deviceconnector.java

这是自定义工作流的图形定义部分

//package vlab; 在DesignPanel上显示的DeviceCarrier之间的连接线
import java.awt.image.*;
import java.awt.*;
import java.io.*;
import java.lang.*;
import java.lang.Cloneable;
/**
 * Title:        work-flow
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:      CSU
 * @author       smallbeetle
 * @version 1.0
 */

public class DeviceConnector implements Serializable, Cloneable{
  static int total = 0;
  private String name;
  private String inDeviceCarrierName=null;
  private String outDeviceCarrierName=null;
  private String outParameterName;
  private String inParameterName;
  private java.awt.Point[] handler = new java.awt.Point[4]; //控制调节每个connector上的四个拖拽点
  private boolean selected;
  private transient Object value;
  public  String connectorStatus = "";

  public DeviceConnector() {
    for (int i = 0; i < handler.length; i++){
      handler[i] = new Point(0, 0);
    }
    selected = true;
  }

  public Point getHandler(Point p){
    Rectangle rect;
    for (int i = 1; i <= 2; i++){
      rect = new Rectangle(handler[i].x -2  , handler[i].y -2 , 5, 5) ;
      if (rect.contains(p)){
        return handler[i];
      }
    }
    return null;
  }

  //why?
  public boolean in(Point p){
    for (int i = 0; i < handler.length-1; i++){
      if (Intersect.isIntersect(p, handler[i], handler[i+1])){
        return true;
      }
    }
    return false;
  }

  public static Point[] adjustConnector(DeviceConnector conn){
     Point[] handler2 = null;
     DeviceCarrier inDevice2 = null;;
     DeviceCarrier outDevice2 = null;
     outDevice2 = (DeviceCarrier) DesignPanel.carriers.get(conn.getOutDeviceCarrierName());
     inDevice2 = (DeviceCarrier) DesignPanel.carriers.get(conn.getInDeviceCarrierName());
     handler2 = conn.getHandler();
     if (outDevice2!=null && inDevice2!=outDevice2){
        int inDeviceHeight = inDevice2.getHeight();
        int outDeviceHeight = outDevice2.getHeight();
        Rectangle tempRec1 = new Rectangle(inDevice2.getX(),inDevice2.getY(),inDevice2.getWidth(),inDeviceHeight);
        Rectangle tempRec2 = new Rectangle(outDevice2.getX(),outDevice2.getY(),outDevice2.getWidth(),outDevice2.getHeight());
        while ((tempRec1.contains(handler2[0]) && tempRec1.contains(handler2[1]))||(tempRec2.contains(handler2[2]) && tempRec2.contains(handler2[3]))){
            if (DesignPanel.mouseOrient.equals("south")){
                int lowPoint = 0;
                if (outDevice2.getY()<inDevice2.getY()) lowPoint = outDevice2.getY()-outDeviceHeight;
                 else lowPoint = inDevice2.getY()-inDeviceHeight;
                handler2[0].y = inDevice2.getY();
                handler2[1].y = lowPoint;
                handler2[2].y = handler2[1].y;
                handler2[3].y = outDevice2.getY();
             }
            else{
                int highPoint = 0;
                if (outDevice2.getY()>inDevice2.getY()) highPoint = outDevice2.getY()+outDeviceHeight*2;
                 else highPoint = inDevice2.getY()+inDeviceHeight*2;
                handler2[0].y = inDevice2.getY()+inDevice2.getHeight();
                handler2[1].y = highPoint;
                handler2[2].y = handler2[1].y;
                handler2[3].y = outDevice2.getY()+outDevice2.getHeight();
             }
        }
     }
     return handler2;
  }
  //draw itself in g;
  public void draw(Graphics g){
    g.setColor(Color.black);
    for (int i = 0; i < handler.length-1; i ++){
      DeviceCarrier inDevice =(DeviceCarrier)  DesignPanel.carriers.get(this.getInDeviceCarrierName());
      DeviceCarrier outDevice =(DeviceCarrier)  DesignPanel.carriers.get(this.getOutDeviceCarrierName());
      if (i==0 && inDevice!=null){ //画线时进行分类,曲线上行，曲线下行
          int currentHeight = inDevice.getHeight();
          if (handler[0].y<inDevice.getY()+currentHeight/2 && handler[1].y>inDevice.getY()+currentHeight/2){
             handler[0].y=inDevice.getY()+currentHeight;

