Package org.krysalis.jcharts.nonAxisChart

Source Code of org.krysalis.jcharts.nonAxisChart.PieLabels

/***********************************************************************************************
* 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.nonAxisChart;


import org.krysalis.jcharts.types.PieLabelType;
import org.krysalis.jcharts.chartText.NumericTagGroup;
import org.krysalis.jcharts.chartText.TextTagGroup;
import org.krysalis.jcharts.chartText.TextTag;
import org.krysalis.jcharts.properties.PieChart2DProperties;
import org.krysalis.jcharts.chartData.interfaces.IPieChartDataSet;

import java.awt.font.FontRenderContext;


/*************************************************************************************
* Package private Class used to hold values for the Pie Chart Labels
*
* @author Nathaniel Auvil
* @version $Id: PieLabels.java,v 1.1 2003/05/18 20:28:35 nathaniel_auvil Exp $
************************************************************************************/
class PieLabels
{
   private TextTagGroup textTagGroup;

  private float widestLabel;
  private float widestLabelTimesTwo;
  private float tallestLabel;
  private float tallestLabelTimesTwo;


  /***********************************************************************************
   *
   * @param properties
   * @param iPieChartDataSet
   * @param fontRenderContext
   **********************************************************************************/
  PieLabels( PieChart2DProperties properties,
          IPieChartDataSet iPieChartDataSet,
          FontRenderContext fontRenderContext )
  {
    //---if we want to display value labels on the chart need to determine the width this will take
    if( !properties.getPieLabelType().equals( PieLabelType.NO_LABELS ) )
    {
      if( properties.getPieLabelType().equals( PieLabelType.VALUE_LABELS ) )
      {
        this.textTagGroup = new NumericTagGroup( properties.getValueLabelFont(),
                                    fontRenderContext,
                                    properties.showValueLabelCurrency(),
                                    false,
                                    properties.showValueLabelGrouping(),
                                    properties.getValueLabelRoundingPowerOfTen() );

        for( int i = 0; i < iPieChartDataSet.getNumberOfDataItems(); i++ )
        {
          ((NumericTagGroup) this.textTagGroup).addLabel( iPieChartDataSet.getValue( i ) );
        }
      }
      //---PieLabelType.LEGEND_LABELS
      else
      {
        this.textTagGroup = new TextTagGroup( properties.getValueLabelFont(), fontRenderContext );
        for( int i = 0; i < iPieChartDataSet.getNumberOfLegendLabels(); i++ )
        {
          this.textTagGroup.addLabel( iPieChartDataSet.getLegendLabel( i ) );
        }
      }

      widestLabel = this.textTagGroup.getWidestLabel();
      widestLabelTimesTwo = widestLabel * 2;
      tallestLabel = this.textTagGroup.getTallestLabel();
      tallestLabelTimesTwo = tallestLabel * 2;
    }

  }


  public TextTag getTextTag( int index )
  {
    return this.textTagGroup.getTextTag( index );
  }


  public float getWidestLabelTimesTwo()
  {
    return widestLabelTimesTwo;
  }


  public float getWidestLabel()
  {
    return widestLabel;
  }


  public float getTallestLabel()
  {
    return tallestLabel;
  }


  public float getTallestLabelTimesTwo()
  {
    return tallestLabelTimesTwo;
  }

}
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