/*

 * Copyright (c) 2014, 2018, 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

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 */

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.image.BufferedImage;

import javax.swing.JCheckBox;

import javax.swing.JComponent;

import javax.swing.SwingUtilities;

import jdk.test.lib.Platform;

/* @test

 * @bug 8032667

 * @summary [macosx] Components cannot be rendered in HiDPI to BufferedImage

 * @library /test/lib

 * @build jdk.test.lib.Platform

 * @run main bug8032667_image_diff

 */

public class bug8032667_image_diff {

    static final int IMAGE_WIDTH = 130;

    static final int IMAGE_HEIGHT = 50;

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

        if (!Platform.isOSX()) {

            return;

        }

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override

            public void run() {

                JCheckBox checkBox = new JCheckBox();

                checkBox.setSelected(true);

                checkBox.setSize(new Dimension(IMAGE_WIDTH, IMAGE_HEIGHT));

                final BufferedImage image1 = getHiDPIImage(checkBox);

                final BufferedImage image2 = getScaledImage(checkBox);

                if(equal(image1, image2)){

                    throw new RuntimeException("2x image equals to non smooth image");

                }

            }

        });

    }

    static boolean equal(BufferedImage image1, BufferedImage image2) {

        int w = image1.getWidth();

        int h = image1.getHeight();

        if (w != image2.getWidth() || h != image2.getHeight()) {

            return false;

        }

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

            for (int j = 0; j < h; j++) {

                int color1 = image1.getRGB(i, j);

                int color2 = image2.getRGB(i, j);

                if (color1 != color2) {

                    return false;

                }

            }

        }

        return true;

    }

    static BufferedImage getHiDPIImage(JComponent component) {

        return getImage(component, 2, IMAGE_WIDTH, IMAGE_HEIGHT);

    }

    static BufferedImage getScaledImage(JComponent component) {

        Image image1x = getImage(component, 1, IMAGE_WIDTH, IMAGE_HEIGHT);

        final BufferedImage image2x = new BufferedImage(

                2 * IMAGE_WIDTH, 2 * IMAGE_HEIGHT, BufferedImage.TYPE_INT_ARGB);

        final Graphics g = image2x.getGraphics();

        ((Graphics2D) g).scale(2, 2);

        g.drawImage(image1x, 0, 0, null);

        g.dispose();

        return image2x;

    }

    static BufferedImage getImage(JComponent component, int scale, int width, int height) {

        final BufferedImage image = new BufferedImage(

                scale * width, scale * height, BufferedImage.TYPE_INT_ARGB);

        final Graphics g = image.getGraphics();

        ((Graphics2D) g).scale(scale, scale);

        component.paint(g);

        g.dispose();

        return image;

    }

}