pantool.java

一个很有特点的地图平台,可以以动画方试展现电子地图,有拉近,拉远,滑动功能,最主要的是它是一个地图维护台,处理地图到数据库的数据导入

package mapcenter.maptools;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import mapcenter.service.*;

public class PanTool extends MapTool{
  private static final Log log = LogFactory.getLog("WebGIS");
  private int x1,y1,x2,y2;
  private boolean draggFlag = false;

  public PanTool() {
    super("/image/pan1.gif","/image/pan2.gif","平移","平移工具",'O');
    ImageIcon icon = new ImageIcon(getClass().getResource("/image/pan.gif"));
    Cursor cursor = Toolkit.getDefaultToolkit().createCustomCursor(icon.getImage(),new Point(0,0),"漫游");
    super.cursor = cursor;
  }

  public void actionPerformed(ActionEvent evt) {
    super.actionPerformed(evt);
  }
  //============= MouseListener接口实现 =============
  public void mouseEntered(MapMouse evt) {}
  public void mouseExited(MapMouse evt) {}

  public void mousePressed(MapMouse evt) {
    x1 = evt.getX();
    y1 = evt.getY();
  }

  public void mouseDragged(MapMouse evt) {
    x2 = evt.getX();
    y2 = evt.getY();
    Image image = mapView.getMapHandle().getImg();
    Image buffimg = mapView.getBuffImg();
    Graphics buffg = buffimg.getGraphics();
    int w = mapView.getWidth();
    int h = mapView.getHeight();
    int marginH = (image.getWidth(null) - w)/2;
    int marginV = (image.getHeight(null) - h)/2;
    buffg.clearRect(0, 0, w, h);
    buffg.drawImage(image, x2-x1-marginH, y2-y1-marginV, null);
    mapView.getGraphics().drawImage(buffimg, 0, 0, null);
    draggFlag = true;
  }

  public void mouseReleased(MapMouse evt) {
    try{
      Image renderImage = mapView.getMapHandle().getImg();
      double mapWidth = renderImage.getWidth(null);
      double mapHeight = renderImage.getHeight(null);
      double containW = mapView.getWidth();
      double containH = mapView.getHeight();
      double marginHor = (mapWidth - containW) / 2;
      double marginVer = (mapHeight - containH) / 2;

      if(draggFlag == true){
        mapView.getMapHandle().panMap(x2-x1,y2-y1);
      }else{
        //mapView.getMapHandle().panMap(containW/2,0);
        //zoomMoveing(marginHor,mapHeight/2,1);
      }
      mapView.renderMap();
      draggFlag = false;
    }catch(Exception ee){log.error(ee);}
  }

  public void mouseMoved(MapMouse evt) {}
  public void mouseClicked(MapMouse evt) {}
  //============= KeyListener接口实现 =============
  public void keyTyped(KeyEvent evt) {}
  public void keyPressed(KeyEvent evt) {}
  public void keyReleased(KeyEvent evt) { }
  //============= MapPainter接口实现 ===============
  public void paintOnMap(Graphics g) { }
  //============= ToolTipTextSetter接口实现 ========
  public String getToolTipText(MapMouse evt) {return "平移";}

}