我正在使用OpenXML將圖像插入到我的文檔中。由微軟提供的代碼工作,但使圖像更小:使用OpenXML將圖像插入DocX並設置大小
public static void InsertAPicture(string document, string fileName)
{
using (WordprocessingDocument wordprocessingDocument = WordprocessingDocument.Open(document, true))
{
MainDocumentPart mainPart = wordprocessingDocument.MainDocumentPart;
ImagePart imagePart = mainPart.AddImagePart(ImagePartType.Jpeg);
using (FileStream stream = new FileStream(fileName, FileMode.Open))
{
imagePart.FeedData(stream);
}
AddImageToBody(wordprocessingDocument, mainPart.GetIdOfPart(imagePart));
}
}
private static void AddImageToBody(WordprocessingDocument wordDoc, string relationshipId)
{
// Define the reference of the image.
var element =
new Drawing(
new DW.Inline(
new DW.Extent() { Cx = 990000L, Cy = 792000L },
new DW.EffectExtent()
{
LeftEdge = 0L,
TopEdge = 0L,
RightEdge = 0L,
BottomEdge = 0L
},
new DW.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Picture 1"
},
new DW.NonVisualGraphicFrameDrawingProperties(
new A.GraphicFrameLocks() { NoChangeAspect = true }),
new A.Graphic(
new A.GraphicData(
new PIC.Picture(
new PIC.NonVisualPictureProperties(
new PIC.NonVisualDrawingProperties()
{
Id = (UInt32Value)0U,
Name = "New Bitmap Image.jpg"
},
new PIC.NonVisualPictureDrawingProperties()),
new PIC.BlipFill(
new A.Blip(
new A.BlipExtensionList(
new A.BlipExtension()
{
Uri =
"{28A0092B-C50C-407E-A947-70E740481C1C}"
})
)
{
Embed = relationshipId,
CompressionState = A.BlipCompressionValues.Print
},
new A.Stretch(
new A.FillRectangle())),
new PIC.ShapeProperties(
new A.Transform2D(
new A.Offset() { X = 0L, Y = 0L },
new A.Extents() { Cx = 990000L, Cy = 792000L }),
new A.PresetGeometry(
new A.AdjustValueList()
) { Preset = A.ShapeTypeValues.Rectangle }))
) { Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture" })
)
{
DistanceFromTop = (UInt32Value)0U,
DistanceFromBottom = (UInt32Value)0U,
DistanceFromLeft = (UInt32Value)0U,
DistanceFromRight = (UInt32Value)0U,
EditId = "50D07946"
});
// Append the reference to body, the element should be in a Run.
wordDoc.MainDocumentPart.Document.Body.AppendChild(new Paragraph(new Run(element)));
}
我需要使圖像的原始大小。我怎樣才能做到這一點? (我已經搜索瞭如何在這個過程之外做到這一點,但這不是我所期待的,我必須假設在給定的代碼中有某種尺寸屬性)。
編輯:更新的代碼(仍然沒有工作)
public static void InsertAPicture(string document, string fileName)
{
using (WordprocessingDocument wordprocessingDocument = WordprocessingDocument.Open(document, true))
{
MainDocumentPart mainPart = wordprocessingDocument.MainDocumentPart;
ImagePart imagePart = mainPart.AddImagePart(ImagePartType.Jpeg);
using (FileStream stream = new FileStream(fileName, FileMode.Open))
{
imagePart.FeedData(stream);
}
AddImageToBody(wordprocessingDocument, mainPart.GetIdOfPart(imagePart), fileName);
}
}
private static void AddImageToBody(WordprocessingDocument wordDoc, string relationshipId, string fileName)
{
var img = new BitmapImage(new Uri(fileName, UriKind.RelativeOrAbsolute));
var widthPx = img.PixelWidth;
var heightPx = img.PixelHeight;
var horzRezDpi = img.DpiX;
var vertRezDpi = img.DpiY;
const int emusPerInch = 914400;
const int emusPerCm = 360000;
var maxWidthCm = 16.51;
var widthEmus = (long)(widthPx/horzRezDpi * emusPerInch);
var heightEmus = (long)(heightPx/vertRezDpi * emusPerInch);
var maxWidthEmus = (long)(maxWidthCm * emusPerCm);
if (widthEmus > maxWidthEmus)
{
var ratio = (heightEmus * 1.0m)/widthEmus;
widthEmus = maxWidthEmus;
heightEmus = (long)(widthEmus * ratio);
}
// Define the reference of the image.
var element =
new Drawing(
new DW.Inline(
new DW.Extent() { Cx = 990000L, Cy = 792000L },
new DW.EffectExtent()
{
LeftEdge = 0L,
TopEdge = 0L,
RightEdge = 0L,
BottomEdge = 0L
},
new DW.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Picture 1"
},
new DW.NonVisualGraphicFrameDrawingProperties(
new A.GraphicFrameLocks() { NoChangeAspect = true }),
new A.Graphic(
new A.GraphicData(
new PIC.Picture(
new PIC.NonVisualPictureProperties(
new PIC.NonVisualDrawingProperties()
{
Id = (UInt32Value)0U,
Name = "New Bitmap Image.jpg"
},
new PIC.NonVisualPictureDrawingProperties()),
new PIC.BlipFill(
new A.Blip(
new A.BlipExtensionList(
new A.BlipExtension()
{
Uri =
"{28A0092B-C50C-407E-A947-70E740481C1C}"
})
)
{
Embed = relationshipId,
CompressionState = A.BlipCompressionValues.Print
},
new A.Stretch(
new A.FillRectangle())),
new PIC.ShapeProperties(
new A.Transform2D(
new A.Offset() { X = 0L, Y = 0L },
new A.Extents() { Cx = widthEmus, Cy = heightEmus }),
new A.PresetGeometry(
new A.AdjustValueList()
) { Preset = A.ShapeTypeValues.Rectangle }))
) { Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture" })
)
{
DistanceFromTop = (UInt32Value)0U,
DistanceFromBottom = (UInt32Value)0U,
DistanceFromLeft = (UInt32Value)0U,
DistanceFromRight = (UInt32Value)0U,
EditId = "50D07946"
});
// Append the reference to body, the element should be in a Run.
wordDoc.MainDocumentPart.Document.Body.AppendChild(new Paragraph(new Run(element)));
}
對於寬度和高度圖像dpi是不變的?我如何計算這個? –
我把它們視爲不恆定,但我還沒有找到一個他們不是。如果您使用[BitmapImage](http://msdn.microsoft.com/zh-cn/library/ms619218.aspx)類(System.Windows.Media.Imaging命名空間)打開圖像,它具有以下屬性,您可以使用:'PixelWidth','PixelHeight','DpiX','DpiY'。 – ssarabando
我已將代碼示例添加到我的答案中。 – ssarabando