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