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#include <stdlib.h>
#include <gmodule.h>
#include <clutter/clutter.h>
static const ClutterColor colors[] = {
{ 255, 0, 0, 255 },
{ 0, 255, 0, 255 },
{ 0, 0, 255, 255 },
};
#define PADDING (64.0f)
#define SIZE (64.0f)
static void
on_transition_stopped (ClutterActor *actor,
const gchar *transition_name,
gboolean is_finished)
{
g_print ("%s: transition stopped: %s (finished: %s)\n",
clutter_actor_get_name (actor),
transition_name,
is_finished ? "yes" : "no");
}
G_MODULE_EXPORT const char *
test_keyframe_transition_describe (void)
{
return "Demonstrate the keyframe transition.";
}
G_MODULE_EXPORT int
test_keyframe_transition_main (int argc, char *argv[])
{
ClutterActor *stage;
int i;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return EXIT_FAILURE;
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Keyframe Transitions");
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
for (i = 0; i < 3; i++)
{
ClutterTransition *transition, *group;
ClutterActor *rect;
float cur_x, cur_y;
float new_x, new_y;
gchar *name;
cur_x = PADDING;
cur_y = PADDING + ((SIZE + PADDING) * i);
new_x = clutter_actor_get_width (stage) - PADDING - SIZE;
new_y = g_random_double_range (PADDING, clutter_actor_get_height (stage) - PADDING - SIZE);
name = g_strdup_printf ("rect%02d", i);
rect = clutter_actor_new ();
clutter_actor_set_name (rect, name);
clutter_actor_set_background_color (rect, &colors[i]);
clutter_actor_set_size (rect, SIZE, SIZE);
clutter_actor_set_position (rect, PADDING, cur_y);
clutter_actor_add_child (stage, rect);
group = clutter_transition_group_new ();
clutter_timeline_set_duration (CLUTTER_TIMELINE (group), 2000);
clutter_timeline_set_repeat_count (CLUTTER_TIMELINE (group), 1);
clutter_timeline_set_auto_reverse (CLUTTER_TIMELINE (group), TRUE);
transition = clutter_keyframe_transition_new ("x");
clutter_transition_set_from (transition, G_TYPE_FLOAT, cur_x);
clutter_transition_set_to (transition, G_TYPE_FLOAT, new_x);
clutter_keyframe_transition_set (CLUTTER_KEYFRAME_TRANSITION (transition),
G_TYPE_FLOAT, 1,
0.5, new_x / 2.0f, CLUTTER_EASE_OUT_EXPO);
clutter_transition_group_add_transition (CLUTTER_TRANSITION_GROUP (group), transition);
g_object_unref (transition);
transition = clutter_keyframe_transition_new ("y");
clutter_transition_set_from (transition, G_TYPE_FLOAT, cur_y);
clutter_transition_set_to (transition, G_TYPE_FLOAT, cur_y);
clutter_keyframe_transition_set (CLUTTER_KEYFRAME_TRANSITION (transition),
G_TYPE_FLOAT, 1,
0.5, new_y, CLUTTER_EASE_OUT_EXPO);
clutter_transition_group_add_transition (CLUTTER_TRANSITION_GROUP (group), transition);
g_object_unref (transition);
clutter_actor_add_transition (rect, "rectAnimation", group);
g_signal_connect (rect, "transition-stopped",
G_CALLBACK (on_transition_stopped),
NULL);
g_object_unref (group);
g_free (name);
}
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}
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