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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.
* ====================================================================
*/
package org.apache.poi.xslf.usermodel;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamReader;
import org.apache.poi.hpsf.ClassID;
import org.apache.poi.ooxml.POIXMLDocumentPart.RelationPart;
import org.apache.poi.ooxml.POIXMLException;
import org.apache.poi.ooxml.util.XPathHelper;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.openxml4j.opc.PackageRelationship;
import org.apache.poi.poifs.filesystem.FileMagic;
import org.apache.poi.poifs.filesystem.Ole10Native;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.sl.usermodel.ObjectMetaData;
import org.apache.poi.sl.usermodel.ObjectMetaData.Application;
import org.apache.poi.sl.usermodel.ObjectShape;
import org.apache.poi.util.Internal;
import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlException;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlip;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlipFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGraphicalObjectData;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPoint2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPositiveSize2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTShapeProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTransform2D;
import org.openxmlformats.schemas.drawingml.x2006.main.STShapeType;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGraphicalObjectFrame;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGraphicalObjectFrameNonVisual;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTOleObject;
import org.openxmlformats.schemas.presentationml.x2006.main.CTPicture;
import org.openxmlformats.schemas.presentationml.x2006.main.CTPictureNonVisual;
public class XSLFObjectShape extends XSLFGraphicFrame implements ObjectShape {
/* package */ static final String OLE_URI = "http://schemas.openxmlformats.org/presentationml/2006/ole";
private static final QName[] GRAPHIC = { new QName(DML_NS, "graphic") };
private static final QName[] GRAPHIC_DATA = { new QName(DML_NS, "graphicData") };
private static final QName[] OLE_OBJ = { new QName(PML_NS, "oleObj") };
private static final QName[] CT_PICTURE = { new QName(PML_NS, "pic") };
private CTOleObject _oleObject;
private XSLFPictureData _data;
/*package*/ XSLFObjectShape(CTGraphicalObjectFrame shape, XSLFSheet sheet){
super(shape, sheet);
// select oleObj potentially under AlternateContent
// usually the mc:Choice element will be selected first
try {
_oleObject = XPathHelper.selectProperty(getXmlObject(), CTOleObject.class, null, GRAPHIC, GRAPHIC_DATA, OLE_OBJ);
} catch (XmlException e) {
// ole objects should be also inside AlternateContent tags, even with ECMA 376 edition 1
throw new IllegalStateException(e);
}
}
@Internal
public CTOleObject getCTOleObject(){
return _oleObject;
}
@Override
public XSLFObjectData getObjectData() {
String oleRel = getCTOleObject().getId();
return getSheet().getRelationPartById(oleRel).getDocumentPart();
}
@Override
public String getProgId() {
return (_oleObject == null) ? null : _oleObject.getProgId();
}
@Override
public String getFullName() {
return (_oleObject == null) ? null : _oleObject.getName();
}
/**
* Return the data on the (internal) picture.
* For an external linked picture, will return null
*/
@Override
public XSLFPictureData getPictureData() {
if(_data == null){
String blipId = getBlipId();
if (blipId == null) {
return null;
}
PackagePart p = getSheet().getPackagePart();
PackageRelationship rel = p.getRelationship(blipId);
if (rel != null) {
try {
PackagePart imgPart = p.getRelatedPart(rel);
_data = new XSLFPictureData(imgPart);
}
catch (Exception e) {
throw new POIXMLException(e);
}
}
}
return _data;
}
protected CTBlip getBlip(){
return getBlipFill().getBlip();
}
protected String getBlipId(){
String id = getBlip().getEmbed();
if (id.isEmpty()) {
return null;
}
return id;
}
protected CTBlipFillProperties getBlipFill() {
try {
CTPicture pic = XPathHelper.selectProperty
(getXmlObject(), CTPicture.class, XSLFObjectShape::parse, GRAPHIC, GRAPHIC_DATA, OLE_OBJ, CT_PICTURE);
return (pic != null) ? pic.getBlipFill() : null;
} catch (XmlException e) {
return null;
}
}
private static CTPicture parse(XMLStreamReader reader) throws XmlException {
