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 * @key headful
27 * @bug 4697612 6244705
28 * @author Peter Zhelezniakov
29 * @library ../../regtesthelpers
30 * @build Util
31 * @run main bug4697612
32 */
33 import java.io.*;
34 import java.awt.*;
35 import java.awt.event.*;
36 import javax.swing.*;
37
38 import javax.swing.text.BadLocationException;
39 import sun.awt.SunToolkit;
40
41 public class bug4697612 {
42
43 static final int FRAME_WIDTH = 300;
44 static final int FRAME_HEIGHT = 300;
45 static final int FONT_HEIGHT = 16;
46 private static volatile int frameHeight;
47 private static volatile int fontHeight;
48 private static JFrame frame;
49 private static JTextArea text;
50 private static JScrollPane scroller;
51
52 public static void main(String[] args) throws Throwable {
53 SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
54 Robot robot = new Robot();
55 robot.setAutoDelay(100);
56
57 SwingUtilities.invokeAndWait(new Runnable() {
58
59 @Override
60 public void run() {
61 createAndShowGUI();
62 }
63 });
64
65 toolkit.realSync();
66
67 SwingUtilities.invokeAndWait(new Runnable() {
68
69 @Override
70 public void run() {
71 text.requestFocus();
72 }
73 });
74
75 toolkit.realSync();
76
77 // 4697612: pressing PgDn + PgUp should not alter caret position
78 Util.hitKeys(robot, KeyEvent.VK_HOME);
79 Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
80
81
82 int pos0 = getTextCaretPosition();
83 int caretHeight = getTextCaretHeight();
84 fontHeight = FONT_HEIGHT;
85
86 // iterate two times, for different (even and odd) font height
87 for (int i = 0; i < 2; i++) {
88
89 SwingUtilities.invokeAndWait(new Runnable() {
90
91 public void run() {
92 text.setFont(text.getFont().deriveFont(fontHeight));
93 }
94 });
95
96 frameHeight = FRAME_HEIGHT;
97
98 for (int j = 0; j < caretHeight; j++) {
99 SwingUtilities.invokeAndWait(new Runnable() {
100
101 public void run() {
102 frame.setSize(FRAME_WIDTH, frameHeight);
103 }
104 });
105
106 toolkit.realSync();
107
108 Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
109 Util.hitKeys(robot, KeyEvent.VK_PAGE_UP);
110 toolkit.realSync();
111
112 int pos = getTextCaretPosition();
113 if (pos0 != pos) {
114 throw new RuntimeException("Failed 4697612: PgDn & PgUp keys scroll by different amounts");
115 }
116 frameHeight++;
117 }
118 fontHeight++;
119 }
120
121
122 // 6244705: pressing PgDn at the very bottom should not scroll
123 LookAndFeel laf = UIManager.getLookAndFeel();
124 if (laf.getID().equals("Aqua")) {
125 Util.hitKeys(robot, KeyEvent.VK_END);
126 } else {
127 Util.hitKeys(robot, KeyEvent.VK_CONTROL, KeyEvent.VK_END);
128 }
129
130 toolkit.realSync();
131
132 pos0 = getScrollerViewPosition();
133 Util.hitKeys(robot, KeyEvent.VK_PAGE_DOWN);
134 toolkit.realSync();
135
136 int pos = getScrollerViewPosition();
137
138 if (pos0 != pos) {
139 throw new RuntimeException("Failed 6244705: PgDn at the bottom causes scrolling");
140 }
141 }
142
143 private static int getTextCaretPosition() throws Exception {
144 final int[] result = new int[1];
145 SwingUtilities.invokeAndWait(new Runnable() {
146
147 @Override
148 public void run() {
149 result[0] = text.getCaretPosition();
150 }
151 });
152
153 return result[0];
154 }
155
156 private static int getTextCaretHeight() throws Exception {
157 final int[] result = new int[1];
158 SwingUtilities.invokeAndWait(new Runnable() {
159
160 @Override
161 public void run() {
162 try {
163 int pos0 = text.getCaretPosition();
164 Rectangle dotBounds = text.modelToView(pos0);
165 result[0] = dotBounds.height;
166 } catch (BadLocationException ex) {
167 throw new RuntimeException(ex);
168 }
169 }
170 });
171
172 return result[0];
173 }
174
175 private static int getScrollerViewPosition() throws Exception {
176 final int[] result = new int[1];
177 SwingUtilities.invokeAndWait(new Runnable() {
178
179 @Override
180 public void run() {
181 result[0] = scroller.getViewport().getViewPosition().y;
182 }
183 });
184
185 return result[0];
186 }
187
188 private static void createAndShowGUI() {
189 frame = new JFrame();
190 frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
191 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
192
193 text = new JTextArea();
194 try {
195 InputStream is =
196 bug4697612.class.getResourceAsStream("bug4697612.txt");
197 text.read(new InputStreamReader(is), null);
198 } catch (IOException e) {
199 throw new Error(e);
200 }
201
202 scroller = new JScrollPane(text);
203
204 frame.getContentPane().add(scroller);
205
206 frame.pack();
207 frame.setVisible(true);
208 }
209 }