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 * Copyright (c) 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.

 *

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 */

/*

 * @test    RotatedFontMetricsTest

 * @bug     8139178

 * @summary This test verifies that rotation does not affect font metrics.

 * @run     main RotatedFontMetricsTest

 */

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

public class RotatedFontMetricsTest {

    static final int FONT_SIZE = Integer.getInteger("font.size", 20);

    public static void main(String ... args) {

        Font font = new Font(Font.DIALOG, Font.PLAIN, FONT_SIZE);

        Graphics2D g2d = createGraphics();

        FontMetrics ref = null;

        RuntimeException failure = null;

        for (int a = 0; a < 360; a += 15) {

            Graphics2D g = (Graphics2D)g2d.create();

            g.rotate(Math.toRadians(a));

            FontMetrics m = g.getFontMetrics(font);

            g.dispose();

            boolean status = true;

            if (ref == null) {

                ref = m;

            } else {

                status = ref.getAscent() == m.getAscent() &&

                        ref.getDescent() == m.getDescent() &&

                        ref.getLeading() == m.getLeading() &&

                        ref.getMaxAdvance() == m.getMaxAdvance();

            }

            System.out.printf("Metrics a%d, d%d, l%d, m%d (%d) %s\n",

                    m.getAscent(), m.getDescent(), m.getLeading(), m.getMaxAdvance(),

                    (int)a, status ? "OK" : "FAIL");

            if (!status && failure == null) {

                failure = new RuntimeException("Font metrics differ for angle " + a);

            }

        }

        if (failure != null) {

            throw failure;

        }

        System.out.println("done");

    }

    private static Graphics2D createGraphics() {

        BufferedImage dst = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);

        return dst.createGraphics();

    }

}