D20730: Change default window actions modifier key to Meta

GB_2 created this revision.
GB_2 added reviewers: KWin, VDG.
Herald added a project: KWin.
Herald added a subscriber: kwin.
GB_2 requested review of this revision.

REVISION SUMMARY
  This patch changes the default window actions modifier key to Meta instead of Alt, because Alt causes problems in a lot of very popular and professional software such as Blender, GIMP, Inkscape, Krita, Gravit, Shotcut or even Krita! It prevents you from using some functions in those programs. We already use Meta for a lot of things such as window tiling, so we should use it for the window actions modifier too. In general, Meta should be used in global/shell shortcuts. GNOME changed it in the past too because of those reasons. If this default will get changed we should also announce it in the next Plasma release notes to make people aware about this change.

TEST PLAN
  Delete the default KWin config files and try using Meta+Click to move a window.

REPOSITORY
  R108 KWin

BRANCH
  change-default-window-actions-modifier-key-to-meta (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D20730

AFFECTED FILES
  autotests/integration/decoration_input_test.cpp
  autotests/integration/internal_window.cpp
  autotests/integration/pointer_constraints_test.cpp
  autotests/integration/pointer_input.cpp
  kcmkwin/kwinoptions/mouse.cpp
  kwin.kcfg
  options.cpp

To: GB_2, #kwin, #vdg
Cc: #vdg, kwin, #kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, ngraham, alexeymin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart