Review Request 123621: Fix reverse scroll setting in Mouse KCM

[Rajeesh K Nambiar]

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https://git.reviewboard.kde.org/r/123621/#review79861
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Reverse scrolling works in KF5 based apps (tested with dolphin, konsole etc) and gtk+ apps like firefox here - using synaptics driver. Also see the discussion in bug report https://bugs.kde.org/show_bug.cgi?id=342929 where only KDE4 apps are reported to be affected. Could you share more details?

- Rajeesh K Nambiar


On May 4, 2015, 9:10 a.m., Yue Liu wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/123621/
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> (Updated May 4, 2015, 9:10 a.m.)
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> Review request for Plasma.
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> Repository: plasma-desktop
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> Description
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> The old swap-button-map method for reverse scroll doesn't work for Qt5, this patch uses XInput2 api to negate "Evdev Scroll Distance" for device with real scroll wheel, and swap "Evdev Wheel Emulation Axes" when device uses emulated scroll wheel, such as Thinkpad Trackpoint.
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> Diffs
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>   kcms/input/CMakeLists.txt 6cbe207 
>   kcms/input/mouse.cpp 1450de8 
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> Diff: https://git.reviewboard.kde.org/r/123621/diff/
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> Testing
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> built on archlinux and tested by replacing kcm_input.so, new kcm works on my machine.
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> Thanks,
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> Yue Liu
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