Package org.krysalis.jcharts.axisChart

Source Code of org.krysalis.jcharts.axisChart.StackedBarChart

/***********************************************************************************************
* Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation ("Software"), with or
* without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and notices.
*   Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
*   conditions and the following disclaimer in the documentation and/or other materials
*   provided with the distribution.
*
* 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
*   products derived from this Software without prior written permission of Nathaniel G.
*   Auvil.  For written permission, please contact nathaniel_auvil@users.sourceforge.net
*
* 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
*   in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
*   registered trademark of Nathaniel G. Auvil.
*
* 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
*
* THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
* jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
************************************************************************************************/


package org.krysalis.jcharts.axisChart;


import org.krysalis.jcharts.chartData.ChartDataException;
import org.krysalis.jcharts.chartData.interfaces.IAxisChartDataSet;
import org.krysalis.jcharts.imageMap.RectMapArea;
import org.krysalis.jcharts.properties.DataAxisProperties;
import org.krysalis.jcharts.properties.StackedBarChartProperties;

import java.awt.*;
import java.awt.geom.Rectangle2D;


/*************************************************************************************
*
* @author Nathaniel Auvil
* @version $Id: StackedBarChart.java,v 1.1 2003/05/17 16:56:57 nathaniel_auvil Exp $
************************************************************************************/
abstract class StackedBarChart
{

  /********************************************************************************************
   * Draws the chart
   *
   * @param axisChart
   *********************************************************************************************/
  static void render( AxisChart axisChart, IAxisChartDataSet iAxisChartDataSet ) throws ChartDataException
  {
    Graphics2D g2d = axisChart.getGraphics2D();
    StackedBarChartProperties stackedBarChartProperties = (StackedBarChartProperties) iAxisChartDataSet.getChartTypeProperties();


    float barWidth;

    //---y axis position on screen to start drawing.
    float startingX;
    float startingY;
    float width;
    float height;


    DataAxisProperties dataAxisProperties;


    if( axisChart.getAxisProperties().isPlotHorizontal() )
    {
      dataAxisProperties = (DataAxisProperties) axisChart.getAxisProperties().getXAxisProperties();
      barWidth = axisChart.getYAxis().getScalePixelWidth() * stackedBarChartProperties.getPercentage();

      startingX = axisChart.getXAxis().getZeroLineCoordinate();
      startingY = axisChart.getYAxis().getLastTickY() - (barWidth / 2);
      width = 0;
      height = barWidth;
      Rectangle2D.Float rectangle = new Rectangle2D.Float( startingX, startingY, width, height );

      StackedBarChart.horizontalPlot( axisChart, iAxisChartDataSet, stackedBarChartProperties, dataAxisProperties, g2d, rectangle, startingX );
    }
    else
    {
      dataAxisProperties = (DataAxisProperties) axisChart.getAxisProperties().getYAxisProperties();
      barWidth = axisChart.getXAxis().getScalePixelWidth() * stackedBarChartProperties.getPercentage();

      startingX = axisChart.getXAxis().getTickStart() - (barWidth / 2);
      startingY = axisChart.getYAxis().getZeroLineCoordinate();
      width = barWidth;
      height = 0;
      Rectangle2D.Float rectangle = new Rectangle2D.Float( startingX, startingY, width, height );

      StackedBarChart.verticalPlot( axisChart, iAxisChartDataSet, stackedBarChartProperties, dataAxisProperties, g2d, rectangle, startingY );
    }
  }


  /**************************************************************************************
   *
   * @param axisChart
   * @param iAxisChartDataSet
   * @param stackedBarChartProperties
   * @param dataAxisProperties
   * @param g2d
   * @param rectangle
   * @param startingX
   **************************************************************************************/
  private static void horizontalPlot( AxisChart axisChart,
                          IAxisChartDataSet iAxisChartDataSet,
                          StackedBarChartProperties stackedBarChartProperties,
                          DataAxisProperties dataAxisProperties,
                          Graphics2D g2d,
                          Rectangle2D.Float rectangle,
                          float startingX ) throws ChartDataException
  {
    int imageMapLabelIndex = axisChart.getYAxis().getNumberOfScaleItems() - 1;

