Каждый pptx, созданный с помощью OpenXml, требует восстановления с помощью PowerPoint. ⇐ C#

[Anonymous]

Я пытаюсь создать новую презентацию с одним слайдом, содержащим изображение. Каждый файл .pptx, созданный с помощью OpenXml, при открытии в PowerPoint показывает следующее сообщение:

PowerPoint обнаружил проблему с содержимым в файле file.pptx. PowerPoint может попытаться восстановить презентацию.

Если я нажму «Восстановить», она восстановится, и изображение будет отображаться нормально. Но я, конечно, не хочу, чтобы каждый раз это подсказывали. Я использовал все инструменты проверки, которые смог найти (код производительности OpenXml, проверка внутри кода, ooxml и т. д.), и ни один из них не выявил ошибки.
Часть кода показана здесь:
private const long EmusPerPoint = 12700L;
private const long EmusPerInch = 914400L;
private const int Left = 100;
private const int Top = 100;

private const uint SlideMasterId = 2147483648U;
private const uint SlideLayoutId = 2147483649U;
private const uint SlideId = 256U;

public static void SendToPowerPoint(string imagePath)
{
try
{
var outputPath = Path.Combine(
Path.GetTempPath(),
$"tempPresentation-{DateTime.Now:yyyy-MM-dd-HH-mm-ss}.pptx"
);

long cx;
long cy;

using (var bmp = System.Drawing.Image.FromFile(imagePath))
{
cx = (long)(bmp.Width / bmp.HorizontalResolution * EmusPerInch);
cy = (long)(bmp.Height / bmp.VerticalResolution * EmusPerInch);
}

long leftEmu = Left * EmusPerPoint;
long topEmu = Top * EmusPerPoint;

using (var pptx = PresentationDocument.Create(outputPath, PresentationDocumentType.Presentation))
{
var presentationPart = pptx.AddPresentationPart();
presentationPart.Presentation = new Presentation();

var slideMasterPart = presentationPart.AddNewPart("rIdMaster");
var slideLayoutPart = slideMasterPart.AddNewPart("rIdLayout");

slideLayoutPart.AddPart(slideMasterPart, "rIdMaster");

BuildSlideLayout(slideLayoutPart);
BuildSlideMaster(slideMasterPart, slideLayoutPart);

var slidePart = presentationPart.AddNewPart("rIdSlide");

// reference the layout using SAME relationship ID
slidePart.AddPart(slideLayoutPart, "rIdLayout");

// add image
var imagePart = slidePart.AddImagePart(GetImagePartType(imagePath), "rIdImage");
using (var stream = File.OpenRead(imagePath))
imagePart.FeedData(stream);

var picture = BuildPicture("rIdImage", leftEmu, topEmu, cx, cy);

BuildSlide(slidePart, picture);

var pres = presentationPart.Presentation;

pres.SlideMasterIdList =
new SlideMasterIdList(
new SlideMasterId
{
Id = SlideMasterId,
RelationshipId = "rIdMaster"
});

pres.SlideIdList =
new SlideIdList(
new SlideId
{
Id = SlideId,
RelationshipId = "rIdSlide"
});

pres.SlideSize = new SlideSize
{
Cx = 9144000,
Cy = 6858000
};

pres.NotesSize = new NotesSize
{
Cx = 6858000,
Cy = 9144000
};

pres.DefaultTextStyle = new DefaultTextStyle();
pres.Save();
}

System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
{
FileName = outputPath,
UseShellExecute = true
});
}
catch (Exception ex)
{
MessageBox.Show($"PowerPoint integration failed: {ex.Message}");
}
}

private static void BuildSlideLayout(SlideLayoutPart part)
{
part.SlideLayout =
new SlideLayout(
new CommonSlideData(
new ShapeTree(
new NonVisualGroupShapeProperties(
new NonVisualDrawingProperties { Id = 1, Name = "" },
new NonVisualGroupShapeDrawingProperties(),
new ApplicationNonVisualDrawingProperties()
),
new GroupShapeProperties(new OpenXmlDrawing.TransformGroup()),

