center Window On Parent - Android User Interface

Android examples for User Interface:Window

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Description

center Window On Parent

Demo Code

/*******************************************************************************
 *    Copyright 2012 - Joakim Erdfelt/*from   w ww.j a va  2  s .c  om*/
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *******************************************************************************/
//package com.java2s;
import java.awt.Component;

import java.awt.Dimension;

import java.awt.Point;

import java.awt.Toolkit;
import java.awt.Window;

public class Main {
    public static void centerWindowOnParent(Window win) {
        Component comp = win.getParent();
        if (comp == null) {
            centerWindowOnScreen(win);
            return;
        }

        win.setLocationRelativeTo(comp);
        Dimension compSize = comp.getSize();
        Point compCenter = new Point(compSize.width / 2,
                compSize.height / 2);
        Point winCenterRelative = new Point(win.getSize().width / 2,
                win.getSize().height / 2);
        win.setLocation((compCenter.x - winCenterRelative.x),
                (compCenter.y - winCenterRelative.y));
    }

    public static void centerWindowOnScreen(Window win) {
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension screenSize = tk.getScreenSize();
        Point screenCenter = new Point(screenSize.width / 2,
                screenSize.height / 2);
        Point winCenterRelative = new Point(win.getSize().width / 2,
                win.getSize().height / 2);
        win.setLocation((screenCenter.x - winCenterRelative.x),
                (screenCenter.y - winCenterRelative.y));
    }
}

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