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AssoicatorLine.java in java_gui.rar

			
package com.sunking.tp.framework;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.geom.*;
import java.util.*;
/**
 * <p>Title: </p>
 * <p>Description: 连线</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author <a href="mailto:sunkingxie@hotmail.com">SunKing</a>
 * @version 1.0
 * @see Assoicator
 */
public class AssoicatorLine extends Line2D.Double implements java.io.Serializable{
    private static final long serialVersionUID = -3000000000000000003L;
	/**
	*连线的源和目录
	*/
    public JTPComponent source,dest;
	/**
	*连线类型
	*/
    private int associateType;
	/**
	*连线修饰器
	*/
    private Vector vecRenderer = new Vector();
    /**
     *
     * @param source 连线源
     * @param associator 连接器
     */
    public AssoicatorLine(JTPComponent source,Assoicator associator){
        dest = associator.getAssoicator();
        associateType = associator.getAssociateType();
        this.source = source;
        setLinePoints((Component)source,(Component)dest);
        addRenderer(new Arrow(this));
    }
    /**
     *取得连接源
     * @return
     */
    public JTPComponent getSource(){
        return source;
    }
    /**
     *取得连接目标
     * @return
     */
    public JTPComponent getDest(){
        return dest;
    }
    /**
     *取得连接类型
     * @return
     */
    public int getAssociateType(){
        return associateType;
    }
    /**
     *判断是否包含一个点,主要用于点击时的选取动作
     * @param p
     * @return
     */
    public boolean contains(Point2D p) {
        return contains((int)p.getX(),(int)p.getY());
    }
    public boolean contains(int x, int y)  {
        return insideSegment(x,y,(int)getX1(),(int)getY1(),(int)getX2(),(int)getY2());
    }
    protected boolean insideSegment(int x, int y, int x0, int y0, int x1, int y1) {
        if (x1 == x0)
            return (x == x0) && (y >= Math.min(y0,y1)) && (y <= Math.max(y0,y1));
        Rectangle bounds = new Rect			

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			... to be continued.

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