/***********************************
會考第一題：填圖程式
要用以下的方式執行系統才不會發生錯誤（增大stack memory）
java -Xss20M b1
************************************/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
public class b1 extends b1pre implements ActionListener//按鈕事件
{
    Container c;
    JButton rot0,rot1;
    JRadioButton r_JRadioButton,g_JRadioButton,b_JRadioButton;
    ButtonGroup radiogroup = new ButtonGroup();
    JLabel lab1=new JLabel("功能列表");
    int mode=0;
    radioact RA1=new radioact();
    int now_x,now_y;
    int clrpt=0,oldpt=0;
    static  int cnt=0;
    public b1()   //建構元
    {
	super("填圖程式");
	int i,j;
        c=getContentPane();
	//設定buttom
	rot0=new JButton("結束");
	//設定radio
	r_JRadioButton = new JRadioButton("red",true);
        g_JRadioButton = new JRadioButton("green");
        b_JRadioButton = new JRadioButton("blue");
	radiogroup.add(r_JRadioButton);
        radiogroup.add(g_JRadioButton);
        radiogroup.add(b_JRadioButton);
	//設定視窗大小
	setSize(820,800);
	c.setLayout(new FlowLayout(FlowLayout.CENTER));
	//裝設各種Adaptor
	c.add(lab1);
	c.add(rot0);
	c.add(r_JRadioButton);
	c.add(g_JRadioButton);
	c.add(b_JRadioButton);
	rot0.addActionListener(this);
	r_JRadioButton.addItemListener(RA1);
	g_JRadioButton.addItemListener(RA1);
	b_JRadioButton.addItemListener(RA1);
	addMouseListener(new cmouse());
	show();
    }
    public void paint(Graphics g)  //真正的畫圖設定
    {
	int x,y;
	super.paint(g);
	for (x=0;x<max_X;x=x+1)
		for (y=0;y<max_Y;y=y+1)
		{
			g.setColor(pencolor[data[y][x]]);
			g.drawLine(x,y+80,x,y+80);
		}

    }
    //按鈕事件處理
     public void actionPerformed(ActionEvent e) 
     {
         if (e.getSource()==rot0)//結束
	  {
	     System.exit(0);
	  }
     }
      /************選擇顏色*************************/
    class radioact implements ItemListener 
    {
      public void itemStateChanged(ItemEvent e)
      {
      	 if (e.getSource() == r_JRadioButton)
      	     clrpt = 0;
      	 else if (e.getSource() == g_JRadioButton)   
      	     clrpt = 1;
      	 else
      	     clrpt = 2;
      	 repaint();    
      }
    }//radioact

    /*****實作滑鼠事件處理物件 *******/
    class cmouse extends MouseAdapter
    {
    	public void mousePressed(MouseEvent e) //壓下滑鼠，填圖
        { 
		now_x=e.getX();
		now_y=e.getY();
                oldpt=getb_xy(now_x,now_y-80);//記錄位置與顏色
		fill(now_x,now_y-80); //呼叫填圖方法
	        repaint(); //重新顯示一次
        }	

    } 
    //真正填圖
    public void fill(int x, int y)
    {
	    if (clrpt==oldpt) return;//顏色一樣就不用填了
	    if (getb_xy(x,y)==oldpt) //沒填過，填下去。
	    {
		setb_xy(clrpt,x,y);
	    }
	    else return;
	    //填上下左右四個方向的點
	    if (y>=1)
	    {
	    	if (getb_xy(x,y-1)==oldpt) fill(x,y-1);
	    }
	    if (y<=max_Y-2)
	    {
		    if (getb_xy(x,y+1)==oldpt) fill(x,y+1);
	    }
	    if (x>=1)
	    {
		    if (getb_xy(x-1,y)==oldpt) fill(x-1,y);
	    }
	    if (x<=max_X-2)
	    {
		    if (getb_xy(x+1,y)==oldpt) fill(x+1,y);
	    }
	    return;
	  
    }
    //**********************/
    public static void main(String args[]) //程式起點
    {
	b1 app=new b1(); //畫圖
	//處理視窗關閉要求
	app.addWindowListener(
         new WindowAdapter()
         {
            public void windowClosing(WindowEvent e)
            {  System.exit(0);}
         });
	
    }
}