HanLayoutEngine.h revision 0
239N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 0N/A * published by the Free Software Foundation. Sun designates this 157N/A * particular file as subject to the "Classpath" exception as provided 0N/A * by Sun in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 0N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 157N/A * CA 95054 USA or visit www.sun.com if you need additional information or 0N/A * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved. * This class implements OpenType layout for Han fonts. It overrides * the characerProcessing method to assign the correct OpenType feature * tags for the CJK language-specific forms. * This is the main constructor. It constructs an instance of HanOpenTypeLayoutEngine for * a particular font, script and language. It takes the GSUB table as a parameter since * LayoutEngine::layoutEngineFactory has to read the GSUB table to know that it has a * @param fontInstance - the font * @param scriptCode - the script * @param langaugeCode - the language * @param gsubTable - the GSUB table * @see LayoutEngine::layoutEngineFactory * @see OpenTypeLayoutEngine * The destructor, virtual for correct polymorphic invocation. * This method does Han OpenType character processing. It assigns the OpenType feature * tags to the characters to generate the correct language-specific variants. * @param chars - the input character context * @param offset - the index of the first character to process * @param count - the number of characters to process * @param max - the number of characters in the input context * @param rightToLeft - <code>TRUE</code> if the characters are in a * right to left directional run * @param glyphStorage - the object holding the glyph storage. The char * index and auxillary data arrays will be set. * @param outChars - the output character arrayt * @param charIndices - the output character index array * @param featureTags - the output feature tag array * @param success - set to an error code if the operation fails * @return the output character count