/** 
  *  ======================================================================
  *  SimpleScreen.java. Create simple GUI with panel ...
  * 
  *  Written By : Mark Austin                                  October 2011
  *  ======================================================================
  */ 

import java.lang.Math.*;
import java.applet.*;
import java.util.*;
import java.io.*;
import java.text.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.Color;
import java.awt.font.*;
import java.awt.image.*;
import java.awt.geom.*;   // Needed for affine transformation....
import java.net.URL;

public class SimpleScreen extends JPanel {
    GraphicsGrid      grid;
    GraphicsOperation grop;
    private Dimension size;
    private Graphics    gs;
    int width, height;
    boolean DEBUG =   true;

    //  Constructor for simple screen ....

    SimpleScreen () {
       grid = new GraphicsGrid();
       grop = new GraphicsOperation();
    }

    public void paint() {
       Graphics g = getGraphics();
       super.paintComponent(g);
       paintComponent(g);
    }

    public void update(Graphics g) {}

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Dimension d = getSize();
        size   = getSize();
        height = getSize().height;
        width  = getSize().width;

        // Draw grid .....

        if ( grop.getGrid() == true ) {
           gs = getGraphics();
           grid.drawGrid( gs, getWidth(), getHeight() );
        }
    }

    // Get graphics and fill in background ....

    public void clearScreen () {
       gs = getGraphics();
       Graphics2D g2D = (Graphics2D) gs;

       g2D.setColor( Color.white );
       g2D.fillRect( 0, 0, size.width-1, size.height-1 );
    }

    // Draw grid on graphics screen ....

    void drawGrid() {
       grop.setGrid(true);
       gs = getGraphics();
       grid.drawGrid( gs, getWidth(), getHeight() );
    }
}