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mutter/clutter/clutter-private.h
Emmanuele Bassi 6988744db7 [stage] Rework the Stage implementation class 
Instead of using ClutterActor for the base class of the Stage
implementation we should extend the StageWindow interface with
the required bits (geometry, realization) and use a simple object
class.

This require a wee bit of changes across Backend, Stage and
StageWindow, even though it's mostly re-shuffling.

First of all, StageWindow should get new virtual functions:

  * geometry:
    - resize()
    - get_geometry()

  * realization
    - realize()
    - unrealize()

This covers all the bits that we use from ClutterActor currently
inside the stage implementations.

The ClutterBackend::create_stage() virtual function should create
a StageWindow, and not an Actor (it should always have been; the
fact that it returned an Actor was a leak of the black magic going
on underneath). Since we never guaranteed ABI compatibility for
the Backend class, this is not a problem.

Internally to ClutterStage we can finally drop the shenanigans of
setting/unsetting actor flags on the implementation: if the realization
succeeds, for instance, we set the REALIZED flag on the Stage and
we're done.

As an initial proof of concept, the X11 and GLX stage implementations
have been ported to the New World Order(tm) and show no regressions.
2009-09-08 10:52:58 +01:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _HAVE_CLUTTER_PRIVATE_H
#define _HAVE_CLUTTER_PRIVATE_H
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <math.h>
#include <glib.h>
#include "pango/cogl-pango.h"
#include "clutter-backend.h"
#include "clutter-event.h"
#include "clutter-feature.h"
#include "clutter-id-pool.h"
#include "clutter-master-clock.h"
#include "clutter-stage-manager.h"
#include "clutter-stage-window.h"
#include "clutter-stage.h"
#include "clutter-timeline.h"
G_BEGIN_DECLS
typedef enum {
CLUTTER_ACTOR_UNUSED_FLAG = 0,
CLUTTER_ACTOR_IN_DESTRUCTION = 1 << 0,
CLUTTER_ACTOR_IS_TOPLEVEL = 1 << 1,
CLUTTER_ACTOR_IN_REPARENT = 1 << 2,
CLUTTER_ACTOR_SYNC_MATRICES = 1 << 3, /* Used by stage to indicate GL
* viewport / perspective etc
* needs (re)setting.
*/
CLUTTER_ACTOR_IN_PAINT = 1 << 4, /* Used to avoid recursion */
CLUTTER_ACTOR_IN_RELAYOUT = 1 << 5, /* Used to avoid recursion */
CLUTTER_STAGE_IN_RESIZE = 1 << 6
} ClutterPrivateFlags;
struct _ClutterInputDevice
{
gint id;
ClutterInputDeviceType device_type;
ClutterActor *pointer_grab_actor;
ClutterActor *motion_last_actor;
gint click_count;
gint previous_x;
gint previous_y;
guint32 previous_time;
gint previous_button_number;
};
typedef struct _ClutterMainContext ClutterMainContext;
struct _ClutterMainContext
{
ClutterBackend *backend; /* holds a pointer to the windowing
system backend */
GQueue *events_queue; /* the main event queue */
guint is_initialized : 1;
guint motion_events_per_actor : 1;/* set for enter/leave events */
guint defer_display_setup : 1;
guint options_parsed : 1;
GTimer *timer; /* Used for debugging scheduler */
ClutterPickMode pick_mode; /* Indicates pick render mode */
gint num_reactives; /* Num of reactive actors */
ClutterIDPool *id_pool; /* mapping between reused integer ids
* and actors
*/
guint frame_rate; /* Default FPS */
ClutterActor *pointer_grab_actor; /* The actor having the pointer grab
* (or NULL if there is no pointer grab
*/
ClutterActor *keyboard_grab_actor; /* The actor having the pointer grab
* (or NULL if there is no pointer
* grab)
*/
GSList *shaders; /* stack of overridden shaders */
ClutterActor *motion_last_actor;
/* fb bit masks for col<->id mapping in picking */
gint fb_r_mask, fb_g_mask, fb_b_mask;
gint fb_r_mask_used, fb_g_mask_used, fb_b_mask_used;
PangoContext *pango_context; /* Global Pango context */
CoglPangoFontMap *font_map; /* Global font map */
GSList *input_devices; /* For extra input devices, i.e
MultiTouch */
guint32 last_event_time;
gulong redraw_count;
GList *repaint_funcs;
};
#define CLUTTER_CONTEXT() (_clutter_context_get_default ())
