mapperclientapplet.java

实现网络GPS定位车辆的位置

                  }
          }


/*//////////////////////////////////////////////////////////////////////////////////////////////////
连接servelet得到初始url
///////////////////////////////////////////////////////////////////////////////////////////////////*/

         void initMap()
         {
                  try
                  {
                           String url = m_servletName + "?init=true&m_Width=" + MapPicWidth+"&m_Height=" + MapPicHeigth;
                            mapServer = new URL(url);
                           //System.out.println(url);
                           URLConnection s = mapServer.openConnection();
                           in = new BufferedReader(new InputStreamReader(s.getInputStream()));
                           String inputLine=in.readLine();
                           if (inputLine != null)
                           {
                                    m_sessionURL=inputLine;
                                    //System.out.println("Received: "+inputLine);

                           }
                           //in.close();
                  }
                  catch (Exception e)
                  {
                           e.printStackTrace();
                  }
         }
/*//////////////////////////////////////////////////////////////////////////////////////////////////
建立地图画布
///////////////////////////////////////////////////////////////////////////////////////////////////*/
         class MCanvas extends Canvas//Panel
         {
           Image m_bufferedImage=null;

           void setImage(Image i)
           {
                     m_bufferedImage = i;
           }

           public void paint(Graphics g)
           {
                      if (m_bufferedImage != null && g != null)
                     {
                        g.drawImage(m_bufferedImage, 0, 0, this);
                    }
           }

           public boolean imageUpdate(Image img, int infoflag, int x, int y,
                                      int width, int height)
           {
                    boolean result = true;

                    if ((infoflag & (ERROR | ABORT)) != 0)
                    {
                             result = false;
                    }
                    else
                    {
                             if ((infoflag & ALLBITS) != 0)
                             {
                                      result = false;
                              }
                             repaint();
                    }
                    return result;
           }

           public void update(Graphics g)
           {
               paint(g);
           }
/////////////////////////////////////////////////////////////////////////////
           Point startPoint = new Point(0,0);
           Point lastEndPoint = new Point(0,0);
           Point thisEndPoint = new Point(0,0);
           Point finalEndPoint = new Point(0,0);
           public String drawStyle = "rect";
           boolean figureState = false;
           boolean firstDraw = true;

           public MCanvas(){
             addMouseListener(new MouseAdapter(){
               public void mousePressed(MouseEvent e){
               Graphics g = getGraphics();

            g.setXORMode(getBackground());
            drawFigure(g,startPoint,finalEndPoint);
//            drawFigure(g,startPoint,finalEndPoint);
//            drawFigure(g,startPoint,finalEndPoint);
//            drawFigure(g,startPoint,thisEndPoint);
//            drawFigure(g,startPoint,thisEndPoint);

                 startPoint.x = lastEndPoint.x = thisEndPoint.x = e.getPoint().x;
                 startPoint.y = lastEndPoint.y = thisEndPoint.y = e.getPoint().y;
                 setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
                 figureState = true;
               }
               public void mouseReleased(MouseEvent e){
                 finalEndPoint.x = e.getPoint().x;
                 finalEndPoint.y = e.getPoint().y;
                 setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
                 Graphics g = getGraphics();
                 //g.setColor(Color.white);
                 g.setXORMode(getBackground());
                 if(firstDraw)
                 drawFigure(g,startPoint,finalEndPoint);
                 figureState = false;
                 firstDraw = true;
                 drawFigure(g,startPoint,thisEndPoint);
                 drawFigure(g,startPoint,thisEndPoint);
                 g.dispose();
               }
             });
             addMouseMotionListener(new MouseMotionAdapter(){
               public void mouseDragged(MouseEvent e){
                 Graphics g = getGraphics();
//                 g.setColor(Color.black);
                g.setXORMode(getBackground());
                 if(figureState){
                   lastEndPoint.x = thisEndPoint.x;
                   lastEndPoint.y = thisEndPoint.y;
                   thisEndPoint.x = e.getPoint().x;
                   thisEndPoint.y = e.getPoint().y;
                 }
                 if(firstDraw){
                   drawFigure(g,startPoint,thisEndPoint);
                   firstDraw = false;
                 }else {
                   drawFigure(g,startPoint,lastEndPoint);
                   drawFigure(g,startPoint,thisEndPoint);
                 }
                 g.dispose();
               }
             });

 ///////////////////////////////////////////////////////////////////
             addMouseListener(new MouseAdapter()
             {
                    int PointCount=0;
                     public void mouseClicked(MouseEvent e)
                     {
                       //System.out.println(m_tool);
                       if (m_tool == RULER_TOOL)
                       {
                         xOra = e.getX();
                         yOra = e.getY();
                         if (xTemp == 0 && yTemp == 0) {
                           xTemp = xOra;
                           yTemp = yOra;
                         }

                         PointCount++;

                         Graphics g = getGraphics();
                         g.setColor(Color.red);
                         g.drawLine(xTemp, yTemp, xOra, yOra);
                         //blndraw = true;
                         xTemp = xOra;
                         yTemp = yOra;
                         //repaint();


               if (e.getClickCount() == 2){

                      lCarStatus.setText("");
                       xTemp = 0;
                       yTemp = 0;
                       m_tool=PAN_TOOL;
                       dDistance=0;

                       double x=116.368855;
                       double y=39.179225;

                    try
                       {
                         String url = m_sessionURL;

                        // url += "?ptx=" + new Integer(x);
                         //url += "&pty=" + new Integer(y);
                         url += "?ptx=" + x;
                         url += "?pty=" + y;
                         url += "&tool=" + m_tool;



                       mapServer = new URL(url);
                      //System.out.println(url);
                      URLConnection s = mapServer.openConnection();
                      adjustMap(url);
                      //in = new BufferedReader(new InputStreamReader(s.getInputStream()));
                      //String inputLine=in.readLine();
                      //if (inputLine != null)
                      //{
                      //   m_sessionURL=inputLine;
                      //   System.out.println("Received: "+inputLine);

