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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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.

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 */

import javax.swing.*;

import java.awt.*;

/*

 * @test

 * @bug 8164811

 * @key headful

 * @summary Check if a per-pixel translucent window shows only the area having

 *          opaque pixels

 * Test Description: Check if PERPIXEL_TRANSLUCENT Translucency type is supported

 *      on the current platform. Proceed if it is supported. Create a swing window

 *      with some swing components in it and a transparent background (alpha 0.0).

 *      Bring this window on top of a known background. Do this test for JFrame,

 *      JWindow and JDialog

 * Expected Result: Only the components present in the window must be shown. Other

 *      areas of the window must be transparent so that the background shows

 * @author mrkam

 * @library /lib/client

 * @build Common ExtendedRobot

 * @run main PerPixelTranslucentSwing

 * @run main/othervm -Dsun.java2d.uiScale=1.5 PerPixelTranslucentSwing

 */

public class PerPixelTranslucentSwing extends Common {

    JButton north;

    public static void main(String[] ignored) throws Exception {

        FG_COLOR = new Color(200, 0, 0, 0);

        if (checkTranslucencyMode(GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSLUCENT))

            for (Class<Window> windowClass: WINDOWS_TO_TEST)

                new PerPixelTranslucentSwing(windowClass).doTest();

    }

    public PerPixelTranslucentSwing(Class windowClass) throws Exception {

        super(windowClass);

    }

    @Override

    public void createSwingComponents() {

        Container contentPane = RootPaneContainer.class.cast(window).getContentPane();

        BorderLayout bl = new BorderLayout(10, 5);

        contentPane.setLayout(bl);

        north = new JButton("North");

        contentPane.add(north, BorderLayout.NORTH);

        JList center = new JList(new String[] {"Center"});

        contentPane.add(center, BorderLayout.CENTER);

        JTextField south = new JTextField("South");

        contentPane.add(south, BorderLayout.SOUTH);

        window.pack();

        window.setVisible(true);

        north.requestFocus();

    }

    @Override

    public void doTest() throws Exception {

        robot.waitForIdle(delay);

        // Check for background translucency

        Rectangle bounds = north.getBounds();

        Point loc = north.getLocationOnScreen();

        Color color = robot.getPixelColor(loc.x + bounds.width / 2, loc.y + bounds.height + 3);

        System.out.println(color);

        if (BG_COLOR.getRGB() != color.getRGB())

            throw new RuntimeException("Background is not translucent (" + color + ")");

        EventQueue.invokeAndWait(this::dispose);

    }

}