pdfbox-trunk/fontbox/src/main/java/org/apache/fontbox/ttf/gsub/GsubWorker.java
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.fontbox.ttf.gsub;

import java.util.List;

/**
 * This class is responsible for replacing GlyphIDs with new ones according to the GSUB tables. Each language should
 * have an implementation of this.
 * 
 * @author Palash Ray
 * 
 */
public interface GsubWorker
{
    /**
     * Applies language-specific transforms including GSUB and any other pre or post-processing necessary for displaying
     * Glyphs correctly.
     * 
     * @param originalGlyphIds list of original glyph IDs
     * @return list of transformed glyph IDs
     * 
     */
    List<Integer> applyTransforms(List<Integer> originalGlyphIds);

}
