D11631: Fixes pixelated icon scaling for HiDPI screens This enables HiDPI pixmaps in the main window. This commit also replaces QPixmap and KIconLoader with QIcon to load properly scaled icons in the tree menu for HiDPI screens.

[Andrew Crouthamel]

acrouthamel created this revision.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.
acrouthamel requested review of this revision.

TEST PLAN
  Open icon selection in main window. Expand tree menu and ensure selection 
works.

REPOSITORY
  R103 KMenu Editor

BRANCH
  fix-icons (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D11631

AFFECTED FILES
  main.cpp
  treeview.cpp

To: acrouthamel
Cc: plasma-devel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, 
sebas, apol, mart