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The Apache Commons Codec package contains simple encoder and decoders for
various formats such as Base64 and Hexadecimal. In addition to these
widely used encoders and decoders, the codec package also maintains a
collection of phonetic encoding utilities.
/*
* 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.
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package org.apache.poi.hssf.usermodel;
import java.util.List;
import java.util.Map;
import org.apache.poi.ddf.EscherClientDataRecord;
import org.apache.poi.ddf.EscherContainerRecord;
import org.apache.poi.ddf.EscherOptRecord;
import org.apache.poi.ddf.EscherProperty;
import org.apache.poi.ddf.EscherPropertyTypes;
import org.apache.poi.ddf.EscherRecord;
import org.apache.poi.ddf.EscherRecordTypes;
import org.apache.poi.hssf.record.CommonObjectDataSubRecord;
import org.apache.poi.hssf.record.EmbeddedObjectRefSubRecord;
import org.apache.poi.hssf.record.EscherAggregate;
import org.apache.poi.hssf.record.ObjRecord;
import org.apache.poi.hssf.record.Record;
import org.apache.poi.hssf.record.SubRecord;
import org.apache.poi.hssf.record.TextObjectRecord;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.util.RecordFormatException;
/**
* Factory class for producing Excel Shapes from Escher records
*/
public class HSSFShapeFactory {
/**
* build shape tree from escher container
* @param container root escher container from which escher records must be taken
* @param agg - EscherAggregate
* @param out - shape container to which shapes must be added
* @param root - node to create HSSFObjectData shapes
*/
public static void createShapeTree(EscherContainerRecord container, EscherAggregate agg, HSSFShapeContainer out, DirectoryNode root) {
if (container.getRecordId() == EscherContainerRecord.SPGR_CONTAINER) {
ObjRecord obj = null;
EscherClientDataRecord clientData = ((EscherContainerRecord) container.getChild(0)).getChildById(EscherClientDataRecord.RECORD_ID);
if (null != clientData) {
obj = (ObjRecord) agg.getShapeToObjMapping().get(clientData);
}
HSSFShapeGroup group = new HSSFShapeGroup(container, obj);
List children = container.getChildContainers();
// skip the first child record, it is group descriptor
for (int i = 0; i < children.size(); i++) {
EscherContainerRecord spContainer = children.get(i);
if (i != 0) {
createShapeTree(spContainer, agg, group, root);
}
}
out.addShape(group);
} else if (container.getRecordId() == EscherContainerRecord.SP_CONTAINER) {
Map shapeToObj = agg.getShapeToObjMapping();
ObjRecord objRecord = null;
TextObjectRecord txtRecord = null;
for (EscherRecord record : container) {
switch (EscherRecordTypes.forTypeID(record.getRecordId())) {
case CLIENT_DATA:
objRecord = (ObjRecord) shapeToObj.get(record);
break;
case CLIENT_TEXTBOX:
txtRecord = (TextObjectRecord) shapeToObj.get(record);
break;
default:
break;
}
}
if (objRecord == null) {
throw new RecordFormatException("EscherClientDataRecord can't be found.");
}
if (isEmbeddedObject(objRecord)) {
HSSFObjectData objectData = new HSSFObjectData(container, objRecord, root);
out.addShape(objectData);
return;
}
CommonObjectDataSubRecord cmo = (CommonObjectDataSubRecord) objRecord.getSubRecords().get(0);
final HSSFShape shape;
switch (cmo.getObjectType()) {
case CommonObjectDataSubRecord.OBJECT_TYPE_PICTURE:
shape = new HSSFPicture(container, objRecord);
break;
case CommonObjectDataSubRecord.OBJECT_TYPE_RECTANGLE:
shape = new HSSFSimpleShape(container, objRecord, txtRecord);
break;
case CommonObjectDataSubRecord.OBJECT_TYPE_LINE:
shape = new HSSFSimpleShape(container, objRecord);
break;
case CommonObjectDataSubRecord.OBJECT_TYPE_COMBO_BOX:
shape = new HSSFCombobox(container, objRecord);
break;
case CommonObjectDataSubRecord.OBJECT_TYPE_MICROSOFT_OFFICE_DRAWING:
EscherOptRecord optRecord = container.getChildById(EscherOptRecord.RECORD_ID);
if(optRecord == null) {
shape = new HSSFSimpleShape(container, objRecord, txtRecord);
} else {
EscherProperty property = optRecord.lookup(EscherPropertyTypes.GEOMETRY__VERTICES);
if (null != property) {
shape = new HSSFPolygon(container, objRecord, txtRecord);
} else {
shape = new HSSFSimpleShape(container, objRecord, txtRecord);
}
}
break;
case CommonObjectDataSubRecord.OBJECT_TYPE_TEXT:
shape = new HSSFTextbox(container, objRecord, txtRecord);
break;
case CommonObjectDataSubRecord.OBJECT_TYPE_COMMENT:
shape = new HSSFComment(container, objRecord, txtRecord, agg.getNoteRecordByObj(objRecord));
break;
default:
shape = new HSSFSimpleShape(container, objRecord, txtRecord);
}
out.addShape(shape);
}
}
private static boolean isEmbeddedObject(ObjRecord obj) {
for (SubRecord sub : obj.getSubRecords()) {
if (sub instanceof EmbeddedObjectRefSubRecord) {
return true;
}
}
return false;
}
}