[Apps switcher] Visual feedback of user's finger movement needed throughout the gesture

[Vesa Rautiainen]

Right edge compound gesture has two phases. During the second phase all the recent applications stack together in to the apps spread. There is a second phase commit threshold value after which this stacking happens. Currently when this commit threshold has been exceeded user loses control over the gesture. There is no way to go back and the UI doesn't react to further finger movement to left. We want user to be in control also after the second commit line.

RIght edge gesture progress is explained and broken into pieces in this spec:
https://docs.google.com/a/canonical.com/document/d/1FC_-5yz5kPy_ZvTphaqxOgI5BPnALFbxRAO4eJkzlf8/edit#

There is already a bug about reversibility (movement back to right) after second commit line (#1355284). So this bug is to fix the non-responsiveness after second phase commit line when user moves finger towards left edge.

Steps to repro:
1. Start right edge swipe
2. keep finger pressed and drag to left until you reach the point when apps spread is formed
3. keep still finger pressed and move finger towards left

Current behaviour:
No visual feedback

Expected behaviour:
Applications should start moving to left and stack the way they do when they're dragged to left in normal spread use case

[Victor Tuson Palau (vtuson)]

not rtm blocker

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8 - 8.01+15.04.20141202-0ubuntu1

---------------
unity8 (8.01+15.04.20141202-0ubuntu1) vivid; urgency=low

  [ Michael Terry ]
  * Make sure that there is no window of opportunity for swiping away
    greeter before the lockscreen appears.
  * Don't allow dragging the greeter out from the left edge if it's
    hidden there. (LP: #1372952)

  [ Michał Sawicz ]
  * Move from Theme colour to direct UbuntuColors.orange for activity
    indicator and preview buttons

  [ Albert Astals ]
  * Use QImageReader not to load the image into memory twice (LP:
    #1384374)
  * Don't create the whole current scope delegates, just height * 3 (LP:
    #1384393, #1384374)
  * Make CroppedImageSizer async
  * Use ubuntu::connectivity::NetworkingStatus instead of
    QNetworkConfigurationManager
  * Compile with Qt 5.4 (LP: #1395636)

  [ Michael Zanetti ]
  * close previews and temp scopes on left edge/BFB (LP: #1391798)
  * make spread reversible (LP: #1368668, #1355284, #1368677)

  [ Andrea Cimitan ]
  * Different drag behaviour for not closable apps in spread (LP:
    #1368287)

  [ Daniel d'Andrada ]
  * Make UnityTestCase.touchFlick properly map event coordinates
 -- Ubuntu daily release <email address hidden> Tue, 02 Dec 2014 09:26:49 +0000

[Michał Sawicz (saviq)]

This is intertwined with the fix for bug #1355284, please accept for RTM.

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8 - 8.02+15.04.20150120~rtm-0ubuntu1

---------------
unity8 (8.02+15.04.20150120~rtm-0ubuntu1) 14.09; urgency=medium

  [ Albert Astals ]
  * Fix going to scopes when the Manage Dash is open (LP: #1403464)

  [ Josh Arenson ]
  * Create a PhysicalKeyMapper to handle all physical/hardware keys (LP:
    #1390393)

  [ Michael Zanetti ]
  * make spread reversible (LP: #1368668, #1355284, #1368677)

  [ Nick Dedekind ]
  * Unhook Lights interface from indicator widgets
 -- Ubuntu daily release <email address hidden> Tue, 20 Jan 2015 11:18:21 +0000

[Vesa Rautiainen (vesar)]

The final implementation is not exactly as described in design solution but that's fine. This was discussed with the engineer when implementing this and the current solution is actually better than the proposed one.