1/*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23import java.awt.Dimension;
24import java.awt.EventQueue;
25import java.awt.Frame;
26import java.awt.Point;
27import java.awt.Robot;
28import java.awt.event.MouseEvent;
29import java.awt.event.MouseAdapter;
30import java.awt.event.WindowEvent;
31import java.awt.event.WindowAdapter;
32
33public class FrameBorderCounter {
34
35    private static Frame frame;
36    private static Frame background;
37    private static Dimension size;
38    private static Point location;
39    private static Point entered;
40
41    public static void main(String[] args) throws Exception {
42        final Robot robot = new Robot();
43        EventQueue.invokeAndWait(new Runnable() {
44            public void run() {
45                robot.mouseMove(0, 0);
46            }
47        });
48        EventQueue.invokeAndWait(new Runnable() {
49            public void run() {
50                background = new Frame();
51                background.setBounds(100, 100, 300, 300);
52                background.addMouseListener(new MouseAdapter() {
53                    @Override
54                    public void mouseEntered(MouseEvent e) {
55                        entered = e.getLocationOnScreen();
56                        System.err.println("[ENTERED] : " + entered);
57                    }
58                });
59                background.setVisible(true);
60            }
61        });
62        EventQueue.invokeAndWait(new Runnable() {
63            public void run() {
64                frame = new Frame("Frame");
65                frame.setBounds(200, 200, 100, 100);
66                frame.setVisible(true);
67            }
68        });
69        Thread.sleep(1000);
70        EventQueue.invokeAndWait(new Runnable() {
71            public void run() {
72                location = frame.getLocationOnScreen();
73                size = frame.getSize();
74            }
75        });
76        int out = 20;
77        for (int x = location.x + size.width - out; x <= location.x + size.width + out; ++x) {
78            robot.mouseMove(x, location.y + size.height / 2);
79            Thread.sleep(50);
80        }
81        System.err.println("[LOCATION] : " + location);
82        System.err.println("[SIZE] : " + size);
83        Thread.sleep(250);
84        int shift = entered.x - location.x - size.width - 1;
85        System.err.println("Done");
86        System.out.println(shift);
87        frame.dispose();
88        background.dispose();
89    }
90}
91