package demo;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.util.Random;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class MainPanel extends JPanel{
	Button[] button=new Button[25];//按钮数组
	ImageIcon[] icon=new ImageIcon[25];//图片数组，默认值8位空白照片
	int state[]=new int[25];//照片存放顺序
	int NullButton;//空白照片按钮
	int pattern;
	int total;
	int count;
	public MainPanel(String path,int pattern){
		this.pattern=pattern;
		total=pattern*pattern;
		this.setSize(300,300);
	    breakRandom(path,pattern);
	    
	}
	//重新设置Buttont图片
	public void breakRandom(String path,int pattern){
		count=0;
		this.pattern=pattern;
		total=pattern*pattern;
		ImageCutUtil.cutImage(new File(path+"\\"+"index.jpg"),pattern,path);
		
		System.out.println("");
		for(int i=0;i<total-1;i++){
			ImageIcon image=new ImageIcon(path+"\\"+i+".jpg");
			System.out.println("height: "+image.getIconHeight()+" width: "+image.getIconWidth());
		}
		this.removeAll();
		updateUI();
		this.setLayout(new GridLayout(pattern,pattern));
		NullButton=total-1;
		random(state);
		for(int i=0;i<total;i++){   
	    	//初始化按钮
	    	button[i]=new Button();
	    	button[i].setRow(i/pattern);//初始化每一个按钮所在的行
	    	button[i].setCol(i%pattern);//初始化每一个按钮所在的列
		    this.add(button[i]);
	    }
		
		for(int i=0;i<total-1;i++)
		System.out.print(state[i]+" ");
	    for(int i=0;i<total-1;i++){
			icon[i]=new ImageIcon(path+"\\"+state[i]+".jpg");
			//System.out.println("height: "+icon[i].getIconHeight()+" width: "+icon[i].getIconWidth());
			button[i].setImageIcon(icon[i]);
		}
	    button[total-1].setImageIcon(null);
		
		
		for(int i=0;i<total;i++){   
	    	
	    	//给每一个按钮添加监听事件
	    	button[i].addMouseListener(new MouseAdapter(){
				@Override
				public void mousePressed(MouseEvent e) {
					// TODO Auto-generated method stub
					Button button=(Button)e.getSource();
					System.out.println("点击按钮的横纵坐标为");
					System.out.println("x="+button.getRow()+"|"+"y="+button.getCol());
					remove(button);
					count++;
					System.out.println("pattern: "+pattern+"total: "+total);
					System.out.println("当前空白按钮是第几个");
					System.out.println("nullButton="+NullButton);//打印现在的空白按钮是哪个
					//打印此时的图片顺序
					System.out.println("当前图片顺序状态为");
					for(int i=0;i<total;i++){
						System.out.print(state[i]+"  ");
					}
					System.out.println();
				}
	    	});
	    }
		
	}
    public boolean isOdd(int a[]){
    	int sum=0;
    	for(int i=0;i<total;i++)
    		for(int j=i+1;j<total;j++)
    		{
    			if(a[i]>a[j])
    				sum++;
    		}
    	if(sum%2==0)
    		return true;
    	else
    		return false;
    	
    }
	//产生随机数组，打乱图片位置
	public void random(int a[]){   
	    while(true){
		Random cd=new Random();
		int i=0;
		a[0]=cd.nextInt(total-1);
		for(i=1;i<total-1;i++)
		{
			int temp=cd.nextInt(total-1);
			for(int j=0;j<i;j++)
			{
				if(a[j]!=temp)
				{
					a[i]=temp;
				}
				else
				{
					i--;
					break;
				}
			}
		}
		a[i]=total-1;
		if(isOdd(a)){
			System.out.println("图片的初始顺序状态为");
			for(i=0;i<total;i++)
				System.out.print(a[i]+"  ");
			System.out.println("isOdd"+isOdd(a));
			return ;
	    }
	   }
	}
	public void remove(Button clicked){
		System.out.println("当前  pattern: "+pattern+" total "+total+" nullButton "+NullButton);
		int rowN=button[NullButton].getRow();//得到空白按钮横坐标
		int colN=button[NullButton].getCol();//得到空白按钮纵坐标
		int rowC=clicked.getRow();//得到点击按钮横坐标
		int colC=clicked.getCol();//得到点击按钮纵坐标
		if(((rowN-rowC)==1&&(colN-colC)==0)||
		   ((rowN-rowC)==-1&&(colN-colC)==0)||
		   ((rowN-rowC)==0&&(colN-colC)==1)||
		   ((rowN-rowC)==0&&(colN-colC)==-1))
		{
			ImageIcon icon=(ImageIcon) clicked.getIcon();//得到点击按钮的图片
			button[NullButton].setImageIcon(icon);//设置空白按钮的图片，即交换空白按钮与点击按钮的图片
			clicked.setImageIcon(null);//设置点击按钮图片为空白
		    int clickState=rowC*pattern+colC;//获得点击按钮是第几个按钮(0-8)
		    NullButton=rowN*pattern+colN;//获得空白按钮是几个(0-8)
		    state[NullButton]=state[clickState];//交换图片数组的顺序状态
		    state[clickState]=total-1;
		    NullButton=clickState;//设置空白按钮是第几个
		    check();
		}
		else
		{
			return;
		}
	}
	//判断拼图是否完成
	public  void check(){
		for(int i=0;i<total;i++)
			if(state[i]!=i)
			{
				return;
			}
		JOptionPane.showMessageDialog(this, "拼图完成");
	}
	public int getCount(){
		return count;
	}

}