/* * Copyright (c) 2003, 2006, 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.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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. */ package sun.font; /* * NB the versions that take a char as an int are used by the opentype * layout engine. If that remains in native these methods may not be * needed in the Java class. */public abstract class CharToGlyphMapper {     public static final int HI_SURROGATE_START = 0xD800;    public static final int HI_SURROGATE_END = 0xDBFF;    public static final int LO_SURROGATE_START = 0xDC00;    public static final int LO_SURROGATE_END = 0xDFFF;     public static final int UNINITIALIZED_GLYPH = -1;    public static final int INVISIBLE_GLYPH_ID = 0xffff;    public static final int INVISIBLE_GLYPHS   = 0xfffe; // and above     protected int missingGlyph = CharToGlyphMapper.UNINITIALIZED_GLYPH;     public int getMissingGlyphCode() {        return missingGlyph;    }     /* Default implementations of these methods may be overridden by     * subclasses which have special requirements or optimisations     */     public boolean canDisplay(char ch) {        int glyph = charToGlyph(ch);        return glyph != missingGlyph;    }     public boolean canDisplay(int cp) {        int glyph = charToGlyph(cp);        return glyph != missingGlyph;    }     public int charToGlyph(char unicode) {        char[] chars = new char[1];        int[] glyphs = new int[1];        chars[0] = unicode;        charsToGlyphs(1, chars, glyphs);        return glyphs[0];    }     public int charToGlyph(int unicode) {        int[] chars = new int[1];        int [] glyphs = new int[1];        chars[0] = unicode;        charsToGlyphs(1, chars, glyphs);        return glyphs[0];    }     public abstract int getNumGlyphs();     public abstract void charsToGlyphs(int count,                                       char[] unicodes, int[] glyphs);     public abstract boolean charsToGlyphsNS(int count,                                            char[] unicodes, int[] glyphs);     public abstract void charsToGlyphs(int count,                                       int[] unicodes, int[] glyphs); }