Package org.krysalis.jcharts.axisChart

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

/***********************************************************************************************
* 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.IStockChartDataSet;
import org.krysalis.jcharts.chartData.interfaces.IDataSeries;
import org.krysalis.jcharts.imageMap.CircleMapArea;
import org.krysalis.jcharts.properties.StockChartProperties;
import org.krysalis.jcharts.properties.DataAxisProperties;
import org.krysalis.jcharts.types.StockChartDataType;

import java.awt.*;
import java.awt.geom.Line2D;


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

  /********************************************************************************************
   * Draws the chart
   *
   * @param axisChart
   * @param iStockChartDataSet
   *********************************************************************************************/
  static final void render( AxisChart axisChart, IStockChartDataSet iStockChartDataSet )
  {
    StockChartProperties stockChartProperties=(StockChartProperties) iStockChartDataSet.getChartTypeProperties();
    Graphics2D g2d=axisChart.getGraphics2D();

    DataAxisProperties dataAxisProperties= (DataAxisProperties) axisChart.getAxisProperties().getYAxisProperties();
      IDataSeries iDataSeries= (IDataSeries) axisChart.getIAxisDataSeries();


    //---cache the computed values
    //float[][] yAxisCoordinates=new float[ iStockChartDataSet.getNumberOfDataSets() ][ iStockChartDataSet.getNumberOfDataItems() ];


    //---init for first segment
    Line2D.Float line=new Line2D.Float( axisChart.getXAxis().getTickStart(),
                            0,
                            axisChart.getXAxis().getTickStart(),
                            0 );


    Line2D.Float openLine=null;
    if( iStockChartDataSet.hasOpenValues() )
    {
      openLine=new Line2D.Float( axisChart.getXAxis().getTickStart() - stockChartProperties.getOpenPixelLength() - 1,
                        0,
                        axisChart.getXAxis().getTickStart() - 1,
                        0 );
    }


    Line2D.Float closeLine=null;
    if( iStockChartDataSet.hasCloseValues() )
    {
      closeLine=new Line2D.Float( axisChart.getXAxis().getTickStart() + 1,
                         0,
                         axisChart.getXAxis().getTickStart() + stockChartProperties.getClosePixelLength() + 1,
                         0 );
    }


    //LOOP
    //---draw each line to the image
    for( int i=0; i < iStockChartDataSet.getNumberOfDataItems(); i++ )
    {
      line.y1= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
                                          iStockChartDataSet.getLowValue( i ),
                                          axisChart.getYAxis().getScaleCalculator().getMinValue() );
      line.y2= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
                                          iStockChartDataSet.getHighValue( i ),
                                          axisChart.getYAxis().getScaleCalculator().getMinValue() );

      String label;
      if( axisChart.getXAxis().getAxisLabelsGroup() != null )
      {
        label = axisChart.getXAxis().getAxisLabelsGroup().getTextTag( i ).getText();
      }
      else
      {
        label = null;
      }

      //---if we are generating an ImageMap, store the image coordinates
      if( axisChart.getGenerateImageMapFlag() )
      {
        axisChart.getImageMap().addImageMapArea( new CircleMapArea( line.x1,
                                                line.y1,
                                                iStockChartDataSet.getLowValue( i ),
                                                label,
                                                iStockChartDataSet.getLegendLabel( StockChartDataType.LOW.getInt() ) ) );

        axisChart.getImageMap().addImageMapArea( new CircleMapArea( line.x2,
                                                line.y2,
                                                iStockChartDataSet.getHighValue( i ),
                                                label,
                                                iStockChartDataSet.getLegendLabel( StockChartDataType.HIGH.getInt() ) ) );
      }

      g2d.setPaint( iStockChartDataSet.getPaint( StockChartDataType.HIGH.getInt() ) );
      g2d.setStroke( stockChartProperties.getHiLowStroke() );
      g2d.draw( line );

      line.x1+=axisChart.getXAxis().getScalePixelWidth();
      line.x2=line.x1;

      if( openLine != null )
      {
        if( iStockChartDataSet.getOpenValue( i ) != Double.NaN )
        {
          openLine.y1= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
                                                iStockChartDataSet.getOpenValue( i ),
                                                axisChart.getYAxis().getScaleCalculator().getMinValue() );
          openLine.y2=openLine.y1;

          g2d.setPaint( iStockChartDataSet.getPaint( StockChartDataType.OPEN.getInt() ) );
          g2d.setStroke( stockChartProperties.getOpenStroke() );
          g2d.draw( openLine );

          //---if we are generating an ImageMap, store the image coordinates
          if( axisChart.getGenerateImageMapFlag() )
          {
            axisChart.getImageMap().addImageMapArea( new CircleMapArea( openLine.x1,
                                                    openLine.y1,
                                                    iStockChartDataSet.getOpenValue( i ),
                                                    label,
                                                    iStockChartDataSet.getLegendLabel( StockChartDataType.OPEN.getInt() ) ) );
          }

          openLine.x1+=axisChart.getXAxis().getScalePixelWidth();
          openLine.x2+=axisChart.getXAxis().getScalePixelWidth();
        }
      }

      if( closeLine != null )
      {
        if( iStockChartDataSet.getOpenValue( i ) != Double.NaN )
        {
          closeLine.y1= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
                                                 iStockChartDataSet.getCloseValue( i ),
                                                 axisChart.getYAxis().getScaleCalculator().getMinValue() );
          closeLine.y2=closeLine.y1;

          g2d.setPaint( iStockChartDataSet.getPaint( StockChartDataType.CLOSE.getInt() ) );
          g2d.setStroke( stockChartProperties.getCloseStroke() );
          g2d.draw( closeLine );

          //---if we are generating an ImageMap, store the image coordinates
          if( axisChart.getGenerateImageMapFlag() )
          {
            axisChart.getImageMap().addImageMapArea( new CircleMapArea( closeLine.x2,
                                                    closeLine.y2,
                                                    iStockChartDataSet.getCloseValue( i ),
                                                    label,
                                                    iStockChartDataSet.getLegendLabel( StockChartDataType.CLOSE.getInt() ) ) );
          }

          closeLine.x1+=axisChart.getXAxis().getScalePixelWidth();
          closeLine.x2+=axisChart.getXAxis().getScalePixelWidth();
        }
      }
    }
  }

}
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