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96 lines
3.3 KiB
Java
96 lines
3.3 KiB
Java
/*
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* Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.font;
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import java.awt.AWTError;
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import java.awt.Font;
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import java.awt.GraphicsEnvironment;
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import java.awt.Toolkit;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import sun.security.action.GetPropertyAction;
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/**
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* Factory class used to retrieve a valid FontManager instance for the current
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* platform.
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*
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* A default implementation is given for Linux, Solaris and Windows.
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* You can alter the behaviour of the {@link #getInstance()} method by setting
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* the {@code sun.font.fontmanager} property. For example:
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* {@code sun.font.fontmanager=sun.awt.X11FontManager}
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*/
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public final class FontManagerFactory {
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/** Our singleton instance. */
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private static FontManager instance = null;
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private static final String DEFAULT_CLASS;
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static {
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if (FontUtilities.isWindows) {
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DEFAULT_CLASS = "sun.awt.Win32FontManager";
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} else if (FontUtilities.isMacOSX) {
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DEFAULT_CLASS = "sun.font.CFontManager";
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} else {
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DEFAULT_CLASS = "sun.awt.X11FontManager";
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}
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}
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/**
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* Get a valid FontManager implementation for the current platform.
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*
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* @return a valid FontManager instance for the current platform
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*/
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public static synchronized FontManager getInstance() {
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if (instance != null) {
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return instance;
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}
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AccessController.doPrivileged(new PrivilegedAction<Object>() {
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public Object run() {
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try {
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String fmClassName =
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System.getProperty("sun.font.fontmanager",
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DEFAULT_CLASS);
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ClassLoader cl = ClassLoader.getSystemClassLoader();
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Class<?> fmClass = Class.forName(fmClassName, true, cl);
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instance =
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(FontManager) fmClass.getDeclaredConstructor().newInstance();
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} catch (ReflectiveOperationException ex) {
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throw new InternalError(ex);
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}
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return null;
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}
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});
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return instance;
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}
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}
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