Bug #911 - OSX: add multistage support
* clutter/osx/clutter-backend-osx.{c,h}
(clutter_backend_osx_init_stage, clutter_backend_osx_get_stage,
clutter_backend_osx_redraw, clutter_backend_osx_create_stage,
clutter_backend_osx_ensure_context, clutter_backend_osx_class_init,
clutter_backend_osx_dispose, ClutterGLView:drawRect:):
* clutter/osx/clutter-stage-osx.{c,h} (clutter_stage_osx_realize,
ClutterGLWindow:setFrameSize:):
Adapt to new multistage backend API. Don't keep a pointer to
default stage. Derive from ClutterActor instead of ClutterStage.
Implement ClutterStageWindow interface. Paint, resize and
otherwise manipulate the wrapper rather than self when necessary.
(clutter_backend_post_parse): Create our singleton GL context
here. We could probably create the context when the default
stage is created, but I think this is more clean.
* clutter/osx/clutter-event-osx.c (clutter_event_osx_translate)
* clutter/osx/clutter-stage-osx.c (clutter_stage_osx_state_update,
ClutterGLWindow:windowShouldClose:):
* clutter/osx/clutter-stage-osx.h: Export ClutterGLWindow interface
for clutter-event-osx.c to easily get the stage for NSWindow.
Fill in ClutterEventAny::stage on our events.
Consistently use 'stage_osx' and 'wrapper' as variable names
when referring to ClutterStageOSX and ClutterStage objects
respectively.
