package visual.statik.described;


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

/**
 * A VisualComponent that illustrates the rendering of
 * described visual content
 *
 * @author  Prof. David Bernstein, James Madison University
 * @version 1.0
 */
public class   RenderingExampleCanvas 
       extends JComponent
{
    
    /**
     * Default Constructor
     */
    public RenderingExampleCanvas()
    {
       super();
    }
    

    /**
     * Paint this Component
     *
     * @param g   The rendering engine to use
     */
    public void paint(Graphics g)
    {
       AlphaComposite         composite;       
       GradientPaint          gradient;       
       Graphics2D             g2;       
       Rectangle2D            rectangle;
       Stroke                 stroke;
       
        

       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);


//[1.
        
       // The first rectangle
       rectangle = new Rectangle2D.Double( 10.0,  20.0,
                                           100.0,      
                                           150.0);     

       // Fill in JMU Gold
       g2.setPaint(new Color(0xC2, 0xA1, 0x4D));
       g2.fill(rectangle);
        

       // Stroke in JMU purple
       stroke = new BasicStroke(5.0f, 
                                BasicStroke.CAP_BUTT, 
                                BasicStroke.JOIN_MITER);
       g2.setStroke(stroke);       
       g2.setColor(new Color(0x45, 0x00, 0x84));
       g2.draw(rectangle);

//]1.



//[2.

       // The second rectangle
       rectangle = new Rectangle2D.Double( 200.0, 200.0,
                                           100.0,       
                                           150.0);      

       // Fill using a gradient
       gradient=new GradientPaint(200.0f, 275.0f, Color.CYAN,
                                  300.0f, 275.0f, Color.WHITE);       
       g2.setPaint(gradient);
       g2.fill(rectangle);

       // Stroke in black
       stroke = new BasicStroke(10.0f, 
                                BasicStroke.CAP_BUTT, 
                                BasicStroke.JOIN_ROUND);
       g2.setStroke(stroke);       
       g2.setColor(Color.BLACK);
       g2.draw(rectangle);
//]2.        


//[3.

       // The third rectangle
       rectangle = new Rectangle2D.Double( 50.0, 50.0,
                                          200.0,      
                                          250.0);     


       // Use alpha blending to achieve a transparency effect
       composite = AlphaComposite.getInstance(
                                     AlphaComposite.SRC_OVER,
                                     0.5f);
       g2.setComposite(composite);
       
       // Fill in gray
       g2.setPaint(Color.YELLOW);
       g2.fill(rectangle);

       // Don't stroke 
//]3.
    }
    
}