Package org.krysalis.jcharts.axisChart

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

/***********************************************************************************************
* 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.interfaces.IAxisChartDataSet;
import org.krysalis.jcharts.imageMap.RectMapArea;
import org.krysalis.jcharts.properties.*;
import org.krysalis.jcharts.axisChart.customRenderers.axisValue.AxisValueRenderEvent;

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


/*************************************************************************************
*
* @author Nathaniel Auvil
* @version $Id: ClusteredBarChart.java,v 1.2 2003/12/07 14:04:27 nathaniel_auvil Exp $
************************************************************************************/
abstract class ClusteredBarChart
{

  /********************************************************************************************
   * Draws the chart
   * uses Rectangle2D......keep having rounding problems.
   *
   * @param axisChart
   * @param iAxisChartDataSet
   *********************************************************************************************/
  static void render( AxisChart axisChart, IAxisChartDataSet iAxisChartDataSet )
  {
    Graphics2D g2d = axisChart.getGraphics2D();
    ClusteredBarChartProperties clusteredBarChartProperties = ( ClusteredBarChartProperties ) iAxisChartDataSet.getChartTypeProperties();


    float barGroupWidth;
    float barWidth;

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

    DataAxisProperties dataAxisProperties;
    if( axisChart.getAxisProperties().isPlotHorizontal() )
    {
      dataAxisProperties = ( DataAxisProperties ) axisChart.getAxisProperties().getXAxisProperties();

      barGroupWidth = axisChart.getYAxis().getScalePixelWidth() * clusteredBarChartProperties.getPercentage();
      barWidth = barGroupWidth / iAxisChartDataSet.getNumberOfDataSets();

      //---where the group of bars starts
      startingX = axisChart.getXAxis().getZeroLineCoordinate();
      startingY = axisChart.getYAxis().getLastTickY() - ( barGroupWidth / 2 );
      width = 0;
      height = barWidth;
      Rectangle2D.Float rectangle = new Rectangle2D.Float( startingX, startingY, width, height );

      horizontalPlot( axisChart,
                 iAxisChartDataSet,
                 clusteredBarChartProperties,
                 dataAxisProperties,
                 g2d,
                 rectangle,
                 startingX,
                 startingY,
                 barWidth );
    }
    else
    {
      dataAxisProperties = ( DataAxisProperties ) axisChart.getAxisProperties().getYAxisProperties();

      barGroupWidth = axisChart.getXAxis().getScalePixelWidth() * clusteredBarChartProperties.getPercentage();
      barWidth = barGroupWidth / iAxisChartDataSet.getNumberOfDataSets();

      //---where the group of bars starts
      startingX = axisChart.getXAxis().getTickStart() - ( barGroupWidth / 2 );
      startingY = axisChart.getYAxis().getZeroLineCoordinate();
      width = barWidth;
      height = 0;
      Rectangle2D.Float rectangle = new Rectangle2D.Float( startingX, startingY, width, height );

      verticalPlot( axisChart,
                iAxisChartDataSet,
                clusteredBarChartProperties,
                dataAxisProperties,
                g2d,
                rectangle,
                startingX,
                startingY,
                barWidth );
    }
  }


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

    //---setup the total area rectangle
    Rectangle2D.Float totalItemArea= new Rectangle2D.Float();
      totalItemArea.y = axisChart.getYAxis().getOrigin() - axisChart.getYAxis().getPixelLength() + 1;
    totalItemArea.height= axisChart.getYAxis().getScalePixelWidth() - 1;
    totalItemArea.x= axisChart.getXAxis().getOrigin() + 1;
    totalItemArea.width= axisChart.getXAxis().getPixelLength() - 1;


      //---reuse the same Object for pre and post render events.
    AxisValueRenderEvent axisValueRenderEvent= new AxisValueRenderEvent( axisChart,
                                                  iAxisChartDataSet,
                                                  g2d,
                                                  totalItemArea,
                                                  axisChart.getXAxis().getZeroLineCoordinate() );


    //LOOP
    for( int i = 0; i < iAxisChartDataSet.getNumberOfDataItems(); i++ )
    {
      for( int j = 0; j < iAxisChartDataSet.getNumberOfDataSets(); j++ )
      {
        g2d.setPaint( iAxisChartDataSet.getPaint( j ) );

        //---there is only ever one data set for a regular bar chart
        axisValueRenderEvent.setDataSetIndex( j );

        //---set values for the preRender event
        axisValueRenderEvent.setValueX( axisChart.getXAxis().getZeroLineCoordinate() );
        axisValueRenderEvent.setValueY( (float) rectangle.getCenterY() );
        axisValueRenderEvent.setValueIndex( i );

        //---we want to do this regardless if we render an item
        clusteredBarChartProperties.firePreRender( axisValueRenderEvent );


        //---if value == 0 do not plot anything.
        if( iAxisChartDataSet.getValue( j, i ) != 0.0d )
        {

          if( iAxisChartDataSet.getValue( j, i ) < 0 )
          {
            rectangle.x = axisChart.getXAxis().computeAxisCoordinate( axisChart.getXAxis().getOrigin(),
                                                   iAxisChartDataSet.getValue( j, i ),
                                                   axisChart.getXAxis().getScaleCalculator().getMinValue() );
            rectangle.width = startingX - rectangle.x;

            //---set values for the postRender event
            axisValueRenderEvent.setValueX( rectangle.x );
          }
          else
          {
            rectangle.x = startingX;
            rectangle.width = BarChart.computeScaleHeightOfValue( iAxisChartDataSet.getValue( j, i ),
                                                axisChart.getXAxis().getOneUnitPixelSize() );

