/// <summary>
/// Sets the document theme
/// </summary>
/// <param name="theme">Theme package</param>
public static OpenXmlPowerToolsDocument SetTheme(WmlDocument doc, OpenXmlPowerToolsDocument themeDoc)
{
using (OpenXmlMemoryStreamDocument streamDoc = new OpenXmlMemoryStreamDocument(doc))
{
using (WordprocessingDocument document = streamDoc.GetWordprocessingDocument())
{
using (OpenXmlMemoryStreamDocument themeStream = new OpenXmlMemoryStreamDocument(themeDoc))
using (Package theme = themeStream.GetPackage())
{
// Gets the theme manager part
PackageRelationship themeManagerRelationship =
theme.GetRelationshipsByType(mainDocumentRelationshipType).FirstOrDefault();
if (themeManagerRelationship != null)
{
PackagePart themeManagerPart = theme.GetPart(themeManagerRelationship.TargetUri);
// Gets the theme main part
PackageRelationship themeRelationship =
themeManagerPart.GetRelationshipsByType(themeRelationshipType).FirstOrDefault();
if (themeRelationship != null)
{
PackagePart themePart = theme.GetPart(themeRelationship.TargetUri);
XDocument newThemeDocument = XDocument.Load(XmlReader.Create(themePart.GetStream(FileMode.Open, FileAccess.Read)));
// Removes existing theme part from document
if (document.MainDocumentPart.ThemePart != null)
{
document.MainDocumentPart.DeletePart(document.MainDocumentPart.ThemePart);
}
// Creates a new theme part
ThemePart documentThemePart = document.MainDocumentPart.AddNewPart <ThemePart>();
var embeddedItems =
newThemeDocument
.Descendants()
.Attributes(relationshipns + "embed");
foreach (PackageRelationship imageRelationship in themePart.GetRelationships())
{
// Adds an image part to the theme part and stores contents inside
PackagePart imagePart = theme.GetPart(imageRelationship.TargetUri);
ImagePart newImagePart =
documentThemePart.AddImagePart(GetImagePartType(imagePart.ContentType));
newImagePart.FeedData(imagePart.GetStream(FileMode.Open, FileAccess.Read));
// Updates relationship references into the theme XDocument
XAttribute relationshipAttribute = embeddedItems.FirstOrDefault(e => e.Value == imageRelationship.Id);
if (relationshipAttribute != null)
{
relationshipAttribute.Value = documentThemePart.GetIdOfPart(newImagePart);
}
}
documentThemePart.PutXDocument(newThemeDocument);
}
}
}
}
return(streamDoc.GetModifiedDocument());
}
}
/// <summary>
/// Sets the document theme
/// </summary>
/// <param name="theme">Theme package</param>
public void SetTheme(Package theme)
{
// Gets the theme manager part
PackageRelationship themeManagerRelationship =
theme.GetRelationshipsByType(mainDocumentRelationshipType).FirstOrDefault();
if (themeManagerRelationship != null)
{
PackagePart themeManagerPart = theme.GetPart(themeManagerRelationship.TargetUri);
// Gets the theme main part
PackageRelationship themeRelationship =
themeManagerPart.GetRelationshipsByType(themeRelationshipType).FirstOrDefault();
if (themeRelationship != null)
{
PackagePart themePart = theme.GetPart(themeRelationship.TargetUri);
XDocument newThemeDocument = XDocument.Load(XmlReader.Create(themePart.GetStream(FileMode.Open, FileAccess.Read)));
// Removes existing theme part from document
if (parentDocument.Document.MainDocumentPart.ThemePart != null)
{
parentDocument.Document.MainDocumentPart.DeletePart(parentDocument.Document.MainDocumentPart.ThemePart);
}
// Creates a new theme part
ThemePart documentThemePart = parentDocument.Document.MainDocumentPart.AddNewPart <ThemePart>();
XDocument themeDocument = parentDocument.GetXDocument(documentThemePart);
themeDocument.Add(newThemeDocument.Root);
var embeddedItems =
themeDocument
.Descendants()
.Attributes(relationshipns + "embed");
foreach (PackageRelationship imageRelationship in themePart.GetRelationships())
{
// Adds an image part to the theme part and stores contents inside
PackagePart imagePart = theme.GetPart(imageRelationship.TargetUri);
ImagePart newImagePart =
documentThemePart.AddImagePart(GetImagePartType(imagePart.ContentType));
newImagePart.FeedData(imagePart.GetStream(FileMode.Open, FileAccess.Read));
// Updates relationship references into the theme XDocument
XAttribute relationshipAttribute = embeddedItems.FirstOrDefault(e => e.Value == imageRelationship.Id);
if (relationshipAttribute != null)
{
relationshipAttribute.Value = documentThemePart.GetIdOfPart(newImagePart);
}
}
// Updates the theme part with actual contents of the theme XDocument
using (XmlWriter newThemeWriter = XmlWriter.Create(documentThemePart.GetStream(FileMode.Create, FileAccess.Write)))
themeDocument.WriteTo(newThemeWriter);
}
}
}
