D29534: Implement scroll and drag adjustment of values for SpinBox control

[Nathaniel Graham]

ngraham added a comment.


  In D29534#666554 <https://phabricator.kde.org/D29534#666554>, @ndavis wrote:
  
  > I don't like the look of those +/- buttons. I think this makes it harder to know that you can drag the panel height up and down.
  
  
  That would be a comment for D29535 <https://phabricator.kde.org/D29535>, but I will repeat my argument here: I think that drag is the least important interaction method for panel thickness adjustment since you typically want to make fine adjustments or arrive at a specific value, both of which are unsuited for drag-based interactions. Nevertheless, I have implemented drag-adjustment in the spinbox control here to not lose it, which also yields the advantage that other potential Plasma components that use a spinbox will benefit from it.
  
  We can improve the look of this control in another patch. To my knowledge it hasn't been used at all so it wouldn't surprise me if it's a bit unpolished.

REPOSITORY
  R242 Plasma Framework (Library)

REVISION DETAIL
  https://phabricator.kde.org/D29534

To: ngraham, #vdg, #plasma
Cc: ndavis, cblack, kde-frameworks-devel, LeGast00n, michaelh, ngraham, bruns
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