/**
* Re-orders a slide, to a new position.
*
* @param oldSlideNumber The old slide number (1 based)
* @param newSlideNumber The new slide number (1 based)
*/
public void reorderSlide(int oldSlideNumber, int newSlideNumber) {
// Ensure these numbers are valid
if (oldSlideNumber < 1 || newSlideNumber < 1) {
throw new IllegalArgumentException("Old and new slide numbers must be greater than 0");
}
if (oldSlideNumber > _slides.size() || newSlideNumber > _slides.size()) {
throw new IllegalArgumentException(
"Old and new slide numbers must not exceed the number of slides ("
+ _slides.size()
+ ")");
}
// The order of slides is defined by the order of slide atom sets in the
// SlideListWithText container.
SlideListWithText slwt = _documentRecord.getSlideSlideListWithText();
SlideAtomsSet[] sas = slwt.getSlideAtomsSets();
SlideAtomsSet tmp = sas[oldSlideNumber - 1];
sas[oldSlideNumber - 1] = sas[newSlideNumber - 1];
sas[newSlideNumber - 1] = tmp;
Collections.swap(_slides, oldSlideNumber - 1, newSlideNumber - 1);
_slides.get(newSlideNumber - 1).setSlideNumber(newSlideNumber);
_slides.get(oldSlideNumber - 1).setSlideNumber(oldSlideNumber);
ArrayList<Record> lst = new ArrayList<Record>();
for (SlideAtomsSet s : sas) {
lst.add(s.getSlidePersistAtom());
lst.addAll(Arrays.asList(s.getSlideRecords()));
}
Record[] r = lst.toArray(new Record[lst.size()]);
slwt.setChildRecord(r);
}
public static void main(String[] args) throws Exception {
if (args.length < 1) {
System.err.println("Need to give a filename");
System.exit(1);
}
HSLFSlideShow ss = new HSLFSlideShow(args[0]);
// Find the documents, and then their SLWT
Record[] records = ss.getRecords();
for (int i = 0; i < records.length; i++) {
if (records[i] instanceof Document) {
Record docRecord = records[i];
Record[] docChildren = docRecord.getChildRecords();
for (int j = 0; j < docChildren.length; j++) {
if (docChildren[j] instanceof SlideListWithText) {
System.out.println("Found SLWT at pos " + j + " in the Document at " + i);
System.out.println(" Has " + docChildren[j].getChildRecords().length + " children");
// Grab the SlideAtomSet's, which contain
// a SlidePersistAtom and then a bunch of text
// + related records
SlideListWithText slwt = (SlideListWithText) docChildren[j];
SlideListWithText.SlideAtomsSet[] thisSets = slwt.getSlideAtomsSets();
System.out.println(" Has " + thisSets.length + " AtomSets in it");
// Loop over the sets, showing what they contain
for (int k = 0; k < thisSets.length; k++) {
SlidePersistAtom spa = thisSets[k].getSlidePersistAtom();
System.out.println(" " + k + " has slide id " + spa.getSlideIdentifier());
System.out.println(" " + k + " has ref id " + spa.getRefID());
// Loop over the records, printing the text
Record[] slwtc = thisSets[k].getSlideRecords();
for (int l = 0; l < slwtc.length; l++) {
String text = null;
if (slwtc[l] instanceof TextBytesAtom) {
TextBytesAtom tba = (TextBytesAtom) slwtc[l];
text = tba.getText();
}
if (slwtc[l] instanceof TextCharsAtom) {
TextCharsAtom tca = (TextCharsAtom) slwtc[l];
text = tca.getText();
}
if (text != null) {
text = text.replace('\r', '\n');
System.out.println(" ''" + text + "''");
}
}
}
}
}
}
}
}
/**
* Removes the slide at the given index (0-based).
*
* <p>Shifts any subsequent slides to the left (subtracts one from their slide numbers).
*
* @param index the index of the slide to remove (0-based)
* @return the slide that was removed from the slide show.
