D27017: [KColorUtils] Add hue(), chroma() and getHcyColor()

[Noah Davis]

ndavis created this revision.
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REVISION SUMMARY
  This patch provides ways to get just the hue or just the chroma in the HCY colorspace and a way to get a QColor based on given hue, chroma, luma and alpha values.

REPOSITORY
  R273 KGuiAddons

BRANCH
  hue-chroma (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D27017

AFFECTED FILES
  src/colors/kcolorspaces.cpp
  src/colors/kcolorspaces_p.h
  src/colors/kcolorutils.cpp
  src/colors/kcolorutils.h

To: ndavis
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns
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