| /* |
| * 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.fonts; |
| |
| // CSOFF: LineLengthCheck |
| |
| /** |
| * Optional interface which indicates that glyph positioning is supported and, if supported, |
| * can perform positioning. |
| * @author Glenn Adams |
| */ |
| 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 ); |
| |
| } |