// File jmhCircleDrawer1.java

import java.applet.Applet;
import java.awt.*;

/** Draw circles centered where the user clicks.
 *  Uses an external listener.
 *  <P>
 *  Taken from Core Web Programming Java 2 Edition
 *  from Prentice Hall and Sun Microsystems Press,
 *  http://www.corewebprogramming.com/.
 *  May be freely used or adapted.
 *
 *  @author   Francis F. Fernandes, fffernan@cs.uml.edu
 *  @version  updated by FFF on April 18, 2002 at 04:17 PM
 */

public class jmhCircleDrawer1 extends Applet 
{

	/** Added FFF value that is going to hold the bottom of the clipping in pixels*/
  public int intBottomclip=0;

	/** the listener for all events originoally in this applet*/
  jmhCircleListener cL = null ;
  
  /** array of predefined colors (except lightGray, the color of the drawing panel) */
  public Color[] colors = { Color.black, Color.blue, Color.cyan, Color.darkGray, 
                            Color.gray, Color.green, Color.magenta, Color.orange, 
                            Color.white, Color.yellow } ;

  /** the left X coordinate of the color panel */
  public int intColorPanelLeftX = 0 ;

  /** the top Y coordinate of the color panel */
  public int intColorPanelTopY = 0 ;

  /** the width coordinate of the color panel */
  public int intColorPanelWidth = 100 ;

  /** the height coordinate of the color panel */
  public int intColorPanelHeight = 30 ;
 
  /** Keeps track of the mouse position's X coordinate when needed FFF*/
	public int lastX=-60;

	/** Keeps track of the mouse position's Y coordinate when needed FFF*/
	public int lastY=-60;

	/** Used to figure out the width of characters when typing text FFF*/
	public FontMetrics fm;

	/** Creates a font FFF*/
	Font font = new Font("Times", Font.PLAIN, 15);

  /** the standard Applet init method */
  public void init() 
  {
    // the following original Hall & Brown code was removed by JMH
    // it is replaced by instantiating a jmhCircleListener object below
    // setForeground( Color.blue ) ;
    // addMouseListener( new CircleListener() ) ;
    
    // initialization must occur here, not in declaration line,
    // because Graphics is not defined until here
    cL = new jmhCircleListener( this, getGraphics() ) ;
    
		// the same class is added as a MouseListener and a MouseMotionListener
    addMouseListener( cL ) ;
    addMouseMotionListener( cL ) ; 
		//
		addKeyListener(cL);   

		//TextField output = new TextField();
		//add(output);
  }
  

  /** the standard Applet paint method */
  public void paint( Graphics g )
  {
    int k ;  // local loop index external to loop scope
		    

    // display the color panel
    for ( k = 0 ; k < colors.length ; k++ )
    {	
      g.setColor( colors[k] ) ;
      g.fillRect( intColorPanelLeftX, intColorPanelTopY + intColorPanelHeight*k, 
                  intColorPanelWidth, intColorPanelHeight ) ;
      switch ( k )
      {
        case 0 : g.setColor( Color.white ) ;
                 g.drawString( "Black", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
                 g.drawString( "ALT-1", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 1 : g.setColor( Color.white ) ;
                 g.drawString( "Blue", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
								 g.drawString( "ALT-2", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 2 : g.setColor( Color.black ) ;
                 g.drawString( "Cyan", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
								 g.drawString( "ALT-3", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 3 : g.setColor( Color.white ) ;
                 g.drawString( "Dark Gray", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
								 g.drawString( "ALT-4", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 4 : g.setColor( Color.black ) ;
                 g.drawString( "Gray", intColorPanelLeftX+5, 
											intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
								 g.drawString( "ALT-5", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 5 : g.setColor( Color.black ) ;
                 g.drawString( "Green", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
								 g.drawString( "ALT-6", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 6 : g.setColor( Color.black ) ;
                 g.drawString( "Magenta", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
								 g.drawString( "ALT-7", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
        case 7 : g.setColor( Color.black ) ;
                 g.drawString( "Orange", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
                 g.drawString( "ALT-8", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 
                 break ;
        case 8 : g.setColor( Color.black ) ;
                 g.drawString( "White", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
                 g.drawString( "ALT-9", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 
                 break ;
        case 9 : g.setColor( Color.black ) ;
                 g.drawString( "Yellow", intColorPanelLeftX+5, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
                 g.drawString( "ALT-0", intColorPanelLeftX+5+55, 
                      intColorPanelTopY + intColorPanelHeight*k + 15 ) ;//Added by FFF
                 break ;
      }
    }
    
    // display the clear button
    g.setColor( Color.black ) ;
    g.drawRect( intColorPanelLeftX, intColorPanelTopY + intColorPanelHeight*k, 
                intColorPanelWidth, intColorPanelHeight ) ;
    g.drawString( "Clear Screen", intColorPanelLeftX+5, 
         intColorPanelTopY + intColorPanelHeight*k + 15 ) ;
		g.drawLine( 0 , intColorPanelHeight*(k+1), 1000, intColorPanelHeight*(k+1));
		g.drawString( "Error Message:", intColorPanelLeftX+5, intColorPanelTopY + intColorPanelHeight*(k+1) + 15 ) ;
		g.drawLine( 0 , intColorPanelTopY + intColorPanelHeight*(k+1) + 18 , 1000, intColorPanelTopY + intColorPanelHeight*(k+1) + 18);

		
		// don't draw over the color panel added by FFF to fix the bug when it repaints
    intBottomclip=intColorPanelHeight*(k+1)-1;
		g.setClip( intColorPanelWidth, intColorPanelTopY,
                 1000, intBottomclip+1) ;
		//gets the length for the characters in a font FFF
		g.setFont(font);
		fm=getFontMetrics(font);

    // plot all the points in the Vector modified FFF
		//set up to take in three types of objects now text, line data, and circle data
    for ( k = 0 ; k < cL.vecPoints.size() ; k++ )
			{
			g.setColor( ((jmhPointData) cL.vecPoints.elementAt( k )).getColor() ) ;
			
			//System.out.println( (((jmhPointData) cL.vecPoints.elementAt( k )).getX()));
			
			if( (((jmhPointData) cL.vecPoints.elementAt( k )).getChar()).compareTo("circle") == 0)
				{	
				g.fillOval( (int) ((jmhPointData) cL.vecPoints.elementAt( k )).getX()-cL.getRadius(),
										(int) ((jmhPointData) cL.vecPoints.elementAt( k )).getY()-cL.getRadius(),
										2*cL.getRadius(),
										2*cL.getRadius() ) ;
				}
			//replot lines
			else if((((jmhPointData) cL.vecPoints.elementAt( k )).getChar()).compareTo("line") == 0)
				{
				g.drawLine((int) ((jmhPointData) cL.vecPoints.elementAt( k )).getX(), (int) ((jmhPointData) cL.vecPoints.elementAt( k )).getY(),(int) ((jmhPointData) cL.vecPoints.elementAt( k )).getXb(),(int) ((jmhPointData) cL.vecPoints.elementAt( k )).getYb());
				}
			//replot text
				else
				{
				g.drawString(((jmhPointData) cL.vecPoints.elementAt( k )).getChar(), (int) ((jmhPointData) cL.vecPoints.elementAt( k )).getX(),(int) ((jmhPointData) cL.vecPoints.elementAt( k )).getY());
				}	
		  }
  }
}