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