/**
* Create an image part from the provided byte array, attach it to the source part (eg the main
* document part, a header part etc), and return it.
*
* <p>Works for both docx and pptx.
*
* <p>Knowing the MIME type allows you to avoid ImageInfo, but you'll probably also need to know
* the image dimensions
*
* @param opcPackage
* @param sourcePart
* @param bytes
* @param mime MIME type eg image/png
* @return
* @throws Exception @Since 3.0.1
*/
public static BinaryPartAbstractImage createImagePart(
OpcPackage opcPackage, Part sourcePart, byte[] bytes, String mime) throws Exception {
String ext = mimeToExt(mime);
if (mime == null || ext == null) {
log.warn("Null or unknown mime type; image introspection required!");
return createImagePart(opcPackage, sourcePart, bytes);
}
ContentTypeManager ctm = opcPackage.getContentTypeManager();
// Ensure the relationships part exists
if (sourcePart.getRelationshipsPart() == null) {
RelationshipsPart.createRelationshipsPartForPart(sourcePart);
}
String proposedRelId = sourcePart.getRelationshipsPart().getNextId();
BinaryPartAbstractImage imagePart =
(BinaryPartAbstractImage)
ctm.newPartForContentType(
mime, createImageName(opcPackage, sourcePart, proposedRelId, ext), null);
log.debug(
"created part "
+ imagePart.getClass().getName()
+ " with name "
+ imagePart.getPartName().toString());
imagePart.setBinaryData(bytes);
imagePart.rels.add(sourcePart.addTargetPart(imagePart, proposedRelId));
return imagePart;
}
/**
* Create a linked image part, and attach it as a rel of the specified source part (eg a header
* part).
*
* <p>The current behaviour is that the part is added to the package, but since the target mode of
* the rel is external, the part is redundant.
*
* @param wordMLPackage
* @param sourcePart
* @param url
* @return
* @throws Exception
*/
public static BinaryPartAbstractImage createLinkedImagePart(
OpcPackage opcPackage, Part sourcePart, URL url) throws Exception {
log.debug("Incoming url for linked image: " + url.toString());
ImageInfo info =
ensureFormatIsSupported(url, null, null, false); // final param doesn't matter in this case
ContentTypeManager ctm = opcPackage.getContentTypeManager();
String proposedRelId = sourcePart.getRelationshipsPart().getNextId();
// In order to ensure unique part name,
// idea is to use the relId, which ought to be unique
String ext = info.getMimeType().substring(info.getMimeType().indexOf("/") + 1);
BinaryPartAbstractImage imagePart =
(BinaryPartAbstractImage)
ctm.newPartForContentType(
info.getMimeType(),
createImageName(opcPackage, sourcePart, proposedRelId, ext),
null);
// NB: contents never populated
log.debug(
"created part "
+ imagePart.getClass().getName()
+ " with name "
+ imagePart.getPartName().toString());
imagePart.rels.add(
sourcePart.addTargetPart(
imagePart)); // want to create rel with suitable name; side effect is to add part
imagePart.getRelLast().setTargetMode("External");
opcPackage.getExternalResources().put(imagePart.getExternalTarget(), imagePart);
// if (!url.getProtocol().equals("file") && new File(url.toString() ).isFile()) {
// imagePart.rel.setTarget("file:///" + url);
// } else {
// imagePart.rel.setTarget(url.toString());
// }
imagePart.getRelLast().setTarget(url.toString());
imagePart.setImageInfo(info);
return imagePart;
}
/**
* Create an image part from the provided filePath image, attach it to the source part (eg the
* main document part, a header part etc), and return it.
*
* <p>Works for both docx and pptx.
