centerdialog.java

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package view.com;

import java.awt.Dimension;
import java.awt.Toolkit;

import javax.swing.JDialog;

/**
 * 
 * @author linfeng
 * 各种对话模式居中
 */
public class CenterDialog {
  
  /**
   * kit kit对象
   * screenSize 屏幕大小
   * dialogSize 对话框大小
   * screenWidth 屏幕宽度
   * screenHeight 屏幕高度
   * dialogWidth 对话框宽度
   * dialogHeight 对话框高度
   */
  private Toolkit kit;
  private Dimension screenSize;
  private Dimension dialogSize;
  private int screenWidth, screenHeight, dialogWidth, dialogHeight;

  
  /**
   * 获得与屏幕相对居中对话框
   * @param dialog 指定对话框
   * @param n 
   * @param bool 指定对话框类型
   * @return dialog 指定对话框
   */
  public JDialog getCenterDialog(JDialog dialog, double n, boolean bool) {
    dialog = new JDialog();
    dialog.setModal(bool);
    kit = kit.getDefaultToolkit();
    screenSize = kit.getScreenSize();
    screenWidth = (int) screenSize.getWidth();
    screenHeight = (int) screenSize.getHeight();
    dialog.setSize((int) (screenWidth / n), (int) (screenHeight / n));
    dialogSize = dialog.getSize();
    dialogWidth = dialogSize.width;
    dialogHeight = dialogSize.height;

    dialog.setLocation((screenWidth - dialogWidth) / 2,
        (screenHeight - dialogHeight) / 2);
    return dialog;
  }

  /**
   * 让指定的对话框居中
   * @param dialog 指定对话框类型
   * @param bool 指定对话框
   * @return dialog 指定对话框
   */
  public JDialog getCenterDialog(JDialog dialog, boolean bool) {
    dialog.setModal(bool);
    kit = kit.getDefaultToolkit();
    screenSize = kit.getScreenSize();
    screenWidth = (int) screenSize.getWidth();
    screenHeight = (int) screenSize.getHeight();
    dialogSize = dialog.getSize();
    dialogWidth = dialogSize.width;
    dialogHeight = dialogSize.height;
    dialog.setBounds((screenWidth - dialogWidth) / 2,
        (screenHeight - dialogHeight) / 2, dialogWidth, dialogHeight);
    return dialog;

  }
}