8008f0b7b0
This changes the setup phase of clutter to not be result of calling an init function that sets up a few global singletons, via global singleton setup vfuncs. The way it worked was that mutter first did some initial setup (connecting to the X11 server), then set a "custom backend" setup vfunc global, before calling clutter_init(). During the clutter_init() call, the context and backend was setup by calling the global singleton getters, which implicitly created the backend and context on-demand. This has now changed to mutter explicitly creating a `ClutterContext` (which is actually a `ClutterMainContext`, but with the name shortened to be consistent with `CoglContext` and `MetaContext`), calling it with a backend constructor vfunc and user data pointer. This function now explicitly creates the backend, without having to go via the previously set global vfunc. This changes the behavior of some "get_default()" like functions, which will now fail if called after mutter has shut down, as when it does so, it now destroys the backends and contexts, not only its own, but the clutter ones too. The "ownership" of the clutter backend is also moved to `ClutterContext`, and MetaBackend is changed to fetch it via the clutter context. This also removed the unused option parsing that existed in clutter. In some places, NULL checks for fetching the clutter context, or backend, and fetching the cogl context from the clutter backend, had to be added. The reason for this is that some code that handles EGL contexts attempts to restore the cogl EGL context tracking so that the right EGL context is used by cogl the next time. This makes no sense to do before Cogl and Clutter are even initialized, which was the case. It wasn't noticed because the relevant singletons were initialized on demand via their "getters". Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2002>
129 lines
4.5 KiB
C
129 lines
4.5 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2016 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef __CLUTTER_MUTTER_H__
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#define __CLUTTER_MUTTER_H__
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#define __CLUTTER_H_INSIDE__
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#include "clutter-backend.h"
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#include "clutter-backend-private.h"
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#include "clutter-damage-history.h"
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#include "clutter-event-private.h"
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#include "clutter-input-device-private.h"
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#include "clutter-input-pointer-a11y-private.h"
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#include "clutter-macros.h"
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#include "clutter-private.h"
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#include "clutter-stage-private.h"
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#include "clutter-stage-view.h"
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#include "clutter-stage-view-private.h"
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#include "clutter.h"
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typedef struct _ClutterMainContext ClutterContext;
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typedef ClutterBackend * (* ClutterBackendConstructor) (gpointer user_data);
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/**
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* clutter_context_new: (skip)
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*/
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CLUTTER_EXPORT
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ClutterContext * clutter_context_new (ClutterBackendConstructor backend_constructor,
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gpointer user_data,
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GError **error);
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/**
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* clutter_context_free: (skip)
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*/
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CLUTTER_EXPORT
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void clutter_context_free (ClutterContext *clutter_context);
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/**
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* clutter_context_get_backend:
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*
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* Returns: (transfer none): The corresponding %ClutterBackend
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*/
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CLUTTER_EXPORT
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ClutterBackend * clutter_context_get_backend (ClutterContext *clutter_context);
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CLUTTER_EXPORT
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GList * clutter_stage_peek_stage_views (ClutterStage *stage);
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CLUTTER_EXPORT
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gboolean clutter_actor_is_effectively_on_stage_view (ClutterActor *self,
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ClutterStageView *view);
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CLUTTER_EXPORT
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int64_t clutter_stage_get_frame_counter (ClutterStage *stage);
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CLUTTER_EXPORT
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void clutter_stage_capture_view_into (ClutterStage *stage,
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ClutterStageView *view,
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cairo_rectangle_int_t *rect,
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uint8_t *data,
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int stride);
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CLUTTER_EXPORT
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void clutter_stage_clear_stage_views (ClutterStage *stage);
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CLUTTER_EXPORT
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void clutter_stage_view_assign_next_scanout (ClutterStageView *stage_view,
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CoglScanout *scanout);
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CLUTTER_EXPORT
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gboolean clutter_actor_has_damage (ClutterActor *actor);
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CLUTTER_EXPORT
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gboolean clutter_actor_has_transitions (ClutterActor *actor);
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CLUTTER_EXPORT
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ClutterFrameClock * clutter_actor_pick_frame_clock (ClutterActor *self,
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ClutterActor **out_actor);
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CLUTTER_EXPORT
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gboolean clutter_seat_handle_event_post (ClutterSeat *seat,
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const ClutterEvent *event);
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CLUTTER_EXPORT
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void clutter_stage_update_device (ClutterStage *stage,
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ClutterInputDevice *device,
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ClutterEventSequence *sequence,
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graphene_point_t point,
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uint32_t time,
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ClutterActor *new_actor,
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gboolean emit_crossing);
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CLUTTER_EXPORT
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void clutter_stage_get_device_coords (ClutterStage *stage,
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ClutterInputDevice *device,
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ClutterEventSequence *sequence,
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graphene_point_t *coords);
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CLUTTER_EXPORT
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void clutter_stage_repick_device (ClutterStage *stage,
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ClutterInputDevice *device);
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CLUTTER_EXPORT
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void clutter_get_debug_flags (ClutterDebugFlag *debug_flags,
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ClutterDrawDebugFlag *draw_flags,
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ClutterPickDebugFlag *pick_flags);
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#undef __CLUTTER_H_INSIDE__
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#endif /* __CLUTTER_MUTTER_H__ */
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