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新书通报 docx 格式增加封面图像
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@DigitalPlatform
DigitalPlatform committed Aug 2, 2023
1 parent 3f6c121 commit f363202
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Showing 14 changed files with 480 additions and 53 deletions.
1 change: 1 addition & 0 deletions DigitalPlatform.Typography/DigitalPlatform.Typography.csproj
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Expand Up @@ -6,6 +6,7 @@

<ItemGroup>
<PackageReference Include="DocumentFormat.OpenXml" Version="2.17.1" />
<PackageReference Include="SixLabors.ImageSharp" Version="1.0.0" />
</ItemGroup>

<ItemGroup>
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189 changes: 187 additions & 2 deletions DigitalPlatform.Typography/TypoUtility.cs
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Expand Up @@ -8,6 +8,9 @@
using System.Text;
using System.IO;

using A = DocumentFormat.OpenXml.Drawing;
using DW = DocumentFormat.OpenXml.Drawing.Wordprocessing;
using PIC = DocumentFormat.OpenXml.Drawing.Pictures;

using DocumentFormat.OpenXml.VariantTypes;
using DocumentFormat.OpenXml;
Expand All @@ -17,6 +20,8 @@

using DigitalPlatform.Text;
using DigitalPlatform.Xml;
using System.Net.Http;
// using SixLabors.ImageSharp;

namespace DigitalPlatform.Typography
{
Expand Down Expand Up @@ -112,7 +117,7 @@ public static void XmlToWord(string xmlFileName,
static void AdjustTable(XmlDocument dom)
{
var nodes = dom.DocumentElement.SelectNodes("//table");
foreach(XmlElement table in nodes)
foreach (XmlElement table in nodes)
{
if (IsParentTd(table) == false)
continue;
Expand Down Expand Up @@ -141,7 +146,7 @@ bool IsParentTd(XmlElement current)

bool HasSiblingP(XmlElement current)
{
foreach(XmlElement sibling in current.ParentNode.ChildNodes)
foreach (XmlElement sibling in current.ParentNode.ChildNodes)
{
if (sibling == null)
continue;
Expand Down Expand Up @@ -1205,6 +1210,49 @@ static void CreateTextStream(
continue;
}

if (child_node.Name == "img")
{
XmlElement e = child_node as XmlElement;
string src = e.GetAttribute("src");

HttpClient client = new HttpClient();
var response = client.GetAsync(src).Result;

var contentType = response.Content.Headers.ContentType?.MediaType;

int width = 0;
int height = 0;
ImagePart imagePart = null;
using (var stream = response.Content.ReadAsStreamAsync().Result)
{
// Stream theStream = client.GetStreamAsync(src).Result;

/*
var ext = Path.GetExtension(imageFileName);
ImagePartType type = ImagePartType.Jpeg;
Enum.TryParse<ImagePartType>(ext, true, out type);
*/
var type = GetImageType(contentType);
imagePart = doc.MainDocumentPart.AddImagePart(type);

using (var image = SixLabors.ImageSharp.Image.Load(stream))
{
width = image.Width;
height = image.Height;
}
}

response = client.GetAsync(src).Result;
using (var stream = response.Content.ReadAsStreamAsync().Result)
{
imagePart.FeedData(stream);
}
var relationshipId = doc.MainDocumentPart.GetIdOfPart(imagePart);
var d = NewDrawing(relationshipId, width, height);
Run run = CreateParagraphIfNeed().AppendChild(new Run(d));
continue;
}

if (child_node.Name == "br")
{
Run run = CreateParagraphIfNeed().AppendChild(new Run());
Expand Down Expand Up @@ -1995,5 +2043,142 @@ public static StyleDefinitionsPart AddStylesPartToPackage(WordprocessingDocument
}

#endregion


#region Image

/*
public static void InsertAPicture(
MainDocumentPart mainPart,
string imageFileName)
{
ImagePart imagePart = mainPart.AddImagePart(ImagePartType.Jpeg);
using (FileStream stream = new FileStream(imageFileName, FileMode.Open))
{
imagePart.FeedData(stream);
}
AddImageToBody(mainPart, mainPart.GetIdOfPart(imagePart));
}
*/
static ImagePartType GetImageType(string content_type)
{
var parts = StringUtil.ParseTwoPart(content_type, "/");
string ext = parts[1];
if (Enum.TryParse<ImagePartType>(ext, true, out ImagePartType type) == true)
return type;
if (ext.ToLower() == "jpeg" || ext.ToLower() == "jpg")
return ImagePartType.Jpeg;
if (ext.ToLower() == "x-png" || ext.ToLower() == "png")
return ImagePartType.Png;
throw new Exception($"无法识别 Content-Type '{content_type}' 的图像文件类型");
}


#if REMOVED
static ImagePartType GetImageType(string imageFileName)
{
var ext = Path.GetExtension(imageFileName).Substring(1);
ImagePartType type = ImagePartType.Jpeg;
if (Enum.TryParse<ImagePartType>(ext, true, out type) == true)
return type;
if (ext.ToLower() == "jpeg" || ext.ToLower() == "jpg")
return ImagePartType.Jpeg;
throw new Exception($"无法识别文件 '{imageFileName}' 的图像文件类型");
}
#endif

// https://learn.microsoft.com/en-us/office/open-xml/how-to-insert-a-picture-into-a-word-processing-document
private static Drawing NewDrawing(// MainDocumentPart mainPart,
string relationshipId,
int w,
int h)
{
// https://riptutorial.com/openxml/example/29113/refer-to-the-image-in-the-word-document
Int64Value width = w * 9525;
Int64Value height = h * 9525;

// Define the reference of the image.
var element =
new Drawing(
new DW.Inline(
new DW.Extent() { Cx = width/*990000L*/, Cy = height/*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 = width/*990000L*/, Cy = height/*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"
});

return element;
// Append the reference to body, the element should be in a Run.
// mainPart.Document.Body.AppendChild(new Paragraph(new Run(element)));
}

#endregion
}

/*
DigitalPlatform.Typography
因安装 SixLabors.ImageSharp 连带更新:
System.Buffers.4.4.0 -> System.Buffers.4.5.1
System.Memory.4.5.0 -> System.Memory.4.5.4
System.Numerics.Vectors.4.4.0 -> System.Numerics.Vectors.4.5.0
System.Runtime.CompilerServices.Unsafe.4.5.0 -> System.Runtime.CompilerServices.Unsafe.5.0.0
* */
}
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