1 /*
2 * Copyright (c) 2012, 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 * @bug 4697612 6244705
27 * @author Peter Zhelezniakov
28 * @library ../../regtesthelpers
29 * @build Util
30 * @run main bug4697612
31 */
32 import java.io.*;
33 import java.awt.*;
34 import java.awt.event.*;
35 import javax.swing.*;
36
37 import javax.swing.text.BadLocationException;
38 import sun.awt.SunToolkit;
39
40 public class bug4697612 {
41
42 static final int FRAME_WIDTH = 300;
43 static final int FRAME_HEIGHT = 300;
44 static final int FONT_HEIGHT = 16;
45 private static volatile int frameHeight;
46 private static volatile int fontHeight;
47 private static JFrame frame;
48 private static JTextArea text;
49 private static JScrollPane scroller;
50
51 public static void main(String[] args) throws Throwable {
52 SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
53 Robot robot = new Robot();
54 robot.setAutoDelay(100);
55
56 SwingUtilities.invokeAndWait(new Runnable() {
57
58 @Override
59 public void run() {
60 createAndShowGUI();
61 }
62 });
63
64 toolkit.realSync();
65
66 SwingUtilities.invokeAndWait(new Runnable() {
67
68 @Override
69 public void run() {
70 text.requestFocus();
71 }
72 });
73
74 toolkit.realSync();
75
76 // 4697612: pressing PgDn + PgUp should not alter caret position
77 Util.hitKeys(robot, KeyEvent.VK_HOME);
78 Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
79
80
81 int pos0 = getTextCaretPosition();
82 int caretHeight = getTextCaretHeight();
83 fontHeight = FONT_HEIGHT;
84
85 // iterate two times, for different (even and odd) font height
86 for (int i = 0; i < 2; i++) {
87
88 SwingUtilities.invokeAndWait(new Runnable() {
89
90 public void run() {
91 text.setFont(text.getFont().deriveFont(fontHeight));
92 }
93 });
94
95 frameHeight = FRAME_HEIGHT;
96
97 for (int j = 0; j < caretHeight; j++) {
98 SwingUtilities.invokeAndWait(new Runnable() {
99
100 public void run() {
101 frame.setSize(FRAME_WIDTH, frameHeight);
102 }
103 });
104
105 toolkit.realSync();
106
107 Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
108 Util.hitKeys(robot, KeyEvent.VK_PAGE_UP);
109 toolkit.realSync();
110
111 int pos = getTextCaretPosition();
112 if (pos0 != pos) {
113 throw new RuntimeException("Failed 4697612: PgDn & PgUp keys scroll by different amounts");
114 }
115 frameHeight++;
116 }
117 fontHeight++;
118 }
119
120
121 // 6244705: pressing PgDn at the very bottom should not scroll
122 LookAndFeel laf = UIManager.getLookAndFeel();
123 if (laf.getID().equals("Aqua")) {
124 Util.hitKeys(robot, KeyEvent.VK_END);
125 } else {
126 Util.hitKeys(robot, KeyEvent.VK_CONTROL, KeyEvent.VK_END);
127 }
128
129 toolkit.realSync();
130
131 pos0 = getScrollerViewPosition();
132 Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
133 toolkit.realSync();
134
135 int pos = getScrollerViewPosition();
136
137 if (pos0 != pos) {
138 throw new RuntimeException("Failed 6244705: PgDn at the bottom causes scrolling");
139 }
140 }
141
142 private static int getTextCaretPosition() throws Exception {
143 final int[] result = new int[1];
144 SwingUtilities.invokeAndWait(new Runnable() {
145
146 @Override
147 public void run() {
148 result[0] = text.getCaretPosition();
149 }
150 });
151
152 return result[0];
153 }
154
155 private static int getTextCaretHeight() throws Exception {
156 final int[] result = new int[1];
157 SwingUtilities.invokeAndWait(new Runnable() {
158
159 @Override
160 public void run() {
161 try {
162 int pos0 = text.getCaretPosition();
163 Rectangle dotBounds = text.modelToView(pos0);
164 result[0] = dotBounds.height;
165 } catch (BadLocationException ex) {
166 throw new RuntimeException(ex);
167 }
168 }
169 });
170
171 return result[0];
172 }
173
174 private static int getScrollerViewPosition() throws Exception {
175 final int[] result = new int[1];
176 SwingUtilities.invokeAndWait(new Runnable() {
177
178 @Override
179 public void run() {
180 result[0] = scroller.getViewport().getViewPosition().y;
181 }
182 });
183
184 return result[0];
185 }
186
187 private static void createAndShowGUI() {
188 frame = new JFrame();
189 frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
190 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
191
192 text = new JTextArea();
193 try {
194 InputStream is =
195 bug4697612.class.getResourceAsStream("bug4697612.txt");
196 text.read(new InputStreamReader(is), null);
197 } catch (IOException e) {
198 throw new Error(e);
199 }
200
201 scroller = new JScrollPane(text);
202
203 frame.getContentPane().add(scroller);
204
205 frame.pack();
206 frame.setVisible(true);
207 }
208 }