diff options
Diffstat (limited to 'src/gui/painting/qpdf.cpp')
| -rw-r--r-- | src/gui/painting/qpdf.cpp | 263 |
1 files changed, 201 insertions, 62 deletions
diff --git a/src/gui/painting/qpdf.cpp b/src/gui/painting/qpdf.cpp index 716cf35ee6d..e019bf7912c 100644 --- a/src/gui/painting/qpdf.cpp +++ b/src/gui/painting/qpdf.cpp @@ -22,6 +22,7 @@ #include <qtemporaryfile.h> #include <qtimezone.h> #include <quuid.h> +#include <qxmlstream.h> #include <map> @@ -1043,6 +1044,12 @@ void QPdfEngine::drawHyperlink(const QRectF &r, const QUrl &url) { Q_D(QPdfEngine); + // PDF/X-4 (§ 6.17) does not allow annotations that don't lie + // outside the BleedBox/TrimBox, so don't emit an hyperlink + // annotation at all. + if (d->pdfVersion == QPdfEngine::Version_X4) + return; + const uint annot = d->addXrefEntry(-1); const QByteArray urlascii = url.toEncoded(); int len = urlascii.size(); @@ -1556,6 +1563,7 @@ void QPdfEnginePrivate::writeHeader() "1.4", // Version_1_4 "1.4", // Version_A1b "1.6", // Version_1_6 + "1.6", // Version_X4 }; static const size_t numMappings = sizeof mapping / sizeof *mapping; const char *verStr = mapping[size_t(pdfVersion) < numMappings ? pdfVersion : 0]; @@ -1563,16 +1571,27 @@ void QPdfEnginePrivate::writeHeader() xprintf("%%PDF-%s\n", verStr); xprintf("%%\303\242\303\243\n"); - writeInfo(); +#if QT_CONFIG(timezone) + const QDateTime now = QDateTime::currentDateTime(QTimeZone::systemTimeZone()); +#else + const QDateTime now = QDateTime::currentDateTimeUtc(); +#endif - int metaDataObj = -1; - int outputIntentObj = -1; - if (pdfVersion == QPdfEngine::Version_A1b || !xmpDocumentMetadata.isEmpty()) { - metaDataObj = writeXmpDocumentMetaData(); - } - if (pdfVersion == QPdfEngine::Version_A1b) { - outputIntentObj = writeOutputIntent(); - } + writeInfo(now); + + const int metaDataObj = writeXmpDocumentMetaData(now); + const int outputIntentObj = [&]() { + switch (pdfVersion) { + case QPdfEngine::Version_1_4: + case QPdfEngine::Version_1_6: + break; + case QPdfEngine::Version_A1b: + case QPdfEngine::Version_X4: + return writeOutputIntent(); + } + + return -1; + }(); catalog = addXrefEntry(-1); pageRoot = requestObject(); @@ -1587,10 +1606,9 @@ void QPdfEnginePrivate::writeHeader() << "/Pages " << pageRoot << "0 R\n" << "/Names " << namesRoot << "0 R\n"; - if (pdfVersion == QPdfEngine::Version_A1b || !xmpDocumentMetadata.isEmpty()) - s << "/Metadata " << metaDataObj << "0 R\n"; + s << "/Metadata " << metaDataObj << "0 R\n"; - if (pdfVersion == QPdfEngine::Version_A1b) + if (outputIntentObj >= 0) s << "/OutputIntents [" << outputIntentObj << "0 R]\n"; s << ">>\n" @@ -1716,64 +1734,171 @@ void QPdfEnginePrivate::writeColor(ColorDomain domain, const QColor &color) } } -void QPdfEnginePrivate::writeInfo() +void QPdfEnginePrivate::writeInfo(const QDateTime &date) { info = addXrefEntry(-1); - xprintf("<<\n/Title "); + write("<<\n/Title "); printString(title); - xprintf("\n/Creator "); + write("\n/Creator "); printString(creator); - xprintf("\n/Producer "); + write("\n/Producer "); printString(QString::fromLatin1("Qt " QT_VERSION_STR)); - QDateTime now = QDateTime::currentDateTime(); - QTime t = now.time(); - QDate d = now.date(); - xprintf("\n/CreationDate (D:%d%02d%02d%02d%02d%02d", - d.year(), - d.month(), - d.day(), - t.hour(), - t.minute(), - t.second()); - int offset = now.offsetFromUtc(); - int hours = (offset / 60) / 60; - int mins = (offset / 60) % 60; - if (offset < 0) - xprintf("-%02d'%02d')\n", -hours, -mins); - else if (offset > 0) - xprintf("+%02d'%02d')\n", hours , mins); - else - xprintf("Z)\n"); - xprintf("/Trapped /False\n"); - xprintf(">>\n" - "endobj\n"); + + const QTime t = date.time(); + const QDate d = date.date(); + // (D:YYYYMMDDHHmmSSOHH'mm') + constexpr