test/jdk/java/awt/DesktopProperties/FontSmoothing.java

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import java.awt.Frame;
import java.awt.Toolkit;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

/*
 * @test
 * @bug 4808569
 * @requires (os.family == "windows")
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @summary add desktop property for the Windows XP or later font smoothing settings
 * @run main/manual FontSmoothing
 */

public class FontSmoothing {

    private static final String PROP_NAME = "win.text.fontSmoothingType";

    public static void main(String[] args) throws Exception {
        String INSTRUCTIONS = """
                This test should be run on Windows XP or later.

                On Windows 11:
                1. Open Run dialog by typing 'run' in search bar.
                2. Type 'cttune' and press Ok.
                3. Uncheck the "Turn On ClearType" checkbox and follow next instructions on screen.
                4. Repeat Step 1-2.
                5. Check the "Turn On ClearType" checkbox and follow next instructions on screen.
                6. Take a look at the output window to determine if the test passed or failed.
                """;

        PassFailJFrame.builder()
                .title("FontSmoothing Test Instructions")
                .instructions(INSTRUCTIONS)
                .rows((int) INSTRUCTIONS.lines().count() + 2)
                .columns(40)
                .testTimeOut(5)
                .testUI(FontSmoothing::createUI)
                .logArea(8)
                .build()
                .awaitAndCheck();
    }

    private static Frame createUI() {
        Frame f = new Frame("FontSmoothing Test");
        f.setSize(50, 50);

        Object value = Toolkit.getDefaultToolkit().getDesktopProperty(PROP_NAME);
        PassFailJFrame.log("toolkit.getDesktopProperty: " + PROP_NAME + " = " + value + "\n");

        Toolkit.getDefaultToolkit().addPropertyChangeListener(PROP_NAME, new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent e) {
                PassFailJFrame.log("PropertyChangeEvent: " + e.getPropertyName() +
                        "\n   old value=" + e.getOldValue() +
                        "\n   new value=" + e.getNewValue());

                Integer value = (Integer) Toolkit.getDefaultToolkit().getDesktopProperty(PROP_NAME);
                PassFailJFrame.log("toolkit.getDesktopProperty:" + PROP_NAME + "=" + value);

                if (value.equals((Integer) e.getNewValue())) {
                    PassFailJFrame.log("test PASSED");
                } else {
                    PassFailJFrame.log("test FAILED");
                }
            }
        });
        return f;
    }
}