*
* @param opcPackage
* @param sourcePart
* @param filePath
* @return
* @throws Exception
*/
public static BinaryPartAbstractImage createImagePart(
OpcPackage opcPackage, Part sourcePart, File imageFile) throws Exception {
final byte[] locByte = new byte[1];
// We are in the case that image is not load (no byte Array) so isLoad is false
ImageInfo info = ensureFormatIsSupported(imageFile, locByte, false);
ContentTypeManager ctm = opcPackage.getContentTypeManager();
// Ensure the relationships part exists
if (sourcePart.getRelationshipsPart() == null) {
RelationshipsPart.createRelationshipsPartForPart(sourcePart);
}
String proposedRelId = sourcePart.getRelationshipsPart().getNextId();
String ext = info.getMimeType().substring(info.getMimeType().indexOf("/") + 1);
BinaryPartAbstractImage imagePart =
(BinaryPartAbstractImage)
ctm.newPartForContentType(
info.getMimeType(),
createImageName(opcPackage, sourcePart, proposedRelId, ext),
null);
log.debug(
"created part "
+ imagePart.getClass().getName()
+ " with name "
+ imagePart.getPartName().toString());
FileInputStream fis = new FileInputStream(imageFile);
imagePart.setBinaryData(fis);
imagePart.rels.add(sourcePart.addTargetPart(imagePart, proposedRelId));
imagePart.setImageInfo(info);
return imagePart;
}
/**
* Create an image part from the provided byte array, attach it to the source part (eg the main
* document part, a header part etc), and return it.
*
* <p>Works for both docx and pptx.
*
* <p>Note: this method creates a temp file (and attempts to delete it). That's because it uses
* org.apache.xmlgraphics
*
* @param opcPackage
* @param sourcePart
* @param bytes
* @return
* @throws Exception
*/
public static BinaryPartAbstractImage createImagePart(
OpcPackage opcPackage, Part sourcePart, byte[] bytes) throws Exception {
// Whatever image type this is, we're going to need
// to know its dimensions.
// For that we use ImageInfo, which can only
// load an image from a URI.
// So first, write the bytes to a temp file
File tmpImageFile = File.createTempFile("img", ".img");
FileOutputStream fos = new FileOutputStream(tmpImageFile);
fos.write(bytes);
fos.close();
log.debug("created tmp file: " + tmpImageFile.getAbsolutePath());
ImageInfo info = ensureFormatIsSupported(tmpImageFile, bytes, true);
// In the absence of an exception, tmpImageFile now contains an image
// Word will accept
ContentTypeManager ctm = opcPackage.getContentTypeManager();
// Ensure the relationships part exists
if (sourcePart.getRelationshipsPart() == null) {
RelationshipsPart.createRelationshipsPartForPart(sourcePart);
}
String proposedRelId = sourcePart.getRelationshipsPart().getNextId();
String ext = info.getMimeType().substring(info.getMimeType().indexOf("/") + 1);
// System.out.println(ext);
BinaryPartAbstractImage imagePart =
(BinaryPartAbstractImage)
ctm.newPartForContentType(
info.getMimeType(),
createImageName(opcPackage, sourcePart, proposedRelId, ext),
null);
log.debug(
"created part "
+ imagePart.getClass().getName()
+ " with name "
+ imagePart.getPartName().toString());
FileInputStream fis = new FileInputStream(tmpImageFile);
imagePart.setBinaryData(fis);
imagePart.rels.add(sourcePart.addTargetPart(imagePart, proposedRelId));
imagePart.setImageInfo(info);
// Delete the tmp file
// As per http://stackoverflow.com/questions/991489/i-cant-delete-a-file-in-java
// the following 3 lines are necessary, at least on Win 7 x64
// Also reported on Win XP, but in my testing, the files were deleting OK anyway.
fos = null;
fis = null;
if (Docx4jProperties.getProperty(
"docx4j.openpackaging.parts.WordprocessingML.BinaryPartAbstractImage.TempFiles.ForceGC",
true)) {
System.gc();
}
if (tmpImageFile.delete()) {
log.debug(".. deleted " + tmpImageFile.getAbsolutePath());
} else {
log.warn("Couldn't delete tmp file " + tmpImageFile.getAbsolutePath());
tmpImageFile.deleteOnExit();
// If that doesn't work, see "Clean Up Your Mess: Managing Temp Files in Java Apps"
// at devx.com
}
return imagePart;
}