如何在 PdfSharp 中添加文件链接？

发布于 2024-07-14 13:56:57 字数 662 浏览 14 评论 0原文

我似乎无法让 PdfSharp 显示此注释的图片。它没有 PdfAnnotation.Icon 属性，所以我无法设置它。

XFont font = new XFont("Verdana", 10);
PdfPage page = wDoc.Parent.Page;
XGraphics gfx = wDoc.Parent.gfx;
XRect rec = gfx.Transformer.WorldToDefaultPage(new XRect(new XPoint(30, 60), new XSize(30, 30)));
PdfRectangle rect = new PdfRectangle(rec);
PdfLinkAnnotation link = PdfLinkAnnotation.CreateFileLink(rect, wDoc.FileLocation);
gfx.DrawString("These files were attached:", font, XBrushes.Black, 30, 50, XStringFormat.Default);

link.Rectangle = new PdfRectangle(rec);
page.Annotations.Add(link);

到目前为止，我已经了解了，并且注释确实存在，只是它是一个空白框！我该如何让它说些什么，甚至只是显示一张图片？

原文

I can't seem to get PdfSharp to show a picture for this annotation. It doesn't have the PdfAnnotation.Icon property, so I can't set that.

XFont font = new XFont("Verdana", 10);
PdfPage page = wDoc.Parent.Page;
XGraphics gfx = wDoc.Parent.gfx;
XRect rec = gfx.Transformer.WorldToDefaultPage(new XRect(new XPoint(30, 60), new XSize(30, 30)));
PdfRectangle rect = new PdfRectangle(rec);
PdfLinkAnnotation link = PdfLinkAnnotation.CreateFileLink(rect, wDoc.FileLocation);
gfx.DrawString("These files were attached:", font, XBrushes.Black, 30, 50, XStringFormat.Default);

link.Rectangle = new PdfRectangle(rec);
page.Annotations.Add(link);

I've gotten it that far, and the annotation DOES exist, except it's a blank box! How do I go about making it say something, or even just show a picture?

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巷雨优美回忆 2024-07-21 13:56:57

您需要使用 page.AddWebLink(AREArect) 然后使用 gfx.drawstring(AREArect) 添加文本区域

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失眠症患者 2024-07-21 13:56:57

Uri 用法的示例代码：

...
PdfDocument pdfDoc = PdfReader.Open(myUri.LocalPath, PdfDocumentOpenMode.Import);
PdfDocument pdfNewDoc = new PdfDocument();
for (int i = 0; i < pdfDoc.Pages.Count; i++)
{
   PdfPage page = pdfNewDoc.AddPage(pdfDoc.Pages[i]);
   XFont fontNormal = new XFont("Calibri", 10, XFontStyle.Regular);    
   XGraphics gfx = XGraphics.FromPdfPage(page);
   var xrect = new XRect(240, 395, 300, 20);
   var rect = gfx.Transformer.WorldToDefaultPage(xrect);
   var pdfrect = new PdfRectangle(rect);

   //file link
   page.AddFileLink(pdfrect, myUri.LocalPath);
   //web link
   //page.AddWebLink(pdfrect, myUri.AbsoluteUri);


   gfx.DrawString("MyFileName", fontNormal, XBrushes.Black, xrect, XStringFormats.TopLeft);
}
pdfNewDoc.Save(myDestinationUri.LocalPath + "MyNewPdfFile.pdf");
...

sample code for Uri usage:

...
PdfDocument pdfDoc = PdfReader.Open(myUri.LocalPath, PdfDocumentOpenMode.Import);
PdfDocument pdfNewDoc = new PdfDocument();
for (int i = 0; i < pdfDoc.Pages.Count; i++)
{
   PdfPage page = pdfNewDoc.AddPage(pdfDoc.Pages[i]);
   XFont fontNormal = new XFont("Calibri", 10, XFontStyle.Regular);    
   XGraphics gfx = XGraphics.FromPdfPage(page);
   var xrect = new XRect(240, 395, 300, 20);
   var rect = gfx.Transformer.WorldToDefaultPage(xrect);
   var pdfrect = new PdfRectangle(rect);

   //file link
   page.AddFileLink(pdfrect, myUri.LocalPath);
   //web link
   //page.AddWebLink(pdfrect, myUri.AbsoluteUri);


   gfx.DrawString("MyFileName", fontNormal, XBrushes.Black, xrect, XStringFormats.TopLeft);
}
pdfNewDoc.Save(myDestinationUri.LocalPath + "MyNewPdfFile.pdf");
...

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