CTGroupShape gs = CTGroupShape.Factory.parse(reader);
return (gs.sizeOfPicArray() > 0) ? gs.getPicArray(0) : null;
}
@Override
public OutputStream updateObjectData(final Application application, final ObjectMetaData metaData) throws IOException {
final ObjectMetaData md = (application != null) ? application.getMetaData() : metaData;
if (md == null || md.getClassID() == null) {
throw new IllegalArgumentException("either application and/or metaData needs to be set.");
}
final XSLFSheet sheet = getSheet();
final RelationPart rp;
if (_oleObject.isSetId()) {
// object data was already set
rp = sheet.getRelationPartById(_oleObject.getId());
} else {
// object data needs to be initialized
try {
final XSLFRelation descriptor = XSLFRelation.OLE_OBJECT;
final OPCPackage pack = sheet.getPackagePart().getPackage();
int nextIdx = pack.getUnusedPartIndex(descriptor.getDefaultFileName());
rp = sheet.createRelationship(descriptor, XSLFFactory.getInstance(), nextIdx, false);
_oleObject.setId(rp.getRelationship().getId());
} catch (InvalidFormatException e) {
throw new IOException("Unable to add new ole embedding", e);
}
// setting spid only works with a vml drawing object
// oleObj.setSpid("_x0000_s"+(1025+objectIdx));
}
_oleObject.setProgId(md.getProgId());
_oleObject.setName(md.getObjectName());
return new XSLFObjectOutputStream(rp.getDocumentPart().getPackagePart(),md);
}
private static class XSLFObjectOutputStream extends ByteArrayOutputStream {
final PackagePart objectPart;
final ObjectMetaData metaData;
private XSLFObjectOutputStream(final PackagePart objectPart, final ObjectMetaData metaData) {
super(100000);
this.objectPart = objectPart;
this.metaData = metaData;
}
public void close() throws IOException {
objectPart.clear();
try (final OutputStream os = objectPart.getOutputStream()) {
final ByteArrayInputStream bis = new ByteArrayInputStream(this.buf, 0, size());
final FileMagic fm = FileMagic.valueOf(this.buf);
if (fm == FileMagic.OLE2) {
try (final POIFSFileSystem poifs = new POIFSFileSystem(bis)) {
poifs.getRoot().setStorageClsid(metaData.getClassID());
poifs.writeFilesystem(os);
}
} else if (metaData.getOleEntry() == null) {
// OLE Name hasn't been specified, pass the input through
os.write(this.buf, 0, size());
} else {
try (final POIFSFileSystem poifs = new POIFSFileSystem()) {
final ClassID clsId = metaData.getClassID();
if (clsId != null) {
poifs.getRoot().setStorageClsid(clsId);
}
poifs.createDocument(bis, metaData.getOleEntry());
Ole10Native.createOleMarkerEntry(poifs);
poifs.writeFilesystem(os);
}
}
}
}
}
/**
*
*
* @param shapeId 1-based shapeId
* @param picRel relationship to the picture data in the ooxml package
* @return
*/
static CTGraphicalObjectFrame prototype(int shapeId, String picRel){
CTGraphicalObjectFrame frame = CTGraphicalObjectFrame.Factory.newInstance();
CTGraphicalObjectFrameNonVisual nvGr = frame.addNewNvGraphicFramePr();
CTNonVisualDrawingProps cnv = nvGr.addNewCNvPr();
// usually the shape name has its index based on the n-th embeding, but having
// the prototype separate from the actual updating of the object, we use the shape id
cnv.setName("Object " + shapeId);
cnv.setId(shapeId);
// add empty property elements otherwise Powerpoint doesn't load the file ...
nvGr.addNewCNvGraphicFramePr();
nvGr.addNewNvPr();
frame.addNewXfrm();
CTGraphicalObjectData gr = frame.addNewGraphic().addNewGraphicData();
gr.setUri(OLE_URI);
XmlCursor grCur = gr.newCursor();
grCur.toEndToken();
grCur.beginElement(new QName(PML_NS, "oleObj"));
grCur.insertElement(new QName(PML_NS, "embed"));
CTGroupShape grpShp = CTGroupShape.Factory.newInstance();
CTPicture pic = grpShp.addNewPic();
CTPictureNonVisual nvPicPr = pic.addNewNvPicPr();
CTNonVisualDrawingProps cNvPr = nvPicPr.addNewCNvPr();
cNvPr.setName("");
cNvPr.setId(0);
nvPicPr.addNewCNvPicPr();
nvPicPr.addNewNvPr();
CTBlipFillProperties blip = pic.addNewBlipFill();
blip.addNewBlip().setEmbed(picRel);
blip.addNewStretch().addNewFillRect();
CTShapeProperties spPr = pic.addNewSpPr();
CTTransform2D xfrm = spPr.addNewXfrm();
CTPoint2D off = xfrm.addNewOff();
off.setX(1270000);
off.setY(1270000);
CTPositiveSize2D xext = xfrm.addNewExt();
xext.setCx(1270000);
xext.setCy(1270000);
spPr.addNewPrstGeom().setPrst(STShapeType.RECT);
XmlCursor picCur = grpShp.newCursor();
picCur.toStartDoc();
picCur.moveXmlContents(grCur);
picCur.dispose();
grCur.dispose();
return frame;
}
}