PrintToPdf - PdfPrintSettings - Custom Margins do not work

[TomasPojezny-IdeaStatiCa]

• What version of the product are you using? Nuget 110.0.300

• What architecture x86 or x64? x64

• What version of .Net? Net 4.8

• On what operating system? Win11

• Are you using WinForms, WPF or OffScreen? WPF

• What steps will reproduce the problem?

  private static PdfPrintSettings GetPdfPrintSettings()
  {
      double MillimetersToInches (double millimeter) => millimeter / 25.4;

      return new PdfPrintSettings
      {
          PaperWidth = MillimetersToInches(210.0),
          PaperHeight = MillimetersToInches(297.0),

          // NOTE: Margins input does not seem to work in CefSharp version 110.0.300
          MarginType = CefPdfPrintMarginType.Custom,
          MarginLeft = MillimetersToInches(20.0),
          MarginTop = MillimetersToInches(30.0),
          MarginRight = MillimetersToInches(10.0),
          MarginBottom = MillimetersToInches(25.0),

          PrintBackground = true
      };
  }

  // ...

  webBrowserHost.GetBrowser().GetHost().PrintToPdf(dialog.FileName, GetPdfPrintSettings(), callback);

• What is the expected output? What do you see instead? Expected specified margins, instead default margins

[amaitland]

• What version of the product are you using? Nuget 110.0.300

Please test with the current release.

Custom Margins do not work

CefSharp does little more than populate the structure and call the underlying CEF method. So I suspect this is a problem in CEF

https://github.com/cefsharp/CefSharp/blob/v112.2.70/CefSharp.Core.Runtime/Internals/CefBrowserHostWrapper.cpp#L96

https://github.com/chromiumembedded/cef/blob/5615/include/internal/cef_types.h#L2536

If the problem reproduces in the current supported version then it's probably worth stepping through with the debugger to confirm the correct values is being passed through. On the surface it looks like an upstream issue in CEF.

[aimcosoftware]

I've implemented PDF.js, which gives you complete control https://mozilla.github.io/pdf.js/

[hronlukas]

Hi, I've tested it with 115.3.130 and still it doesn't work.

[amaitland]

stepping through with the debugger to confirm the correct values is being passed through. On the surface it looks like an upstream issue in CEF.

Build the project from source, confirm the values are being passed through correctly. The actual implementation is at the CEF/Chromium level.

[amaitland]

Closing as upstream. If this still reproduces with the current supported version of CEF (M121 at time of writing) then you'll need to raise an issue at https://github.com/chromiumembedded/cef/issues (Post a link back here for reference)

[hopfen-heiner]

Still happens in 121, I've created an issue here.