drawmodel.java

面向对象的设计思想

import java.awt.Shape;
import java.util.*;

public interface DrawModel {
	public static final int LIN=1;
	public static final int REC=2;
	public static final int CIR=3;
	public static final int SF=4;
	public static final int MOVE=5;
	public void addModelChangeListener(DrawCanvas canvas) ;
	
	public void setSel(int x);
	public void setP1(int x,int y);
	public int getP1x();
	public int getP1y();
	public ArrayList<SubShape> getShapes();
	public void addShapes(SubShape shape);
	public ArrayList<SubShape> deletShapes();
	public ArrayList<SubShape> add(int x1,int y1,int x2,int y2);
	
}