categorydataset, 
            int i, int j, int k)
    {
        Number number = categorydataset.getValue(i, j);
        if(number == null)
            return;
        double d = number.doubleValue();
        PlotOrientation plotorientation = categoryplot.getOrientation();
        double d1 = categoryaxis.getCategoryMiddle(j, getColumnCount(), rectangle2d, categoryplot.getDomainAxisEdge()) - categoryitemrendererstate.getBarWidth() / 2D;
        double d2 = 0.0D;
        double d3 = 0.0D;
        for(int l = 0; l < i; l++)
        {
            Number number1 = categorydataset.getValue(l, j);
            if(number1 == null)
                continue;
            double d5 = number1.doubleValue();
            if(d5 > 0.0D)
                d2 += d5;
            else
                d3 += d5;
        }

        org.jfree.ui.RectangleEdge rectangleedge = categoryplot.getRangeAxisEdge();
        double d4;
        double d6;
        if(d > 0.0D)
        {
            d4 = valueaxis.valueToJava2D(d2, rectangle2d, rectangleedge);
            d6 = valueaxis.valueToJava2D(d2 + d, rectangle2d, rectangleedge);
        } else
        {
            d4 = valueaxis.valueToJava2D(d3, rectangle2d, rectangleedge);
            d6 = valueaxis.valueToJava2D(d3 + d, rectangle2d, rectangleedge);
        }
        double d7 = Math.min(d4, d6);
        double d8 = Math.max(Math.abs(d6 - d4), getMinimumBarLength());
        java.awt.geom.Rectangle2D.Double double1 = null;
        if(plotorientation == PlotOrientation.HORIZONTAL)
            double1 = new java.awt.geom.Rectangle2D.Double(d7, d1, d8, categoryitemrendererstate.getBarWidth());
        else
            double1 = new java.awt.geom.Rectangle2D.Double(d1, d7, categoryitemrendererstate.getBarWidth(), d8);
        java.awt.Paint paint = getItemPaint(i, j);
        graphics2d.setPaint(paint);
        graphics2d.fill(double1);
        if(isDrawBarOutline() && categoryitemrendererstate.getBarWidth() > 3D)
        {
            graphics2d.setStroke(getItemStroke(i, j));
            graphics2d.setPaint(getItemOutlinePaint(i, j));
            graphics2d.draw(double1);
        }
        org.jfree.chart.labels.CategoryItemLabelGenerator categoryitemlabelgenerator = getItemLabelGenerator(i, j);
        if(categoryitemlabelgenerator != null && isItemLabelVisible(i, j))
            drawItemLabel(graphics2d, categorydataset, i, j, categoryplot, categoryitemlabelgenerator, double1, d < 0.0D);
        if(d > 0.0D)
        {
            if(showPositiveTotal && isLastPositiveItem(categorydataset, i, j))
            {
                graphics2d.setPaint(Color.black);
                graphics2d.setFont(totalLabelFont);
                double d9 = calculateSumOfPositiveValuesForCategory(categorydataset, j);
                TextUtilities.drawRotatedString(totalFormatter.format(d9), graphics2d, (float)double1.getCenterX(), (float)(double1.getMinY() - 4D), TextAnchor.BOTTOM_CENTER, 0.0D, TextAnchor.BOTTOM_CENTER);
            }
        } else
        if(showNegativeTotal && isLastNegativeItem(categorydataset, i, j))
        {
            graphics2d.setPaint(Color.black);
            graphics2d.setFont(totalLabelFont);
            double d10 = calculateSumOfNegativeValuesForCategory(categorydataset, j);
            TextUtilities.drawRotatedString(String.valueOf(d10), graphics2d, (float)double1.getCenterX(), (float)(double1.getMaxY() + 4D), TextAnchor.TOP_CENTER, 0.0D, TextAnchor.TOP_CENTER);
        }
        if(categoryitemrendererstate.getInfo() != null)
        {
            EntityCollection entitycollection = categoryitemrendererstate.getInfo().getOwner().getEntityCollection();
            if(entitycollection != null)
            {
                String s = null;
                CategoryToolTipGenerator categorytooltipgenerator = getToolTipGenerator(i, j);
                if(categorytooltipgenerator != null)
                    s = categorytooltipgenerator.generateToolTip(categorydataset, i, j);
                String s1 = null;
                if(getItemURLGenerator(i, j) != null)
                    s1 = getItemURLGenerator(i, j).generateURL(categorydataset, i, j);
                CategoryItemEntity categoryitementity = new CategoryItemEntity(double1, s, s1, categorydataset, i, categorydataset.getColumnKey(j), j);
                entitycollection.add(categoryitementity);
            }
        }
    }

    private boolean isLastPositiveItem(CategoryDataset categorydataset, int i, int j)
    {
        boolean flag = true;
        Number number = categorydataset.getValue(i, j);
        if(number == null)
            return false;
        for(int k = i + 1; k < categorydataset.getRowCount(); k++)
        {
            Number number1 = categorydataset.getValue(k, j);
            if(number1 != null)
                flag = flag && number1.doubleValue() <= 0.0D;
        }

        return flag;
    }

    private boolean isLastNegativeItem(CategoryDataset categorydataset, int i, int j)
    {
        boolean flag = true;
        Number number = categorydataset.getValue(i, j);
        if(number == null)
            return false;
        for(int k = i + 1; k < categorydataset.getRowCount(); k++)
        {
            Number number1 = categorydataset.getValue(k, j);
            if(number1 != null)
                flag = flag && number1.doubleValue() >= 0.0D;
        }

        return flag;
    }

    private double calculateSumOfPositiveValuesForCategory(CategoryDataset categorydataset, int i)
    {
        double d = 0.0D;
        for(int j = 0; j < categorydataset.getRowCount(); j++)
        {
            Number number = categorydataset.getValue(j, i);
            if(number == null)
                continue;
            double d1 = number.doubleValue();
            if(d1 > 0.0D)
                d += d1;
        }

        return d;
    }

    private double calculateSumOfNegativeValuesForCategory(CategoryDataset categorydataset, int i)
    {
        double d = 0.0D;
        for(int j = 0; j < categorydataset.getRowCount(); j++)
        {
            Number number = categorydataset.getValue(j, i);
            if(number == null)
                continue;
            double d1 = number.doubleValue();
            if(d1 < 0.0D)
                d += d1;
        }

        return d;
    }

    private boolean showPositiveTotal;
    private boolean showNegativeTotal;
    private Font totalLabelFont;
    private NumberFormat totalFormatter;
}