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/*
* Copyright (c) 2006, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6287895
* @requires (os.family == "linux")
* @summary Test cursor and selected text incorrectly colored in TextField
* @key headful
* @run main SelectionAndCaretColor
*/
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.TextArea;
import java.awt.TextComponent;
import java.awt.TextField;
import java.awt.image.BufferedImage;
public class SelectionAndCaretColor {
static TextField tf = new TextField(20);
static TextArea ta = new TextArea("", 1, 20, TextArea.SCROLLBARS_NONE);
static Robot r;
static Frame frame;
static volatile int flips;
public static void main(String[] args) throws Exception {
try {
frame = new Frame("Selection and Caret color test");
r = new Robot();
EventQueue.invokeAndWait(() -> {
frame.setLayout(new BorderLayout());
tf.setFont(new Font("Monospaced", Font.PLAIN, 15));
ta.setFont(new Font("Monospaced", Font.PLAIN, 15));
frame.add(tf, BorderLayout.NORTH);
frame.add(ta, BorderLayout.SOUTH);
frame.setSize(200, 200);
frame.setVisible(true);
});
r.waitForIdle();
r.delay(1000);
test(tf);
test(ta);
} finally {
EventQueue.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
private static int countFlips(TextComponent tc) {
int y = tc.getLocationOnScreen().y + tc.getHeight() / 2;
int x1 = tc.getLocationOnScreen().x + 5;
int x2 = tc.getLocationOnScreen().x + tc.getWidth() - 5;
int[] fb = {tc.getBackground().getRGB(), tc.getForeground().getRGB()};
int i = 0;
int flips = 0;
BufferedImage img = r.createScreenCapture(new Rectangle(x1, y, x2 - x1, 1));
for (int x = 0; x < x2 - x1; x++) {
int c = img.getRGB(x, 0);
if (c == fb[i]) {
;
} else if (c == fb[1 - i]) {
flips++;
i = 1 - i;
} else {
throw new RuntimeException("Invalid color detected: " +
Integer.toString(c, 16) + " instead of " +
Integer.toString(fb[i], 16));
}
}
return flips;
}
private static void test(TextComponent tc) throws Exception {
if (tc instanceof TextField) {
System.out.println("TextField testing ...");
} else if (tc instanceof TextArea) {
System.out.println("TextArea testing ...");
}
// now passing along the component's vertical center,
// skipping 5px from both sides,
// we should see bg - textcolor - bg - selcolor -
// seltextcolor - selcolor - bg
// that is bg-fg-bg-fg-bg-fg-bg, 6 flips
EventQueue.invokeAndWait(() -> {
tc.setForeground(Color.green);
tc.setBackground(Color.magenta);
tc.setText(" I I ");
tc.select(5, 10);
tc.requestFocus();
});
r.waitForIdle();
r.delay(200);
EventQueue.invokeAndWait(() -> {
flips = countFlips(tc);
});
if (flips != 6) {
throw new RuntimeException("Invalid number of flips: "
+ flips + " instead of 6");
}
EventQueue.invokeAndWait(() -> {
// same for caret: spaces in the tc, caret in the middle
// bg-fg-bg - 2 flips
tc.select(0, 0);
tc.setText(" ");
tc.setCaretPosition(5);
});
r.waitForIdle();
r.delay(200);
for (int i = 0; i < 10; i++) {
EventQueue.invokeAndWait(() -> {
flips = countFlips(tc);
});
if (flips == 2) {
break;
}
if (flips == 0) {
continue;
}
throw new RuntimeException("Invalid number of flips: "
+ flips + " instead of 2");
}
}
}
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