ClutterMainContext *_clutter_context_get_default (void);
gboolean _clutter_context_is_initialized (void);
PangoContext *_clutter_context_create_pango_context (ClutterMainContext *self);
PangoContext *_clutter_context_get_pango_context (ClutterMainContext *self);
#define CLUTTER_PRIVATE_FLAGS(a) (((ClutterActor *) (a))->private_flags)
#define CLUTTER_SET_PRIVATE_FLAGS(a,f) (CLUTTER_PRIVATE_FLAGS (a) |= (f))
#define CLUTTER_UNSET_PRIVATE_FLAGS(a,f) (CLUTTER_PRIVATE_FLAGS (a) &= ~(f))
#define CLUTTER_PARAM_READABLE \
G_PARAM_READABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB
#define CLUTTER_PARAM_WRITABLE \
G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB
#define CLUTTER_PARAM_READWRITE \
G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK |G_PARAM_STATIC_BLURB
#define I_(str) (g_intern_static_string ((str)))
/* stage manager */
struct _ClutterStageManager
{
GObject parent_instance;
GSList *stages;
};
void _clutter_stage_manager_add_stage (ClutterStageManager *stage_manager,
ClutterStage *stage);
void _clutter_stage_manager_remove_stage (ClutterStageManager *stage_manager,
ClutterStage *stage);
/* stage */
void _clutter_stage_set_window (ClutterStage *stage,
ClutterStageWindow *stage_window);
ClutterStageWindow *_clutter_stage_get_window (ClutterStage *stage);
ClutterStageWindow *_clutter_stage_get_default_window (void);
void _clutter_stage_maybe_setup_viewport (ClutterStage *stage);
void _clutter_stage_maybe_relayout (ClutterActor *stage);
gboolean _clutter_stage_needs_update (ClutterStage *stage);
gboolean _clutter_stage_do_update (ClutterStage *stage);
void _clutter_stage_queue_event (ClutterStage *stage,
ClutterEvent *event);
gboolean _clutter_stage_has_queued_events (ClutterStage *stage);
void _clutter_stage_process_queued_events (ClutterStage *stage);
/* vfuncs implemented by backend */
GType _clutter_backend_impl_get_type (void);
void _clutter_backend_redraw (ClutterBackend *backend,
ClutterStage *stage);
ClutterStageWindow *_clutter_backend_create_stage (ClutterBackend *backend,
ClutterStage *wrapper,
GError **error);
void _clutter_backend_ensure_context (ClutterBackend *backend,
ClutterStage *stage);
gboolean _clutter_backend_create_context (ClutterBackend *backend,
gboolean is_offscreen,
GError **error);
void _clutter_backend_add_options (ClutterBackend *backend,
GOptionGroup *group);
gboolean _clutter_backend_pre_parse (ClutterBackend *backend,
GError **error);
gboolean _clutter_backend_post_parse (ClutterBackend *backend,
GError **error);
void _clutter_backend_init_events (ClutterBackend *backend);
ClutterFeatureFlags _clutter_backend_get_features (ClutterBackend *backend);
gfloat _clutter_backend_get_units_per_em (ClutterBackend *backend,
PangoFontDescription *font_desc);
void _clutter_feature_init (void);
/* Reinjecting queued events for processing */
void _clutter_process_event (ClutterEvent *event);
/* Picking code */
ClutterActor *_clutter_do_pick (ClutterStage *stage,
gint x,
gint y,
ClutterPickMode mode);
/* the actual redraw */
void _clutter_do_redraw (ClutterStage *stage);
guint _clutter_pixel_to_id (guchar pixel[4]);
void _clutter_id_to_color (guint id, ClutterColor *col);
/* use this function as the accumulator if you have a signal with
* a G_TYPE_BOOLEAN return value; this will stop the emission as
* soon as one handler returns TRUE
*/
gboolean _clutter_boolean_handled_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy);
void _clutter_actor_apply_modelview_transform_recursive (ClutterActor *self,
ClutterActor *ancestor);
void _clutter_actor_rerealize (ClutterActor *self,
ClutterCallback callback,
void *data);
void _clutter_actor_set_opacity_parent (ClutterActor *self,
ClutterActor *parent);
void _clutter_actor_set_enable_model_view_transform (ClutterActor *self,
gboolean enable);
void _clutter_actor_set_enable_paint_unmapped (ClutterActor *self,
gboolean enable);
void _clutter_run_repaint_functions (void);
G_END_DECLS
#endif /* _HAVE_CLUTTER_PRIVATE_H */
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