Review Request 122505: Warn about brightness getting too low

[Mark Gaiser]

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I'm not quite sure if a user wants to see a warning message at all.
When i use my notebook in a dark environment i usually put the brightness all the way down (depending on the notebook).

- Mark Gaiser


On feb 9, 2015, 10:25 p.m., Kai Uwe Broulik wrote:
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> https://git.reviewboard.kde.org/r/122505/
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> (Updated feb 9, 2015, 10:25 p.m.)
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> 
> Review request for Plasma and KDE Usability.
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> Repository: plasma-workspace
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> Description
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> Some graphics drivers, notably Intel, turn off the backlight completely when brightness reached zero, which is also in the spec (0 = off, 1 = very dim) but imho that's unexpected. To prevent the user from accidentally turnign the screen off, especially when keyboard brightness controls don't work, which sadly still happens quite often, the slider breaks free from the user's drag (by becoming disable for two (perhaps 1 is enough?) seconds, so we also catch the mouse wheel case) and displays a warning (which stays there until screen brightness is dialed up again).
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> Diffs
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>   applets/batterymonitor/package/contents/ui/BrightnessItem.qml 546ab58 
>   applets/batterymonitor/package/contents/ui/PopupDialog.qml a2acf31 
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> Diff: https://git.reviewboard.kde.org/r/122505/diff/
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> Testing
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> Works pretty well, I just realized I forgot the mousewheel-on-trayicon case. Also, I'm open to wording suggestions since it sounds more like "we suck, sorry about that". (Note in the screenshot I used the mouse wheel, hence the displayed 4% rather than 5)
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> File Attachments
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> Screenshot
>   https://git.reviewboard.kde.org/media/uploaded/files/2015/02/09/8b585088-e33e-4862-9c46-207d06f566f1__dimwarning.png
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> Thanks,
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> Kai Uwe Broulik
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