01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: }
|