                      //}
                      //in.close();
                           }
                             catch (Exception ee)
                             {
                                      ee.printStackTrace();
                             }

                             //g.dispose();

                         }
                   }
               }
             });

           }


           public void setDrawStyle(String style){
             drawStyle = style;
           }

           public void drawFigure(Graphics g,Point start,Point end){
             if(drawStyle == "line"){
               g.drawLine(start.x,start.y,end.x,end.y);
             }else if(drawStyle == "rect"){
               int x = start.x ,y = start.y;
               if(end.x < start.x) x = end.x;
               if(end.y < start.y) y = end.y;
               g.drawRect(x,y,Math.abs(end.x - start.x),Math.abs(end.y - start.y));
             }else if(drawStyle == "oval"){
               int x = start.x ,y = start.y;
               if(end.x < start.x) x = end.x;
               if(end.y < start.y) y = end.y;
               g.drawOval(x,y,Math.abs(end.x-start.x),Math.abs(end.y - start.y));
             }
          }
         }
  //end of MCanvas
  //Component initialization
  private void jbInit() throws Exception {
     //////////////////////////////////////////////////////////
     //得到公司名称
////   companyName = this.getParameter("companyName");
//   companyid=this.getParameter("G_ID");
     companyid="300";
    System.out.println("the value of G_ID in applet: "+companyid);
  //  Ismanager=Integer.parseInt(this.getParameter("ismanager"));
    //companyName="现代";
//    Ismanager=1;
//    System.out.println("the value of Ismanager in applet: "+Ismanager);
//   user_cardid=this.getParameter("cardid");

//   user_cardid="11000001";
    System.out.println("the value of user_cardid in applet: "+user_cardid);
//   this.setLayout(null);
    this.setLayout(new BorderLayout());
    this.add(m_map,BorderLayout.CENTER);
    JPanel jp = new JPanel();
    jp.setLayout(new BorderLayout());
    lCarStatus.setBackground(Color.white);
    lCarStatus.setForeground(Color.blue);

    jp.add(lCarStatus);
    lCarStatus.setPreferredSize(new Dimension(0,20));
//   lCarStatus.setBounds(0,MapPicHeigth-100,MapPicWidth,20);
     initTable();
     jp.add(this.jScrollPaneRight,BorderLayout.SOUTH);
     jScrollPaneRight.setPreferredSize(new Dimension(0,80));
     jp.setPreferredSize(new Dimension(0,100));
     this.add(jp,BorderLayout.SOUTH);
     //jTable.setRowHeaderVisible(true) ;
     ////////////////////////////////////////////////////////////
     //得到车辆信息
     ////////////////////////////////////////////////////////////
     m_tool=INITCAR_TOOL;

     String url =m_sessionURL + "?tool=" + m_tool;
     //System.out.println("this is dapeng's"+url);
     GetCarInfo(url);
     m_tool=NO_TOOL;
     ////////////////////////////////////////////////////////////
     //得到车辆信息 end
     ////////////////////////////////////////////////////////////

//    jTable.updateUI();

//    jScrollPaneRight = new JScrollPane(jTable);
     jp.updateUI();
     //////////////////////////////////////////////////////////
       }

 private void initTable() {
      jScrollPaneRight.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
      jScrollPaneRight.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
      jScrollPaneRight.setViewportBorder(BorderFactory.createLineBorder(Color.black));
//    this.add(lCarStatus,null);
//    this.add(m_map, null);
      jTable.setBounds(0,MapPicHeigth-80,MapPicWidth,80);
//    this.add(jScrollPaneRight, null);
     //this.add(label1, null);

     jTable.setBorder(BorderFactory.createLoweredBevelBorder());
     jTable.setCellSelectionEnabled(true);
     //jTable.setEditable(false);
     jTable.setEnabled(true);
     jTable.setCellSelectionEnabled(false);
     //jdbTable.setTableHeader(null);
     //this.setBackground(Color.magenta);
     //this.add(jdbTable, null);
     jScrollPaneRight.setBounds(new Rectangle(0, 336, 622, 80));
     jScrollPaneRight.getViewport().add(jTable, null);
     //jdbTable.setBounds(0, 8, 100,140);
     //   String row[]=new String[11];
     //    jTable.setDataSet(null);
//    tableModel.addColumn("车辆ID");
      tableModel.addColumn("车主姓名");
      tableModel.addColumn("车辆牌照");//车辆牌照颜色 纬度 纬度
      tableModel.addColumn("SIM卡号");
      tableModel.addColumn("车辆类型");
      tableModel.addColumn("颜色");
      tableModel.addColumn("类型");
      tableModel.addColumn("纬度");
      tableModel.addColumn("经度");
//    tableModel.addColumn("定位状态");
//    tableModel.addColumn("GPS型号");
//    tableModel.addColumn("类型");
//    tableModel.addColumn("登记日期");
      tableModel.addColumn("速度");
      tableModel.addColumn("定位时间");
      //tableModel.addColumn("公司");
      //tableModel.addColumn(companyName);


      jTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS );

      jTable.setRowSelectionAllowed(true);
     jTable.setModel(tableModel);
   }
  //Start the applet
  public void start() {
  }
  //Stop the applet
  public void stop() {
  }
  //Destroy the applet
  public void destroy() {
  }
  //Get Applet information
  public String getAppletInfo() {
    return "Applet Information";
  }
  //Get parameter info
  public String[][] getParameterInfo() {
    return null;