package visual.statik.described;


import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.text.*;
import javax.swing.*;

/**
 * A panel that displays an AttributedString
 *
 * @author  Prof. David Bernstein, James Madison University
 * @version 1.0
 */
public class AttributedStringCanvas extends GlyphCanvas
{

    /**
     * Default Constructor
     */
    public AttributedStringCanvas()
    {
       super();
    }


    /**
     * Paint this component
     *
     * @param g   The Graphics context to use
     */
    public void paint(Graphics g)
    {
       Graphics2D              g2;

       super.paint(g);
       g2 = (Graphics2D)g;

       // Use antialiasing for text and shapes
       g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                           RenderingHints.VALUE_ANTIALIAS_ON);

       // Use high-quality rendering
       g2.setRenderingHint(RenderingHints.KEY_RENDERING,
                           RenderingHints.VALUE_RENDER_QUALITY);

       // Use floating point for font metrics
       g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
                           RenderingHints.VALUE_FRACTIONALMETRICS_ON);


       // Render the glyphs
       if (text != null) paintGlyphs(g2, text);
    }


    /**
     * Render the text using attributes
     */
    protected void paintGlyphs(Graphics2D g2, String text)
    {
//[step1.
       AttributedString        as;

       as = new AttributedString(text);
       for (int i=0; i < text.length(); i++) 
       {
          as.addAttribute(TextAttribute.FONT,
                          new Font("Serif", Font.PLAIN, (i+10)), 
                          i, i+1);
       }
//]step1.

//[step2.
       g2.setColor(Color.BLACK);
       g2.drawString(as.getIterator(), 0, 100);
//]step2.
    }

}