使用Open XML SDK将图从EA导出到文档文件
本文关键字：文档 文件 EA XML Open SDK 使用 | 更新日期: 2023-09-27 18:01:21
我正试图从EA导出一些图表到一个文档文件。虽然大多数图表都正确导出，但很少有图表被扭曲。它们的宽度或高度被放大，这种情况很少发生。我已经尝试了几种方法，但都无法纠正这个问题。
下面是我使用的代码:
EA。Project oProject = mainclass_srs . eareposs . getprojectinterface ();
oProject.PutDiagramImageToFile(diagram.DiagramGUID, SDSAddinForm.testsavediagramfilename, 1);
var img = BitmapFromUri(new Uri(SDSAddinForm.testsavediagramfilename, 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 = 7.00;
var widthEmus = (long)((widthPx / horzRezDpi) * emusPerInch);
var heightEmus = (long)((heightPx / vertRezDpi) * emusPerInch);
var maxWidthEmus = (long)(14 * emusPerCm);
var maxHeightEmus = (long)(18.5 * emusPerCm);
if (heightEmus > maxHeightEmus)
{
var ratio1 = (heightEmus * 1.0m) / widthEmus;
heightEmus = maxHeightEmus;
widthEmus = (long)(heightEmus / ratio1);
}
谁能建议应该做什么改变，以便正确的大小导出
从我的图表包装器中，我使用以下代码提取图表图像:
/// <summary>
/// returns diagram image
/// </summary>
public Image image
{
get
{
EA.Project projectInterface = this.model.getWrappedModel().GetProjectInterface();
string diagramGUID = projectInterface.GUIDtoXML(this.wrappedDiagram.DiagramGUID);
string filename = System.IO.Path.GetTempPath() + Guid.NewGuid().ToString() + ".png";
//save diagram image to file (format ".png")
projectInterface.PutDiagramImageToFile(diagramGUID, filename, 1);
//load the contents of the file into a memorystream
MemoryStream imageStream = new MemoryStream(File.ReadAllBytes(filename));
//then create the image from the memorystream.
//this allows us to delete the temporary file right after loading it.
//When using Image.FromFile the file would have been locked for the lifetime of the Image
Image diagramImage = Image.FromStream(imageStream);
//delete the temorary file
System.IO.File.Delete(filename);
return diagramImage;
}
}
然后我用这段代码让包含图像的模板对象通过序列化器
[XmlIgnoreAttribute()]
public System.Drawing.Image diagramImage { get; set; }
// Serializes the 'Picture' Bitmap to XML.
[XmlElementAttribute("diagramImage")]
public string imageBase64String
{
get
{
if (this.diagramImage != null)
{
System.ComponentModel.TypeConverter BitmapConverter = System.ComponentModel.TypeDescriptor.GetConverter(this.diagramImage.GetType());
byte[] byteArray = (byte[])BitmapConverter.ConvertTo(this.diagramImage, typeof(byte[]));
string imageString = Convert.ToBase64String(byteArray);
return imageString;
}
else
return null;
}
set
{
if (value != null)
{
byte[] imageFileBytes = Convert.FromBase64String(value);
this.diagramImage = new System.Drawing.Bitmap(new System.IO.MemoryStream(imageFileBytes));
}
else
{
this.diagramImage = null;
}
}
}
然后在文档中这是将图像插入文档
的代码/// <summary>
/// Adds image
/// </summary>
/// <param name="filename">image</param>
/// <param name="mainpart">main document part</param>
/// <param name="contentOpenXmlElement">element where picture will be added</param>
private static void AddImage(string filename, MainDocumentPart mainpart, OpenXmlElement contentOpenXmlElement)
{
Picture pic = contentOpenXmlElement.Descendants().Where(x => x is Picture).FirstOrDefault() as Picture;
if (null != pic)
{
byte[] imageFileBytes = Convert.FromBase64String(filename);
Bitmap image = new Bitmap(new MemoryStream(imageFileBytes));
// write the image to the document
string SigId = "b" + Guid.NewGuid();
//var imagePart = mainpart.AddNewPart<ImagePart>("image/png", SigId);
//using (BinaryWriter writer = new BinaryWriter(imagePart.GetStream()))
//{
// writer.Write(imageFileBytes);
// writer.Flush();
//}
ImagePart imagePart = mainpart.AddNewPart<ImagePart>("image/png", SigId);
using (MemoryStream ms = new MemoryStream())
{
image.Save(ms, ImageFormat.Png);
ms.Position = 0;
imagePart.FeedData(ms);
}
//make sure image dimensions are respected and our image is centered in the container
if (image.Width / (double)image.Height > pic.ShapeProperties.Transform2D.Extents.Cx / (double)pic.ShapeProperties.Transform2D.Extents.Cy)
{
long oldcy = pic.ShapeProperties.Transform2D.Extents.Cy;
pic.ShapeProperties.Transform2D.Extents.Cy = (long)(pic.ShapeProperties.Transform2D.Extents.Cx * image.Height / (double)image.Width);
pic.ShapeProperties.Transform2D.Offset.Y = (oldcy - pic.ShapeProperties.Transform2D.Extents.Cy) >> 1;
}
else
{
long oldcx = pic.ShapeProperties.Transform2D.Extents.Cx;
pic.ShapeProperties.Transform2D.Extents.Cx = (long)(pic.ShapeProperties.Transform2D.Extents.Cy * image.Width / (double)image.Height);
pic.ShapeProperties.Transform2D.Offset.X = (oldcx - pic.ShapeProperties.Transform2D.Extents.Cx) >> 1;
}
pic.BlipFill = new BlipFill(new Blip { Embed = SigId }, new Stretch(new FillRectangle()));
var element = new Drawing(new Inline(
new Extent { Cx = pic.ShapeProperties.Transform2D.Extents.Cx, Cy = pic.ShapeProperties.Transform2D.Extents.Cy },
new EffectExtent { LeftEdge = 0L, TopEdge = 0L, RightEdge = 0L, BottomEdge = 0L },
new DocProperties { Id = (UInt32Value)1U, Name = "Picture 1" },
new NonVisualGraphicFrameDrawingProperties(
new A.GraphicFrameLocks { NoChangeAspect = true }),
new A.Graphic(new A.GraphicData(new Picture(
new PIC.NonVisualPictureProperties(
new PIC.NonVisualDrawingProperties { Id = (UInt32Value)0U, Name = "New Bitmap Image.jpg" },
new PIC.NonVisualPictureDrawingProperties()),
new BlipFill(new Blip(new A.BlipExtensionList(
new A.BlipExtension { Uri = "{28A0092B-C50C-407E-A947-70E740481C1C}" }))
{ Embed = SigId, CompressionState = A.BlipCompressionValues.Print },
new Stretch(new FillRectangle())),
new PIC.ShapeProperties(new A.Transform2D(
new A.Offset { X = pic.ShapeProperties.Transform2D.Offset.X, Y = pic.ShapeProperties.Transform2D.Offset.Y },
new A.Extents { Cx = pic.ShapeProperties.Transform2D.Extents.Cx, Cy = pic.ShapeProperties.Transform2D.Extents.Cy }),
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"
});
contentOpenXmlElement.RemoveAllChildren();
contentOpenXmlElement.AppendChild(new Paragraph(new Run(element)));
}
}
我建议直接使用
Repository.GetProjectInterface.PutDiagramImageToFile (string Diagram GUID, string FileName, long Type)
这将以您指定的格式保存正确呈现的文件。
存在图表大小不正确的问题(论坛讨论;记不住细节)。如果是，请尝试升级或报告错误。