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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
* 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.table;
import java.util.LinkedList;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.flow.table.EffRow;
import org.apache.fop.fo.flow.table.GridUnit;
import org.apache.fop.fo.flow.table.PrimaryGridUnit;
import org.apache.fop.fo.flow.table.TableRow;
import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
import org.apache.fop.fo.properties.LengthRangeProperty;
import org.apache.fop.layoutmgr.ElementListObserver;
import org.apache.fop.layoutmgr.LayoutContext;
import org.apache.fop.layoutmgr.MinOptMaxUtil;
import org.apache.fop.traits.MinOptMax;
import org.apache.fop.util.BreakUtil;
class RowGroupLayoutManager {
private static Log log = LogFactory.getLog(RowGroupLayoutManager.class);
private EffRow[] rowGroup;
private TableLayoutManager tableLM;
private TableStepper tableStepper;
RowGroupLayoutManager(TableLayoutManager tableLM, EffRow[] rowGroup,
TableStepper tableStepper) {
this.tableLM = tableLM;
this.rowGroup = rowGroup;
this.tableStepper = tableStepper;
}
public LinkedList getNextKnuthElements(LayoutContext context, int alignment, int bodyType) {
LinkedList returnList = new LinkedList();
createElementsForRowGroup(context, alignment, bodyType, returnList);
context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING,
rowGroup[0].mustKeepWithPrevious());
context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING,
rowGroup[rowGroup.length - 1].mustKeepWithNext());
int breakBefore = Constants.EN_AUTO;
TableRow firstRow = rowGroup[0].getTableRow();
if (firstRow != null) {
breakBefore = firstRow.getBreakBefore();
}
context.setBreakBefore(BreakUtil.compareBreakClasses(breakBefore,
rowGroup[0].getBreakBefore()));
int breakAfter = Constants.EN_AUTO;
TableRow lastRow = rowGroup[rowGroup.length - 1].getTableRow();
if (lastRow != null) {
breakAfter = lastRow.getBreakAfter();
}
context.setBreakAfter(BreakUtil.compareBreakClasses(breakAfter,
rowGroup[rowGroup.length - 1].getBreakAfter()));
return returnList;
}
/**
* Creates Knuth elements for a row group (see TableRowIterator.getNextRowGroup()).
* @param context Active LayoutContext
* @param alignment alignment indicator
* @param bodyType Indicates what kind of body is being processed (BODY, HEADER or FOOTER)
* @param returnList List to received the generated elements
* @param rowGroup row group to process
*/
private void createElementsForRowGroup(LayoutContext context, int alignment,
int bodyType, LinkedList returnList) {
log.debug("Handling row group with " + rowGroup.length + " rows...");
MinOptMax[] rowHeights = new MinOptMax[rowGroup.length];
MinOptMax[] explicitRowHeights = new MinOptMax[rowGroup.length];
EffRow row;
List pgus = new java.util.ArrayList(); //holds a list of a row's primary grid units
for (int rgi = 0; rgi < rowGroup.length; rgi++) {
row = rowGroup[rgi];
rowHeights[rgi] = new MinOptMax(0, 0, Integer.MAX_VALUE);
explicitRowHeights[rgi] = new MinOptMax(0, 0, Integer.MAX_VALUE);
pgus.clear();
TableRow tableRow = null;
// The row's minimum content height; 0 if the row's height is auto, otherwise
// the .minimum component of the explicitly specified value
int minRowBPD = 0;
// The BPD of the biggest cell in the row
int maxCellBPD = 0;
for (int j = 0; j < row.getGridUnits().size(); j++) {
GridUnit gu = row.getGridUnit(j);
if ((gu.isPrimary() || (gu.getColSpanIndex() == 0 && gu.isLastGridUnitRowSpan()))
&& !gu.isEmpty()) {
PrimaryGridUnit primary = gu.getPrimary();
if (gu.isPrimary()) {
// TODO a new LM must be created for every new static-content
primary.createCellLM();
primary.getCellLM().setParent(tableLM);
//Determine the table-row if any
if (tableRow == null && primary.getRow() != null) {
tableRow = primary.getRow();
//Check for bpd on row, see CSS21, 17.5.3 Table height algorithms
LengthRangeProperty rowBPD = tableRow.getBlockProgressionDimension();
if (!rowBPD.getMinimum(tableLM).isAuto()) {
minRowBPD = Math.max(minRowBPD,
rowBPD.getMinimum(tableLM).getLength().getValue(tableLM));
}
MinOptMaxUtil.restrict(explicitRowHeights[rgi], rowBPD, tableLM);
}
//Calculate width of cell
int spanWidth = 0;
for (int i = primary.getColIndex();
i < primary.getColIndex()
+ primary.getCell().getNumberColumnsSpanned();
i++) {
if (tableLM.getColumns().getColumn(i + 1) != null) {
spanWidth += tableLM.getColumns().getColumn(i + 1)
.getColumnWidth().getValue(tableLM);
}
}
LayoutContext childLC = new LayoutContext(0);
childLC.setStackLimitBP(context.getStackLimitBP()); //necessary?
