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