*/
public HSLFSlide removeSlide(int index) {
int lastSlideIdx = _slides.size() - 1;
if (index < 0 || index > lastSlideIdx) {
throw new IllegalArgumentException(
"Slide index (" + index + ") is out of range (0.." + lastSlideIdx + ")");
}
SlideListWithText slwt = _documentRecord.getSlideSlideListWithText();
SlideAtomsSet[] sas = slwt.getSlideAtomsSets();
List<Record> records = new ArrayList<Record>();
List<SlideAtomsSet> sa = new ArrayList<SlideAtomsSet>(Arrays.asList(sas));
HSLFSlide removedSlide = _slides.remove(index);
_notes.remove(removedSlide.getNotes());
sa.remove(index);
int i = 0;
for (HSLFSlide s : _slides) s.setSlideNumber(i++);
for (SlideAtomsSet s : sa) {
records.add(s.getSlidePersistAtom());
records.addAll(Arrays.asList(s.getSlideRecords()));
}
if (sa.isEmpty()) {
_documentRecord.removeSlideListWithText(slwt);
} else {
slwt.setSlideAtomsSets(sa.toArray(new SlideAtomsSet[sa.size()]));
slwt.setChildRecord(records.toArray(new Record[records.size()]));
}
// if the removed slide had notes - remove references to them too
int notesId =
(removedSlide != null) ? removedSlide.getSlideRecord().getSlideAtom().getNotesID() : 0;
if (notesId != 0) {
SlideListWithText nslwt = _documentRecord.getNotesSlideListWithText();
records = new ArrayList<Record>();
ArrayList<SlideAtomsSet> na = new ArrayList<SlideAtomsSet>();
for (SlideAtomsSet ns : nslwt.getSlideAtomsSets()) {
if (ns.getSlidePersistAtom().getSlideIdentifier() == notesId) continue;
na.add(ns);
records.add(ns.getSlidePersistAtom());
if (ns.getSlideRecords() != null) {
records.addAll(Arrays.asList(ns.getSlideRecords()));
}
}
if (na.isEmpty()) {
_documentRecord.removeSlideListWithText(nslwt);
} else {
nslwt.setSlideAtomsSets(na.toArray(new SlideAtomsSet[na.size()]));
nslwt.setChildRecord(records.toArray(new Record[records.size()]));
}
}
return removedSlide;
}
/**
* Opens a new copy of SlideShow C, writes the active SlideListWithText out, and compares it to
* the write out of the supplied SlideShow. Also compares the contents.
*
* @param s
*/
private void assertMatchesSLTWC(SlideShow s) throws Exception {
// Grab a new copy of slideshow C
SlideShow refC = new SlideShow(_slTests.openResourceAsStream(filenameC));
// Write out the 2nd SLWT in the active document
SlideListWithText refSLWT = refC.getDocumentRecord().getSlideListWithTexts()[1];
byte[] raw_slwt = writeRecord(refSLWT);
// Write out the same for the supplied slideshow
SlideListWithText s_SLWT = s.getDocumentRecord().getSlideListWithTexts()[1];
byte[] s_slwt = writeRecord(s_SLWT);
// Check the records are the same
assertEquals(refSLWT.getChildRecords().length, s_SLWT.getChildRecords().length);
for (int i = 0; i < refSLWT.getChildRecords().length; i++) {
Record ref_r = refSLWT.getChildRecords()[i];
Record s_r = s_SLWT.getChildRecords()[i];
byte[] r_rb = writeRecord(ref_r);
byte[] s_rb = writeRecord(s_r);
assertEquals(r_rb.length, s_rb.length);
for (int j = 0; j < r_rb.length; j++) {
assertEquals(r_rb[j], s_rb[j]);
}
}
// Check the bytes are the same
assertEquals(raw_slwt.length, s_slwt.length);
for (int i = 0; i < raw_slwt.length; i++) {
assertEquals(raw_slwt[i], s_slwt[i]);
}
}
/**
* Create a blank <code>Slide</code>.
*
* @return the created <code>Slide</code>
*/
@Override
public HSLFSlide createSlide() {
SlideListWithText slist = null;
// We need to add the records to the SLWT that deals
// with Slides.
// Add it, if it doesn't exist
slist = _documentRecord.getSlideSlideListWithText();
if (slist == null) {
// Need to add a new one
slist = new SlideListWithText();
slist.setInstance(SlideListWithText.SLIDES);
_documentRecord.addSlideListWithText(slist);
}
// Grab the SlidePersistAtom with the highest Slide Number.