    //LOOP
    //---initial postion of each line.
    for( int i = 0; i < iAxisChartDataSet.getNumberOfDataItems(); i++ )
    {
      //---draw each bar in stack
      for( int j = 0; j < iAxisChartDataSet.getNumberOfDataSets(); j++ )
      {
        //---if segment has a zero value, draw nothing.
        if( iAxisChartDataSet.getValue( j, i ) == 0 )
        {
          continue;
        }
        else if( iAxisChartDataSet.getValue( j, i ) < 0 )
        {
//todo i think we could support this, but it can wait
          throw new ChartDataException( "Negative values in Stacked Bar charts are not supported yet... Coming soon..." );
/*
          rectangle.x = axisChart.getXAxis().computeAxisCoordinate( axisChart.getXAxis().getOrigin(),
                                                 iAxisChartDataSet.getValue( 0, i ),
                                                 dataAxisProperties.getScaleCalculator().getMinValue() );
          rectangle.width = startingX - rectangle.x;
*/
        }
        else
        {

          rectangle.width = BarChart.computeScaleHeightOfValue( iAxisChartDataSet.getValue( j, i ), axisChart.getXAxis().getOneUnitPixelSize() );


          //rectangle.x = startingX;
          //rectangle.width = BarChart.computeScaleHeightOfValue( iAxisChartDataSet.getValue( j, i ), axisChart.getXAxis().getOneUnitPixelSize() );
        }


        g2d.setPaint( iAxisChartDataSet.getPaint( j ) );
        g2d.fill( rectangle );

        if( stackedBarChartProperties.getShowOutlinesFlag() )
        {
          stackedBarChartProperties.getBarOutlineStroke().draw( g2d, rectangle );
        }


        //---if we are generating an ImageMap, store the image coordinates
        if( axisChart.getGenerateImageMapFlag() )
        {
          String label = null;
          if( axisChart.getYAxis().getAxisLabelsGroup() != null )
          {
            label = axisChart.getYAxis().getAxisLabelsGroup().getTextTag( imageMapLabelIndex ).getText();
          }
          axisChart.getImageMap().addImageMapArea( new RectMapArea( rectangle,
                                                 iAxisChartDataSet.getValue( j, i ),
                                                 label,
                                                 iAxisChartDataSet.getLegendLabel( j ) ) );
        }

        rectangle.x += rectangle.width;
      }

      imageMapLabelIndex--;

      rectangle.y += axisChart.getYAxis().getScalePixelWidth();
      rectangle.x = startingX;
    }
  }


  /**************************************************************************************
   *
   * @param axisChart
   * @param iAxisChartDataSet
   * @param stackedBarChartProperties
   * @param dataAxisProperties
   * @param g2d
   * @param rectangle
   * @param startingY
   **************************************************************************************/
  private static void verticalPlot( AxisChart axisChart,
                         IAxisChartDataSet iAxisChartDataSet,
                         StackedBarChartProperties stackedBarChartProperties,
                         DataAxisProperties dataAxisProperties,
                         Graphics2D g2d,
                         Rectangle2D.Float rectangle,
                         float startingY )
  {
    //IDataSeries iDataSeries= (IDataSeries) axisChart.getIAxisDataSeries();

    //LOOP
    //---initial postion of each line.
    for( int i = 0; i < iAxisChartDataSet.getNumberOfDataItems(); i++ )
    {
      //---draw each bar in stack
      for( int j = 0; j < iAxisChartDataSet.getNumberOfDataSets(); j++ )
      {
        //---if segment has a zero value, draw nothing.
        if( iAxisChartDataSet.getValue( j, i ) == 0 )
        {
          continue;
        }

        rectangle.height = BarChart.computeScaleHeightOfValue( iAxisChartDataSet.getValue( j, i ), axisChart.getYAxis().getOneUnitPixelSize() );
        rectangle.y -= rectangle.height;


        g2d.setPaint( iAxisChartDataSet.getPaint( j ) );
        g2d.fill( rectangle );

        if( stackedBarChartProperties.getShowOutlinesFlag() )
        {
          stackedBarChartProperties.getBarOutlineStroke().draw( g2d, rectangle );
        }


        //---if we are generating an ImageMap, store the image coordinates
        if( axisChart.getGenerateImageMapFlag() )
        {
          String label = null;
          if( axisChart.getXAxis().getAxisLabelsGroup() != null )
          {
            label = axisChart.getXAxis().getAxisLabelsGroup().getTextTag( i ).getText();
          }
          axisChart.getImageMap().addImageMapArea( new RectMapArea( rectangle,
                                                 iAxisChartDataSet.getValue( j, i ),
                                                 label,
                                                 iAxisChartDataSet.getLegendLabel( j ) ) );
        }

      }

      rectangle.x += axisChart.getXAxis().getScalePixelWidth();
      rectangle.y = startingY;
    }
  }

}
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