[okular] [Bug 421206] New: okular full screen mode does not allow for WebRTC screensharing in Firefox/Chromium

[Robert Riemann]

https://bugs.kde.org/show_bug.cgi?id=421206

            Bug ID: 421206
           Summary: okular full screen mode does not allow for WebRTC
                    screensharing in Firefox/Chromium
           Product: okular
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: robert at riemann.cc
  Target Milestone: ---

Dear Okular community,

I am not sure where to look for the problem. So I start here. Please direct me
towards the root of the issue if you know better.

Problem Description:

1. open any PDF with okular (on Linux)
2. switch to full screen.
3. notice that a 2nd window is opened which shows no control elements, but just
the PDF
4. open Chromium/Firefox, navigate to
https://mozilla.github.io/webrtc-landing/gum_test.html and click Screen Capture
to simulate e.g. sharing slides during a video conference with tools such as
Meet.Jitsi or bigBluebutton etc.
5. Both tested browsers present a list of application windows that can be
shared, that does not contain the full screen window with the slides, but only
the main window of Okular.

Okular’s full screen window cannot be used currently to present full screen
slides in WebRTC video conferences. The only option is to share the entire
screen and have the okular window full screen. Disadvantage: you cannot see the
chat or other participants.

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