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Viewing changes to local/in/dhis-web-ga/WEB-INF/src/org/hisp/gtool/charts/BarChart1.java

  • Committer: larshelge at gmail
  • Date: 2009-03-03 16:46:36 UTC
  • Revision ID: larshelge@gmail.com-20090303164636-2sjlrquo7ib1gf7r
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local/in/dhis-web-ga/WEB-INF/src/org/hisp/gtool/charts/BarChart1.java
 
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package org.hisp.gtool.charts;
 
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import java.awt.Font;
 
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import java.awt.image.BufferedImage;
 
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import java.io.PrintWriter;
 
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import javax.servlet.http.HttpServletRequest;
 
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import javax.servlet.http.HttpServletResponse;
 
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import javax.servlet.http.HttpSession;
 
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import org.jfree.chart.ChartFactory;
 
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import org.jfree.chart.ChartRenderingInfo;
 
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import org.jfree.chart.ChartUtilities;
 
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import org.jfree.chart.JFreeChart;
 
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import org.jfree.chart.axis.CategoryAxis;
 
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import org.jfree.chart.axis.CategoryLabelPositions;
 
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import org.jfree.chart.axis.NumberAxis;
 
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import org.jfree.chart.entity.StandardEntityCollection;
 
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import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
 
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import org.jfree.chart.plot.CategoryPlot;
 
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import org.jfree.chart.plot.PlotOrientation;
 
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import org.jfree.chart.renderer.category.CategoryItemRenderer;
 
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import org.jfree.chart.title.TextTitle;
 
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import org.jfree.data.category.DefaultCategoryDataset;
 
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import org.jfree.ui.RectangleEdge;
 
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import org.jfree.ui.VerticalAlignment;
 
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public class BarChart1 
 
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{
 
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//      Row Keys
 
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        String[] series;
 
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        // Column Keys
 
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        String[] categories;
 
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        // data...      
 
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        double[][] data;
 
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        String chartTitle;
 
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        String xAxis_Title;
 
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        String yAxis_Title;
 
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        public String getXAxis_Title() {
 
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                return xAxis_Title;
 
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        }
 
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        public void setXAxis_Title(String axis_Title) {
 
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                xAxis_Title = axis_Title;
 
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        }
 
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        public String getYAxis_Title() {
 
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                return yAxis_Title;
 
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        }
 
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        public void setYAxis_Title(String axis_Title) {
 
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                yAxis_Title = axis_Title;
 
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        }
 
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        public String getChartTitle() {
 
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                return chartTitle;
 
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        }
 
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        public void setChartTitle(String chartTitle) {
 
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                this.chartTitle = chartTitle;
 
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        }
 
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        //      constructor
 
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        public BarChart1() { }
 
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        private DefaultCategoryDataset  getDataset() 
 
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        {    
 
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                //      create the dataset...
 
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                DefaultCategoryDataset dataset = new DefaultCategoryDataset();
 
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                for(int i=0;i<series.length;i++)
 
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                {
 
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                        for(int j=0;j<categories.length;j++)
 
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                        {
 
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                                dataset.addValue(data[i][j], series[i], categories[j]);
 
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                        }                                       
 
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                }                               
 
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                return dataset;
 
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        }
 
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 public String getChartViewer(HttpServletRequest request, HttpServletResponse response) {
 
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         DefaultCategoryDataset dataset = getDataset();
 
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     // create the chart...
 
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     final JFreeChart chart = ChartFactory.createBarChart(
 
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         "",       // chart title
 
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         "Category",               // domain axis label
 
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         "Value",                  // range axis label
 
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         dataset,                  // data
 
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         PlotOrientation.VERTICAL, // orientation
 
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         true,                    // include legend
 
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         true,                     // tooltips?
 
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         false                     // URLs?
 
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     );
 
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     // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
 
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     // set the background color for the chart...
 
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     //chart.setBackgroundPaint(Color.lightGray);
 
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     /* TITLE */
 
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     final TextTitle mainTitle = new TextTitle("BarChart");
 
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     mainTitle.setFont(new Font("times", Font.BOLD, 13));
 
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     mainTitle.setPosition(RectangleEdge.TOP);     
 
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     mainTitle.setVerticalAlignment(VerticalAlignment.BOTTOM);
 
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     chart.addSubtitle(mainTitle);
 
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     /* SUB TITLE */     
 
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     final TextTitle subtitle = new TextTitle(chartTitle);
 
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     subtitle.setFont(new Font("times", Font.BOLD, 13));
 
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     subtitle.setPosition(RectangleEdge.TOP);     
 
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     subtitle.setVerticalAlignment(VerticalAlignment.BOTTOM);
 
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     chart.addSubtitle(subtitle);
 
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     // get a reference to the plot for further customisation...
 
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     final CategoryPlot plot = chart.getCategoryPlot();
 
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    // plot.setBackgroundPaint(Color.white);
 
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    // plot.setDomainGridlinePaint(Color.lightGray);
 
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    // plot.setRangeGridlinePaint(Color.lightGray);
 
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     // set the range axis to display integers only...
 
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     final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
 
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     rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
 
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     rangeAxis.setUpperMargin(0.15);
 
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     rangeAxis.setLowerMargin(0.15);
 
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     rangeAxis.setLabel(yAxis_Title);
 
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     // disable bar outlines...
 
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     final CategoryItemRenderer renderer = plot.getRenderer();
 
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     renderer.setItemLabelGenerator(new StandardCategoryItemLabelGenerator());
 
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     renderer.setItemLabelsVisible(true); 
 
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     final CategoryAxis domainAxis = plot.getDomainAxis();
 
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     domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
 
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     domainAxis.setLabel(xAxis_Title);  
 
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     // OPTIONAL CUSTOMISATION COMPLETED.
 
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   ChartRenderingInfo info = null;
 
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   HttpSession session = request.getSession();
 
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   try {
 
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     //Create RenderingInfo object
 
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     response.setContentType("text/html");
 
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     info = new ChartRenderingInfo(new StandardEntityCollection());
 
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     BufferedImage chartImage = chart.createBufferedImage(800, 500, info);
 
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     // putting chart as BufferedImage in session, 
 
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     // thus making it available for the image reading action Action.
 
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     session.setAttribute("chartImage", chartImage);
 
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     PrintWriter writer = new PrintWriter(response.getWriter());
 
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     ChartUtilities.writeImageMap(writer,"imageMap",info,true);
 
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     writer.flush();
 
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   }
 
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   catch (Exception e) {
 
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      // handel your exception here
 
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   }
 
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   String pathInfo = "http://";
 
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   pathInfo += request.getServerName();
 
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   int port = request.getServerPort();
 
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   pathInfo += ":"+String.valueOf(port);
 
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   pathInfo += request.getContextPath();
 
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   String chartViewer = pathInfo + "/servlet/ChartViewer";
 
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   return chartViewer;
 
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 }
 
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public String[] getCategories() {
 
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        return categories;
 
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}
 
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public void setCategories(String[] categories) {
 
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        this.categories = categories;
 
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}
 
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public double[][] getData() {
 
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        return data;
 
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}
 
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public void setData(double[][] data) {
 
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        this.data = data;
 
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}
 
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public String[] getSeries() {
 
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        return series;
 
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}
 
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public void setSeries(String[] series) {
 
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        this.series = series;
 
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}
 
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}