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mutter/clutter/clutter/clutter-stage.h

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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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __CLUTTER_STAGE_H__
#define __CLUTTER_STAGE_H__
#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <clutter/clutter.h> can be included directly."
#endif
#include <clutter/clutter-actor.h>
#include <clutter/clutter-types.h>
#include <clutter/clutter-stage-view.h>
G_BEGIN_DECLS
#define CLUTTER_TYPE_STAGE (clutter_stage_get_type())
#define CLUTTER_STAGE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_STAGE, ClutterStage))
#define CLUTTER_STAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_STAGE, ClutterStageClass))
#define CLUTTER_IS_STAGE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_STAGE))
#define CLUTTER_IS_STAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_STAGE))
#define CLUTTER_STAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_STAGE, ClutterStageClass))
typedef struct _ClutterStageClass ClutterStageClass;
typedef struct _ClutterStagePrivate ClutterStagePrivate;
/**
* ClutterStage:
*
* The #ClutterStage structure contains only private data
* and should be accessed using the provided API
*
* Since: 0.2
*/
struct _ClutterStage
{
/*< private >*/
ClutterActor parent_instance;
ClutterStagePrivate *priv;
};
/**
* ClutterStageClass:
* @activate: handler for the #ClutterStage::activate signal
* @deactivate: handler for the #ClutterStage::deactivate signal
*
* The #ClutterStageClass structure contains only private data
*
* Since: 0.2
*/
struct _ClutterStageClass
{
/*< private >*/
ClutterActorClass parent_class;
/*< public >*/
/* signals */
void (* activate) (ClutterStage *stage);
void (* deactivate) (ClutterStage *stage);
void (* before_paint) (ClutterStage *stage,
ClutterStageView *view);
void (* paint_view) (ClutterStage *stage,
ClutterStageView *view,
const cairo_region_t *redraw_clip);
/*< private >*/
/* padding for future expansion */
gpointer _padding_dummy[31];
};
/**
* ClutterPerspective:
* @fovy: the field of view angle, in degrees, in the y direction
* @aspect: the aspect ratio that determines the field of view in the x
* direction. The aspect ratio is the ratio of x (width) to y (height)
* @z_near: the distance from the viewer to the near clipping
* plane (always positive)
* @z_far: the distance from the viewer to the far clipping
* plane (always positive)
*
* Stage perspective definition.
*
* Since: 0.4
*/
struct _ClutterPerspective
{
gfloat fovy;
gfloat aspect;
gfloat z_near;
gfloat z_far;
};
typedef enum
{
CLUTTER_FRAME_INFO_FLAG_NONE = 0,
/* presentation_time timestamp was provided by the hardware */
CLUTTER_FRAME_INFO_FLAG_HW_CLOCK = 1 << 0,
/*
* The presentation of this frame was done zero-copy. This means the buffer
* from the client was given to display hardware as is, without copying it.
* Compositing with OpenGL counts as copying, even if textured directly from
* the client buffer. Possible zero-copy cases include direct scanout of a
* fullscreen surface and a surface on a hardware overlay.
*/
CLUTTER_FRAME_INFO_FLAG_ZERO_COPY = 1 << 1,
/*
* The presentation was synchronized to the "vertical retrace" by the display
* hardware such that tearing does not happen. Relying on user space
* scheduling is not acceptable for this flag. If presentation is done by a
* copy to the active frontbuffer, then it must guarantee that tearing cannot
* happen.
