bool OCGs::optContentIsVisible( Object *dictRef )
{
Object dictObj;
Dict *dict;
Object dictType;
Object ocg;
Object policy;
bool result = true;
dictRef->fetch( m_xref, &dictObj );
if ( ! dictObj.isDict() ) {
error(-1, "Unexpected oc reference target: %i", dictObj.getType() );
dictObj.free();
return result;
}
dict = dictObj.getDict();
// printf("checking if optContent is visible\n");
dict->lookup("Type", &dictType);
if (dictType.isName("OCMD")) {
// If we supported Visibility Expressions, we'd check
// for a VE entry, and then call out to the parser here...
// printf("found OCMD dict\n");
dict->lookup("P", &policy);
dict->lookupNF("OCGs", &ocg);
if (ocg.isArray()) {
if (policy.isName("AllOn")) {
result = allOn( ocg.getArray() );
} else if (policy.isName("AllOff")) {
result = allOff( ocg.getArray() );
} else if (policy.isName("AnyOff")) {
result = anyOff( ocg.getArray() );
} else if ( (!policy.isName()) || (policy.isName("AnyOn") ) ) {
// this is the default
result = anyOn( ocg.getArray() );
}
} else if (ocg.isRef()) {
OptionalContentGroup* oc = findOcgByRef( ocg.getRef() );
if ( !oc || oc->getState() == OptionalContentGroup::Off ) {
result = false;
} else {
result = true ;
}
}
ocg.free();
policy.free();
} else if ( dictType.isName("OCG") ) {
OptionalContentGroup* oc = findOcgByRef( dictRef->getRef() );
if ( !oc || oc->getState() == OptionalContentGroup::Off ) {
result=false;
}
}
dictType.free();
dictObj.free();
// printf("visibility: %s\n", result? "on" : "off");
return result;
}
bool OCGs::anyOff( Array *ocgArray )
{
for (int i = 0; i < ocgArray->getLength(); ++i) {
Object ocgItem;
ocgArray->getNF(i, &ocgItem);
if (ocgItem.isRef()) {
OptionalContentGroup* oc = findOcgByRef( ocgItem.getRef() );
if ( oc && oc->getState() == OptionalContentGroup::Off ) {
return true;
}
}
}
return false;
}
OptionalContentGroup* OCGs::findOcgByRef( const Ref &ref)
{
//TODO: make this more efficient
OptionalContentGroup *ocg = NULL;
for (int i=0; i < optionalContentGroups->getLength(); ++i) {
ocg = (OptionalContentGroup*)optionalContentGroups->get(i);
if ( (ocg->getRef().num == ref.num) && (ocg->getRef().gen == ref.gen) ) {
return ocg;
}
}
error(-1, "Could not find a OCG with Ref (%d:%d)", ref.num, ref.gen);
// not found
return NULL;
}
OCGs::OCGs(Object *ocgObject, XRef *xref) :
m_xref(xref)
{
// we need to parse the dictionary here, and build optionalContentGroups
ok = gTrue;
optionalContentGroups = new GooList();
Object ocgList;
ocgObject->dictLookup("OCGs", &ocgList);
if (!ocgList.isArray()) {
error(-1, "Expected the optional content group list, but wasn't able to find it, or it isn't an Array");
ocgList.free();
ok = gFalse;
return;
}
// we now enumerate over the ocgList, and build up the optionalContentGroups list.
