1 /*
2 * Copyright 2002 - 2007 JEuclid, http://jeuclid.sf.net
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /* $Id: StyleAttributeLayoutContext.java,v 8afef6dd0d58 2007/09/14 08:29:58 maxberger $ */
18
19 package net.sourceforge.jeuclid.context;
20
21 import java.awt.Color;
22
23 import net.sourceforge.jeuclid.LayoutContext;
24 import net.sourceforge.jeuclid.elements.support.attributes.AttributesHelper;
25
26 /**
27 * @version $Revision: 8afef6dd0d58 $
28 */
29 public class StyleAttributeLayoutContext implements LayoutContext {
30
31 private final LayoutContext parentLayoutContext;
32
33 private final String sizeString;
34
35 private final Color foregroundColor;
36
37 /**
38 * Default Constructor.
39 *
40 * @param parent
41 * LayoutContext of parent.
42 * @param msize
43 * msize String to apply to parent context.
44 * @param foreground
45 * Foreground color for new context.
46 */
47 public StyleAttributeLayoutContext(final LayoutContext parent,
48 final String msize, final Color foreground) {
49 this.parentLayoutContext = parent;
50 this.sizeString = msize;
51 this.foregroundColor = foreground;
52 }
53
54 /** {@inheritDoc} */
55 public Object getParameter(final Parameter which) {
56 final Object retVal;
57 if (Parameter.MATHSIZE.equals(which) && (this.sizeString != null)) {
58 retVal = AttributesHelper.convertSizeToPt(this.sizeString,
59 this.parentLayoutContext, AttributesHelper.PT);
60 } else if (Parameter.MATHCOLOR.equals(which)
61 && this.foregroundColor != null) {
62 retVal = this.foregroundColor;
63 } else {
64 retVal = this.parentLayoutContext.getParameter(which);
65 }
66 return retVal;
67 }
68 }