scale - PDFsharp - 更改页面大小和缩放内容

Question

是否可以从例如缩放页面？ A2 到 A1 与 PDFsharp？我可以通过大小、宽度和高度来设置页面的大小。但是如何缩放页面的内容呢？

Answer 1

根据 Vive 的评论和那里提供的链接，这里有一个使用 C# 将大小调整为 A4 的示例:

您必须包括:

    using PdfSharp.Pdf;
    using PdfSharp.Drawing;
    using PdfSharp;

然后:

    // resize this  file from A3 to A4
    string filename = @"C:\temp\A3.pdf";

    // Create the new output document (A4)
    PdfDocument outputDocument = new PdfDocument();
    outputDocument.PageLayout = PdfPageLayout.SinglePage;

    XGraphics gfx;
    XRect box;
    // Open the file to resize
    XPdfForm form = XPdfForm.FromFile(filename);

    // Add a new page to the output document
    PdfPage page = outputDocument.AddPage();

    if (form.PixelWidth > form.PixelHeight)
         page.Orientation = PageOrientation.Landscape;
    else
         page.Orientation = PageOrientation.Portrait;

     double width = page.Width;
     double height = page.Height;

     gfx = XGraphics.FromPdfPage(page);
     box = new XRect(0, 0, width, height);
     gfx.DrawImage(form, box);

     // Save the document...
     string newfilename = @"c:\temp\resized.pdf";
     outputDocument.Save(newfilename);