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/*
* Copyright (c) 2007, 2014, 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.
*/
import java.awt.*;
import java.awt.image.BufferedImage;
/*
* @test
* @summary Check that GraphicsEnvironment methods do not throw unexpected
* exceptions in headless mode
* @run main/othervm -Djava.awt.headless=true HeadlessGraphicsEnvironment
*/
public class HeadlessGraphicsEnvironment {
public static void main(String args[]) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
if (!GraphicsEnvironment.isHeadless())
throw new RuntimeException("GraphicsEnvironment.isHeadless says it's not headless mode when it is");
boolean exceptions = false;
try {
GraphicsDevice[] gdl = ge.getScreenDevices();
} catch (HeadlessException e) {
exceptions = true;
}
if (!exceptions)
throw new RuntimeException("HeadlessException did not occur when excepted");
exceptions = false;
try {
GraphicsDevice gdl = ge.getDefaultScreenDevice();
} catch (HeadlessException e) {
exceptions = true;
}
if (!exceptions)
throw new RuntimeException("HeadlessException did not occur when excepted");
Graphics2D gd = ge.createGraphics(new BufferedImage(100, 100, BufferedImage.TYPE_4BYTE_ABGR));
for (Font font : ge.getAllFonts()) {
for (float j = 8; j < 17; j++) {
Font f1 = font.deriveFont(Font.PLAIN, j);
Font f2 = font.deriveFont(Font.BOLD, j);
Font f3 = font.deriveFont(Font.ITALIC, j);
Font f4 = font.deriveFont(Font.BOLD | Font.ITALIC, j);
f1.hasUniformLineMetrics();
f2.hasUniformLineMetrics();
f3.hasUniformLineMetrics();
f4.hasUniformLineMetrics();
}
}
String[] fNames = ge.getAvailableFontFamilyNames();
}
}
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