[Navigation] Launcher, Status bar and app switcher reveals too easy for Full Screen applications

[Bartosz Kosiorek]

I love playing games. One of my favourite game is "Cut the Rope". It is full screen game.

Unfortunately during playing when I swiping left/right/top edge, then launcher/status bar/app switcher are revealed (see attached screen shots).

I would like to propose improvement:
For full screen application, enable double edge swiping.

Use cases:

Status bar - top edge:
 1. Run full screen game eg. Cut the Rope (there is no status bar)
 2. First top edge swipe. Result:
     - Status bar appears.
     - Game is not interrupted.
     - Pressing/swiping any part of screen, except top edge swipe, hide status bar.
     - Pressing status bar hide it.
     - Only second top edge swipe reveal settings.
     - Every press and swipe, except top edge swipe, is transferred to the game, and status bar is hiding
 3. Second top edge swipe. Result: The settings are revealed. as for standard (non full-screen) mode.

Launcher - left edge:
 1. Run full screen game eg. Cut the Rope
 2. First left edge siwpe. Result:
     - Only half of launcher appears.
     - There is no dim.
     - No application changing.
     - Game is not interrupted.
     - Pressing/swiping any part of screen, except left edge swipe, hide launcher.
     - Pressing on launcher hide it.
     - Only second left edge swipe reveal launcher.
     - Every press and swipe, except left edge swipe, is transferred to the game and launcher is hiding.
 3. Second left edge swipe. Result: The launcher are revealed and it dim application. As for standard (non full-screen) mode.

 App switcher -right edge:
 1. Run full screen game eg. Cut the Rope
 2. First right edge swipe. Result:
    - Small bar appear on right side.
    - There is no dim.
    - There is no screen transformation
    - No application changing.
    - Game is not interrupted.
    - Pressing/swiping any part of screen, except right edge swipe, hide App switcher and app switcher is hiding.
    - Pressing on bar hide it.
    - Only second right edge swipe reveal App switcher.
    - Every press and swipe, except right edge swipe, is transferred to the game.
 3. Second right edge swipe. Result: Reveal an application switcher that shows all your recent apps and lets you choose between them. As for standard (non full-screen) mode.

[Albert Astals Cid (aacid)]

unity8 waiting for design -> Incomplete

[Vesa Rautiainen (vesar)]

I acknowledge that Ubuntu touch operating system is likely not the best one for gaming. Especially when it comes to swipe interaction games like cut the rope.

The solution described here is absolutely on the right track in my opinion. Thank you for the suggestion. I just think that the "edge gesture restriction mode" should not be on by default for all the fullscreen apps. For example our Ubuntu Gallery app is fullscreen but as it doesn't really have gesture heavy UI, making shell edge gestures more difficult doesn't make sense in this case.

Instead I would provide apps an API that they could use to enable the mode.
Let's see if this would fit to our product plans and schedules.

[Bartosz Kosiorek (gang65)]

Thanks Vesa for start working on it.
Can we enable "edge gesture restriction mode" by default for Full Screen Application, and provide API that allows disable it (for example for Ubuntu Gallery)?