/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2010 Intel Corporation.
*
* 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_ACTOR_PRIVATE_H__
#define __CLUTTER_ACTOR_PRIVATE_H__
#include <clutter/clutter-actor.h>
G_BEGIN_DECLS
/*< private >
* ClutterRedrawFlags:
* @CLUTTER_REDRAW_CLIPPED_TO_ALLOCATION: Tells clutter the maximum
* extents of what needs to be redrawn lies within the actors
* current allocation. (Only use this for 2D actors though because
* any actor with depth may be projected outside of its allocation)
*
* Flags passed to the clutter_actor_queue_redraw_with_clip ()
* function
*
* Since: 1.6
*/
typedef enum
{
CLUTTER_REDRAW_CLIPPED_TO_ALLOCATION = 1 << 0
} ClutterRedrawFlags;
/*< private >
* ClutterActorTraverseFlags:
* CLUTTER_ACTOR_TRAVERSE_DEPTH_FIRST: Traverse the graph in
* a depth first order.
* CLUTTER_ACTOR_TRAVERSE_BREADTH_FIRST: Traverse the graph in a
* breadth first order.
*
* Controls some options for how clutter_actor_traverse() iterates
* through the graph.
*/
typedef enum {
CLUTTER_ACTOR_TRAVERSE_DEPTH_FIRST = 1L<<0,
CLUTTER_ACTOR_TRAVERSE_BREADTH_FIRST = 1L<<1
} ClutterActorTraverseFlags;
/*< private >
* ClutterActorTraverseVisitFlags:
* CLUTTER_ACTOR_TRAVERSE_VISIT_CONTINUE: Continue traversing as
* normal
* CLUTTER_ACTOR_TRAVERSE_VISIT_SKIP_CHILDREN: Don't traverse the
* children of the last visited actor. (Not applicable when using
* %CLUTTER_ACTOR_TRAVERSE_DEPTH_FIRST_POST_ORDER since the children
* are visited before having an opportunity to bail out)
* CLUTTER_ACTOR_TRAVERSE_VISIT_BREAK: Immediately bail out without
* visiting any more actors.
*
* Each time an actor is visited during a scenegraph traversal the
* ClutterTraverseCallback can return a set of flags that may affect
* the continuing traversal. It may stop traversal completely, just
* skip over children for the current actor or continue as normal.
*/
typedef enum {
CLUTTER_ACTOR_TRAVERSE_VISIT_CONTINUE = 1L<<0,
CLUTTER_ACTOR_TRAVERSE_VISIT_SKIP_CHILDREN = 1L<<1,
CLUTTER_ACTOR_TRAVERSE_VISIT_BREAK = 1L<<2
} ClutterActorTraverseVisitFlags;
/*< private >
* ClutterTraverseCallback:
*
* The callback prototype used with clutter_actor_traverse. The
* returned flags can be used to affect the continuing traversal
* either by continuing as normal, skipping over children of an
* actor or bailing out completely.
*/
typedef ClutterActorTraverseVisitFlags (*ClutterTraverseCallback) (ClutterActor *actor,
gint depth,
gpointer user_data);
/*< private >
* ClutterForeachCallback:
* @actor: The actor being iterated
* @user_data: The private data specified when starting the iteration
*
* A generic callback for iterating over actor, such as with
* _clutter_actor_foreach_child. The difference when compared to
* #ClutterCallback is that it returns a boolean so it is possible to break
* out of an iteration early.
*
* Return value: %TRUE to continue iterating or %FALSE to break iteration
* early.
*/
typedef gboolean (*ClutterForeachCallback) (ClutterActor *actor,
gpointer user_data);
typedef struct _AnchorCoord AnchorCoord;
typedef struct _SizeRequest SizeRequest;
typedef struct _ClutterLayoutInfo ClutterLayoutInfo;
typedef struct _ClutterTransformInfo ClutterTransformInfo;
typedef struct _ClutterAnimationInfo ClutterAnimationInfo;
/* Internal helper struct to represent a point that can be stored in
either direct pixel coordinates or as a fraction of the actor's
size. It is used for the anchor point, scale center and rotation
centers. */
struct _AnchorCoord
{
gboolean is_fractional;
union
{
/* Used when is_fractional == TRUE */
struct
{
gdouble x;
gdouble y;
} fraction;
/* Use when is_fractional == FALSE */
ClutterVertex units;
} v;
};
struct _SizeRequest
{
guint age;
gfloat for_size;
gfloat min_size;
gfloat natural_size;
};
/*< private >
* ClutterLayoutInfo:
* @fixed_pos: the fixed position of the actor
* @margin: the composed margin of the actor
* @x_align: the horizontal alignment, if the actor expands horizontally
* @y_align: the vertical alignment, if the actor expands vertically
* @x_expand: whether the actor should expand horizontally
* @y_expand: whether the actor should expand vertically
* @minimum: the fixed minimum size
* @natural: the fixed natural size
*
* Ancillary layout information for an actor.
