D18285: Fake mousehover whilst combobox is open

[David Edmundson]

davidedmundson created this revision.
Herald added a project: Plasma.
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davidedmundson requested review of this revision.

REVISION SUMMARY
  Under QWidgets the combobox menu steals the mouse focus, including under
  wayland. Because of this the root control remains visually hovered as
  you move the mouse through the window.
  
  QtQuick combo box is different and that doesn't apply.
  
  This patch is arguably a hack, but it provides the same QStyleOption
  hints for widgets and QQC2 which is our goal.

TEST PLAN
  Lots of debug in the QStyle

REPOSITORY
  R858 Qt Quick Controls 2: Desktop Style

REVISION DETAIL
  https://phabricator.kde.org/D18285

AFFECTED FILES
  org.kde.desktop/ComboBox.qml

To: davidedmundson
Cc: plasma-devel, jraleigh, GB_2, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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