1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* 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.layoutmgr.inline;
import org.apache.fop.area.PageViewport;
import org.apache.fop.area.Resolvable;
import org.apache.fop.area.Trait;
import org.apache.fop.area.inline.InlineArea;
import org.apache.fop.area.inline.TextArea;
import org.apache.fop.area.inline.UnresolvedPageNumber;
import org.apache.fop.fo.flow.AbstractPageNumberCitation;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontInfo;
import org.apache.fop.fonts.FontTriplet;
import org.apache.fop.layoutmgr.LayoutContext;
import org.apache.fop.layoutmgr.PositionIterator;
import org.apache.fop.layoutmgr.TraitSetter;
/**
* LayoutManager for the fo:page-number-citation(-last) formatting object
*/
public abstract class AbstractPageNumberCitationLayoutManager extends LeafNodeLayoutManager {
/** The page number citation object */
protected AbstractPageNumberCitation fobj;
/** Font for the page-number-citation */
protected Font font;
/** Indicates whether the page referred to by the citation has been resolved yet */
protected boolean resolved = false;
/**
* Constructor
*
* @param node the formatting object that creates this area
* TODO better retrieval of font info
*/
public AbstractPageNumberCitationLayoutManager(AbstractPageNumberCitation node) {
super(node);
fobj = node;
}
/** {@inheritDoc} */
public void initialize() {
FontInfo fi = fobj.getFOEventHandler().getFontInfo();
FontTriplet[] fontkeys = fobj.getCommonFont().getFontState(fi);
font = fi.getFontInstance(fontkeys[0], fobj.getCommonFont().fontSize.getValue(this));
setCommonBorderPaddingBackground(fobj.getCommonBorderPaddingBackground());
}
/**
* {@inheritDoc}
*/
protected AlignmentContext makeAlignmentContext(LayoutContext context) {
return new AlignmentContext(
font
, fobj.getLineHeight().getOptimum(this).getLength().getValue(this)
, fobj.getAlignmentAdjust()
, fobj.getAlignmentBaseline()
, fobj.getBaselineShift()
, fobj.getDominantBaseline()
, context.getAlignmentContext()
);
}
/** {@inheritDoc} */
public InlineArea get(LayoutContext context) {
curArea = getPageNumberCitationInlineArea();
return curArea;
}
/**
* {@inheritDoc}
* , LayoutContext)
*/
public void addAreas(PositionIterator posIter, LayoutContext context) {
super.addAreas(posIter, context);
if (!resolved) {
getPSLM().addUnresolvedArea(fobj.getRefId(), (Resolvable) curArea);
}
}
/**
* If id can be resolved then simply return a text area, otherwise
* return a resolvable area
*
* @return a corresponding InlineArea
*/
private InlineArea getPageNumberCitationInlineArea() {
PageViewport page = getPSLM().getFirstPVWithID(fobj.getRefId());
TextArea text;
if (page != null) {
String str = page.getPageNumberString();
// get page string from parent, build area
text = new TextArea();
int width = getStringWidth(str);
text.addWord(str, 0);
text.setIPD(width);
resolved = true;
} else {
resolved = false;
text = new UnresolvedPageNumber(fobj.getRefId(), font);
String str = "MMM"; // reserve three spaces for page number
int width = getStringWidth(str);
text.setIPD(width);
}
updateTextAreaTraits(text);
return text;
}
/**
* Updates the traits for the generated text area.
* @param text the text area
*/
protected void updateTextAreaTraits(TextArea text) {
TraitSetter.setProducerID(text, fobj.getId());
text.setBPD(font.getAscender() - font.getDescender());
text.setBaselineOffset(font.getAscender());
TraitSetter.addFontTraits(text, font);
text.addTrait(Trait.COLOR, fobj.getColor());
TraitSetter.addPtr(text, fobj.getPtr()); // used for accessibility
TraitSetter.addTextDecoration(text, fobj.getTextDecoration());
}
/**
* @param str string to be measured
* @return width (in millipoints ??) of the string
*/
protected int getStringWidth(String str) {
int width = 0;
for (int count = 0; count < str.length(); count++) {
width += font.getCharWidth(str.charAt(count));
}
return width;
}
}
|
