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