Issues with Crop Boxes, XPdfForm, and XGraphics.DrawImage

[peter0302]

Resources

Issue Submission Code
PNM PDFSharp Issue Submission 2018-04-18.zip

Reporting an Issue Here

We have a PDF with a crop box that doesn't match the media box and we want to create a new PDF without any cropping but whose appearance matches the original when opened in Acrobat or any other reader.

Expected Behavior

Expected behavior is that

• XPdfForm.PointWidth and XPdfForm.PointHeight should take the crop box into account
• Calling XGraphics.DrawImage when the source image is an XPdfForm should take the crop box into account
• Even if those functions don't take the crop box into account, I ought to be able to use the crop box as the srcRect for XGraphics.DrawImage

Actual Behavior

• The source page always reports dimensions based on the media box and never the crop box
• When I attempt to use the crop box as the srcRect for XGraphics.DrawImage, the image is squished.

Steps to Reproduce the Behavior

See issue submission template for code.

• Use XPdfForm.FromStream to open the source PDF and then set the page index.
• Create a new destination PDF and PDF page using the width and height of the source page's crop box
• Use the XPdfForm object as the source image in a call to XGraphics.DrawImage
• Use the source crop box dimensions as the srcRect

Note

I tried this with both the current stable version as well as the new version (PDFSharp-GDI), both from nuget. In the attached code, the WPF project is using the new PDFSharp-GDI. The other projects are using the current stable version. So this is still an issue in the current release candidate.

Thanks!

[peter0302]

Hi just wondering if this is anything that's likely to be addressed in the new release. This is affecting a great number of our PDFs.

[TH-Soft]

I can only speak for myself. Most likely I will not address this with the next NuGet release.
I want to release a new "stable" version before tackling bigger changes that could lead to new bugs.

[peter0302]

Totally understood. Thanks for the heads up. Helps us plan. Great work all around!

…

________________________________ From: Thomas Hövel <[email protected]> Sent: Tuesday, May 1, 2018 1:07:16 PM To: empira/PDFsharp Cc: Peter Moore; Author Subject: Re: [empira/PDFsharp] Issues with Crop Boxes, XPdfForm, and XGraphics.DrawImage (#54) I can only speak for myself. Most likely I will not address this with the next NuGet release. I want to release a new "stable" version before tackling bigger changes that could lead to new bugs. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<empira/PDFsharp#54 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AInpM75o-SV4YVg74eZL6dI42Fb60oG-ks5tuKRUgaJpZM4TaGcg>.