touch-packages team mailing list archive

[Matthew Paul Thomas <mpt@xxxxxxxxxxxxx>]

Looks like that "desired resolution" wasn't added to the design spec, so
I've just done that. <https://goo.gl/f8WRkn>

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https://bugs.launchpad.net/bugs/1469750

Title:
  [sdk] Programmatic slider movement is jerky

Status in Ubuntu UX:
  Fix Committed
Status in ubuntu-ui-toolkit package in Ubuntu:
  Confirmed

Bug description:
  [Updated description]

  Ubuntu 15.04 r51

  1. In System Settings, navigate to Brightness.
  2. Turn on "Adjust automatically" if it is not on already.
  3. Go into a much lighter or darker environment, for example by turning lights on/off.

  What you see: The slider pops suddenly from one point to another.

  What you should see: The slider slides smoothly, accelerating as it
  leaves its previous value, and decelerating as it reaches its new
  value.

  The brightness slider is just the first ever example of this: it
  should be a general property of sliders whenever their value is
  changed non-interactively.

  It may save time to fix bug 1388094 at the same time as this bug.

  –––

  Desired resolution:

  We need an easing curve for this animation. We use this animation
  curve: http://easings.net/#easeOutCubic for most animations of this
  type.

  Please use this easing curve for the animation between the two points
  on the programmatic slider.

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