1 /*
2 * Copyright (c) 2017, 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 8187957
26 * @summary Verifies Tab Size works correctly in JTextArea
27 * @run main TestTabSize
28 */
29
30 import java.awt.geom.Rectangle2D;
31 import javax.swing.GroupLayout;
32 import javax.swing.JFrame;
33 import javax.swing.JScrollPane;
34 import javax.swing.JTextArea;
35 import javax.swing.SwingUtilities;
36 import javax.swing.text.BadLocationException;
37 import javax.swing.text.Caret;
38
39 public class TestTabSize {
40 private static JScrollPane jScrollPane1;
41 private static JTextArea jTextArea1;
42 private static JFrame f;
43 private static Rectangle2D rect;
44 private static Rectangle2D rect1;
45 private static boolean excpnthrown = false;
46
47 public static void main(String args[]) throws Exception {
48
49 SwingUtilities.invokeAndWait(() -> {
50 try {
51 jScrollPane1 = new javax.swing.JScrollPane();
52 jTextArea1 = new javax.swing.JTextArea();
53 jTextArea1.setTabSize(8);
54 f = new JFrame();
55
56 jTextArea1.setFont(new java.awt.Font("Monospaced", 0, 10));
57 String str =
58 "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!#\n"
59 + "! Some Text\t\t\t\t\t#";
60 jTextArea1.setText(str);
61 jScrollPane1.setViewportView(jTextArea1);
62
63 GroupLayout layout = new javax.swing.GroupLayout(f.getContentPane());
64 f.getContentPane().setLayout(layout);
65 layout.setHorizontalGroup(
66 layout.createParallelGroup(
67 javax.swing.GroupLayout.Alignment.LEADING)
68 .addGroup(layout.createSequentialGroup()
69 .addContainerGap()
70 .addComponent(jScrollPane1,
71 javax.swing.GroupLayout.DEFAULT_SIZE,
72 446, Short.MAX_VALUE)
73 .addContainerGap())
74 );
75 layout.setVerticalGroup(
76 layout.createParallelGroup(
77 javax.swing.GroupLayout.Alignment.LEADING)
78 .addGroup(layout.createSequentialGroup()
79 .addContainerGap()
80 .addComponent(jScrollPane1)
81 .addContainerGap())
82 );
83
84 f.pack();
85 int first = str.indexOf("#");
86 jTextArea1.setCaretPosition(first);
87 Caret caret = jTextArea1.getCaret();
88 rect = jTextArea1.modelToView2D(caret.getDot());
89 System.out.println("caret x position " + rect.getX());
90
91 jTextArea1.setCaretPosition(str.indexOf("#", first+1));
92 caret = jTextArea1.getCaret();
93 rect1 = jTextArea1.modelToView2D(caret.getDot());
94 System.out.println("2nd caret x position " + rect1.getX());
95
96 } catch (BadLocationException ex) {
97 excpnthrown = true;
98 } finally {
99 f.dispose();
100 }
101 });
102 if (excpnthrown) {
103 throw new RuntimeException("BadLocationException thrown");
104 }
105 if ((int)rect.getX() != (int)rect1.getX()) {
106 throw new RuntimeException("Tab width calculation wrong");
107 }
108 }
109 }