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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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.complexscripts.fonts;
-
- // CSOFF: LineLengthCheck
-
- /**
- * <p>Optional interface which indicates that glyph positioning is supported and, if supported,
- * can perform positioning.</p>
- *
- * <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p>
- */
- public interface Positionable {
-
- /**
- * Determines if font performs glyph positioning.
- * @return true if performs positioning
- */
- boolean performsPositioning();
-
- /**
- * Perform glyph positioning.
- * @param cs character sequence to map to position offsets (advancement adjustments)
- * @param script a script identifier
- * @param language a language identifier
- * @param fontSize font size
- * @return array (sequence) of 4-tuples of placement [PX,PY] and advance [AX,AY] adjustments, in that order,
- * with one 4-tuple for each element of glyph sequence, or null if no non-zero adjustment applies
- */
- int[][] performPositioning ( CharSequence cs, String script, String language, int fontSize );
-
- /**
- * Perform glyph positioning using an implied font size.
- * @param cs character sequence to map to position offsets (advancement adjustments)
- * @param script a script identifier
- * @param language a language identifier
- * @return array (sequence) of 4-tuples of placement [PX,PY] and advance [AX,AY] adjustments, in that order,
- * with one 4-tuple for each element of glyph sequence, or null if no non-zero adjustment applies
- */
- int[][] performPositioning ( CharSequence cs, String script, String language );
-
- }
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