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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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @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();
}
}
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