= Screen Share: Remote Shadow & Control =

|| Service                               || Use           || shadow || control || scale || clipboard || multiple user ||
|| [[#VNC: shadow ]]   || thinlinc, imath flips || x      || x       || -     || -         || x     ||
|| [[#hello.math.uzh.ch_.2F_RocketChat|hello.math.uzh.ch]] || all OS        || x      || -       || -     || -         || x     ||
|| [[#iPad|iPad]]                        ||iOS            || x      || -       || -     || -         || -     ||

<<TableOfContents>>

= VNC: shadow =

`shadow` allows for simplified VNC Screensharing between Thinlinc sessions and flips. 

 * Start "Shadow Screenshare" from the applications menu, a system tray icon will appear. (Bottom right on Thinlinc, top right on laptops & flips.)

{{attachment:shadow_icon_screenshot.png}}

 * Left click on the icon and choose either 'View' or 'Share with', a text box will appear where you can enter an ID. Real world examples:
   * Click 'View', enter `crose` to shadow a colleague with that username. They get a popup asking for permission.
   * Click 'Share', enter 'enured' to share your screen with a colleague with that username. They'll get a popup asking if they want to see your screen. If they accept, it'll ''again'' ask you if you actually want to share your screen with them.
   * Click 'Share', enter a room number like `k11` or `k30` to ''project'' your screen to a flip nuc. These are configured to accept shares by default, so you'll get a view request right back.
 * A list of all your recent actions is kept, so you don't have to type your colleagues name each time. Simply select an action from the tray icon's menu.
 * To disconnect all connected clients, there's a button above the `Quit` menu in the tray icon's menu.
  
{{attachment:shadow_menu.png}}

There is currently no clipboard or scaling support. It's planned for version 2.

= hello.math.uzh.ch / RocketChat =

 * Install https://rocket.chat/install App - or just visit the URL with  your browser.
 * Server: hello.math.uzh.ch
 * Account: I-MATH username/password
 * Only shadow, no remote control.

Start:
 * Start a voice call via !RocketChat.
 * Click on 'screen share'

= iPad =

 * Overview: [[https://www.imyfone.com/mirror-tips/mirror-ipad-to-mac/|1]], [[https://9to5mac.com/2020/03/30/screen-share-iphone-ipad-mac/|2]]
 * Native !AirPlay: https://support.apple.com/en-us/HT204289
 * [[https://appleinsider.com/articles/18/03/26/tip-record-your-ipads-screen-on-your-mac-with-quicktime-player|Quicktime]]
 * Commercial:

   * [[https://letsview.com/share-ipad-screen-on-mac.html|letsview]] 
   * [[https://www.airserver.com/Mac|AirServer]]
   * [[https://support.zoom.us/hc/en-us/articles/115005890803-iOS-Screen-Sharing|Zoom]] - be carefull, Zoom might block the microphone for other applications, sometimes even a reboot is necessary to get back access to the microphone for other applications.

== iPad > Linux ==

 * https://github.com/FD-/RPiPlay (https://github.com/antimof/UxPlay)
{{{
[user@ubuntu20.04]
$ sudo apt-get install cmake libavahi-compat-libdnssd-dev libplist-dev libssl-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-libav gstreamer1.0-vaapi gstreamer1.0-plugins-bad

$ git clone https://github.com/FD-/RPiPlay.git
$ cd RPiPlay
$ mkdir build; cd build; cmake ..
$ make
$ sudo make install

# On problems it might help to install:
$ sudo apt install ubuntu-restricted-extras vlc

# Start
$ rpiplay


}}}

 * On the iPad, share the screen: https://support.apple.com/en-us/HT204289. 
 
   * Select `rpiplay` as destination (is only shown as long as on the Linux host the program `rpiplay` is running)

 * On the linux host a window pops up.
 * A compiled version of rpiplay for Linux Ubuntu 20.04 is available under https://drive.math.uzh.ch/index.php/s/ek3oFfHb4Z9zaYt

{{attachment:rpiplay.png}}

= Android Tablet =

 

= Problem =

== Mac OS X Catalina / 10.15 ==

Each applications needs the screen record privilege: https://help.daily.co/en/articles/3400532-enable-screen-recording-permission-for-macos-catalina-10-15-and-later