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Java > Open Source Codes > org > apache > fop > datatypes > PercentBaseContext


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 /* $Id $ */
19  
20 package org.apache.fop.datatypes;
21
22 import org.apache.fop.fo.FObj;
23
24 /**
25  * This interface is used by the layout managers to provide relevant information
26  * back to the property percentage resolution logic, that is
27  * the percentages based property getValue() functions expect an object implementing
28  * this interface as an argument.
29  */
30 public interface PercentBaseContext {
31
32     /**
33      * Returns the base length for the given length base.
34      * Length base should be one of the constants defined in {@link LengthBase}.
35      * @param lengthBase Indicates which type of the base length value is to be returned
36      * @param fobj The FO object against which the percentage should be evaluated
37      * @return The base length value of the given kind
38      */
39     public int getBaseLength(int lengthBase, FObj fobj);
40     
41 }
42
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