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 /** 25 * @test 26 * @bug 8187957 27 * @summary Verifies Tab Size works correctly in JTextArea 28 * @key headful 29 * @run main TestTabSize 30 */ 31 32 import java.awt.geom.Rectangle2D; 33 import javax.swing.GroupLayout; 34 import javax.swing.JFrame; 35 import javax.swing.JScrollPane; 36 import javax.swing.JTextArea; 37 import javax.swing.SwingUtilities; 38 import javax.swing.text.BadLocationException; 39 import javax.swing.text.Caret; 40 41 public class TestTabSize { 42 private static JScrollPane jScrollPane1; 43 private static JTextArea jTextArea1; 44 private static JFrame f; 45 private static Rectangle2D rect; 46 private static Rectangle2D rect1; 47 private static boolean excpnthrown = false; 48 main(String args[])49 public static void main(String args[]) throws Exception { 50 51 SwingUtilities.invokeAndWait(() -> { 52 try { 53 jScrollPane1 = new javax.swing.JScrollPane(); 54 jTextArea1 = new javax.swing.JTextArea(); 55 jTextArea1.setTabSize(8); 56 f = new JFrame(); 57 58 jTextArea1.setFont(new java.awt.Font("Monospaced", 0, 10)); 59 String str = 60 "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!#\n" 61 + "! Some Text\t\t\t\t\t#"; 62 jTextArea1.setText(str); 63 jScrollPane1.setViewportView(jTextArea1); 64 65 GroupLayout layout = new javax.swing.GroupLayout(f.getContentPane()); 66 f.getContentPane().setLayout(layout); 67 layout.setHorizontalGroup( 68 layout.createParallelGroup( 69 javax.swing.GroupLayout.Alignment.LEADING) 70 .addGroup(layout.createSequentialGroup() 71 .addContainerGap() 72 .addComponent(jScrollPane1, 73 javax.swing.GroupLayout.DEFAULT_SIZE, 74 446, Short.MAX_VALUE) 75 .addContainerGap()) 76 ); 77 layout.setVerticalGroup( 78 layout.createParallelGroup( 79 javax.swing.GroupLayout.Alignment.LEADING) 80 .addGroup(layout.createSequentialGroup() 81 .addContainerGap() 82 .addComponent(jScrollPane1) 83 .addContainerGap()) 84 ); 85 86 f.pack(); 87 int first = str.indexOf("#"); 88 jTextArea1.setCaretPosition(first); 89 Caret caret = jTextArea1.getCaret(); 90 rect = jTextArea1.modelToView2D(caret.getDot()); 91 System.out.println("caret x position " + rect.getX()); 92 93 jTextArea1.setCaretPosition(str.indexOf("#", first+1)); 94 caret = jTextArea1.getCaret(); 95 rect1 = jTextArea1.modelToView2D(caret.getDot()); 96 System.out.println("2nd caret x position " + rect1.getX()); 97 98 } catch (BadLocationException ex) { 99 excpnthrown = true; 100 } finally { 101 if (f != null) { 102 f.dispose(); 103 } 104 } 105 }); 106 if (excpnthrown) { 107 throw new RuntimeException("BadLocationException thrown"); 108 } 109 if ((int)rect.getX() != (int)rect1.getX()) { 110 throw new RuntimeException("Tab width calculation wrong"); 111 } 112 } 113 } 114