D19764: Fix Minimap with QtCurve style

[Kåre Särs]

sars created this revision.
sars added a reviewer: brauch.
Herald added projects: Kate, Frameworks.
Herald added subscribers: kde-frameworks-devel, kwrite-devel.
sars requested review of this revision.

REVISION SUMMARY
  The handle of the scrollbar in QtCurve is much smaller than the scrollbar width when the minimap is on and does not fill the whole width.
  
  This patch moves to always have the scrollbar-handle use the whole width (-2 pixels)

TEST PLAN
  No visual difference with Breeze and with QtCurve the minimap scrollbar handle now uses the whole width of the scrollbar.

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D19764

AFFECTED FILES
  src/view/kateviewhelpers.cpp

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