public void CanGeneratePdfAFile(PdfAStandard standard)
{
var builder = new PdfDocumentBuilder
{
ArchiveStandard = standard
};
var page = builder.AddPage(PageSize.A4);
var imgBytes = File.ReadAllBytes(IntegrationHelpers.GetDocumentPath("smile-250-by-160.jpg", false));
page.AddJpeg(imgBytes, new PdfRectangle(50, 70, 150, 130));
var font = builder.AddTrueTypeFont(TrueTypeTestHelper.GetFileBytes("Roboto-Regular.ttf"));
page.AddText($"Howdy PDF/{standard}!", 10, new PdfPoint(25, 700), font);
var bytes = builder.Build();
WriteFile(nameof(CanGeneratePdfAFile) + standard, bytes);
using (var pdf = PdfDocument.Open(bytes, ParsingOptions.LenientParsingOff))
{
Assert.Equal(1, pdf.NumberOfPages);
Assert.True(pdf.TryGetXmpMetadata(out var xmp));
Assert.NotNull(xmp.GetXDocument());
}
}
public static void Obey(Dictionary <NameToken, IToken> catalog, Func <IToken, ObjectToken> writerFunc,
PdfDocumentBuilder.DocumentInformationBuilder documentInformationBuilder,
PdfAStandard archiveStandard)
{
catalog[NameToken.OutputIntents] = OutputIntentsFactory.GetOutputIntentsArray(writerFunc);
var xmpStream = XmpWriter.GenerateXmpStream(documentInformationBuilder, 1.7m, archiveStandard);
var xmpObj = writerFunc(xmpStream);
catalog[NameToken.Metadata] = new IndirectReferenceToken(xmpObj.Number);
}
public static StreamToken GenerateXmpStream(PdfDocumentBuilder.DocumentInformationBuilder builder, decimal version,
PdfAStandard standard)
{
XNamespace xmpMeta = XmpMetaNamespace;
XNamespace rdf = RdfNamespace;
var emptyRdfAbout = new XAttribute(rdf + "about", string.Empty);
var rdfDescriptionElement = new XElement(rdf + "Description", emptyRdfAbout);
// Dublin Core Schema
AddElementsForSchema(rdfDescriptionElement, DublinCorePrefix, DublinCoreNamespace, builder,
new List <SchemaMapper>
{
new SchemaMapper("format", b => "application/pdf"),
new SchemaMapper("creator", b => b.Author),
new SchemaMapper("description", b => b.Subject),
new SchemaMapper("title", b => b.Title)
});
// XMP Basic Schema
AddElementsForSchema(rdfDescriptionElement, XmpBasicPrefix, XmpBasicNamespace, builder,
new List <SchemaMapper>
{
new SchemaMapper("CreatorTool", b => b.Creator)
});
// Adobe PDF Schema
AddElementsForSchema(rdfDescriptionElement, AdobePdfPrefix, AdobePdfNamespace, builder,
new List <SchemaMapper>
{
new SchemaMapper("PDFVersion", b => "1.7"),
new SchemaMapper("Producer", b => b.Producer)
});
var pdfAIdContainer = GetVersionAndConformanceLevelIdentificationElement(rdf, emptyRdfAbout, standard);
var document = new XDocument(
new XElement(xmpMeta + "xmpmeta", GetNamespaceAttribute(XmpMetaPrefix, XmpMetaNamespace),
new XAttribute(xmpMeta + "xmptk", Xmptk),
new XElement(rdf + "RDF",
GetNamespaceAttribute("rdf", rdf),
rdfDescriptionElement,
pdfAIdContainer
)
)
);
var xml = document.ToString(SaveOptions.None).Replace("\r\n", "\n");
xml = $"<?xpacket begin=\"\ufeff\" id=\"W5M0MpCehiHzreSzNTczkc9d\"?>\n{xml}\n<?xpacket end=\"r\"?>";
var bytes = Encoding.UTF8.GetBytes(xml);
return(new StreamToken(new DictionaryToken(new Dictionary <NameToken, IToken>
{
{ NameToken.Type, NameToken.Metadata },
{ NameToken.Subtype, NameToken.Xml },
{ NameToken.Length, new NumericToken(bytes.Length) }
}), bytes));
}
private static XElement GetVersionAndConformanceLevelIdentificationElement(XNamespace rdf, XAttribute emptyRdfAbout, PdfAStandard standard)
{
/*
* The only mandatory XMP entries are those which indicate that the file is a PDF/A-1 file and its conformance level.
* The PDF/A version and conformance level of a file shall be specified using the PDF/A Identification extension schema.
*/
XNamespace pdfaid = PdfAIdentificationExtensionNamespace;
var pdfAidContainer = new XElement(rdf + "Description", emptyRdfAbout, GetNamespaceAttribute(PdfAIdentificationExtensionPrefix, pdfaid));
int part;
string conformance;
switch (standard)
{
case PdfAStandard.A1B:
part = 1;
conformance = "B";
break;
case PdfAStandard.A1A:
part = 1;
conformance = "A";
break;
case PdfAStandard.A2B:
part = 2;
conformance = "B";
break;
default:
throw new ArgumentOutOfRangeException(nameof(standard), standard, null);
}
pdfAidContainer.Add(new XElement(pdfaid + "part", part));
pdfAidContainer.Add(new XElement(pdfaid + "conformance", conformance));
return(pdfAidContainer);
}
