D14758: use view lines for wheel scrolling, not real lines

[Nathaniel Graham]

ngraham added a comment.


  Thanks for the patch, Sven!
  
  There are two issues with scrolling:
  
  1. Multi-line strings are inappropriately treated as a single line for the purposes of scrolling
  2. Lack of per-pixel scrolling that touchpad users expect.
  
  This patch fixes #1, but not #2. I've untangles the Bugzilla tickets such that https://bugs.kde.org/show_bug.cgi?id=256561 now only tracks #1, so I think you're free to add `BUG: 256561` to this patch. We will track pixel-by-pixel scrolling separately with https://bugs.kde.org/show_bug.cgi?id=378275.

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D14758

To: brauch, dhaumann
Cc: ngraham, kwrite-devel, kde-frameworks-devel, michaelh, kevinapavew, bruns, demsking, cullmann, sars, dhaumann
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