1 /*
2 * Copyright (c) 2015, 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 */
23
24 /*
25 * @test
26 * @key headful
27 * @bug 8077409
28 * @summary Drawing deviates when validate() is invoked on java.awt.ScrollPane
29 * @author mikhail.cherkasov@oracle.com
30 * @run main bug8077409Test
31 */
32
33
34 import java.awt.*;
35 import java.awt.event.*;
36
37 public class bug8077409Test extends Frame {
38 ScrollPane pane;
39 MyCanvas myCanvas;
40
41 class MyCanvas extends Canvas {
42 public Dimension getPreferredSize() {
43 return new Dimension(400, 800);
44 }
45
46 public void paint(Graphics g) {
47 g.setColor(Color.BLACK);
48 g.drawLine(0, 0, 399, 0);
49 g.setColor(Color.RED);
50 g.drawLine(0, 1, 399, 1);
51 g.setColor(Color.BLUE);
52 g.drawLine(0, 2, 399, 2);
53 g.setColor(Color.GREEN);
54 g.drawLine(0, 3, 399, 3);
55 }
56
57 }
58
59 public bug8077409Test() {
60 super();
61 setLayout(new BorderLayout());
62 pane = new ScrollPane();
63
64 myCanvas = new MyCanvas();
65 pane.add(myCanvas);
66
67 add(pane, BorderLayout.CENTER);
68 setSize(320, 480);
69
70 }
71
72 @Override
73 protected void processKeyEvent(KeyEvent e) {
74 super.processKeyEvent(e);
75
76 }
77
78 public static void main(String[] args) throws AWTException, InterruptedException {
79 final bug8077409Test obj = new bug8077409Test();
80 obj.setVisible(true);
81 Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
82 @Override
83 public void eventDispatched(AWTEvent e) {
84 KeyEvent keyEvent = (KeyEvent) e;
85 if(keyEvent.getID() == KeyEvent.KEY_RELEASED) {
86 if (keyEvent.getKeyCode() == KeyEvent.VK_1) {
87 System.out.println(obj.pane.toString());
88 System.out.println("obj.myCanvas.pos: " + obj.myCanvas.getBounds());
89 System.out.println(obj.myCanvas.toString());
90 } else if (keyEvent.getKeyCode() == KeyEvent.VK_2) {
91 obj.repaint();
92 } else if (keyEvent.getKeyCode() == KeyEvent.VK_DOWN) {
93 Point scrollPosition = obj.pane.getScrollPosition();
94 scrollPosition.translate(0, 1);
95 obj.pane.setScrollPosition(scrollPosition);
96 } else if (keyEvent.getKeyCode() == KeyEvent.VK_UP) {
97 Point scrollPosition = obj.pane.getScrollPosition();
98 scrollPosition.translate(0, -1);
99 obj.pane.setScrollPosition(scrollPosition);
100 } else if (keyEvent.getKeyCode() == KeyEvent.VK_SPACE) {
101 obj.pane.validate();
102 }
103 }
104 }
105 }, AWTEvent.KEY_EVENT_MASK);
106 Point scrollPosition = obj.pane.getScrollPosition();
107 scrollPosition.translate(0, 1);
108 obj.pane.setScrollPosition(scrollPosition);
109
110 int y = obj.pane.getComponent(0).getLocation().y;
111 obj.pane.validate();
112 if(y != obj.pane.getComponent(0).getLocation().y){
113 throw new RuntimeException("Wrong position of component in ScrollPane");
114 }
115 }
116
117 }