Universal VisioViewer组件接口程序示例

Universal VisioViewer组件接口程序示例

阮俊杰

    如本blog前两篇文章所述，我们所开发的“Universal VisioViewer”是一个Java组件，可以方便而容易地嵌入到任何基于Java的应用中，无论是本地应用还是Web应用。本文将公布一段Java源代码，以便例示在最为简单的情况下，即在程序中只显示Visio文档、而不具备任何应用逻辑的情况下，应用该组件的便利性。从程序中可见，所涉及的语句中有4、5行代码（以//!!!进行注释）。
    网友如有疑问，可通过[e-mail]进行联系。

package Nativeexam;

/**
 * <p>Title: VisioViewer test--Native application</p>
 * <p>Description: Show how to use the VisioCom.jar in a native application</p>
 * <p>Copyright: Copyright (c) 2007~2008</p>
 * <p>Company: Beijing Dawninfo Tech. Co., Ltd.</p>
 * @author Junjie Ruan
 * @version 1.0
 */

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;

import com.xckx.Visio.Interface.*;

public class PaintPanel extends JPanel {

  private AppFrame main = null;
  private Color bkColor;

  public PaintPanel(AppFrame mainf) {
    this.main = mainf;
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }

    //adding the VisioViewer object to the mouseEvent listener
    this.addMouseListener(main.getViewer());      //!!!very important way to integrate the controlling with VisioLib functions
    this.addMouseMotionListener(main.getViewer());//!!!very important way to integrate the controlling with VisioLib functions
    this.addMouseListener(main);
  }

  private void jbInit() throws Exception {
    bkColor = main.getPanelBkColor();            //!important to get&set the background of the Panel
    setBackground(bkColor);
    setForeground(bkColor);
  }

  public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D)g;
    g.setColor(bkColor);
    g.fillRect(0,0,this.getWidth(),this.getHeight());
    if (main.getViewer() != null)
      main.getViewer().draw(g2d);  //!!!invoke the LabelsDoc "draw" method to reveal the content of Visio Documents
  }

  public void update(Graphics g) {
    paint(g);
  }

  public void setBkColor(Color color) {
    bkColor = color;
    setBackground(bkColor);
    setForeground(bkColor);
    repaint();
  }

}