private static XElement GetSpPr(PresentationPart part, double percentageOfCy)
{
XElement sldSz = part.GetXDocument()
.Elements(P.presentation)
.Elements(P.sldSz)
.Single();
var sldCx = (int)sldSz.Attribute(NoNamespace.cx) !;
var sldCy = (int)sldSz.Attribute(NoNamespace.cy) !;
var extentSize = (long)(sldCy * percentageOfCy);
long offsetX = (sldCx / 2) - (extentSize / 2);
long offsetY = (sldCy / 2) - (extentSize / 2);
return(new XElement(P.spPr,
new XElement(A.xfrm,
new XElement(A.off,
new XAttribute(NoNamespace.x, offsetX),
new XAttribute(NoNamespace.y, offsetY)),
new XElement(A.ext,
new XAttribute(NoNamespace.cx, extentSize),
new XAttribute(NoNamespace.cy, extentSize))),
new XElement(A.prstGeom,
new XAttribute(NoNamespace.prst, "rect"),
new XElement(A.avLst))));
}
public static void AddSvg(Stream stream, string svgPath, double percentageOfCy)
{
using PresentationDocument presentationDocument = PresentationDocument.Open(stream, true);
PresentationPart presentationPart = presentationDocument.PresentationPart ??
throw new InvalidOperationException(@"PresentationDocument is invalid.");
// Get relationship ID of first slide.
string sldRelId = presentationPart.GetXDocument()
.Elements(P.presentation)
.Elements(P.sldIdLst)
.Elements(P.sldId)
.Select(sldId => (string)sldId.Attribute(R.id) !)
.FirstOrDefault() ?? throw new InvalidOperationException(@"Presentation has no slides.");
// Get first slide's part.
var slidePart = (SlidePart)presentationPart.GetPartById(sldRelId);
// Determine unique relationship IDs for new image parts.
int partsCount = slidePart.Parts.Count();
string pngRelId = $"rId{++partsCount}";
string svgRelId = $"rId{++partsCount}";
// Add new image part with PNG image to slide part.
using Stream pngStream = GeneralTools.ReadSvgAsPng(svgPath);
GeneralTools.AddImagePart(slidePart, ImagePartType.Png, pngRelId, pngStream);
// Add new image part with SVG image to slide part.
using Stream svgStream = File.Open(svgPath, FileMode.Open, FileAccess.Read);
GeneralTools.AddImagePart(slidePart, ImagePartType.Svg, svgRelId, svgStream);
var picture =
new XElement(P.pic,
new XElement(P.nvPicPr,
new XElement(P.cNvPr,
new XAttribute(NoNamespace.id, ++partsCount),
new XAttribute(NoNamespace.name, "Picture 1"),
new XElement(A.extLst,
new XElement(A.ext,
new XAttribute(NoNamespace.uri, "{FF2B5EF4-FFF2-40B4-BE49-F238E27FC236}"),
new XElement(A16.creationId,
new XAttribute(XNamespace.Xmlns + "a16", A16.a16),
new XAttribute(NoNamespace.id, GeneralTools.GetNewGuidString()))))),
new XElement(P.cNvPicPr,
new XElement(A.picLocks,
new XAttribute(NoNamespace.noChangeAspect, "1"))),
new XElement(P.nvPr)),
new XElement(P.blipFill,
new XElement(A.blip,
new XAttribute(R.embed, pngRelId),
new XElement(A.extLst,
new XElement(A.ext,
new XAttribute(NoNamespace.uri, "{96DAC541-7B7A-43D3-8B79-37D633B846F1}"),
new XElement(ASVG.svgBlip,
new XAttribute(XNamespace.Xmlns + "asvg", ASVG.asvg),
new XAttribute(R.embed, svgRelId))))),
new XElement(A.stretch,
new XElement(A.fillRect))),
GetSpPr(presentationPart, percentageOfCy));
XElement spTree = slidePart.GetXDocument()
.Elements(P.sld)
.Elements(P.cSld)
.Elements(P.spTree)
.Single();
spTree.Add(picture);
slidePart.SaveXDocument();
}