childLC.setRefIPD(spanWidth);
//Get the element list for the cell contents
LinkedList elems = primary.getCellLM().getNextKnuthElements(
childLC, alignment);
ElementListObserver.observe(elems, "table-cell", primary.getCell().getId());
primary.setElements(elems);
}
//Calculate height of row, see CSS21, 17.5.3 Table height algorithms
if (gu.isLastGridUnitRowSpan()) {
// The effective cell's bpd, after taking into account bpd
// (possibly explicitly) set on the row or on the cell, and the
// cell's content length
int effectiveCellBPD = minRowBPD;
LengthRangeProperty cellBPD = primary.getCell()
.getBlockProgressionDimension();
if (!cellBPD.getMinimum(tableLM).isAuto()) {
effectiveCellBPD = Math.max(effectiveCellBPD,
cellBPD.getMinimum(tableLM).getLength().getValue(tableLM));
}
if (!cellBPD.getOptimum(tableLM).isAuto()) {
effectiveCellBPD = Math.max(effectiveCellBPD,
cellBPD.getOptimum(tableLM).getLength().getValue(tableLM));
}
if (gu.getRowSpanIndex() == 0) {
//TODO ATM only non-row-spanned cells are taken for this
MinOptMaxUtil.restrict(explicitRowHeights[rgi], cellBPD, tableLM);
}
effectiveCellBPD = Math.max(effectiveCellBPD,
primary.getContentLength());
int borderWidths = primary.getBeforeAfterBorderWidth();
int padding = 0;
maxCellBPD = Math.max(maxCellBPD, effectiveCellBPD);
CommonBorderPaddingBackground cbpb
= primary.getCell().getCommonBorderPaddingBackground();
padding += cbpb.getPaddingBefore(false, primary.getCellLM());
padding += cbpb.getPaddingAfter(false, primary.getCellLM());
int effRowHeight = effectiveCellBPD
+ padding + borderWidths;
for (int previous = 0; previous < gu.getRowSpanIndex(); previous++) {
effRowHeight -= rowHeights[rgi - previous - 1].opt;
}
if (effRowHeight > rowHeights[rgi].min) {
//This is the new height of the (grid) row
MinOptMaxUtil.extendMinimum(rowHeights[rgi], effRowHeight, false);
}
}
if (gu.isPrimary()) {
pgus.add(primary);
}
}
}
row.setHeight(rowHeights[rgi]);
row.setExplicitHeight(explicitRowHeights[rgi]);
if (maxCellBPD > row.getExplicitHeight().max) {
log.warn(FONode.decorateWithContextInfo(
"The contents of row " + (row.getIndex() + 1)
+ " are taller than they should be (there is a"
+ " block-progression-dimension or height constraint on the indicated row)."
+ " Due to its contents the row grows"
+ " to " + maxCellBPD + " millipoints, but the row shouldn't get"
+ " any taller than " + row.getExplicitHeight() + " millipoints.",
row.getTableRow()));
}
}
if (log.isDebugEnabled()) {
log.debug("rowGroup:");
for (int i = 0; i < rowHeights.length; i++) {
log.debug(" height=" + rowHeights[i] + " explicit=" + explicitRowHeights[i]);
}
}
LinkedList elements = tableStepper.getCombinedKnuthElementsForRowGroup(context,
rowGroup, bodyType);
returnList.addAll(elements);
}
}
|
