JAVA Frame 窗体背景图片，首位相接滚动代码实例_Java教程

JAVA Frame 窗体背景图片，首位相接滚动代码实例

2020-09-11 10:13hongyu83916 Java教程

这篇文章主要介绍了JAVA Frame 窗体背景图片，首位相接滚动代码示例,需要的朋友可以参考下复制代码

背景图片连续滚动，程序已经跑过。前提！背景图片宽度比窗体长些，代码如下：

100

101

									import Java.awt.Graphics;

									import java.awt.Image;

									import javax.swing.ImageIcon;

									import mine.game.util.PropertiesUtil;

									@SuppressWarnings("serial")

									public class GameFrame extends MyFrame{

									private Image img=ImageUtil.imageLoad("image/bk.jpg");

									double movs,speed=1,headmovs;

									double pWidth,pHeight,bgWidth;

									@Override

									public void paint(Graphics g) {

									//g.drawImage(img, 0, 0, null);

									//===================================================

									pWidth=PropertiesUtil.getValue("Width", "game.properties");

									pHeight=PropertiesUtil.getValue("Height", "game.properties");

									bgWidth=new ImageIcon(img).getIconWidth();

									//movs+=speed;

									if(bgWidth>pWidth+movs){

									g.drawImage(img, 0, 0, (int)pWidth,(int)pHeight, (int)movs, 0, (int)(pWidth+movs), (int)pHeight, null);

									}

									if(bgWidth<=pWidth+movs){

									headmovs=pWidth+movs-bgWidth;

									g.drawImage(img, 0, 0, (int)(pWidth-headmovs),(int)pHeight, (int)movs, 0, (int)(bgWidth), (int)pHeight, null);

									g.drawImage(img,(int)(pWidth-headmovs), 0, (int)pWidth,(int)pHeight, 0, 0, (int)(headmovs), (int)pHeight, null);

									if(headmovs>=pWidth){

									//重新初始化所有变量数据，循环

									movs=headmovs-pWidth;

									}

									}

									movs+=speed;

									//===================================================

									}

									public static void main(String[] args) {

									GameFrame gf=new GameFrame();

									gf.launchFrame();

									}

									}

									//=================================

									import java.awt.Frame;

									import java.awt.Graphics;

									import java.awt.event.WindowAdapter;

									import java.awt.event.WindowEvent;

									import java.awt.image.BufferedImage;

									import mine.game.util.PropertiesUtil;

									@SuppressWarnings("serial")

									public class MyFrame extends Frame{

									private BufferedImage imgBuffer;

									private Graphics gBuffer;

									public void launchFrame(){

									int wd=800;//PropertiesUtil.getValue("Width", "game.properties");

									int ht=600;//PropertiesUtil.getValue("Height", "game.properties");

									setSize(wd,ht);

									 setLocation(0, 0);

									 setVisible(true); 

									 new PaintThread().start(); 

									 addWindowListener(new WindowAdapter() {

									@Override

									public void windowClosing(WindowEvent e) {

									System.exit(0);

									} 

									});

									}

									//重画窗口线程，内部类

									class PaintThread extends Thread{

									public void run(){

									while(true){

									repaint();

									try {

									Thread.sleep(10);

									} catch (InterruptedException e) {

									e.printStackTrace();

									}

									}

									}

									}

									/**

									 * 双缓冲解决，屏闪.此方法在，继承Frame的AWT编程中才有效。JFram不凑效,其有自己先进的实现方式（自己猜的，有时间学学）

									 */

									@Override

									public void update(Graphics g) {

									if(imgBuffer==null){

									imgBuffer=(BufferedImage)createImage(this.getWidth(),this.getSize().height);//创建图形缓冲

									//imgBuffer=new BufferedImage((int)this.getSize().getWidth(),(int)this.getSize().getHeight(),BufferedImage.TYPE_4BYTE_ABGR);//创建图形缓冲

									}

									gBuffer=imgBuffer.getGraphics();//获取图形缓冲区的图形上下文

									 gBuffer.fillRect(0, 0, this.getWidth(), this.getHeight());

									this.paint(gBuffer);//用paint方法中编写的绘图过程对图形缓冲区绘图

									gBuffer.dispose();//释放图形上下文资源

									g.drawImage(imgBuffer, 0, 0, null);//将图形缓冲区绘制到屏幕上

									}

									}

									//====================

									import java.awt.Image;

									import java.awt.Toolkit;

									import java.NET.URL;

									public class ImageUtil {

									public static Image imageLoad(String path){

									URL u=ImageUtil.class.getClassLoader().getResource(path);

									return Toolkit.getDefaultToolkit().getImage(u);

									}

									}