          }
          if (handler[0].y>inDevice.getY()+currentHeight/2 && handler[1].y<inDevice.getY()+currentHeight/2){
             handler[0].y=inDevice.getY();
          }
 //当曲线的转折点在模块之内时，进行处理

      }
      if (i==2 && outDevice!=null) {   //画线时进行分类,曲线上行，曲线下行
          if (handler[3].y<outDevice.getY()+outDevice.getHeight()/2 && handler[2].y>outDevice.getY()+outDevice.getHeight()/2){
            handler[3].y=outDevice.getY()+outDevice.getHeight();
          }
          if (handler[3].y>outDevice.getY()+outDevice.getHeight()/2 && handler[2].y<outDevice.getY()+outDevice.getHeight()/2){
            handler[3].y=outDevice.getY();
          }
      }
      handler = adjustConnector(this);
      if (i==3||i==0) {
          if (outDevice!=null && inDevice!=outDevice){
              if (handler[3].y<outDevice.getY() ) handler[3].y = outDevice.getY();
              if (handler[3].y>outDevice.getY() ) handler[3].y = outDevice.getY()+outDevice.getHeight();
          }
              if (handler[0].y<inDevice.getY() ) handler[0].y = inDevice.getY();
              if (handler[0].y>inDevice.getY() ) handler[0].y = inDevice.getY()+inDevice.getHeight();
      }
      g.drawLine(handler[i].x, handler[i].y, handler[i+1].x, handler[i+1].y);
    }

    //draw the arrow
    if (handler[2].y>handler[3].y) {
        g.drawLine(handler[handler.length-1].x-2, handler[handler.length-1].y+5,
               handler[handler.length-1].x, handler[handler.length-1].y);
        g.drawLine(handler[handler.length-1].x+2, handler[handler.length-1].y+5,
               handler[handler.length-1].x , handler[handler.length-1].y );
    }else{
        g.drawLine(handler[handler.length-1].x-2, handler[handler.length-1].y-5,
               handler[handler.length-1].x, handler[handler.length-1].y);
        g.drawLine(handler[handler.length-1].x+2, handler[handler.length-1].y-5,
               handler[handler.length-1].x , handler[handler.length-1].y );
    }
    //if selected, draw the handlers;
    if (selected){
      for (int i = 0; i < handler.length; i++){
        g.fillRect(handler[i].x-2, handler[i].y-2, 5, 5);
      }
    }
  }

  private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
    ois.defaultReadObject();
  }
  private void writeObject(ObjectOutputStream oos) throws IOException {
    oos.defaultWriteObject();
  }
  public void setName(String newName) {
    name = newName;
  }
  public String getName() {
    return name;
  }
  public void setInDeviceCarrierName(String newInDeviceCarrierName) {
    inDeviceCarrierName = newInDeviceCarrierName;
  }
  public String getInDeviceCarrierName() {
    return inDeviceCarrierName;
  }
  public void setOutDeviceCarrierName(String newOutDeviceCarrierName) {
    outDeviceCarrierName = newOutDeviceCarrierName;
  }
  public String getOutDeviceCarrierName() {
    return outDeviceCarrierName;
  }
  public void setOutParameterName(String newOutParameterName) {
    outParameterName = newOutParameterName;
  }
  public String getOutParameterName() {
    return outParameterName;
  }
  public void setInParameterName(String newInParameterName) {
    inParameterName = newInParameterName;
  }
  public String getInParameterName() {
    return inParameterName;
  }
  public void setHandler(java.awt.Point[] newHandler) {
    for (int i = 0; i < handler.length; i++){
      handler[i].x = newHandler[i].x ;
      handler[i].y = newHandler[i].y ;
    }
  }
  public java.awt.Point[] getHandler() {
    return handler;
  }
  public void setSelected(boolean newSelected) {
    selected = newSelected;
  }
  public boolean isSelected() {
    return selected;
  }
  public Object getValue(){
    return value;
  }
  public void setValue(Object newValue){
    this.value = newValue;
  }
  public Object Clone(){
    Object o = null;
    try{
      o = super.clone();
    }catch(CloneNotSupportedException e){
      e.printStackTrace();
    }
    return o;
  }
}