// (Will stay as null if no SlidePersistAtom exists yet in
// the slide, or only master slide's ones do)
SlidePersistAtom prev = null;
for (SlideAtomsSet sas : slist.getSlideAtomsSets()) {
SlidePersistAtom spa = sas.getSlidePersistAtom();
if (spa.getSlideIdentifier() < 0) {
// This is for a master slide
// Odd, since we only deal with the Slide SLWT
} else {
// Must be for a real slide
if (prev == null) {
prev = spa;
}
if (prev.getSlideIdentifier() < spa.getSlideIdentifier()) {
prev = spa;
}
}
}
// Set up a new SlidePersistAtom for this slide
SlidePersistAtom sp = new SlidePersistAtom();
// First slideId is always 256
sp.setSlideIdentifier(prev == null ? 256 : (prev.getSlideIdentifier() + 1));
// Add this new SlidePersistAtom to the SlideListWithText
slist.addSlidePersistAtom(sp);
// Create a new Slide
HSLFSlide slide = new HSLFSlide(sp.getSlideIdentifier(), sp.getRefID(), _slides.size() + 1);
slide.setSlideShow(this);
slide.onCreate();
// Add in to the list of Slides
_slides.add(slide);
logger.log(
POILogger.INFO,
"Added slide "
+ _slides.size()
+ " with ref "
+ sp.getRefID()
+ " and identifier "
+ sp.getSlideIdentifier());
// Add the core records for this new Slide to the record tree
org.apache.poi.hslf.record.Slide slideRecord = slide.getSlideRecord();
int psrId = addPersistentObject(slideRecord);
sp.setRefID(psrId);
slideRecord.setSheetId(psrId);
slide.setMasterSheet(_masters.get(0));
// All done and added
return slide;
}
/** Build up model level Slide and Notes objects, from the underlying records. */
private void buildSlidesAndNotes() {
// Ensure we really found a Document record earlier
// If we didn't, then the file is probably corrupt
if (_documentRecord == null) {
throw new CorruptPowerPointFileException(
"The PowerPoint file didn't contain a Document Record in its PersistPtr blocks. It is probably corrupt.");
}
// Fetch the SlideListWithTexts in the most up-to-date Document Record
//
// As far as we understand it:
// * The first SlideListWithText will contain a SlideAtomsSet
// for each of the master slides
// * The second SlideListWithText will contain a SlideAtomsSet
// for each of the slides, in their current order
// These SlideAtomsSets will normally contain text
// * The third SlideListWithText (if present), will contain a
// SlideAtomsSet for each Notes
// These SlideAtomsSets will not normally contain text
//
// Having indentified the masters, slides and notes + their orders,
// we have to go and find their matching records
// We always use the latest versions of these records, and use the
// SlideAtom/NotesAtom to match them with the StyleAtomSet
SlideListWithText masterSLWT = _documentRecord.getMasterSlideListWithText();
SlideListWithText slidesSLWT = _documentRecord.getSlideSlideListWithText();
SlideListWithText notesSLWT = _documentRecord.getNotesSlideListWithText();
// Find master slides
// These can be MainMaster records, but oddly they can also be
// Slides or Notes, and possibly even other odd stuff....
// About the only thing you can say is that the master details are in
// the first SLWT.
