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 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * 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 java.awt.*;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

/*

 * @test

 * @summary Check if a Choice present in a window set with opacity less than 1.0

 *          shows a translucent drop down

 *

 * Test Description: Check if TRANSLUCENT Translucency type is supported on the

 *      current platform. Proceed if supported. Show a window which contains an

 *      awt Choice and set with opacity less than 1.0. Another Window having a

 *      canvas component drawn with an image can be used as the background for

 *      the test window. Click on the ComboBox to show the drop down. Check if

 *      the drop down appears translucent. Repeat this for Window, Dialog and

 *      Frame.

 * Expected Result: If TRANSLUCENT Translucency type is supported, the drop down

 *      should appear translucent.

 *

 * @author mrkam

 * @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)

 * @library ../../../../lib/testlibrary

 * @build Common ExtendedRobot

 * @run main TranslucentChoice

 */

public class TranslucentChoice extends Common {

    Choice south;

    Component center;

    Component north;

    volatile int clicked;

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

        if (checkTranslucencyMode(GraphicsDevice.WindowTranslucency.TRANSLUCENT))

            for (Class<Window> windowClass: WINDOWS_TO_TEST){

                new TranslucentChoice(windowClass).doTest();

            }

    }

    public TranslucentChoice(Class windowClass) throws Exception {

        super(windowClass);

    }

    @Override

    public void initBackgroundFrame() {

        super.initBackgroundFrame();

        background.addMouseListener(new MouseAdapter() {

            @Override

            public void mouseClicked(MouseEvent e) {

                clicked |= 1 << 0;

            }

        });

    }

    @Override

    public void initGUI() {

        if (windowClass.equals(Frame.class)) {

            window = new Frame();

            ((Frame) window).setUndecorated(true);

        } else  if (windowClass.equals(Dialog.class)) {

            window = new Dialog(background);

            ((Dialog) window).setUndecorated(true);

        } else {

            window = new Window(background);

        }

        window.setBackground(FG_COLOR);

        north = new Button("north");

        window.add(north, BorderLayout.NORTH);

        center = new List(5);

        window.add(center, BorderLayout.CENTER);

        Choice choice = new Choice();

        for(int i = 0; i < 20; i++) {

            choice.add("item " + i);

        }

        south = choice;

        south.addMouseListener(new MouseAdapter() {

            @Override

            public void mouseClicked(MouseEvent e) {

                clicked |= 1 << 1;

            }

        });

        window.add(south, BorderLayout.SOUTH);

        window.setAlwaysOnTop(true);

        window.setOpacity(0.3f);

        window.setLocation(2 * dl, 2 * dl);

        window.setSize(255, 255);

        window.pack();

        window.setVisible(true);

        System.out.println("Checking " + window.getClass().getName() + "...");

    }

    @Override

    public void doTest() throws Exception {

        Point ls = window.getLocationOnScreen();

        clicked = 0;

        checkClick(ls.x + window.getWidth() / 2, ls.y - 5, 0);

        robot.waitForIdle(2000);

        ls = south.getLocationOnScreen();

        Point p1 = new Point((int) (ls.x + south.getWidth() * 0.75), ls.y + south.getHeight() * 3);

        Point p2 = new Point((int) (ls.x + south.getWidth() * 0.75), ls.y - south.getHeight() * 2);

        Color c1 = robot.getPixelColor(p1.x, p1.y);

        Color c2 = robot.getPixelColor(p2.x, p2.y);

        checkClick(ls.x + south.getWidth() / 2, ls.y + south.getHeight() / 2, 1);

        robot.waitForIdle(2000);

        Color c1b = robot.getPixelColor(p1.x, p1.y);

        Color c2b = robot.getPixelColor(p2.x, p2.y);

        if (!aproximatelyEquals(c1, c1b) && !aproximatelyEquals(south.getBackground(), c1b))

            throw new RuntimeException("Check for opaque drop down failed. Before click: " + c1 + ", after click: " + c1b + ", expected is " + south.getBackground());

        if (!aproximatelyEquals(c2,c2b) && !aproximatelyEquals(south.getBackground(), c2b))

            throw new RuntimeException("Check for opaque drop down failed. Before click: " + c2 + ", after click: " + c2b + ", expected is " + south.getBackground());

        EventQueue.invokeAndWait(() -> {

            background.dispose();

            window.dispose();

        });

        robot.waitForIdle();

    }

    boolean aproximatelyEquals(Color c1, Color c2) {

        return ((Math.abs(c1.getRed()-c2.getRed())/256.0 +

                Math.abs(c1.getGreen()-c2.getGreen())/256.0 +

                Math.abs(c1.getBlue()-c2.getBlue())/256.0)) / 3 < 0.02;

    }

    @Override

    public void applyShape() { }

    void checkClick(int x, int y, int flag) throws Exception {

        System.out.println("Trying to click point " + x + ", " + y + ", looking for " + flag + " flag to trigger.");

        clicked = 0;

        robot.mouseMove(x, y);

        robot.click();

        for (int i = 0; i < 100; i++)

            if ((clicked & (1 << flag)) == 0)

                robot.delay(50);

            else

                break;

        if ((clicked & (1 << flag)) == 0)

            throw new RuntimeException("FAIL: Flag " + flag + " is not triggered for point " + x + ", " + y + "!");

    }

}