handlemouse.java

《Java课程设计》第二版

import java.awt.event.*;
import java.awt.*;
public class HandleMouse implements MouseListener,MouseMotionListener {
    TowerPoint [] pointA,pointB,pointC;
    TowerPoint startPoint=null,endPoint=null;
    int leftX,leftY,x0,y0;
    boolean move=false,countTime=false;
    Container con;
    HandleMouse(Container con){
        this.con=con;
    }
    public void setPointA(TowerPoint [] pointA){
        this.pointA=pointA;
    }
    public void setPointB(TowerPoint [] pointB){
        this.pointB=pointB;
    }
    public void setPointC(TowerPoint [] pointC){
        this.pointC=pointC;
    }
    public void mousePressed(MouseEvent e){
        move=false;
        Disc disc=null;
        disc=(Disc)e.getSource();
        startPoint=disc.getPoint(); 
        x0=e.getX();    
        y0=e.getY();
        int m=0;
        for(int i=0;i<pointA.length;i++){   
             if(pointA[i].equals(startPoint)){
                 m=i;
                 if(m>0&&(pointA[m-1].isHaveDisc()==false)){
                     move=true;
                     break;
                 } 
                 else if(m==0){
                     move=true;
                     break; 
                 }
            }                               
         }
 
         for(int i=0;i<pointB.length;i++){   
           if(pointB[i].equals(startPoint)){
                 m=i;
                 if(m>0&&(pointB[m-1].isHaveDisc()==false)){
                     move=true;
                     break;
                 } 
                 else if(m==0){
                     move=true;
                     break; 
                 }
            }                           
          }
          for(int i=0;i<pointC.length;i++){   
            if(pointC[i].equals(startPoint)){
                 m=i;
                 if(m>0&&(pointC[m-1].isHaveDisc()==false)){
                     move=true;
                     break;
                 } 
                 else if(m==0){
                     move=true;
                     break; 
                 }
            }                              
          }
    } 
 
    public void mouseMoved(MouseEvent e){}
 
    public void mouseDragged(MouseEvent e){
        Disc disc=null;
        disc=(Disc)e.getSource();                        
        leftX=disc.getBounds().x;
        leftY=disc.getBounds().y;
        int x=e.getX();     
        int y=e.getY();
        leftX=leftX+x;
        leftY=leftY+y;
        if(move==true)
           disc.setLocation(leftX-x0,leftY-y0);
    }
    public void mouseReleased(MouseEvent e){
         Disc disc=null;          
         disc=(Disc)e.getSource();
         Rectangle rect=disc.getBounds();
         boolean location=false;
         int x=-1,y=-1;
         for(int i=0;i<pointA.length;i++){ 
             x=pointA[i].getX();
             y=pointA[i].getY();
             if(rect.contains(x,y)){
                  endPoint=pointA[i];
                  if(i==pointA.length-1&&endPoint.isHaveDisc()==false){
                     location=true;
                     break;
                  }
                  else if(i<pointA.length-1&&pointA[i+1].isHaveDisc()==true
                          &&endPoint.isHaveDisc()==false
                          &&pointA[i+1].getDiscOnPoint().getNumber()
                            >disc.getNumber()){
                     location=true;
                     break;
                  }             
             }         
         }
         for(int i=0;i<pointB.length;i++){ 
             x=pointB[i].getX();
             y=pointB[i].getY();
             if(rect.contains(x,y)){
                  endPoint=pointB[i];
                  if(i==pointB.length-1&&endPoint.isHaveDisc()==false){
                     location=true;
                     break;
                  }
                   else if(i<pointB.length-1&&pointB[i+1].isHaveDisc()==true
                          &&endPoint.isHaveDisc()==false
                          &&pointB[i+1].getDiscOnPoint().getNumber()
                            >disc.getNumber()){
                     location=true;
                     break;
                  }             
              }
         }
         for(int i=0;i<pointC.length;i++){ 
             x=pointC[i].getX();
             y=pointC[i].getY();
             if(rect.contains(x,y)){
                  endPoint=pointC[i];
                  if(i==pointC.length-1&&endPoint.isHaveDisc()==false){
                     location=true;
                     break;
                  }
                  else if(i<pointC.length-1&&pointC[i+1].isHaveDisc()==true
                          &&endPoint.isHaveDisc()==false
                          &&pointC[i+1].getDiscOnPoint().getNumber()
                            >disc.getNumber()){
                     location=true;
                     break;
                  }            
             }        
        }
        if(endPoint!=null&&location==true){
            endPoint.putDisc(disc,con);
            startPoint.setHaveDisc(false);  
        }
        else
            startPoint.putDisc(disc,con);     
    }
    public void mouseEntered(MouseEvent e){}
    public void mouseExited(MouseEvent e){}
    public void mouseClicked(MouseEvent e){}
}