package samples.chart;

import samples.rdc.RDCSample;

import com.inet.report.Chart2;
import com.inet.report.DatabaseField;
import com.inet.report.Engine;
import com.inet.report.Field;
import com.inet.report.RDC;
import com.inet.report.ReportException;
import com.inet.report.Section;
import com.inet.report.SummaryField;
import com.inet.report.TableSource;
import com.inet.report.chart.ChartTitle;
import com.inet.report.chart.dataset.ForEachRecordDataset;
import com.inet.report.chart.format.FixedNumberFormat;
import com.inet.report.chart.plot.PieLegendLayout;
import com.inet.report.chart.plot.PiePlot;
import com.inet.report.chart.plot.PieStyle;

/**
 * This sample demonstrates how you can create a pie chart and use this properties.
 */
public class PieSample extends RDCSample {
    
    /**
     * The value column name.
     */
    private static String value = "Value";
    
    /**
     * Creates an empty engine, adds a chart and sets the data.
     * @param exportFmt the export format set by super class.
     * @return returns the created engine.
     */
    public Engine createAndFillEngine (String exportFmt) {
        try {
            //Creates a new empty engine.
            Engine engine = RDC.createEmptyEngine(exportFmt);
            //Creates a database column used by chart.
            TableSource tableSource = engine.getDatabaseTables().getDatasource(0).createTableSource("sample");
            tableSource.addColumn(value, Field.NUMBER);

            //Gets the first section of report header.
            Section section = engine.getArea(Engine.REPORT_HEADER).getSection(0);
            
            //Creates a new pie chart in the section.
            Chart2 pieChart = section.addChart2(PieStyle.PIE3D, 0, 0, 10000, 10000);           
            
            //Creates a data source of chart.
            PiePlot plot = (PiePlot)pieChart.getPlot();
            //This chart should shows each data record as a item.
            ForEachRecordDataset dataset = new ForEachRecordDataset(pieChart);
            //Adds the value field. The summary operation is irrelevant by this kind of dataset.
            DatabaseField valueField = tableSource.getDatabaseField(value);
            dataset.addDataField(SummaryField.NO_SUMMARY_OPERATION, valueField, null, 0);            
            plot.setDataset(dataset);
            
            //Gets the header title of chart.
            ChartTitle headerTitle = pieChart.getHeaderTitle();
            //Sets the empty label instead of automatic generated label.
            headerTitle.setShowAutoTitle(false);
            headerTitle.setTitle("");
            
            //Sets the start rotation angle of pie.
            plot.setRotationAngle(45.0);
            //Sets show label and value of each pie item.
            plot.setShowLabel(true);
            plot.setShowValue(true);
            //Expands the pie section number 0.
            plot.setSectionIndexes(new int[]{0});
            //Sets the expanded gap.
            plot.setExpandPercent(0.2);
            
            //Sets the item label background color.
            plot.setItemLabelBackColor(RDC.COLOR_SILVER);
            //Sets the item label color.
            plot.setItemLabelColor(RDC.COLOR_BLACK);
            //Sets the item label gap between label and pie.
            plot.setItemLabelGap(0.01);
            //Sets the item label outline color.
            plot.setItemLabelOutlineColor(RDC.COLOR_GRAY);
            
            //Sets the percent number format.
            FixedNumberFormat format = new FixedNumberFormat(FixedNumberFormat.FORMAT_PERCENT);
            format.setNumberOfDecimalPlaces(0);
            plot.setItemLabelFormat(format);
            
            //Sets the pie transparency.
            plot.setForegroundAlpha(0.5f);
            //Sets the pie outline color.
            plot.setOutlineColor(RDC.COLOR_BLACK);
            //Sets the pie outline width.
            plot.setOutlineWidth(20);
            
            //Sets the legend shows record number and percent value.
            plot.setLegendLayout(PieLegendLayout.SHOW_LABEL_AND_PERCENTAGE);
            
            //Sets the report data. 
            setData(engine);
            return engine;
        } catch (Throwable e) {
            e.printStackTrace();
            System.exit(0);
            return null;
        }
    }
    
    /**
     * Sets the report data. This sets the data column used by chart.
     * @param engine the current engine
     * @throws ReportException if engine is not initialized or finished.
     */
    private static void setData(Engine engine) throws ReportException {       
        String[] columns = {value};
        Object[][] data = new Object[4][];
        
        data[0] = new Object[1];
        data[0][0] = Integer.valueOf(1);
        
        data[1] = new Object[1];
        data[1][0] = Integer.valueOf(2);
        
        data[2] = new Object[1];
        data[2][0] = Integer.valueOf(5);
        
        data[3] = new Object[1];
        data[3][0] = Integer.valueOf(4);
        
        engine.setData(columns, data);
    }
    
    /**
     * Starts this sample.
     * @param argv nothing
     */
    public static void main( String[] argv ) {
        new PieSample().initUI();
    }
}