/// <summary>
/// Gets the document theme
/// </summary>
public static OpenXmlPowerToolsDocument GetTheme(WmlDocument doc)
{
using (OpenXmlMemoryStreamDocument sourceStreamDoc = new OpenXmlMemoryStreamDocument(doc))
using (WordprocessingDocument document = sourceStreamDoc.GetWordprocessingDocument())
{
// Loads the theme part main file
ThemePart theme = document.MainDocumentPart.ThemePart;
if (theme != null)
{
XDocument themeDocument = theme.GetXDocument();
// Creates the theme package (thmx file)
using (OpenXmlMemoryStreamDocument streamDoc = OpenXmlMemoryStreamDocument.CreatePackage())
{
using (Package themePackage = streamDoc.GetPackage())
{
// Creates the theme manager part on the new package and loads default content
PackagePart newThemeManagerPart = themePackage.CreatePart(new Uri("/theme/theme/themeManager.xml", UriKind.RelativeOrAbsolute), "application/vnd.openxmlformats-officedocument.themeManager+xml");
themePackage.CreateRelationship(newThemeManagerPart.Uri, TargetMode.Internal, "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument");
using (XmlWriter xWriter = XmlWriter.Create(newThemeManagerPart.GetStream(FileMode.Create, FileAccess.Write)))
{
CreateEmptyThemeManager().WriteTo(xWriter);
xWriter.Flush();
}
// Creates the main theme part
PackagePart newThemePart = themePackage.CreatePart(new Uri("/theme/theme/" + theme.Uri.OriginalString.Substring(theme.Uri.OriginalString.LastIndexOf('/') + 1), UriKind.RelativeOrAbsolute), theme.ContentType);
newThemeManagerPart.CreateRelationship(newThemePart.Uri, TargetMode.Internal, theme.RelationshipType);
// Gets embeded part references
var embeddedItems =
themeDocument
.Descendants()
.Attributes(relationshipns + "embed");
foreach (IdPartPair partId in theme.Parts)
{
OpenXmlPart part = partId.OpenXmlPart;
// Creates the new media part inside the destination package
PackagePart newPart = themePackage.CreatePart(new Uri("/theme/media/" + part.Uri.OriginalString.Substring(part.Uri.OriginalString.LastIndexOf('/') + 1), UriKind.RelativeOrAbsolute), part.ContentType);
PackageRelationship relationship =
newThemePart.CreateRelationship(newPart.Uri, TargetMode.Internal, part.RelationshipType);
// Copies binary content from original part to destination part
Stream partStream = part.GetStream(FileMode.Open, FileAccess.Read);
Stream newPartStream = newPart.GetStream(FileMode.Create, FileAccess.Write);
byte[] fileContent = new byte[partStream.Length];
partStream.Read(fileContent, 0, (int)partStream.Length);
newPartStream.Write(fileContent, 0, (int)partStream.Length);
newPartStream.Flush();
// Replaces old embed part reference with the freshly created one
XAttribute relationshipAttribute = embeddedItems.FirstOrDefault(e => e.Value == theme.GetIdOfPart(part));
if (relationshipAttribute != null)
{
relationshipAttribute.Value = relationship.Id;
}
}
// Writes the updated theme XDocument into the destination package
using (XmlWriter newThemeWriter = XmlWriter.Create(newThemePart.GetStream(FileMode.Create, FileAccess.Write)))
themeDocument.WriteTo(newThemeWriter);
}
return(streamDoc.GetModifiedDocument());
}
}
return(null);
}
}
