test/jdk/java/awt/Window/WindowSizeDifferentScreens/WindowSizeDifferentScreens.java

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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.awt.Color;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Window;

/**
 * @test
 * @key headful
 * @bug 8211999
 * @summary The test creates the packed/unpacked top level components on the
 *          different screens and compares their bounds
 * @run main/othervm WindowSizeDifferentScreens
 * @run main/othervm -Dsun.java2d.uiScale=1 WindowSizeDifferentScreens
 * @run main/othervm -Dsun.java2d.uiScale=1.25 WindowSizeDifferentScreens
 */
public final class WindowSizeDifferentScreens {

    public static void main(String[] args) throws Exception {
        test("window");
        test("dialog");
        test("frame");
    }

    private static void test(String top) throws Exception {
        var ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        Robot robot = new Robot();
        Window main = getTopLevel(top);
        try {
            main.setVisible(true);
            robot.waitForIdle();
            main.setSize(500, 500);
            robot.waitForIdle();
            for (GraphicsDevice gd : ge.getScreenDevices()) {
                Rectangle bounds = gd.getDefaultConfiguration().getBounds();
                Point point = bounds.getLocation();
                point.translate(100, 100);
                main.setLocation(point);
                main.setBackground(Color.RED);
                robot.waitForIdle();

                Window packed = getTopLevel(top);
                Window unpacked = getTopLevel(top);
                try {
                    packed.pack();
                    robot.waitForIdle();
                    packed.setBackground(Color.GREEN);
                    unpacked.setBackground(Color.BLUE);
                    packed.setSize(500, 500);
                    unpacked.setSize(500, 500);
                    packed.setLocation(point);
                    unpacked.setLocation(point);
                    robot.waitForIdle();
                    packed.setVisible(true);
                    unpacked.setVisible(true);
                    robot.waitForIdle();
                    Rectangle mBounds = main.getBounds();
                    Rectangle pBounds = packed.getBounds();
                    Rectangle uBounds = unpacked.getBounds();

                    if (!mBounds.equals(uBounds) ||
                            !mBounds.equals(pBounds)) {
                        System.err.println("Expected bounds: " + mBounds);
                        System.err.println("Actual unpacked: " + uBounds);
                        System.err.println("Actual packed: " + pBounds);
                        throw new RuntimeException();
                    }
                } finally {
                    packed.dispose();
                    unpacked.dispose();
                }
            }
        } finally {
            main.dispose();
        }
    }

    private static Window getTopLevel(String top) {
        return switch (top) {
            case "window" -> new Window(null);
            case "dialog" -> new Dialog((Dialog) null);
            case "frame" -> new Frame();
            default -> throw new IllegalArgumentException("Unexpected: " + top);
        };
    }
}