canvastest.java

来自「这是我第一次开始尝试J2ME平台的程序编写」· Java 代码 · 共 40 行

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;

public class CanvasTest extends Canvas {

	public CanvasTest() {
		super();
		// TODO 自动生成构造函数存根
	}

	protected void paint(Graphics arg0) {
		// TODO 自动生成方法存根
		int x=255,y=255,z=255,i = 0;
		int width = getHeight();
		while(i < width){
			arg0.setColor(x,y,z);
			arg0.drawLine(0,i,getWidth(),i);
			if(z > 0)
				z = z - 1;
			if(x > 0)
				x--;
			i = i + 2;
		}	
		x=255;
		y=255;
		z=255;
		i = getWidth();
		width = getWidth();
		while(i > 0){
			arg0.setColor(x,y,z);
			arg0.drawLine(i,0,i,getHeight());
			if(z > 0)
				z = z - 1;
			if(x > 0)
				x--;
			i = i - 2;
		}
	}
}