windowutilities.java

说明： 1、里面有什么： 1.1、org.bouncycastle.*下的所有软件是bouncycastle组织开发的软件包 1.2、org.infosecurity.*下的软件包括

package org.infosecurity.cryptography;
/**
 * <p>Title: 中国信息安全组织--窗口管理工具 </p>
 * <p>Description: 中国信息安全组织--窗口管理工具 </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: 中信信息安全组织(CISO)</p>
 * @author 张荣华
 * @version 1.0.2003.0615
 */
import java.awt.Dimension;
import java.awt.Window;

public final class WindowUtilities {


    static public final int TOP    = 0;
    static public final int BOTTOM = 1;
    static public final int CENTER = 2;
    static public final int LEFT   = 3;
    static public final int RIGHT  = 4;

    /**
     * 定位窗口
     * @param w 容器实例
     * @param x 水平位置
     * @param y 垂直位置
     */
    static public void positionWindowOnScreen(Window w, int x, int y) {
        Dimension scrn = w.getToolkit().getScreenSize();
        Dimension win  = w.getSize();
        int nx = 0;
        int ny = 0;
        switch(x) {
            case LEFT:   nx = 0; break;
            case CENTER: nx = (int)((scrn.width-win.width)/2); break;
            case RIGHT:  nx = (int)(scrn.width-win.width); break;
        }
        switch(y) {
            case TOP:    ny = 0; break;
            case CENTER: ny = (int)((scrn.height-win.height)/2); break;
            case BOTTOM: ny = (int)(scrn.height-win.height); break;
        }
        w.setLocation(nx,ny);
    }
    /**
     * 居中窗口
     * @param w 窗口实例
     */
    static public final void centerWindowOnScreen(Window w)
    {
        positionWindowOnScreen(w, CENTER, CENTER);
    }
}