[tbb-bugs] #32713 [Applications/Tor Browser]: Letterboxing doesn't work when fullscreening videos (it covers exactly the whole screen)

Tue Dec 10 21:37:32 UTC 2019

#32713: Letterboxing doesn't work when fullscreening videos (it covers exactly the
whole screen)
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 Reporter:  cypherpunks                    |          Owner:  tbb-team
     Type:  defect                         |         Status:  new
 Priority:  Medium                         |      Milestone:
Component:  Applications/Tor Browser       |        Version:
 Severity:  Normal                         |     Resolution:
 Keywords:  tbb-fingerprinting-resolution  |  Actual Points:
Parent ID:                                 |         Points:
 Reviewer:                                 |        Sponsor:
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Comment (by Thorin):

 Here's an image element doing the same thing

 {{{
 <!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
 <title>FS Element</title>
 <style>
 body {background-color: white; color: black;}
 </style>
 </head>
 <body>
 <img id="image" width=0 height=0></img>
 <button onClick="goFS()">click me to go full screen</button>
 <script>
 function goFS() {
         if (document.mozFullScreenEnabled) {
                 let element = document.getElementById("image");
                 element.mozRequestFullScreen();
         };
 }
 </script>
 </body>
 </html>
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32713#comment:2>
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