for(int i = 0; i < ocgList.arrayGetLength(); ++i) {
Object ocg;
ocgList.arrayGet(i, &ocg);
if (!ocg.isDict()) {
ocg.free();
break;
}
OptionalContentGroup *thisOptionalContentGroup = new OptionalContentGroup(ocg.getDict());
ocg.free();
ocgList.arrayGetNF(i, &ocg);
// TODO: we should create a lookup map from Ref to the OptionalContentGroup
thisOptionalContentGroup->setRef( ocg.getRef() );
ocg.free();
// the default is ON - we change state later, depending on BaseState, ON and OFF
thisOptionalContentGroup->setState(OptionalContentGroup::On);
optionalContentGroups->append(thisOptionalContentGroup);
}
Object defaultOcgConfig;
ocgObject->dictLookup("D", &defaultOcgConfig);
if (!defaultOcgConfig.isDict()) {
error(-1, "Expected the default config, but wasn't able to find it, or it isn't a Dictionary");
defaultOcgConfig.free();
ocgList.free();
ok = gFalse;
return;
}
#if 0
// this is untested - we need an example showing BaseState
Object baseState;
defaultOcgConfig.dictLookup("BaseState", &baseState);
if (baseState.isString()) {
// read the value, and set each OptionalContentGroup entry appropriately
}
baseState.free();
#endif
Object on;
defaultOcgConfig.dictLookup("ON", &on);
if (on.isArray()) {
// ON is an optional element
for (int i = 0; i < on.arrayGetLength(); ++i) {
Object reference;
on.arrayGetNF(i, &reference);
if (!reference.isRef()) {
// there can be null entries
reference.free();
break;
}
OptionalContentGroup *group = findOcgByRef( reference.getRef() );
reference.free();
if (!group) {
error(-1, "Couldn't find group for reference");
break;
}
group->setState(OptionalContentGroup::On);
}
}
on.free();
Object off;
defaultOcgConfig.dictLookup("OFF", &off);
if (off.isArray()) {
// OFF is an optional element
for (int i = 0; i < off.arrayGetLength(); ++i) {
Object reference;
off.arrayGetNF(i, &reference);
if (!reference.isRef()) {
// there can be null entries
reference.free();
break;
}
OptionalContentGroup *group = findOcgByRef( reference.getRef() );
reference.free();
if (!group) {
error(-1, "Couldn't find group for reference to set OFF");
break;
}
group->setState(OptionalContentGroup::Off);
}
}
off.free();
defaultOcgConfig.dictLookup("Order", &order);
defaultOcgConfig.dictLookup("RBGroups", &rbgroups);
ocgList.free();
defaultOcgConfig.free();
}
bool PdfPlug::convert(QString fn)
{
bool firstPg = true;
int currentLayer = m_Doc->activeLayer();
int baseLayer = m_Doc->activeLayer();
importedColors.clear();
if(progressDialog)
{
progressDialog->setOverallProgress(2);
progressDialog->setLabel("GI", tr("Generating Items"));
qApp->processEvents();
}
QFile f(fn);
oldDocItemCount = m_Doc->Items->count();
if (progressDialog)
{
progressDialog->setBusyIndicator("GI");
qApp->processEvents();
}
globalParams = new GlobalParams();
if (globalParams)
{
GooString *fname = new GooString(QFile::encodeName(fn).data());
globalParams->setErrQuiet(gTrue);
GBool hasOcg = gFalse;
QList<OptionalContentGroup*> ocgGroups;
// globalParams->setPrintCommands(gTrue);
PDFDoc *pdfDoc = new PDFDoc(fname, 0, 0, 0);
if (pdfDoc)
{
if (pdfDoc->isOk())
{
double hDPI = 72.0;
double vDPI = 72.0;
int firstPage = 1;
int lastPage = pdfDoc->getNumPages();
SlaOutputDev *dev = new SlaOutputDev(m_Doc, &Elements, &importedColors, importerFlags);
if (dev->isOk())
{
OCGs* ocg = pdfDoc->getOptContentConfig();
if (ocg)
{
hasOcg = ocg->hasOCGs();
if (hasOcg)
{
QStringList ocgNames;
Array *order = ocg->getOrderArray();
if (order)
{
for (int i = 0; i < order->getLength (); ++i)
{
