Package org.krysalis.jcharts.chartData.processors

Source Code of org.krysalis.jcharts.chartData.processors.TextProcessor

/***********************************************************************************************
* File Info: $Id: TextProcessor.java,v 1.1 2003/05/17 16:57:50 nathaniel_auvil Exp $
* Copyright (C) 2002
* Author: Nathaniel G. Auvil
* Contributor(s):
*
* 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.chartData.processors;


import org.krysalis.jcharts.chartText.TextTag;

import java.awt.*;
import java.awt.font.FontRenderContext;
import java.util.ArrayList;


/*******************************************************************************************
*
*
*******************************************************************************************/
public class TextProcessor
{
  private float widestLabel = Float.MIN_VALUE;
  private float tallestLabel = Float.MIN_VALUE;
  private float totalLabelWidths = 0.0f;

  private ArrayList textTags;


  /******************************************************************************************
   * Constructor
   *
   *******************************************************************************************/
  public TextProcessor()
  {
    this.textTags = new ArrayList( 30 );
  }


  /******************************************************************************************
   *
   * @param label
   * @param font
   * @param fontRenderContext
   *******************************************************************************************/
  public void addLabel( String label, Font font, FontRenderContext fontRenderContext )
  {
    TextTag textTag= new TextTag( label, font, fontRenderContext );
    this.textTags.add( textTag );

    this.widestLabel = Math.max( textTag.getWidth(), this.widestLabel );
    this.totalLabelWidths += textTag.getWidth();

    this.tallestLabel = Math.max( textTag.getHeight(), this.tallestLabel );
  }


  /******************************************************************************************
   * Returns the number of labels
   *
   * @return int
   ******************************************************************************************/
  public int size()
  {
    return this.textTags.size();
  }


  /******************************************************************************************
   * Calculates the width and height needed by the passed String when rendered
   *
   //   * @param iDataSeries
   /   * @param font
   //   * @param fontRenderContext
   *******************************************************************************************
   public void processLabels( IDataSeries iDataSeries)  {
   //LOOP
   for( int i = 0; i < iDataSeries.getNumberOfXAxisLabels(); i++ )
   {
   this.axisLabelProcessor.processLabel( iDataSeries.getXAxisLabel( i ), axisLabelFont, fontRenderContext );
   }


   TextLayout textLayout = new TextLayout( label, font, fontRenderContext );

   //---WIDTH
   this.labelWidths[ counter ] = textLayout.getAdvance();
   this.widestLabel = Math.max( this.labelWidths[ counter ], this.widestLabel );
   this.totalLabelWidths += this.labelWidths[ counter ];

   //---HEIGHT
   this.labelHeights[ counter ] = textLayout.getAscent() + textLayout.getDescent();
   this.tallestLabel = Math.max( this.labelHeights[ counter ], this.tallestLabel );

   //---need this to offset font rendering, as rendering is at the baseline not bottom or top,
   this.fontDescent = textLayout.getDescent();

   this.counter++;
   }


   /******************************************************************************************
   *
   *
   ******************************************************************************************/
  public float getWidestLabel()
  {
    return this.widestLabel;
  }


  /******************************************************************************************
   *
   *
   ******************************************************************************************/
  public float getTallestLabel()
  {
    return this.tallestLabel;
  }


  /******************************************************************************************
   *
   *
   ******************************************************************************************/
  public float getTotalLabelWidths()
  {
    return this.totalLabelWidths;
  }


  /******************************************************************************************
   *
   * @param index
   * @return TextTag
   ******************************************************************************************/
  public TextTag getTextTag( int index )
  {
    return (TextTag) this.textTags.get( index );
  }
}
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