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Batik Graphics Vector Tree (GVT)

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/*

   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.batik.gvt.font;

import java.awt.font.FontRenderContext;
import java.text.AttributedCharacterIterator;

/**
 * An interface for handling altGlyphs.
 *
 * @author Bella Robinson
 * @version $Id: AltGlyphHandler.java 1733416 2016-03-03 07:07:13Z gadams $
 */
public interface AltGlyphHandler {

    /**
     * Creates a glyph vector containing the alternate glyphs.
     *
     * @param frc The current font render context.
     * @param fontSize The required font size.
     * @return The GVTGlyphVector containing the alternate glyphs, or null if
     * the alternate glyphs could not be found.
     */
    GVTGlyphVector createGlyphVector(FontRenderContext frc, float fontSize,
                                     AttributedCharacterIterator aci);

}