*/
struct _ClutterLayoutInfo
{
/* fixed position coordinates */
ClutterPoint fixed_pos;
ClutterMargin margin;
guint x_align : 4;
guint y_align : 4;
guint x_expand : 1;
guint y_expand : 1;
ClutterSize minimum;
ClutterSize natural;
};
const ClutterLayoutInfo * _clutter_actor_get_layout_info_or_defaults (ClutterActor *self);
ClutterLayoutInfo * _clutter_actor_get_layout_info (ClutterActor *self);
ClutterLayoutInfo * _clutter_actor_peek_layout_info (ClutterActor *self);
struct _ClutterTransformInfo
{
/* rotation (angle and center) */
gdouble rx_angle;
AnchorCoord rx_center;
gdouble ry_angle;
AnchorCoord ry_center;
gdouble rz_angle;
AnchorCoord rz_center;
/* scaling */
gdouble scale_x;
gdouble scale_y;
gdouble scale_z;
AnchorCoord scale_center;
/* anchor point */
AnchorCoord anchor;
/* translation */
ClutterVertex translation;
/* z_position */
gfloat z_position;
/* transformation center */
ClutterPoint pivot;
gfloat pivot_z;
CoglMatrix transform;
guint transform_set : 1;
CoglMatrix child_transform;
guint child_transform_set : 1;
};
const ClutterTransformInfo * _clutter_actor_get_transform_info_or_defaults (ClutterActor *self);
ClutterTransformInfo * _clutter_actor_get_transform_info (ClutterActor *self);
typedef struct _AState {
guint easing_duration;
guint easing_delay;
ClutterAnimationMode easing_mode;
} AState;
struct _ClutterAnimationInfo
{
GArray *states;
AState *cur_state;
GHashTable *transitions;
};
const ClutterAnimationInfo * _clutter_actor_get_animation_info_or_defaults (ClutterActor *self);
ClutterAnimationInfo * _clutter_actor_get_animation_info (ClutterActor *self);
ClutterTransition * _clutter_actor_create_transition (ClutterActor *self,
GParamSpec *pspec,
...);
ClutterTransition * _clutter_actor_get_transition (ClutterActor *self,
GParamSpec *pspec);
gboolean _clutter_actor_foreach_child (ClutterActor *self,
ClutterForeachCallback callback,
gpointer user_data);
void _clutter_actor_traverse (ClutterActor *actor,
ClutterActorTraverseFlags flags,
ClutterTraverseCallback before_children_callback,
ClutterTraverseCallback after_children_callback,
gpointer user_data);
ClutterActor *_clutter_actor_get_stage_internal (ClutterActor *actor);
void _clutter_actor_apply_modelview_transform (ClutterActor *self,
CoglMatrix *matrix);
void _clutter_actor_apply_relative_transformation_matrix (ClutterActor *self,
ClutterActor *ancestor,
CoglMatrix *matrix);
void _clutter_actor_rerealize (ClutterActor *self,
ClutterCallback callback,
gpointer data);
void _clutter_actor_set_opacity_override (ClutterActor *self,
gint opacity);
gint _clutter_actor_get_opacity_override (ClutterActor *self);
void _clutter_actor_set_in_clone_paint (ClutterActor *self,
gboolean is_in_clone_paint);
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_actor_set_has_pointer (ClutterActor *self,
gboolean has_pointer);
void _clutter_actor_queue_redraw_with_clip (ClutterActor *self,
ClutterRedrawFlags flags,
ClutterPaintVolume *clip_volume);
void _clutter_actor_queue_redraw_full (ClutterActor *self,
ClutterRedrawFlags flags,
ClutterPaintVolume *volume,
ClutterEffect *effect);
ClutterPaintVolume *_clutter_actor_get_queue_redraw_clip (ClutterActor *self);
void _clutter_actor_set_queue_redraw_clip (ClutterActor *self,
ClutterPaintVolume *clip_volume);
void _clutter_actor_finish_queue_redraw (ClutterActor *self,
ClutterPaintVolume *clip);
gboolean _clutter_actor_set_default_paint_volume (ClutterActor *self,
GType check_gtype,
ClutterPaintVolume *volume);
const gchar * _clutter_actor_get_debug_name (ClutterActor *self);
void _clutter_actor_push_clone_paint (void);
void _clutter_actor_pop_clone_paint (void);
guint32 _clutter_actor_get_pick_id (ClutterActor *self);
void _clutter_actor_shader_pre_paint (ClutterActor *actor,
gboolean repeat);
void _clutter_actor_shader_post_paint (ClutterActor *actor);
ClutterActorAlign _clutter_actor_get_effective_x_align (ClutterActor *self);
void _clutter_actor_handle_event (ClutterActor *actor,
const ClutterEvent *event);
G_END_DECLS
#endif /* __CLUTTER_ACTOR_PRIVATE_H__ */