Object orderItem;
order->get(i, &orderItem);
if (orderItem.isDict())
{
Object ref;
order->getNF(i, &ref);
if (ref.isRef())
{
OptionalContentGroup *oc = ocg->findOcgByRef(ref.getRef());
QString ocgName = UnicodeParsedString(oc->getName());
if (!ocgNames.contains(ocgName))
{
ocgGroups.prepend(oc);
ocgNames.append(ocgName);
}
}
ref.free();
}
else
{
GooList *ocgs;
int i;
ocgs = ocg->getOCGs ();
for (i = 0; i < ocgs->getLength (); ++i)
{
OptionalContentGroup *oc = (OptionalContentGroup *)ocgs->get(i);
QString ocgName = UnicodeParsedString(oc->getName());
if (!ocgNames.contains(ocgName))
{
ocgGroups.prepend(oc);
ocgNames.append(ocgName);
}
}
}
}
}
else
{
GooList *ocgs;
int i;
ocgs = ocg->getOCGs ();
for (i = 0; i < ocgs->getLength (); ++i)
{
OptionalContentGroup *oc = (OptionalContentGroup *)ocgs->get(i);
QString ocgName = UnicodeParsedString(oc->getName());
if (!ocgNames.contains(ocgName))
{
ocgGroups.prepend(oc);
ocgNames.append(ocgName);
}
}
}
}
}
GBool useMediaBox = gTrue;
GBool crop = gFalse;
GBool printing = gFalse;
dev->startDoc(pdfDoc, pdfDoc->getXRef(), pdfDoc->getCatalog());
int rotate = pdfDoc->getPageRotate(firstPage);
if (importerFlags & LoadSavePlugin::lfCreateDoc)
{
// POPPLER_VERSION appeared in 0.19.0 first
#ifdef POPPLER_VERSION
if (hasOcg)
{
QString actL = m_Doc->activeLayerName();
for (int a = 0; a < ocgGroups.count(); a++)
{
OptionalContentGroup *oc = ocgGroups[a];
if (actL != UnicodeParsedString(oc->getName()))
currentLayer = m_Doc->addLayer(UnicodeParsedString(oc->getName()), false);
else
currentLayer = m_Doc->layerIDFromName(UnicodeParsedString(oc->getName()));
// POPPLER_VERSION appeared in 0.19.0 first
#ifdef POPPLER_VERSION
if ((oc->getViewState() == OptionalContentGroup::ocUsageOn) || (oc->getViewState() == OptionalContentGroup::ocUsageUnset))
m_Doc->setLayerVisible(currentLayer, true);
else
m_Doc->setLayerVisible(currentLayer, false);
if ((oc->getPrintState() == OptionalContentGroup::ocUsageOn) || (oc->getPrintState() == OptionalContentGroup::ocUsageUnset))
m_Doc->setLayerPrintable(currentLayer, true);
else
m_Doc->setLayerPrintable(currentLayer, false);
#else
if (oc->getState() == OptionalContentGroup::On)
{
m_Doc->setLayerVisible(currentLayer, true);
m_Doc->setLayerPrintable(currentLayer, true);
}
else
{
m_Doc->setLayerVisible(currentLayer, false);
m_Doc->setLayerPrintable(currentLayer, false);
}
#endif
oc->setState(OptionalContentGroup::Off);
}
dev->layersSetByOCG = true;
}
#endif
Object info;
pdfDoc->getDocInfo(&info);
if (info.isDict())
{
Object obj;
GooString *s1;
Dict *infoDict = info.getDict();
if (infoDict->lookup((char*)"Title", &obj )->isString())
{
s1 = obj.getString();
m_Doc->documentInfo().setTitle(UnicodeParsedString(obj.getString()));
obj.free();
}
if (infoDict->lookup((char*)"Author", &obj )->isString())
{
s1 = obj.getString();
m_Doc->documentInfo().setAuthor(UnicodeParsedString(obj.getString()));
obj.free();
}
if (infoDict->lookup((char*)"Subject", &obj )->isString())
{
s1 = obj.getString();
m_Doc->documentInfo().setSubject(UnicodeParsedString(obj.getString()));
obj.free();
}
if (infoDict->lookup((char*)"Keywords", &obj )->isString())
{
s1 = obj.getString();
m_Doc->documentInfo().setKeywords(UnicodeParsedString(obj.getString()));
obj.free();
}
}
info.free();
for (int pp = 0; pp < lastPage; pp++)
{
m_Doc->setActiveLayer(baseLayer);
if (firstPg)
firstPg = false;
else
m_Doc->addPage(pp);
m_Doc->currentPage()->setInitialHeight(pdfDoc->getPageMediaHeight(pp + 1));
