mycircleaction.java~34~

Java画版程序。......................要求变态。

package myshapeaction;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author
 * @version 1.0
 */
import java.awt.event.*;
//import java.util.*;
//import myframe.*;
import myshape.*;
import java.math.*;
import java.util.*;

public class MyCircleAction extends MyActionAdapter{
 // private boolean canDragged=false;
  private MyPoint centerPoint;
  private MyPoint endPoint=null;
  private MyCirlce circle;
  private boolean isSecondPoint=false;
  public MyCircleAction() {

  }

  public boolean mousePressed(MouseEvent e,Object o){
     // System.out.print("lkdflskfd");
       LinkedList l=(LinkedList)o;
    // if(startPoint==null)
        endPoint=centerPoint;
        if(l.isEmpty()){
          centerPoint=new MyPoint(e.getX(),e.getY());
        }
        else{
           centerPoint=((MyShape)l.getFirst()).getPoint();
        }
        centerPoint.setDefaultColor(MyShape.controlColor);
        centerPoint.setColor(startPoint.getDefaultColor());
        drawedItemList.add(centerPoint);
        if(!useDragged){
        if(isSecondPoint){
          circle=new MyCircle(endPoint,centerPoint);
          drawedItemList.add(circle);
          isSecondPoint=false;
        }
        else{
          isSecondPoint=true;
        }
        }
          return true;
  }


  public boolean mouseDragged(MouseEvent e,Object o){

    if(useDragged &&centerPoint!=null){
       endPoint=new MyPoint(e.getX(),e.getY());
       endPoint.setDefaultColor(MyShape.controlColor);
       endPoint.setColor(endPoint.getDefaultColor());
       if(!endPoint.nearTo(startPoint))
        {
         if(line!=null){
            drawedItemList.removeLast();
            drawedItemList.removeLast();
          }
         Circle=new MyCircle(startPoint,endPoint);
         drawedItemList.add(endPoint);
         drawedItemList.add(circle);
       }
    }
       return true;
  }
  public boolean mouseReleased(MouseEvent e,Object o){
   //  System.out.print("lkdflskfd");
      if(startPoint!=null ){
       /* if(endPoint==null){
          drawedItemList.removeLast();
        }
        else if(endPoint.nearTo(centerPoint)){
          drawedItemList.removeLast();
        }*/
      if(useDragged){
         centerPoint=null;
         endPoint=null;
      }
      circle=null;
    //  isSecondPoint=false;
     }
        return true;
  }
}