static void
mex_shell_paint (ClutterActor *actor)
{
GList *c;
MexShellPrivate *priv = MEX_SHELL (actor)->priv;
CLUTTER_ACTOR_CLASS (mex_shell_parent_class)->paint (actor);
for (c = priv->children; c; c = c->next)
{
gboolean do_paint;
MexShellChildData *data = c->data;
if (data->child == priv->presented)
do_paint = TRUE;
else if (data->start_animator)
do_paint = TRUE;
else if (clutter_timeline_is_playing (
clutter_animator_get_timeline (data->animator)))
do_paint = TRUE;
else
do_paint = FALSE;
if (do_paint)
clutter_actor_paint (((MexShellChildData *)c->data)->child);
if (data->start_animator)
{
clutter_animator_start (data->animator);
data->start_animator = FALSE;
}
}
}
static gboolean
move_actors (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
State *state = user_data;
ClutterActor *child;
/* do nothing if the animator is already running */
if (clutter_timeline_is_playing (clutter_animator_get_timeline (state->animator)))
return TRUE;
/* remove all keys from the animator */
clutter_animator_remove_key (state->animator, NULL, NULL, -1);
/* add keys for all actors in the group */
for (child = clutter_actor_get_first_child (state->group);
child != NULL;
child = clutter_actor_get_next_sibling (child))
{
add_keys_for_actor (child, state->animator);
}
/* start the animation */
clutter_animator_start (state->animator);
return TRUE;
}
static void
mex_shell_child_data_free (MexShell *self, MexShellChildData *data)
{
ClutterTimeline *timeline = clutter_animator_get_timeline (data->animator);
if (clutter_timeline_is_playing (timeline))
mex_shell_timeline_completed_cb (timeline, self);
clutter_animator_remove_key (data->animator, NULL, NULL, -1);
g_object_unref (data->animator);
g_slice_free (MexShellChildData, data);
}
/*
* start the animation when a key is pressed;
* see the signals recipe in the Script chapter for more details
*/
gboolean
foo_key_pressed_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
ClutterScript *script = CLUTTER_SCRIPT (user_data);
ClutterAnimator *animator;
clutter_script_get_objects (script,
"animator", &animator,
NULL);
if (clutter_timeline_is_playing (clutter_animator_get_timeline (animator)))
return FALSE;
clutter_animator_start (animator);
return TRUE;
}
static MexShellChildData *
mex_shell_child_data_new (MexShell *self, ClutterActor *child)
{
ClutterTimeline *timeline;
MexShellChildData *data = g_slice_new0 (MexShellChildData);
data->child = child;
data->animator = clutter_animator_new ();
data->last_direction = MEX_SHELL_DIRECTION_RIGHT;
clutter_animator_set_duration (data->animator, 250);
timeline = clutter_animator_get_timeline (data->animator);
g_signal_connect (timeline, "started",
G_CALLBACK (mex_shell_timeline_started_cb), self);
g_signal_connect (timeline, "completed",
G_CALLBACK (mex_shell_timeline_completed_cb), self);
return data;
}
int
main (int argc,
char *argv[])
{
State *state = g_new0 (State, 1);
ClutterActor *stage;
ClutterAnimator *animator;
clutter_init (&argc, &argv);
stage = clutter_stage_new ();
clutter_actor_set_size (stage, 400, 400);
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
state->red = clutter_rectangle_new_with_color (&red_color);
clutter_actor_set_size (state->red, 100, 100);
clutter_actor_set_position (state->red, 300, 300);
state->green = clutter_rectangle_new_with_color (&green_color);
clutter_actor_set_size (state->green, 100, 100);
clutter_actor_set_position (state->green, 0, 0);
animator = clutter_animator_new ();
clutter_animator_set_duration (animator, 1000);
clutter_animator_set (animator,
state->red, "x", CLUTTER_LINEAR, 0.0, 300.0,
state->red, "y", CLUTTER_LINEAR, 0.0, 300.0,
state->red, "x", CLUTTER_LINEAR, 1.0, 0.0,
state->red, "y", CLUTTER_EASE_IN_QUINT, 1.0, 0.0,
NULL);
clutter_animator_set (animator,
state->green, "x", CLUTTER_LINEAR, 0.0, 0.0,
state->green, "y", CLUTTER_LINEAR, 0.0, 0.0,
state->green, "x", CLUTTER_LINEAR, 1.0, 300.0,
state->green, "y", CLUTTER_EASE_IN_QUINT, 1.0, 300.0,
NULL);
state->timeline = clutter_animator_get_timeline (animator);
clutter_timeline_set_auto_reverse (state->timeline, TRUE);
g_signal_connect (stage,
"key-press-event",
G_CALLBACK (key_pressed_cb),
state);
clutter_container_add (CLUTTER_CONTAINER (stage), state->red, state->green, NULL);
clutter_actor_show (stage);
clutter_main ();
g_object_unref (animator);
g_free (state);
return EXIT_SUCCESS;
}