m_Doc->currentPage()->setInitialWidth(pdfDoc->getPageMediaWidth(pp + 1));
m_Doc->currentPage()->setHeight(pdfDoc->getPageMediaHeight(pp + 1));
m_Doc->currentPage()->setWidth(pdfDoc->getPageMediaWidth(pp + 1));
m_Doc->currentPage()->MPageNam = CommonStrings::trMasterPageNormal;
m_Doc->currentPage()->m_pageSize = "Custom";
m_Doc->setPageSize("Custom");
m_Doc->reformPages(true);
if (hasOcg)
{
for (int a = 0; a < ocgGroups.count(); a++)
{
OptionalContentGroup *oc = ocgGroups[a];
// m_Doc->setActiveLayer(UnicodeParsedString(oc->getName()));
// currentLayer = m_Doc->activeLayer();
oc->setState(OptionalContentGroup::On);
// pdfDoc->displayPage(dev, pp + 1, hDPI, vDPI, rotate, useMediaBox, crop, printing);
// oc->setState(OptionalContentGroup::Off);
}
pdfDoc->displayPage(dev, pp + 1, hDPI, vDPI, rotate, useMediaBox, crop, printing);
}
else
pdfDoc->displayPage(dev, pp + 1, hDPI, vDPI, rotate, useMediaBox, crop, printing);
}
}
else
{
if (hasOcg)
{
for (int a = 0; a < ocgGroups.count(); a++)
{
ocgGroups[a]->setState(OptionalContentGroup::On);
}
}
pdfDoc->displayPage(dev, firstPage, hDPI, vDPI, rotate, useMediaBox, crop, printing);
}
}
delete dev;
}
}
delete pdfDoc;
}
delete globalParams;
globalParams = 0;
// qDebug() << "converting finished";
// qDebug() << "Imported" << Elements.count() << "Elements";
if (Elements.count() == 0)
{
if (importedColors.count() != 0)
{
for (int cd = 0; cd < importedColors.count(); cd++)
{
m_Doc->PageColors.remove(importedColors[cd]);
}
}
}
if (progressDialog)
progressDialog->close();
return true;
}
void TestOptionalContent::checkVisibilitySetting()
{
globalParams = new GlobalParams();
GooString *fileName = new GooString(TESTDATADIR "/unittestcases/vis_policy_test.pdf");
PDFDoc *doc = new PDFDoc( fileName );
QVERIFY( doc );
OCGs *ocgs = doc->getOptContentConfig();
QVERIFY( ocgs );
XRef *xref = doc->getXRef();
Object obj;
// In this test, both Ref(21,0) and Ref(28,0) start On,
// based on the file settings
Object ref21obj;
ref21obj.initRef( 21, 0 );
Ref ref21 = ref21obj.getRef();
OptionalContentGroup *ocgA = ocgs->findOcgByRef( ref21 );
QVERIFY( ocgA );
QVERIFY( (ocgA->getName()->cmp("A")) == 0 );
QCOMPARE( ocgA->getState(), OptionalContentGroup::On );
Object ref28obj;
ref28obj.initRef( 28, 0 );
Ref ref28 = ref28obj.getRef();
OptionalContentGroup *ocgB = ocgs->findOcgByRef( ref28 );
QVERIFY( ocgB );
QVERIFY( (ocgB->getName()->cmp("B")) == 0 );
QCOMPARE( ocgB->getState(), OptionalContentGroup::On );
// turn one Off
ocgA->setState( OptionalContentGroup::Off );
// AnyOn, one element array:
// 22 0 obj<</Type/OCMD/OCGs[21 0 R]/P/AnyOn>>endobj
xref->fetch( 22, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// Same again, looking for any leaks or dubious free()'s
xref->fetch( 22, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AnyOff, one element array:
// 29 0 obj<</Type/OCMD/OCGs[21 0 R]/P/AnyOff>>endobj
xref->fetch( 29, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AllOn, one element array:
// 36 0 obj<</Type/OCMD/OCGs[28 0 R]/P/AllOn>>endobj
xref->fetch( 36, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AllOff, one element array:
// 43 0 obj<</Type/OCMD/OCGs[28 0 R]/P/AllOff>>endobj
xref->fetch( 43, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AnyOn, multi-element array:
// 50 0 obj<</Type/OCMD/OCGs[21 0 R 28 0 R]/P/AnyOn>>endobj
xref->fetch( 50, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AnyOff, multi-element array:
