touch-packages team mailing list archive

[Vesa Rautiainen <1368287@xxxxxxxxxxxxxxxxxx>]

** Changed in: ubuntu-ux
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1368287

Title:
  [App switcher] Different drag behaviour between items that can and
  cannot be closed

Status in the base for Ubuntu mobile products:
  Fix Released
Status in Ubuntu UX bugs:
  Fix Released
Status in unity8 package in Ubuntu:
  Fix Released
Status in unity8 package in Ubuntu RTM:
  Fix Released

Bug description:
  Drag to close is a great feature in application spread. In user
  testing it had a great success rate and users understood it and knew
  how to use it. The problem is the Dash item that's part of the spread
  but is the only item which cannot be closed. Currently the Dash item
  drag movement is similar to the movement of the items that actually
  can be closed.

  We want to make Dash drag different from others by restricting the
  movement while still responding to user's drag.

  ------------------------------------------------------------
  Desired solution

  Use restriction algorithm for dash item so that it moves along the
  drag but soon starts restricting the movement indicating that it's an
  item that cannot be closed.

  Here is quite nice elastic function that can be used:
  function elastic( currentPosition, limit ) {
      return limit * ( 1 - Math.pow( ( limit - 1 ) / limit, currentPosition ) )
  }

  Where:
  limit is the highest value that ever can be returned by the function
  current position is the value to be limited

  It's a bit hard to describe the parameters, therefore I created a prototype that should explain the usage. 
  Find it from: lp:~willow-team/willow/elasticRestriction

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