#include #include #include static const ClutterColor colors[] = { { 255, 0, 0, 255 }, { 0, 255, 0, 255 }, { 0, 0, 255, 255 }, }; #define PADDING (64.0f) #define SIZE (64.0f) 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; 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); rect = clutter_actor_new (); 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); clutter_actor_save_easing_state (rect); clutter_actor_set_easing_duration (rect, 2000); clutter_actor_set_easing_mode (rect, CLUTTER_LINEAR); group = clutter_transition_group_new (); 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_object_unref (group); clutter_actor_restore_easing_state (rect); } clutter_actor_show (stage); clutter_main (); return EXIT_SUCCESS; }