            //---set values for the postRender event
            axisValueRenderEvent.setValueX( rectangle.x + rectangle.width );
          }



          //---with a user defined scale, we could have non-zero data points with a height of zero.
          if( rectangle.width != 0 )
          {
            g2d.fill( rectangle );

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


            //---if we are generating an ImageMap, store the image coordinates
            if( axisChart.getGenerateImageMapFlag() )
            {
              String label;
              if( axisChart.getYAxis().getAxisLabelsGroup() != null )
              {
                label= axisChart.getYAxis().getAxisLabelsGroup().getTextTag( imageMapLabelIndex ).getText();
              }
              else
              {
                label= null;
              }

              axisChart.getImageMap().addImageMapArea( new RectMapArea( rectangle,
                                                     iAxisChartDataSet.getValue( j, i ),
                                                     label,
                                                     iAxisChartDataSet.getLegendLabel( j ) ) );
            }
          }
        }

        //---notify everyone we just rendered
        clusteredBarChartProperties.firePostRender( axisValueRenderEvent );

        rectangle.y += barWidth;
      }

      imageMapLabelIndex--;

      startingY += axisChart.getYAxis().getScalePixelWidth();
      rectangle.y = startingY;

      totalItemArea.y+= axisChart.getYAxis().getScalePixelWidth();
    }
  }


  /**************************************************************************************
   *
   * @param axisChart
   * @param iAxisChartDataSet
   * @param barChartProperties
   * @param dataAxisProperties
   * @param g2d
   * @param rectangle
   * @param startingY
   **************************************************************************************/
  private static void verticalPlot( AxisChart axisChart,
                         IAxisChartDataSet iAxisChartDataSet,
                         BarChartProperties barChartProperties,
                         DataAxisProperties dataAxisProperties,
                         Graphics2D g2d,
                         Rectangle2D.Float rectangle,
                         float barGroupStartingX,
                         float startingY,
                         float barWidth )
  {

    //---setup the total area rectangle
    Rectangle2D.Float totalItemArea= new Rectangle2D.Float();
    totalItemArea.x= axisChart.getXAxis().getOrigin() + 1;
    totalItemArea.y = axisChart.getYAxis().getOrigin() - axisChart.getYAxis().getPixelLength() + 1;
    totalItemArea.width= axisChart.getXAxis().getScalePixelWidth() - 1;
    totalItemArea.height= axisChart.getYAxis().getPixelLength() - 1;


    //---reuse the same Object for pre and post render events.
    AxisValueRenderEvent axisValueRenderEvent= new AxisValueRenderEvent( axisChart,
                                                  iAxisChartDataSet,
                                                  g2d,
                                                  totalItemArea,
                                                  axisChart.getYAxis().getZeroLineCoordinate() );

    //LOOP
    for( int i = 0; i < iAxisChartDataSet.getNumberOfDataItems(); i++ )
    {
      for( int j = 0; j < iAxisChartDataSet.getNumberOfDataSets(); j++ )
      {
        g2d.setPaint( iAxisChartDataSet.getPaint( j ) );


        //---there is only ever one data set for a regular bar chart
        axisValueRenderEvent.setDataSetIndex( j );


        //---if value == 0 do not plot anything.
        if( iAxisChartDataSet.getValue( j, i ) != 0.0d )
        {
          //---set values for the preRender event
          axisValueRenderEvent.setValueX( (float) rectangle.getCenterX() );
          axisValueRenderEvent.setValueY( axisChart.getYAxis().getZeroLineCoordinate() );
          axisValueRenderEvent.setValueIndex( i );

          //---we want to do this regardless if we render an item
          barChartProperties.firePreRender( axisValueRenderEvent );


          if( iAxisChartDataSet.getValue( j, i ) < 0 )
          {
            rectangle.y = startingY;
            rectangle.height = BarChart.computeScaleHeightOfValue( iAxisChartDataSet.getValue( j, i ), axisChart.getYAxis().getOneUnitPixelSize() );

            //---set values for the postRender event
            axisValueRenderEvent.setValueY( rectangle.y + rectangle.height );
          }
          else
          {
            rectangle.y = axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
                                                   iAxisChartDataSet.getValue( j, i ),
                                                   axisChart.getYAxis().getScaleCalculator().getMinValue() );
            rectangle.height = startingY - rectangle.y;

            //---set values for the postRender event
            axisValueRenderEvent.setValueY( rectangle.y );
          }

          //---with a user defined scale, we could have non-zero data points with a height of zero.
          if( rectangle.height != 0 )
          {
            g2d.fill( rectangle );

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

            //---if we are generating an ImageMap, store the image coordinates
            if( axisChart.getGenerateImageMapFlag() )
            {
              String label;
              if( axisChart.getXAxis().getAxisLabelsGroup() != null )
              {
                label= axisChart.getXAxis().getAxisLabelsGroup().getTextTag( i ).getText();
              }
              else
              {
                label= null;
              }

              axisChart.getImageMap().addImageMapArea( new RectMapArea( rectangle,
                                                     iAxisChartDataSet.getValue( j, i ),
                                                     label,
                                                     iAxisChartDataSet.getLegendLabel( j ) ) );
            }
          }

          //---notify everyone we just rendered
          barChartProperties.firePostRender( axisValueRenderEvent );
        }

        rectangle.x += barWidth;
      }

      totalItemArea.x+= axisChart.getXAxis().getScalePixelWidth();

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

}
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