[touch] The brightness/volume changes are not realtime

[Omer Akram]

Changing the screen brightness on my touch devices is not real time. The brightness should changes as we move along the slider but it seems the screen brightness is only changed when the the slider is untapped.

1. open battey Menu
2. try to change the brightness of the screen

What happens:
The brightness only changes when you leave the slider

What should happen:
Brightness change should be live.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: indicator-power 12.10.6+13.10.20130913-0ubuntu2
Uname: Linux 3.4.0-3-mako armv7l
ApportVersion: 2.12.2-0ubuntu1
Architecture: armhf
Date: Thu Sep 19 11:27:57 2013
InstallationDate: Installed on 2013-09-18 (0 days ago)
InstallationMedia: Ubuntu Saucy Salamander (development branch) - armhf (20130918)
MarkForUpload: True
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SourcePackage: indicator-power
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Charles Kerr (charlesk)]

This is coming from unity8/plugins/Unity/Indicators/qml/SliderMenuItem.qml, which uses the Ubuntu UI Toolkit's slider but explicitly sets the 'live' property to false so that there won't be realtime updates.

I'm not sure whether or not there was a Good Reason it was done this way. Looks like Renato wrote the original version that included the "live: false" line, so assigning him under also-affects Unity 8 so that he can give a second opinion on this ticket.

[Renato Araujo Oliveira Filho (renatofilho)]

@charles

I think I did that way because I was having problems to keep sync btw the UI and the backend, since the backend notifies the UI every time that the device changes the property, sometimes moving the slider is faster than update the device property, this cause the backend to notify a old value and the UI was changing to a old value instead of keep sync with the user interaction.

In my opinion the correct is ignore the backend updates during the user interaction but since the SDK component does not provide a way to know that (during the time that I was working on that), the easy way was update after the user interaction.

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:unity8 at revision 382, scheduled for release in unity8, milestone ubuntu-13.09

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8 - 7.82+13.10.20131004.1-0ubuntu1

---------------
unity8 (7.82+13.10.20131004.1-0ubuntu1) saucy; urgency=low

  [ Michał Sawicz ]
  * Bump to indicate support for extended snap decisions.
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    (LP: #1231948)
  * Drop network agents now that they're in indicator-network instead.

  [ Michal Hruby ]
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  * Added an indicator which is displayed in the search bar whenever a
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  [ Albert Astals ]
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  * Do not crash on positionAtBeginning if the list is empty .
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  [ Michael Terry ]
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  [ Gerry Boland ]
  * WM: ensure focusedApplicationWhenUsingScreenshots reset when unused,
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  [ Nick Dedekind ]
  * Removed deprecated Unity.IndicatorsLegacy plugin.
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  * Moved indicator page titles to the root action state of menu model.
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  [ Mirco Müller ]
  * Added rendering- and interaction-support for the first three
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  [ Daniel d'Andrada ]
  * Revert the reversion of r304 since it doesn't seem to crash anymore
    Original commit was Reset apps scope when returning from app to dash
    (LP #1193419) If an app is on foreground and you perform a long
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  [ Andrea Cimitan ]
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  * Make Tile themeable, add renderers for Dash Plugins and weather.
    (LP: #1231948)

  [ Michael Zanetti ]
  * fix inserting into quicklistmodel.
  * Drop useStorage argument and use exising LAUNCHER_TESTING define for
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  [ Omer Akram ]
  * Make the volume/brightness slider changes realtime. (LP: #1227595)

  [ Nicolas d'Offay ]
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    #1233657)
  * Added an indicator which is displayed in the search bar whenever a
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  [ Ubuntu daily release ]
  * Automatic snapshot from revision 390
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