*/
CLUTTER_FRAME_INFO_FLAG_VSYNC = 1 << 2,
} ClutterFrameInfoFlag;
/**
* ClutterFrameInfo: (skip)
*/
struct _ClutterFrameInfo
{
int64_t frame_counter;
int64_t presentation_time; /* microseconds; CLOCK_MONOTONIC */
float refresh_rate;
ClutterFrameInfoFlag flags;
unsigned int sequence;
int64_t gpu_rendering_duration_ns;
int64_t cpu_time_before_buffer_swap_us;
};
typedef struct _ClutterCapture
{
cairo_surface_t *image;
cairo_rectangle_int_t rect;
} ClutterCapture;
CLUTTER_EXPORT
GType clutter_perspective_get_type (void) G_GNUC_CONST;
CLUTTER_EXPORT
GType clutter_stage_get_type (void) G_GNUC_CONST;
CLUTTER_EXPORT
void clutter_stage_get_perspective (ClutterStage *stage,
ClutterPerspective *perspective);
CLUTTER_EXPORT
void clutter_stage_set_title (ClutterStage *stage,
const gchar *title);
CLUTTER_EXPORT
const gchar * clutter_stage_get_title (ClutterStage *stage);
CLUTTER_EXPORT
void clutter_stage_set_minimum_size (ClutterStage *stage,
guint width,
guint height);
CLUTTER_EXPORT
void clutter_stage_get_minimum_size (ClutterStage *stage,
guint *width,
guint *height);
CLUTTER_EXPORT
void clutter_stage_set_use_alpha (ClutterStage *stage,
gboolean use_alpha);
CLUTTER_EXPORT
gboolean clutter_stage_get_use_alpha (ClutterStage *stage);
CLUTTER_EXPORT
void clutter_stage_set_key_focus (ClutterStage *stage,
ClutterActor *actor);
CLUTTER_EXPORT
ClutterActor * clutter_stage_get_key_focus (ClutterStage *stage);
CLUTTER_EXPORT
void clutter_stage_set_throttle_motion_events (ClutterStage *stage,
gboolean throttle);
CLUTTER_EXPORT
gboolean clutter_stage_get_throttle_motion_events (ClutterStage *stage);
CLUTTER_EXPORT
void clutter_stage_set_motion_events_enabled (ClutterStage *stage,
gboolean enabled);
CLUTTER_EXPORT
gboolean clutter_stage_get_motion_events_enabled (ClutterStage *stage);
CLUTTER_EXPORT
gboolean clutter_stage_event (ClutterStage *stage,
ClutterEvent *event);
CLUTTER_EXPORT
ClutterActor * clutter_stage_get_actor_at_pos (ClutterStage *stage,
ClutterPickMode pick_mode,
float x,
float y);
CLUTTER_EXPORT
guchar * clutter_stage_read_pixels (ClutterStage *stage,
gint x,
gint y,
gint width,
gint height);
CLUTTER_EXPORT
void clutter_stage_ensure_viewport (ClutterStage *stage);
CLUTTER_EXPORT
gboolean clutter_stage_is_redraw_queued_on_view (ClutterStage *stage,
ClutterStageView *view);
CLUTTER_EXPORT
void clutter_stage_schedule_update (ClutterStage *stage);
CLUTTER_EXPORT
gboolean clutter_stage_get_capture_final_size (ClutterStage *stage,
cairo_rectangle_int_t *rect,
int *out_width,
int *out_height,
float *out_scale);
CLUTTER_EXPORT
void clutter_stage_paint_to_framebuffer (ClutterStage *stage,
CoglFramebuffer *framebuffer,
const cairo_rectangle_int_t *rect,
float scale,
ClutterPaintFlag paint_flags);
CLUTTER_EXPORT
gboolean clutter_stage_paint_to_buffer (ClutterStage *stage,
const cairo_rectangle_int_t *rect,
float scale,
uint8_t *data,
int stride,
CoglPixelFormat format,
ClutterPaintFlag paint_flags,
GError **error);
CLUTTER_EXPORT
ClutterStageView * clutter_stage_get_view_at (ClutterStage *stage,
float x,
float y);
CLUTTER_EXPORT
ClutterActor * clutter_stage_get_device_actor (ClutterStage *stage,
ClutterInputDevice *device,
ClutterEventSequence *sequence);
G_END_DECLS
#endif /* __CLUTTER_STAGE_H__ */
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