clipcanvas.java

来自「J2ME手机游戏开发技术详解,适合初学者阅读使用」· Java 代码 · 共 44 行

package Clip;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import java.io.*;
public class ClipCanvas extends Canvas
{

	public ClipCanvas()
        {
    
        }
        public void paint(Graphics g)
        {
        System.out.println("区域原点"+g.getClipX());
        System.out.println("区域原点"+g.getClipY());
        System.out.println("区域宽度："+g.getClipWidth());
        System.out.println("区域高度："+g.getClipHeight());
        System.out.println("画布宽度："+getWidth());
        System.out.println("画布高度："+getHeight());
        
        /*g.setColor(0x000000);
        int canvasWidth = getWidth();
        int canvasHeight = getHeight();
        g.fillRect(0,0,canvasWidth,canvasHeight);
        g.setClip(canvasWidth/4,canvasHeight/4,canvasWidth/2,canvasHeight/2);
        g.setColor(0xFFFFFF);
        g.fillRect(0,0,canvasWidth,canvasHeight);*/

        g.setColor(0x000000);
        int canvasWidth = getWidth();
        int canvasHeight = getHeight();
        g.fillRect(0,0,canvasWidth,canvasHeight);
        g.setClip(canvasWidth/4,canvasHeight/4,canvasWidth/2,canvasHeight/2);
     //   g.setClip(0,0,0,0);
        g.setColor(0xFFFFFF);
        g.fillRect(0,0,canvasWidth,canvasHeight);
        g.clipRect(0,0,canvasWidth/2,canvasHeight/2);
        g.setColor(0xFF0000);
        g.fillRect(0,0,canvasWidth,canvasHeight);
   
        }
        
}