new Shape(
new NonVisualShapeProperties(
new NonVisualDrawingProperties { Id = 2, Name = "Title Placeholder" },
new NonVisualShapeDrawingProperties(new OpenXmlDrawing.ShapeLocks { NoGrouping = true }),
new ApplicationNonVisualDrawingProperties(new PlaceholderShape())
),
new ShapeProperties()
)
)
),
new ColorMapOverride(new OpenXmlDrawing.MasterColorMapping())
)
{
Type = SlideLayoutValues.Blank
};

part.SlideLayout.Save();
}

private static void BuildSlideMaster(SlideMasterPart masterPart, SlideLayoutPart layoutPart)
{
masterPart.SlideMaster =
new SlideMaster(
new CommonSlideData(
new ShapeTree(
new NonVisualGroupShapeProperties(
new NonVisualDrawingProperties { Id = 1, Name = "" },
new NonVisualGroupShapeDrawingProperties(),
new ApplicationNonVisualDrawingProperties()
),
new GroupShapeProperties(new OpenXmlDrawing.TransformGroup())
)
),
new ColorMap
{
Background1 = OpenXmlDrawing.ColorSchemeIndexValues.Light1,
Text1 = OpenXmlDrawing.ColorSchemeIndexValues.Dark1,
Background2 = OpenXmlDrawing.ColorSchemeIndexValues.Light2,
Text2 = OpenXmlDrawing.ColorSchemeIndexValues.Dark2,
Accent1 = OpenXmlDrawing.ColorSchemeIndexValues.Accent1,
Accent2 = OpenXmlDrawing.ColorSchemeIndexValues.Accent2,
Accent3 = OpenXmlDrawing.ColorSchemeIndexValues.Accent3,
Accent4 = OpenXmlDrawing.ColorSchemeIndexValues.Accent4,
Accent5 = OpenXmlDrawing.ColorSchemeIndexValues.Accent5,
Accent6 = OpenXmlDrawing.ColorSchemeIndexValues.Accent6,
Hyperlink = OpenXmlDrawing.ColorSchemeIndexValues.Hyperlink,
FollowedHyperlink = OpenXmlDrawing.ColorSchemeIndexValues.FollowedHyperlink
},
new SlideLayoutIdList(
new SlideLayoutId
{
Id = SlideLayoutId,
RelationshipId = "rIdLayout"
}
)
);

masterPart.SlideMaster.Save();
}

private static void BuildSlide(SlidePart part, Picture picture)
{
part.Slide =
new Slide(
new CommonSlideData(
new ShapeTree(
new NonVisualGroupShapeProperties(
new NonVisualDrawingProperties { Id = 1, Name = "" },
new NonVisualGroupShapeDrawingProperties(),
new ApplicationNonVisualDrawingProperties()
),
new GroupShapeProperties(new OpenXmlDrawing.TransformGroup()),
picture
)
),
new ColorMapOverride(new OpenXmlDrawing.MasterColorMapping())
);

part.Slide.Save();
}

private static Picture BuildPicture(string relId, long left, long top, long cx, long cy)
{
return new Picture(
new NonVisualPictureProperties(
new NonVisualDrawingProperties { Id = 2, Name = "Picture 1" },
new NonVisualPictureDrawingProperties(new OpenXmlDrawing.PictureLocks { NoChangeAspect = true }),
new ApplicationNonVisualDrawingProperties()
),
new BlipFill(
new OpenXmlDrawing.Blip { Embed = relId },
new OpenXmlDrawing.Stretch(new OpenXmlDrawing.FillRectangle())
),
new ShapeProperties(
new OpenXmlDrawing.Transform2D(
new OpenXmlDrawing.Offset { X = left, Y = top },
new OpenXmlDrawing.Extents { Cx = cx, Cy = cy }
),
new OpenXmlDrawing.PresetGeometry(new OpenXmlDrawing.AdjustValueList())
{ Preset = OpenXmlDrawing.ShapeTypeValues.Rectangle }
)
);
}

private static ImagePartType GetImagePartType(string path)
{
switch (Path.GetExtension(path).ToLowerInvariant())
{
case ".jpg":
case ".jpeg": return ImagePartType.Jpeg;
case ".png": return ImagePartType.Png;
case ".gif": return ImagePartType.Gif;
case ".bmp": return ImagePartType.Bmp;
case ".tif":
case ".tiff": return ImagePartType.Tiff;
default: return ImagePartType.Png;
}
}