1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.text;
  27 
  28 import javafx.scene.text.Font;
  29 
  30 /**
  31  * Used to access internal methods of Font.
  32  */
  33 public class FontHelper {
  34 
  35     private static FontAccessor fontAccessor;
  36 
  37     static {
  38         forceInit(Font.class);
  39     }
  40 
  41     private FontHelper() {
  42     }
  43 
  44     public static Object getNativeFont(Font font) {
  45         return fontAccessor.getNativeFont(font);
  46     }
  47 
  48     public static void setNativeFont(Font font, Object f, String nam,
  49             String fam, String styl) {
  50         fontAccessor.setNativeFont(font, f, nam, fam, styl);
  51     }
  52 
  53     public static Font nativeFont(Object f, String name, String family,
  54                                        String style, double size) {
  55         return fontAccessor.nativeFont(f, name, family, style, size);
  56     }
  57 
  58     public static void setFontAccessor(final FontAccessor newAccessor) {
  59         if (fontAccessor != null) {
  60             throw new IllegalStateException();
  61         }
  62 
  63         fontAccessor = newAccessor;
  64     }
  65 
  66     public interface FontAccessor {
  67         Object getNativeFont(Font font);
  68         void setNativeFont(Font font, Object f, String nam, String fam, String styl);
  69         Font nativeFont(Object f, String name, String family, String style, double size);
  70     }
  71 
  72     private static void forceInit(final Class<?> classToInit) {
  73         try {
  74             Class.forName(classToInit.getName(), true,
  75                     classToInit.getClassLoader());
  76         } catch (final ClassNotFoundException e) {
  77             throw new AssertionError(e);  // Can't happen
  78         }
  79     }
  80 }