= Screen Share: Remote Shadow & Control =

|| Service                               || Use           || shadow || control || scale || clipboard || multiple user ||
|| [[#VNC:_Remmina_.2F_Vino|VNC: Remmina / Vino]]   || only thinlinc || x      || x       || x     || x         || x     ||
|| [[#hello.math.uzh.ch_.2F_RocketChat|hello.math.uzh.ch]] || all OS        || x      || -       || -     || -         || x     ||
|| [[#Skype|Skype]]                      || all OS        || x      || -       || -     || -         || x     ||
|| [[#iPad|iPad]]                        ||iOS            || x      || -       || -     || -         || -     ||

<<TableOfContents>>

= VNC: Remmina / Vino =

Installed on thinlinc and available for all major linux distros.

'''Thinlinc:'''

 * [host] '''share''' screen: `Applications > Remote Desktop > Desktop Sharing`

   * [on] Allow other users to view your Desktop.
   * [on] Allow other users to control your Desktop.

 * [guest] '''join''' screen share: `Applications > Remote Desktop > Remmina`

{{attachment:remmina1.png}}   

   * The [host] has to accept the join request.
   * After saving the user - for future sessions just doubleclick the username.

{{attachment:remmina2.png}}   

  
== FAQ ==

 * Q: I am the host, I want to disconnect all guests!
   * A: [host] Click on the 'Desktop Sharing' icon in the top panel and choose `Disconnect <user>`.

 * Q: Fast way to join on a screen share?
   * A: [guest] Check the Remmina symbol in the top panel. Click on it and you'll see '''all your saved buddies'''.

 * Q: The name of my colleague does not appear in the chooser list!
   * A: [host] Let the colleague open a terminal and type: `vino.sh` - this will restart the 'Desktop Sharing'.

 * Q: Double click on the colleague's name opens the window and shows `Can't connect`!
   * A: [guest] `Stop Remmina and start again`. Explanation: if the colleague logs off from thinlinc and logs in again, a new server might be assigned. With restarting Remmina, the buddies list is updated with the latest server/buddy pairs.

 * Q: Sharing is fine, but the window is too big - it should be scaled!
   * A: [guest] On the left side switch on 'Toggle Scale Mode'

 * Q: The [host] says there is no 'screen share request' to acknowledge!
   * A: [host] Sometimes the window with the screen share request is in the background - look at the bottom task list for a window with 'bold' text, click on it and it comes to the front.


= hello.math.uzh.ch / RocketChat =

 * Install https://rocket.chat/install App
 * 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'

= Skype =

 * Install Skype client.
 * Create / use your Microsoft Account
 * Only shadow, no remote control.
 
Start:
 * Start a voice call via Skype.
 * 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