Special interface for PDF-file in CefSharp

[yura2015]

When a PDF file is uploaded to CefSharp, a special interface is visible in the window. Can you tell me in which CefSharp class this interface is edited (created)? I need to change (hide some elements, namely "more actions" and "rotatecounterclockwise").
v107.1.4

And is there an opportunity and how to change (hide some elements, namely "more actions" and "rotatecounterclockwise") the interface of such a file opened in CefSharp on the page page using JavaScript, for example: pdfObj.data = path + '#page=' + page + '&zoom=1&view=FitH&scrollbar=0'; ? How it worked in IE 6.0-8.0.

[amaitland]

Can you tell me in which CefSharp class this interface is edited (created)?

The PDF Viewer(PDFium) is implemented entirely in Chromium. There's no options for customising these features currently. You could possibly disable the PDF Viewer and use say https://mozilla.github.io/pdf.js/ to render the PDF. I've not tried this in recent version.

You can try posting on https://www.magpcss.org/ceforum/viewforum.php?f=7 to see if support can be added.

for example: pdfObj.data = path + '#page=' + page + '&zoom=1&view=FitH&scrollbar=0';

Some of those arguments should work if passed as part of the URL. Basically it's whatever the underlying version of Chromium supports.

Try open the URL directly to see if they work.

[yura2015]

Thanks for the help. And could you clarify in which Chromium class this is implemented, (maybe in which files, if you know)? This class(s) is there in the source texts that are available in this project? I would really like to understand how it works.

[amaitland]

From memory the PDF Viewer UI is actually implemented in HTML, it's probably in one of the pak files.

You can search the Chromium Source online at https://cs.chromium.org/

[yura2015]

I have sources from https://github.com/cefsharp/CefSharp /. Are they not the same ones? I was trying to find a description of the interface for PDF files right here.
If the interface description is in pak files, then of course I can't do anything about it..
Disable the PDF viewer and use https://mozilla.github.io/pdf .js is unrealistic for me. I can't imagine how this is possible at all.
Thanks for the information.

[amaitland]

I have sources from https://github.com/cefsharp/CefSharp /. Are they not the same ones? I was trying to find a description of the interface for PDF files right here.

You won't find the PDF Viewer in this repository, it's implemented in Chomium.

Read the first few paragraphs of https://github.com/cefsharp/CefSharp/wiki/General-Usage to get a better understanding of the project.

Disable the PDF viewer and use https://mozilla.github.io/pdf .js is unrealistic for me. I can't imagine how this is possible at all.

It's likely easier to use pdf.js than compile your own custom patched chromium.

Otherwise you might need to look into another non CEF based solution.

[yura2015]

Good. Thanks for the information.