import java.awt.*;

public class CC5 {

	// It's easier to see the order in which cells draw
	// if you change the color every time.
	public static Color getRandomColor() {
		int r = (int)(Math.random() * 256);
		int g = (int)(Math.random() * 256);
		int b = (int)(Math.random() * 256);
		return new Color(r,g,b);
	}

	public static void drawWhateverInsideCell(int left, int top, int szSubFig) {
		// this is where you draw INSIDE the cell
	}

	public static void grid(Graphics2D g, int x, int y, int szSubFig, int rc)
	throws InterruptedException {
		int left = x;
		int top = y;
		for (int r = 0; r < rc; r++) {
			for (int c = 0; c < rc; c++) {
				System.out.println("row="+r+",col="+c + " left="+left + " top=" + top);
				g.setColor(getRandomColor());
				g.fillRect(left, top, szSubFig, szSubFig);
				drawWhateverInsideCell(left, top, szSubFig);
				Thread.sleep(1000);
				left = left + szSubFig; // comment out this line to learn how this works
			}
			top = top + szSubFig; // comment out this line to learn how this works
			left = x; // comment out this line to learn how this works
		}
	}

	public static void frame(Graphics2D g, int x, int y, int szSubFig, int rc)
	throws InterruptedException {
		int left = x;
		int top = y;
		int wh = szSubFig * rc;
		g.setColor(Color.RED);
		g.drawRect(left, top, wh, wh);
		Thread.sleep(2000);
		System.out.println();
		grid(g, x, y, szSubFig, rc);
	}


	public static void main(String[] args)
	throws InterruptedException {
		DrawingPanel dp = new DrawingPanel(400,400);
		dp.setBackground(Color.WHITE);
		Graphics2D g = dp.getGraphics();
		frame(g, 0, 0, 100, 1);
		frame(g, 10, 120, 24, 5);
		frame(g, 150, 20, 40, 6);
		frame(g, 130, 275, 36, 3);
	}

}