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51 package org.apache.fop.fo.flow;
52
53 import org.apache.fop.fo.*;
55 import org.apache.fop.layout.*;
56 import org.apache.fop.apps.FOPException;
57
58 import java.util.ArrayList  ;
60
61 public class Footnote extends FObj {
62
63 public static class Maker extends FObj.Maker {
64 public FObj make(FObj parent, PropertyList propertyList,
65 String systemId, int line, int column)
66 throws FOPException {
67 return new Footnote(parent, propertyList, systemId, line, column);
68 }
69
70 }
71
72 public static FObj.Maker maker() {
73 return new Footnote.Maker();
74 }
75
76 public Footnote(FObj parent, PropertyList propertyList,
77 String systemId, int line, int column) throws FOPException {
78 super(parent, propertyList, systemId, line, column);
79 }
80
81 public String getName() {
82 return "fo:footnote";
83 }
84
85 public int layout(Area area) throws FOPException {
86 FONode inline = null;
87 FONode fbody = null;
88 if (this.marker == START) {
89 this.marker = 0;
90 }
91 int numChildren = this.children.size();
92 for (int i = this.marker; i < numChildren; i++) {
93 FONode fo = (FONode)children.get(i);
94 if (fo instanceof Inline) {
95 inline = fo;
96 int status = fo.layout(area);
97 if (Status.isIncomplete(status)) {
98 return status;
99 }
100 } else if (inline != null && fo instanceof FootnoteBody) {
101 fbody = fo;
103 if (area instanceof BlockArea) {
104 ((BlockArea)area).addFootnote((FootnoteBody)fbody);
105 } else {
106 Page page = area.getPage();
107 layoutFootnote(page, (FootnoteBody)fbody, area);
108 }
109 }
110 }
111 if (fbody == null) {
112 log.error("no footnote-body in footnote");
113 }
114 if (area instanceof BlockArea) {}
115 return Status.OK;
116 }
117
118 public static boolean layoutFootnote(Page p, FootnoteBody fb, Area area) {
119 try {
120 BodyAreaContainer bac = p.getBody();
121 AreaContainer footArea = bac.getFootnoteReferenceArea();
122 footArea.setIDReferences(bac.getIDReferences());
123 int basePos = footArea.getCurrentYPosition()
124 - footArea.getHeight();
125 int oldHeight = footArea.getHeight();
126 if (area != null) {
127 footArea.setMaxHeight(area.getMaxHeight() - area.getHeight()
128 + footArea.getHeight());
129 } else {
130 footArea.setMaxHeight(bac.getMaxHeight()
131 + footArea.getHeight());
132 }
133 if (!footArea.hasChildren()) {
134 StaticContent separator = bac.getPage().getPageSequence()
135 .getStaticContent("xsl-footnote-separator");
136 if (separator!=null) {
137 footArea.setIDReferences(bac.getIDReferences());
138 separator.layout(footArea, null);
139 int diff = footArea.getHeight() - oldHeight;
140 if (area != null) {
141 area.setMaxHeight(area.getMaxHeight() - diff);
142 }
143 if (bac.getFootnoteState() == 0) {
144 Area ar = bac.getMainReferenceArea();
145 decreaseMaxHeight(ar, diff);
146 footArea.setYPosition(basePos + footArea.getHeight());
147 }
148 basePos = footArea.getCurrentYPosition()
149 - footArea.getHeight();
150 oldHeight = footArea.getHeight();
151 }
152 }
153 int status = fb.layout(footArea);
154 if (Status.isIncomplete(status)) {
155 return false;
157 } else {
158 if (area != null) {
159 area.setMaxHeight(area.getMaxHeight()
160 - footArea.getHeight() + oldHeight);
161 }
162 if (bac.getFootnoteState() == 0) {
164 Area ar = bac.getMainReferenceArea();
165 decreaseMaxHeight(ar, footArea.getHeight() - oldHeight);
166 footArea.setYPosition(basePos + footArea.getHeight());
167 }
168 }
169 } catch (FOPException fope) {
170 return false;
171 }
172 return true;
173 }
174
175 protected static void decreaseMaxHeight(Area ar, int change) {
176 ar.setMaxHeight(ar.getMaxHeight() - change);
177 ArrayList children = ar.getChildren();
178 for (int i = 0; i < children.size(); i++) {
179 Object obj = children.get(i);
180 if (obj instanceof Area) {
181 Area childArea = (Area)obj;
182 decreaseMaxHeight(childArea, change);
183 }
184 }
185 }
186
187 }
188 |
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