/*   スクロールのテスト  Ver 0.00   */
/*                                  */
/*                                  */
/*   by Atsushi         2000/7/24   */


import java.util.Random;
import java.util.TimerTask;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;


class ScrollTestTask extends TimerTask
{
	/*   ---   Field   ---   */

	private DoubleBufferedCanvas canvas;
	private Image back;

	private Random random;
	private int scroll;

	/*   ---   Constructor   ---   */

	public ScrollTestTask(DoubleBufferedCanvas canvas)
	{
		this.canvas=canvas;
		
		back=Image.createImage("/back.gif");
		random=new Random();
		scroll=0;
	}

	/*   ---   開始・終了   ---   */

	public void run()
	{
		canvas.getBufferGraphics().drawImage(
		    back,-scroll,canvas.getHeight()-1,
		    Graphics.LEFT | Graphics.BOTTOM);
		canvas.repaint();
		
		scroll++;
		if (back.getWidth()-scroll<canvas.getWidth())
		{
			scroll=0;
		}
	}
}