size_t formattedDateSize = 26; + char formattedDate[formattedDateSize]; + const int year = qBound(0, d.year(), 9999); // ASN.1, max 4 digits + auto printedSize = qsnprintf(formattedDate, + formattedDateSize, + "(D:%04d%02d%02d%02d%02d%02d", + year, + d.month(), + d.day(), + t.hour(), + t.minute(), + t.second()); + const int offset = date.offsetFromUtc(); + const int hours = (offset / 60) / 60; + const int mins = (offset / 60) % 60; + if (offset < 0) { + qsnprintf(formattedDate + printedSize, + formattedDateSize - printedSize, + "-%02d'%02d')", -hours, -mins); + } else if (offset > 0) { + qsnprintf(formattedDate + printedSize, + formattedDateSize - printedSize, + "+%02d'%02d')", hours, mins); + } else { + qsnprintf(formattedDate + printedSize, + formattedDateSize - printedSize, + "Z)"); + } + + write("\n/CreationDate "); + write(formattedDate); + write("\n/ModDate "); + write(formattedDate); + + write("\n/Trapped /False\n" + "2\n" + "endobj\n"); } -int QPdfEnginePrivate::writeXmpDocumentMetaData() +int QPdfEnginePrivate::writeXmpDocumentMetaData(const QDateTime &date) { const int metaDataObj = addXrefEntry(-1); QByteArray metaDataContent; - if (xmpDocumentMetadata.isEmpty()) { + if (!xmpDocumentMetadata.isEmpty()) { + metaDataContent = xmpDocumentMetadata; + } else { const QString producer(QString::fromLatin1("Qt " QT_VERSION_STR)); + const QString metaDataDate = date.toString(Qt::ISODate); + + using namespace Qt::Literals; + constexpr QLatin1String xmlNS = "http://www.w3.org/XML/1998/namespace"_L1; + + constexpr QLatin1String adobeNS = "adobe:ns:meta/"_L1; + constexpr QLatin1String rdfNS = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"_L1; + constexpr QLatin1String dcNS = "http://purl.org/dc/elements/1.1/"_L1; + constexpr QLatin1String xmpNS = "http://ns.adobe.com/xap/1.0/"_L1; + constexpr QLatin1String xmpMMNS = "http://ns.adobe.com/xap/1.0/mm/"_L1; + constexpr QLatin1String pdfNS = "http://ns.adobe.com/pdf/1.3/"_L1; + constexpr QLatin1String pdfaidNS = "http://www.aiim.org/pdfa/ns/id/"_L1; + constexpr QLatin1String pdfxidNS = "http://www.npes.org/pdfx/ns/id/"_L1; + + QBuffer output(&metaDataContent); + output.open(QIODevice::WriteOnly); + output.write("<?xpacket begin='' id='W5M0MpCehiHzreSzNTczkc9d'?>"); + + QXmlStreamWriter w(&output); + w.setAutoFormatting(true); + w.writeNamespace(adobeNS, "x"); + w.writeNamespace(rdfNS, "rdf"); + w.writeNamespace(dcNS, "dc"); + w.writeNamespace(xmpNS, "xmp"); + w.writeNamespace(xmpMMNS, "xmpMM"); + w.writeNamespace(pdfNS, "pdf"); + w.writeNamespace(pdfaidNS, "pdfaid"); + w.writeNamespace(pdfxidNS, "pdfxid"); + + w.writeStartElement(adobeNS, "xmpmeta"); + w.writeStartElement(rdfNS, "RDF"); + + /* + XMP says: "The recommended approach is to have either a + single rdf:Description element containing all XMP + properties or a separate rdf:Description element for each + XMP property namespace." + We do the the latter. + */ + + // DC + w.writeStartElement(rdfNS, "Description"); + w.writeAttribute(rdfNS, "about", ""); + w.writeStartElement(dcNS, "title"); + w.writeStartElement(rdfNS, "Alt"); + w.writeStartElement(rdfNS, "li"); + w.writeAttribute(xmlNS, "lang", "x-default"); + w.writeCharacters(title); + w.writeEndElement(); + w.writeEndElement(); + w.writeEndElement(); + w.writeEndElement(); + + // PDF + w.writeStartElement(rdfNS, "Description"); + w.writeAttribute(rdfNS, "about", ""); + w.writeAttribute(pdfNS, "Producer", producer); + w.writeAttribute(pdfNS, "Trapped", "false"); + w.writeEndElement(); + + // XMP + w.writeStartElement(rdfNS, "Description"); + w.writeAttribute(rdfNS, "about", ""); + w.writeAttribute(xmpNS, "CreatorTool", creator); + w.writeAttribute(xmpNS, "CreateDate", metaDataDate); + w.writeAttribute(xmpNS, "ModifyDate", metaDataDate); + w.writeAttribute(xmpNS, "MetadataDate", metaDataDate); + w.writeEndElement(); + + // XMPMM + w.writeStartElement(rdfNS, "Description"); + w.writeAttribute(rdfNS, "about", ""); + w.writeAttribute(xmpMMNS, "DocumentID", "uuid:"_L1 + documentId.toString(QUuid::WithoutBraces)); + w.writeAttribute(xmpMMNS, "VersionID", "1"); + w.writeAttribute(xmpMMNS, "RenditionClass", "default"); + w.writeEndElement(); + + // Version-specific + switch (pdfVersion) { + case QPdfEngine::Version_1_4: + break; + case QPdfEngine::Version_A1b: + w.writeStartElement(rdfNS, "Description"); + w.writeAttribute(rdfNS, "about", ""); + w.writeAttribute(pdfaidNS, "part", "1"); + w.writeAttribute(pdfaidNS, "conformance", "B"); + w.writeEndElement(); + break; + case QPdfEngine::Version_1_6: + break; + case QPdfEngine::Version_X4: + w.writeStartElement(rdfNS, "Description"); + w.writeAttribute(rdfNS, "about", ""); + w.writeAttribute(pdfxidNS, "GTS_PDFXVersion", "PDF/X-4"); + w.writeEndElement(); + break; + } -#if QT_CONFIG(timezone) - const QDateTime now = QDateTime::currentDateTime(QTimeZone::systemTimeZone()); -#else - const QDateTime now = QDateTime::currentDateTimeUtc(); -#endif - const QString metaDataDate = now.toString(Qt::ISODate); + w.writeEndElement(); // </RDF> + w.writeEndElement(); // </xmpmeta> - QFile metaDataFile(":/qpdf/qpdfa_metadata.xml"_L1); - bool ok = metaDataFile.open(QIODevice::ReadOnly); - Q_ASSERT(ok); - metaDataContent = QString::fromUtf8(metaDataFile.readAll()).arg(producer.toHtmlEscaped(), - title.toHtmlEscaped(), - creator.toHtmlEscaped(), - metaDataDate).toUtf8(); + w.writeEndDocument(); + output.write("<?xpacket end='w'?>"); } - else - metaDataContent = xmpDocumentMetadata; xprintf("<<\n" "/Type /Metadata /Subtype /XML\n" @@ -1821,7 +1946,20 @@ int QPdfEnginePrivate::writeOutputIntent() { xprintf("<<\n"); xprintf("/Type /OutputIntent\n"); - xprintf("/S/GTS_PDFA1\n"); + + switch (pdfVersion) { + case QPdfEngine::Version_1_4: + case QPdfEngine::Version_1_6: + Q_UNREACHABLE(); // no output intent for these versions + break; + case QPdfEngine::Version_A1b: + xprintf("/S/GTS_PDFA1\n"); + break; + case QPdfEngine::Version_X4: + xprintf("/S/GTS_PDFX\n"); + break; + } + xprintf("/OutputConditionIdentifier (sRGB_IEC61966-2-1_black_scaled)\n"); xprintf("/DestOutputProfile %d 0 R\n", colorProfile); xprintf("/Info(sRGB IEC61966 v2.1 with black scaling)\n"); @@ -2242,11 +2380,8 @@ void QPdfEnginePrivate::writeTail() << "/Info " << info << "0 R\n" << "/Root " << catalog << "0 R\n"; - if (pdfVersion == QPdfEngine::Version_A1b) { - const QString uniqueId = QUuid::createUuid().toString(); - const QByteArray fileIdentifier = QCryptographicHash::hash(uniqueId.toLatin1(), QCryptographicHash::Md5).toHex(); - s << "/ID [ <" << fileIdentifier << "> <" << fileIdentifier << "> ]\n"; - } + const QByteArray id = documentId.toString(QUuid::WithoutBraces).toUtf8().toHex(); + s << "/ID [ <" << id << "> <" << id << "> ]\n"; s << ">>\n" << "startxref\n" << xrefPositions.constLast() << "\n" @@ -3198,7 +3333,11 @@ void QPdfEnginePrivate::drawTextItem(const QPointF &p, const QTextItemInt &ti) const bool isLink = ti.charFormat.hasProperty(QTextFormat::AnchorHref); const bool isAnchor = ti.charFormat.hasProperty(QTextFormat::AnchorName); - if (isLink || isAnchor) { + // PDF/X-4 (§ 6.17) does not allow annotations that don't lie + // outside the BleedBox/TrimBox, so don't emit an hyperlink + // annotation at all. + const bool isX4 = pdfVersion == QPdfEngine::Version_X4; + if ((isLink && !isX4) || isAnchor) { qreal size = ti.fontEngine->fontDef.pixelSize; int synthesized = ti.fontEngine->synthesized(); qreal stretch = synthesized & QFontEngine::SynthesizedStretch ? ti.fontEngine->fontDef.stretch/100. : 1.; |