/// <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); } }