intro.java

实现了对GUM类型的图像的放大缩小漫游的功能

import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.font.*;
import javax.swing.*;
import java.util.List;
import java.util.Arrays;

public  class intro extends JPanel{
	static BufferedImage bimg;
	static intro myintro;
	public drawThread thread ;
	static Image img;
	static String info1[]={"工具栏使用说明",
						   "缩小地图：","将当前显示的地图长宽缩小为原来的0.83倍",
						   "放大地图：","将当前显示的地图长宽放大为原来的1.20倍",
						   "显示地图：","显示当前选中的地图（支持多选）",
						   "打开文件：","打开Gum格式文件（支持一次打开多个文件）",
						   "拖动：    ","当按钮为 蓝色 时表示当前处于拖动状态，按住鼠标左键可以拖动地图",
						   "选择放大：","当按钮为 蓝色 时表示当前处于选择放大状态，按住鼠标左键可以选中区域放大",
						   "说明    ：","当这两个按钮都不选中时表示当前状态为选择状态，单击鼠标左键可以选中当前元素",
						   "功能设置：","设置一些参数和配置",
						   "关于程序：","关于这个程序的一点说明"};
	static Font fonts[]={new Font("宋体", Font.BOLD , 18),
						new Font("宋体", Font.PLAIN, 16)};
	static Color colors[]={Color.black,Color.gray ,new Color(0,0,102)};
	
	public intro()
	{
		img=getImage();
		thread=new drawThread();
	}
	public void start()
	{
		if( thread!=null)
			thread.start();
	}
	public void stop()
	{
		if( thread!=null)
			thread.stop();
	}
	public void restart()
	{
		stop();
		thread=new drawThread();
		thread.start();
	
	}
	
	public void paint(Graphics g)
	{
		super.paint(g);
		if(bimg!=null)
			g.drawImage((Image)bimg,0,0,this);
	}
	public  Image getImage() {
        Image img = this.getToolkit().createImage(getClass().getResource(".\\resources\\images\\cupanim.gif"));

        MediaTracker tracker = new MediaTracker(this);
        tracker.addImage(img, 0);
        try {
            tracker.waitForID(0);
            if (tracker.isErrorAny()) {
                System.out.println("Error loading image " );
          }
        } catch (Exception ex) { ex.printStackTrace(); }
        return img;
    }
	public static void main(String args[])
	{
		myintro=new intro();
        WindowListener l = new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
            public void windowDeiconified(WindowEvent e) { myintro.start(); }
            public void windowIconified(WindowEvent e) { myintro.stop(); }
        };
        JFrame f = new JFrame("Intro");
        f.addWindowListener(l);
        f.getContentPane().add("Center", myintro);
        f.pack();
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        int w = 720;
        int h = 510;
        f.setLocation(screenSize.width/2 - w/2, screenSize.height/2 - h/2);
        f.setSize(w, h);
        f.setVisible(true);
		
        myintro.start();
	}
	class drawThread extends Thread
	{
		private Rectangle currrect,rect1, rect2;
		public void run()
		{
			currrect=intro.myintro.getVisibleRect();
			intro.bimg=(BufferedImage) createImage(currrect.width,currrect.height);
			Graphics2D g2 = intro.bimg.createGraphics();
			g2.setBackground(Color.white);
			rect1=new Rectangle(20,0,40,0);
			rect2=new Rectangle(0,20,0,40);
			for(int i=0;i<=50;i++)
			{
                g2.clearRect(0, 0, currrect.width , currrect.height);
				currrect=intro.myintro.getVisibleRect();
				rect2.x=currrect.width*(50-i)/50;
				rect2.width =currrect.width*i/50;
				g2.setColor(Color.green);
				g2.fillRect(rect2.x,rect2.y,rect2.width,rect2.height);	
				
				
				rect1.y=currrect.height*(50-i)/50;
				rect1.height=currrect.height*i/50;
				g2.setColor(Color.red);
				g2.fillRect(rect1.x,rect1.y,rect1.width,rect1.height);	
				
				g2.drawImage(intro.img,30,30,null);
				intro.myintro.repaint();
				
				try{
					sleep(20);
				}
				catch(Exception ex){}
			}
			
			g2.setFont(fonts[0]);
			g2.setColor(colors[0]);
			for(int i=1;i<=intro.info1[0].length();i++)
			{	
				g2.drawString(intro.info1[0].substring(0,i),100,100);
				intro.myintro.repaint();
				try{
					sleep(10);
				}
				catch(Exception ex){}
			}
			
			g2.setFont(fonts[1]);
			for(int j=1;j<intro.info1.length;j+=2)
			{
				for(int i=1;i<=intro.info1[j].length();i++)
				{
					g2.setColor(colors[1]);
					g2.drawString(intro.info1[j].substring(0,i),120,150+j*16);
					intro.myintro.repaint();
					try{
						sleep(10);
					}
					catch(Exception ex){}
				}
				for(int i=1;i<=intro.info1[j+1].length();i++)
				{
					g2.setColor(colors[2]);
					g2.drawString(intro.info1[j+1].substring(0,i),200,150+j*16);
					intro.myintro.repaint();
					try{
						sleep(10);
					}
					catch(Exception ex){}
				}
			}
			g2.setFont(new Font("serif", Font.PLAIN, 26));
			g2.setColor(Color.orange );
			String thx="Thank you for using!";
			for(int i=1;i<=thx.length();i++)
			{					
				g2.drawString(thx.substring(0,i),250,500);
				intro.myintro.repaint();
				try{
					sleep(10);
				}
				catch(Exception ex){}
			}
			
		}
	}
}