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state: documented data structures

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This commit is contained in:
Øyvind Kolås 2010-05-20 23:05:16 +01:00
parent 84f165b460
commit 9c4467707f
1 changed files with 45 additions and 39 deletions
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84
clutter/clutter-state.c
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@ -48,33 +48,37 @@
G_DEFINE_TYPE (ClutterState, clutter_state, G_TYPE_OBJECT); G_DEFINE_TYPE (ClutterState, clutter_state, G_TYPE_OBJECT);
typedef struct StateAnimator { typedef struct StateAnimator {
const gchar *source_state_name; const gchar *source_state_name; /* interned string identifying entry */
ClutterAnimator *animator; ClutterAnimator *animator; /* pointer to animator itself */
} StateAnimator; } StateAnimator;
typedef struct State { typedef struct State
ClutterState *state; {
const gchar *name; const gchar *name; /* interned string for this state name */
GHashTable *durations; /* contains state objects */ GHashTable *durations; /* durations for transitions from various state
GList *keys; /* list of all keys pertaining to transitions names */
from other states to this one */ GList *keys; /* list of all keys pertaining to transitions
GArray *animators; /* list of animators for transitioning from from other states to this one */
* specific source states GArray *animators; /* list of animators for transitioning from
*/ * specific source states */
ClutterState *clutter_state; /* the ClutterState object this state belongs to
*/
} State; } State;
struct _ClutterStatePrivate struct _ClutterStatePrivate
{ {
ClutterTimeline *timeline; GHashTable *states; /* contains state objects */
ClutterTimeline *slave_timeline; guint duration; /* global fallback duration */
const gchar *source_state_name; ClutterTimeline *timeline; /* The timeline used for doing the
const gchar *target_state_name; progress */
State *source_state; ClutterTimeline *slave_timeline; /* a slave timeline used to compute
State *target_state; alphas */
GHashTable *states; /* contains state objects */ const gchar *source_state_name; /* current source state */
State *source_state; /* current source_state */
ClutterAnimator *current_animator; const gchar *target_state_name; /* current target state */
guint duration; /* global fallback duration */ State *target_state; /* target state name */
ClutterAnimator *current_animator; /* !NULL if the current transition is
overriden by an animator */
}; };
#define SLAVE_TIMELINE_LENGTH 10000 #define SLAVE_TIMELINE_LENGTH 10000
@ -87,22 +91,24 @@ struct _ClutterStatePrivate
*/ */
typedef struct _ClutterStateKey typedef struct _ClutterStateKey
{ {
GObject *object; GObject *object; /* an Gobject */
const gchar *property_name; const gchar *property_name;/* the name of a property */
gulong mode; gulong mode; /* alpha to use */
GValue value; GValue value; /* target value */
gdouble pre_delay; gdouble pre_delay; /* fraction of duration to delay before
gdouble post_delay; starting */
gdouble post_delay; /* fraction of duration to be done in */
State *source_state; State *source_state; /* source state */
State *target_state; State *target_state; /* target state */
ClutterAlpha *alpha;
ClutterInterval *interval;
ClutterState *state; ClutterAlpha *alpha; /* The alpha this key uses for interpolation */
ClutterInterval *interval; /* The interval this key uses for
interpolation */
guint is_inert : 1; guint is_inert : 1; /* set if the key is being destroyed due to
gint ref_count; weak reference */
gint ref_count; /* reference count for boxed life time */
} _ClutterStateKey; } _ClutterStateKey;
enum enum
@ -174,7 +180,7 @@ clutter_state_key_new (State *state,
g_object_ref_sink (state_key->alpha); g_object_ref_sink (state_key->alpha);
clutter_alpha_set_mode (state_key->alpha, mode); clutter_alpha_set_mode (state_key->alpha, mode);
clutter_alpha_set_timeline (state_key->alpha, clutter_alpha_set_timeline (state_key->alpha,
state->state->priv->slave_timeline); state->clutter_state->priv->slave_timeline);
state_key->interval = state_key->interval =
g_object_new (CLUTTER_TYPE_INTERVAL, g_object_new (CLUTTER_TYPE_INTERVAL,
@ -188,7 +194,7 @@ clutter_state_key_new (State *state,
g_value_unset (&value); g_value_unset (&value);
g_object_weak_ref (object, object_disappeared, g_object_weak_ref (object, object_disappeared,
state_key->target_state->state); state_key->target_state->clutter_state);
return state_key; return state_key;
} }
@ -208,7 +214,7 @@ clutter_state_key_free (gpointer clutter_state_key)
if (!key->is_inert) if (!key->is_inert)
g_object_weak_unref (key->object, object_disappeared, g_object_weak_unref (key->object, object_disappeared,
key->target_state->state); key->target_state->clutter_state);
g_object_unref (key->alpha); g_object_unref (key->alpha);
g_object_unref (key->interval); g_object_unref (key->interval);
@ -298,13 +304,13 @@ state_free (gpointer data)
} }
static State * static State *
state_new (ClutterState *this, state_new (ClutterState *clutter_state,
const gchar *name) const gchar *name)
{ {
State *state; State *state;
state = g_new0 (State, 1); state = g_new0 (State, 1);
state->state = this; state->clutter_state = clutter_state;
state->name = name; state->name = name;
state->animators = g_array_new (TRUE, TRUE, sizeof (StateAnimator)); state->animators = g_array_new (TRUE, TRUE, sizeof (StateAnimator));
state->durations = g_hash_table_new (g_direct_hash, g_direct_equal); state->durations = g_hash_table_new (g_direct_hash, g_direct_equal);