[Differential] [Request, 121 lines] D3093: Add a PlatformCursorImage to Platform and EffectsHandler

[graesslin (Martin Gräßlin)]

graesslin created this revision.
graesslin added reviewers: KWin, Plasma on Wayland.
Restricted Application added subscribers: kwin, plasma-devel.
Restricted Application added projects: Plasma on Wayland, KWin.

REVISION SUMMARY
  There are several effects (screenshot, zoom) which need access to the
  cursor image and cursor hotspot. So far these effects used X11
  unconditionally to get the cursor which obviously does not work on
  Wayland.
  
  This change adds a new class PlatformCursorImage to kwinglobals which
  wraps what a cursor is (image and hotspot) and adds a new virtual method
  to Platform to provide such a PlatformCursorImage. By default it's the
  cursor image the Platform tracks. On X11/standalone platform this new
  virtual method is overriden and provides a PlatformCursorImage from X11
  using the code previously used in screenshot effect.
  
  Screenshot effect and zoom are adjusted to use the new API instead of
  X11.

TEST PLAN
  Zoom effect tested on Wayland, now gets the proper cursor icon.
  X11 functionality not yet tested.

REPOSITORY
  rKWIN KWin

BRANCH
  platform-cursor-image

REVISION DETAIL
  https://phabricator.kde.org/D3093

AFFECTED FILES
  autotests/mock_effectshandler.h
  effects.cpp
  effects.h
  effects/screenshot/screenshot.cpp
  effects/zoom/zoom.cpp
  libkwineffects/CMakeLists.txt
  libkwineffects/kwineffects.h
  libkwineffects/kwinglobals.h
  platform.cpp
  platform.h
  plugins/platforms/x11/standalone/x11_platform.cpp
  plugins/platforms/x11/standalone/x11_platform.h

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: graesslin, #kwin, #plasma_on_wayland
Cc: plasma-devel, kwin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas
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