bool SkPDFDocument::emitPDF(SkWStream* stream) {
if (fPages.isEmpty()) {
return false;
}
for (int i = 0; i < fPages.count(); i++) {
if (fPages[i] == NULL) {
return false;
}
}
fFirstPageResources = SkNEW(SkTSet<SkPDFObject*>);
fOtherPageResources = SkNEW(SkTSet<SkPDFObject*>);
// We haven't emitted the document before if fPageTree is empty.
if (fPageTree.isEmpty()) {
SkPDFDict* pageTreeRoot;
SkPDFPage::GeneratePageTree(fPages, fCatalog.get(), &fPageTree,
&pageTreeRoot);
fDocCatalog->insert("Pages", new SkPDFObjRef(pageTreeRoot))->unref();
/* TODO(vandebo): output intent
SkAutoTUnref<SkPDFDict> outputIntent = new SkPDFDict("OutputIntent");
outputIntent->insert("S", new SkPDFName("GTS_PDFA1"))->unref();
outputIntent->insert("OutputConditionIdentifier",
new SkPDFString("sRGB"))->unref();
SkAutoTUnref<SkPDFArray> intentArray = new SkPDFArray;
intentArray->append(outputIntent.get());
fDocCatalog->insert("OutputIntent", intentArray.get());
*/
SkAutoTUnref<SkPDFDict> dests(SkNEW(SkPDFDict));
bool firstPage = true;
/* The references returned in newResources are transfered to
* fFirstPageResources or fOtherPageResources depending on firstPage and
* knownResources doesn't have a reference but just relies on the other
* two sets to maintain a reference.
*/
SkTSet<SkPDFObject*> knownResources;
// mergeInto returns the number of duplicates.
// If there are duplicates, there is a bug and we mess ref counting.
SkDEBUGCODE(int duplicates =) knownResources.mergeInto(*fFirstPageResources);
SkASSERT(duplicates == 0);
for (int i = 0; i < fPages.count(); i++) {
if (i == 1) {
firstPage = false;
SkDEBUGCODE(duplicates =) knownResources.mergeInto(*fOtherPageResources);
}
SkTSet<SkPDFObject*> newResources;
fPages[i]->finalizePage(
fCatalog.get(), firstPage, knownResources, &newResources);
addResourcesToCatalog(firstPage, &newResources, fCatalog.get());
if (firstPage) {
SkDEBUGCODE(duplicates =) fFirstPageResources->mergeInto(newResources);
} else {
bool SkPDFDocument::emitPDF(SkWStream* stream) {
if (fPages.isEmpty()) {
return false;
}
for (int i = 0; i < fPages.count(); i++) {
if (fPages[i] == NULL) {
return false;
}
}
// We haven't emitted the document before if fPageTree is empty.
if (fPageTree.isEmpty()) {
SkPDFDict* pageTreeRoot;
SkPDFPage::GeneratePageTree(fPages, fCatalog.get(), &fPageTree,
&pageTreeRoot);
fDocCatalog->insert("Pages", new SkPDFObjRef(pageTreeRoot))->unref();
/* TODO(vandebo): output intent
SkRefPtr<SkPDFDict> outputIntent = new SkPDFDict("OutputIntent");
outputIntent->unref(); // SkRefPtr and new both took a reference.
outputIntent->insert("S", new SkPDFName("GTS_PDFA1"))->unref();
outputIntent->insert("OutputConditionIdentifier",
new SkPDFString("sRGB"))->unref();
SkRefPtr<SkPDFArray> intentArray = new SkPDFArray;
intentArray->unref(); // SkRefPtr and new both took a reference.
intentArray->append(outputIntent.get());
fDocCatalog->insert("OutputIntent", intentArray.get());
*/
bool firstPage = true;
for (int i = 0; i < fPages.count(); i++) {
int resourceCount = fPageResources.count();
fPages[i]->finalizePage(fCatalog.get(), firstPage, &fPageResources);
addResourcesToCatalog(resourceCount, firstPage, &fPageResources,
fCatalog.get());
if (i == 0) {
firstPage = false;
fSecondPageFirstResourceIndex = fPageResources.count();
}
}
// Build font subsetting info before proceeding.
perform_font_subsetting(fCatalog.get(), fPages, &fSubstitutes);
// Figure out the size of things and inform the catalog of file offsets.
off_t fileOffset = headerSize();
fileOffset += fCatalog->setFileOffset(fDocCatalog.get(),
(size_t) fileOffset);
fileOffset += fCatalog->setFileOffset(fPages[0], (size_t) fileOffset);
fileOffset += fPages[0]->getPageSize(fCatalog.get(),
(size_t) fileOffset);
for (int i = 0; i < fSecondPageFirstResourceIndex; i++) {
fileOffset += fCatalog->setFileOffset(fPageResources[i],
(size_t) fileOffset);
}
// Add the size of resources of substitute objects used on page 1.
fileOffset += fCatalog->setSubstituteResourcesOffsets(fileOffset, true);
if (fPages.count() > 1) {
// TODO(vandebo): For linearized format, save the start of the
// first page xref table and calculate the size.
}
for (int i = 0; i < fPageTree.count(); i++) {
fileOffset += fCatalog->setFileOffset(fPageTree[i],
(size_t) fileOffset);
}
for (int i = 1; i < fPages.count(); i++) {
fileOffset += fPages[i]->getPageSize(fCatalog.get(),
(size_t) fileOffset);
}
for (int i = fSecondPageFirstResourceIndex;
i < fPageResources.count();
i++) {
fileOffset += fCatalog->setFileOffset(fPageResources[i],
(size_t) fileOffset);
}
fileOffset += fCatalog->setSubstituteResourcesOffsets(fileOffset,
false);
fXRefFileOffset = fileOffset;
}
emitHeader(stream);
fDocCatalog->emitObject(stream, fCatalog.get(), true);
fPages[0]->emitObject(stream, fCatalog.get(), true);
fPages[0]->emitPage(stream, fCatalog.get());
for (int i = 0; i < fSecondPageFirstResourceIndex; i++) {
fPageResources[i]->emit(stream, fCatalog.get(), true);
}
fCatalog->emitSubstituteResources(stream, true);
// TODO(vandebo): Support linearized format
// if (fPages.size() > 1) {
// // TODO(vandebo): Save the file offset for the first page xref table.
// fCatalog->emitXrefTable(stream, true);
// }
for (int i = 0; i < fPageTree.count(); i++) {
fPageTree[i]->emitObject(stream, fCatalog.get(), true);
}
for (int i = 1; i < fPages.count(); i++) {
fPages[i]->emitPage(stream, fCatalog.get());
}
for (int i = fSecondPageFirstResourceIndex;
i < fPageResources.count();
i++) {
fPageResources[i]->emit(stream, fCatalog.get(), true);
}
fCatalog->emitSubstituteResources(stream, false);
int64_t objCount = fCatalog->emitXrefTable(stream, fPages.count() > 1);
emitFooter(stream, objCount);
return true;
}