// 57 0 obj<</Type/OCMD/P/AnyOff/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 57, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AllOn, multi-element array:
// 64 0 obj<</Type/OCMD/P/AllOn/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 64, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AllOff, multi-element array:
// 71 0 obj<</Type/OCMD/P/AllOff/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 71, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// Turn the other one off as well (i.e. both are Off)
ocgB->setState(OptionalContentGroup::Off);
// AnyOn, one element array:
// 22 0 obj<</Type/OCMD/OCGs[21 0 R]/P/AnyOn>>endobj
xref->fetch( 22, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// Same again, looking for any leaks or dubious free()'s
xref->fetch( 22, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AnyOff, one element array:
// 29 0 obj<</Type/OCMD/OCGs[21 0 R]/P/AnyOff>>endobj
xref->fetch( 29, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AllOn, one element array:
// 36 0 obj<</Type/OCMD/OCGs[28 0 R]/P/AllOn>>endobj
xref->fetch( 36, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AllOff, one element array:
// 43 0 obj<</Type/OCMD/OCGs[28 0 R]/P/AllOff>>endobj
xref->fetch( 43, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AnyOn, multi-element array:
// 50 0 obj<</Type/OCMD/OCGs[21 0 R 28 0 R]/P/AnyOn>>endobj
xref->fetch( 50, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AnyOff, multi-element array:
// 57 0 obj<</Type/OCMD/P/AnyOff/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 57, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AllOn, multi-element array:
// 64 0 obj<</Type/OCMD/P/AllOn/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 64, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AllOff, multi-element array:
// 71 0 obj<</Type/OCMD/P/AllOff/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 71, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// Turn the first one on again (21 is On, 28 is Off)
ocgA->setState(OptionalContentGroup::On);
// AnyOn, one element array:
// 22 0 obj<</Type/OCMD/OCGs[21 0 R]/P/AnyOn>>endobj
xref->fetch( 22, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// Same again, looking for any leaks or dubious free()'s
xref->fetch( 22, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AnyOff, one element array:
// 29 0 obj<</Type/OCMD/OCGs[21 0 R]/P/AnyOff>>endobj
xref->fetch( 29, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AllOn, one element array:
// 36 0 obj<</Type/OCMD/OCGs[28 0 R]/P/AllOn>>endobj
xref->fetch( 36, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AllOff, one element array:
// 43 0 obj<</Type/OCMD/OCGs[28 0 R]/P/AllOff>>endobj
xref->fetch( 43, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AnyOn, multi-element array:
// 50 0 obj<</Type/OCMD/OCGs[21 0 R 28 0 R]/P/AnyOn>>endobj
xref->fetch( 50, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AnyOff, multi-element array:
// 57 0 obj<</Type/OCMD/P/AnyOff/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 57, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), true );
obj.free();
// AllOn, multi-element array:
// 64 0 obj<</Type/OCMD/P/AllOn/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 64, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
// AllOff, multi-element array:
// 71 0 obj<</Type/OCMD/P/AllOff/OCGs[21 0 R 28 0 R]>>endobj
xref->fetch( 71, 0, &obj );
QVERIFY( obj.isDict() );
QCOMPARE( ocgs->optContentIsVisible( &obj ), false );
obj.free();
delete doc;
delete globalParams;
}