HanLayoutEngine.h revision 5980
0N/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 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle 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. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 3171N/A * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved. 0N/A * This class implements OpenType layout for Han fonts. It overrides 0N/A * the characerProcessing method to assign the correct OpenType feature 0N/A * tags for the CJK language-specific forms. 0N/A * This is the main constructor. It constructs an instance of HanOpenTypeLayoutEngine for 0N/A * a particular font, script and language. It takes the GSUB table as a parameter since 0N/A * LayoutEngine::layoutEngineFactory has to read the GSUB table to know that it has a 0N/A * Han OpenType font. 0N/A * @param fontInstance - the font 0N/A * @param scriptCode - the script 0N/A * @param langaugeCode - the language 0N/A * @param gsubTable - the GSUB table 3171N/A * @param success - set to an error code if the operation fails 0N/A * @see LayoutEngine::layoutEngineFactory 0N/A * @see OpenTypeLayoutEngine 0N/A * The destructor, virtual for correct polymorphic invocation. 1693N/A * ICU "poor man's RTTI", returns a UClassID for the actual class. 1693N/A * ICU "poor man's RTTI", returns a UClassID for this class. 0N/A * This method does Han OpenType character processing. It assigns the OpenType feature 0N/A * tags to the characters to generate the correct language-specific variants. 0N/A * @param chars - the input character context 0N/A * @param offset - the index of the first character to process 0N/A * @param count - the number of characters to process 0N/A * @param max - the number of characters in the input context 1693N/A * @param rightToLeft - <code>TRUE</code> if the characters are in a right to left directional run 1693N/A * @param glyphStorage - the object holding the glyph storage. The char index and auxillary data arrays will be set. 0N/A * Output parameters: 0N/A * @param outChars - the output character arrayt 0N/A * @param charIndices - the output character index array 0N/A * @param featureTags - the output feature tag array 0N/A * @param success - set to an error code if the operation fails 0N/A * @return the output character count