clippingtest.java~1~

来自「java教程第八章事例」· JAVA~1~ 代码 · 共 43 行

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class ClippingTest extends MIDlet{

	Display display;
	MyCanvas myCanvas;
	
	public ClippingTest(){
		display = Display.getDisplay(this);
		myCanvas = new MyCanvas();
	}


	public void startApp(){
		display.setCurrent(myCanvas);
	}

	public void pauseApp(){
	}

	public void destroyApp(boolean unconditional){
	}

	class MyCanvas extends Canvas implements CommandListener{
	
		Command moveRightCmd, moveDownCmd;
		Image image;
		int clippingX, clippingY;
		int clippingWidth, clippingHeight;
		boolean reverseX, reverseY;
	
		public MyCanvas(){
			clippingX = 0;
			clippingY = 0;
			clippingWidth = 40; 
			clippingHeight = 40;
			reverseX = false;
			reverseY = false;
			try{
				image = Image.createImage("/_logo_8.png");
			}catch(Exception ex){}
			moveRightCmd = new Command("