/*

	Author: 		Chris Johnson
				johnson@dcs.gla.ac.uk
			
	Last modified:	26/10/09
	
	Description:	Provides users with a choice of shapes and a fill option.
				Updates the screen in response to these selections.
 */

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

public class GraphChoice extends Applet {
    Choice choice; //pop-up list of choices
    Canvas rectangle; // graphic area to illustrate drawing
    
    Checkbox filled;	// check box to fill rectangle or not
    
    static boolean DEBUG = true;

    public void init() {
		
		if (DEBUG)
			System.out.println("Here4");
		
		filled = new Checkbox("Filled?");
			
        choice = new Choice();
        choice.addItem("Select a shape to be drawn...");
        choice.addItem("drawRect(int, int, int, int)");
        choice.addItem("draw3DRect(int, int, int, int, boolean)");
        choice.addItem("drawRoundRect(int, int, int, int, int, int)");
        choice.addItem("drawOval(int, int, int, int)");

		rectangle = new Canvas();
		
		
		setLayout(new BorderLayout(2,2));
        //Add components to the Applet.
        add("North", choice); 
        add("Center", rectangle);
        add("South", filled);
        
  
       	validate();
    }

        
    public boolean action(Event e, Object arg) {
    	
    	Graphics g = rectangle.getGraphics(); // get graphics handle of canvas
        	Dimension the_size = size();
        	Point the_position = location();
        	int width = the_size.width/2;
        	int height = the_size.height/2;
        	int new_x = the_position.x+(the_size.width/4);
        	int new_y = the_position.x+(the_size.width/4);
        	
        	g.setColor(Color.blue);

        	g.clearRect(the_position.x, the_position.y, the_size.width, the_size.height);
        	
        	
        if ((filled.getState()== false) && ((e.target instanceof Choice) || (e.target instanceof Checkbox))) {
        	
        	if (choice.getSelectedItem()=="draw3DRect(int, int, int, int, boolean)")
        	{
        		if (DEBUG)  System.out.println("3D...");
        			
					g.draw3DRect(new_x, new_y, width-1, height-1, true); // true here if raised 
					g.draw3DRect(new_x+3, new_y+3, width-7, height-7, false);           	
            }
            else if (choice.getSelectedItem()=="drawRoundRect(int, int, int, int, int, int)")
        	{
        		if (DEBUG) System.out.println("Round...");
        			g.drawRoundRect(new_x, new_y,width, height,30, 30);
        			// last two parameters are the diameter of the arcs at the corners
            }
                  else if (choice.getSelectedItem()=="drawRect(int, int, int, int)")
        	{
        		if (DEBUG)  System.out.println("Rect...");
        			g.drawRect(new_x, new_y, width, height);
			}
			               else if (choice.getSelectedItem()=="drawOval(int, int, int, int)")
        	{
        		if (DEBUG)  System.out.println("Oval...");
        			g.drawOval(new_x+(new_x/2), new_y, width/2, height);
			}		
            return true;
        }
        
        else if ((e.target instanceof Choice)|| (e.target instanceof Checkbox)) {
        	
        	if (choice.getSelectedItem()=="draw3DRect(int, int, int, int, boolean)")
        	{
        		if (DEBUG) 
        			System.out.println("Filled 3D...");	
        			g.draw3DRect(new_x, new_y, width-1, height-1, true); // true here if raised 
					g.fill3DRect(new_x+3, new_y+3, width-7, height-7, false); 
        		    	
            }
            else if (choice.getSelectedItem()=="drawRoundRect(int, int, int, int, int, int)")
        	{
        		if (DEBUG) 
        			System.out.println("Filled Round...");;
				g.fillRoundRect(new_x, new_y, width, height, 30, 30);
            }
                  else if (choice.getSelectedItem()=="drawRect(int, int, int, int)")
        	{
        		if (DEBUG) 
        			System.out.println("Filled Rect - sorted...");;
				g.fillRect(new_x, new_y, width, height);	
            }                  else if (choice.getSelectedItem()=="drawOval(int, int, int, int)")
        	{
        		if (DEBUG) 
        			System.out.println("Filled Oval - sorted...");;
				g.fillOval(new_x+(new_x/2), new_y, width/2, height);	
            }
            return true;
        }
        return false;
    }
}