1 /*
2 * Copyright (c) 2018, 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 8199441
26 * @key headful
27 * @summary Verifies caret position in multiline line-wrapped text component
28 * in hidpi mode should be in sync with mouse press position.
29 * @run main/othervm -Dsun.java2d.uiScale=1.5 TestCaretPosition
30 */
31
32 import javax.swing.JTextArea;
33 import javax.swing.JFrame;
34 import javax.swing.JScrollPane;
35 import javax.swing.SwingUtilities;
36 import javax.swing.text.BadLocationException;
37 import javax.swing.text.Caret;
38 import java.awt.Font;
39 import java.awt.BorderLayout;
40 import java.awt.Point;
41 import java.awt.Robot;
42 import java.awt.event.InputEvent;
43 import java.awt.event.MouseEvent;
44 import java.awt.event.MouseListener;
45 import java.awt.geom.Rectangle2D;
46
47 public class TestCaretPosition {
48 private static JTextArea jTextArea1;
49 private static JFrame f;
50
51 private static void createUI() {
52 jTextArea1 = new JTextArea(5, 80);
53 f = new JFrame();
54 jTextArea1.setFont(new java.awt.Font("Arial", Font.PLAIN, 12));
55
56 fillTextArea(jTextArea1);
57 jTextArea1.setLineWrap(true);
58 jTextArea1.addMouseListener(new MouseListener() {
59 @Override
60 public void mouseClicked(MouseEvent e) {}
61
62 @Override
63 public void mousePressed(MouseEvent e) {
64 try {
65 Caret caret = jTextArea1.getCaret();
66 Rectangle2D rect = jTextArea1.modelToView2D(caret.getDot());
67
68 if (Math.abs(e.getPoint().x - rect.getX()) > 5) {
69 System.out.println("mouse point " + e.getPoint());
70 System.out.println("caret position " + rect);
71 throw new RuntimeException(" Wrong caret position");
72 }
73 } catch (BadLocationException ex) {}
74 }
75
76 @Override
77 public void mouseReleased(MouseEvent e) {}
78
79 @Override
80 public void mouseEntered(MouseEvent e) {}
81
82 @Override
83 public void mouseExited(MouseEvent e) {}
84 });
85 f.add(new JScrollPane(jTextArea1), BorderLayout.CENTER);
86 f.pack();
87 f.setVisible(true);
88 }
89
90 public static void main(String args[]) throws Exception {
91 try {
92
93 SwingUtilities.invokeAndWait(() -> createUI());
94
95 Point p = jTextArea1.getLocationOnScreen();
96 Robot robot = new Robot();
97 robot.setAutoDelay(200);
98 robot.mouseMove(p.x+ 480, p.y+6);
99 robot.waitForIdle();
100 robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
101 robot.waitForIdle();
102 robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
103 robot.waitForIdle();
104 } finally {
105 SwingUtilities.invokeAndWait(() -> f.dispose());
106 }
107 }
108
109 private static void fillTextArea(JTextArea area) {
110 StringBuilder buf = new StringBuilder();
111
112 for (int i = 0; i < 3; i++) {
113 StringBuilder row = new StringBuilder();
114 for (int j = 0; j < 50; j++) {
115 row.append(j);
116 if (j % 5 == 0) {
117 row.append(" ");
118 }
119 }
120 buf.append(row).append(System.lineSeparator());
121 }
122 area.setText(buf.toString());
123 area.setCaretPosition(0);
124 }
125 }