if (masterSLWT != null) {
for (SlideAtomsSet sas : masterSLWT.getSlideAtomsSets()) {
Record r = getCoreRecordForSAS(sas);
int sheetNo = sas.getSlidePersistAtom().getSlideIdentifier();
if (r instanceof org.apache.poi.hslf.record.Slide) {
HSLFTitleMaster master =
new HSLFTitleMaster((org.apache.poi.hslf.record.Slide) r, sheetNo);
master.setSlideShow(this);
_titleMasters.add(master);
} else if (r instanceof org.apache.poi.hslf.record.MainMaster) {
HSLFSlideMaster master =
new HSLFSlideMaster((org.apache.poi.hslf.record.MainMaster) r, sheetNo);
master.setSlideShow(this);
_masters.add(master);
}
}
}
// Having sorted out the masters, that leaves the notes and slides
// Start by finding the notes records to go with the entries in
// notesSLWT
org.apache.poi.hslf.record.Notes[] notesRecords;
Map<Integer, Integer> slideIdToNotes = new HashMap<Integer, Integer>();
if (notesSLWT == null) {
// None
notesRecords = new org.apache.poi.hslf.record.Notes[0];
} else {
// Match up the records and the SlideAtomSets
List<org.apache.poi.hslf.record.Notes> notesRecordsL =
new ArrayList<org.apache.poi.hslf.record.Notes>();
int idx = -1;
for (SlideAtomsSet notesSet : notesSLWT.getSlideAtomsSets()) {
idx++;
// Get the right core record
Record r = getCoreRecordForSAS(notesSet);
SlidePersistAtom spa = notesSet.getSlidePersistAtom();
String loggerLoc =
"A Notes SlideAtomSet at " + idx + " said its record was at refID " + spa.getRefID();
// Ensure it really is a notes record
if (r == null || r instanceof org.apache.poi.hslf.record.Notes) {
if (r == null) {
logger.log(
POILogger.WARN, loggerLoc + ", but that record didn't exist - record ignored.");
}
// we need to add also null-records, otherwise the index references to other existing
// don't work anymore
org.apache.poi.hslf.record.Notes notesRecord = (org.apache.poi.hslf.record.Notes) r;
notesRecordsL.add(notesRecord);
// Record the match between slide id and these notes
int slideId = spa.getSlideIdentifier();
slideIdToNotes.put(slideId, idx);
} else {
logger.log(POILogger.ERROR, loggerLoc + ", but that was actually a " + r);
}
}
notesRecords = new org.apache.poi.hslf.record.Notes[notesRecordsL.size()];
notesRecords = notesRecordsL.toArray(notesRecords);
}
// Now, do the same thing for our slides
org.apache.poi.hslf.record.Slide[] slidesRecords;
SlideAtomsSet[] slidesSets = new SlideAtomsSet[0];
if (slidesSLWT == null) {
// None
slidesRecords = new org.apache.poi.hslf.record.Slide[0];
} else {
// Match up the records and the SlideAtomSets
slidesSets = slidesSLWT.getSlideAtomsSets();
slidesRecords = new org.apache.poi.hslf.record.Slide[slidesSets.length];
for (int i = 0; i < slidesSets.length; i++) {
// Get the right core record
Record r = getCoreRecordForSAS(slidesSets[i]);
// Ensure it really is a slide record
if (r instanceof org.apache.poi.hslf.record.Slide) {
slidesRecords[i] = (org.apache.poi.hslf.record.Slide) r;
} else {
logger.log(
POILogger.ERROR,
"A Slide SlideAtomSet at "
+ i
+ " said its record was at refID "
+ slidesSets[i].getSlidePersistAtom().getRefID()
+ ", but that was actually a "
+ r);
}
}
}
// Finally, generate model objects for everything
// Notes first
for (org.apache.poi.hslf.record.Notes n : notesRecords) {
HSLFNotes hn = null;
if (n != null) {
hn = new HSLFNotes(n);
hn.setSlideShow(this);
}
_notes.add(hn);
}
// Then slides
for (int i = 0; i < slidesRecords.length; i++) {
SlideAtomsSet sas = slidesSets[i];
int slideIdentifier = sas.getSlidePersistAtom().getSlideIdentifier();
// Do we have a notes for this?
HSLFNotes notes = null;
// Slide.SlideAtom.notesId references the corresponding notes slide.
// 0 if slide has no notes.
int noteId = slidesRecords[i].getSlideAtom().getNotesID();
if (noteId != 0) {
Integer notesPos = slideIdToNotes.get(noteId);
if (notesPos != null) {
notes = _notes.get(notesPos);
} else {
logger.log(POILogger.ERROR, "Notes not found for noteId=" + noteId);
}
}
// Now, build our slide
HSLFSlide hs = new HSLFSlide(slidesRecords[i], notes, sas, slideIdentifier, (i + 1));
hs.setSlideShow(this);
_slides.add(hs);
}
}