绘图程序

开发平台：

Java

MoveCmd.java：源码内容

							package cn.edu.nju.software.grapheditor.cmd;
import java.awt.Point;
import cn.edu.nju.software.grapheditor.Drawing;
import cn.edu.nju.software.grapheditor.shape.Shape;
public class MoveCmd extends Command{
	Shape s;
	boolean judge;
	double x1,y1,x2,y2;
	public void executePress(Point p, Drawing dwg) {
		s=dwg.getFrontmostContainer(p);
		if(s!=null){
			x1=p.getX();
		    y1=p.getY();
		    judge=true;
	}else
		    judge=false;
	}
	public void executeDrag(Point p, Drawing dwg) {
		if(judge==true){
			s.move((int)(p.getX()-x1),(int)(p.getY()-y1));
			x1=p.getX();
			y1=p.getY();		
	}
	}
}

						