mutter/doc/cookbook/examples/animations-moving-animator.c
Elliot Smith f9d2310b72 cookbook: Make example code C90 compliant
Modified all cookbook example code to prevent ISO C90 compliance
warnings occurring during compilation.
2010-11-12 10:18:31 +00:00

124 lines
3.4 KiB
C

#include <stdlib.h>
#include <clutter/clutter.h>
typedef struct
{
ClutterActor *stage;
ClutterActor *group;
ClutterAnimator *animator;
} State;
static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
static const ClutterColor red_color = { 0xff, 0x00, 0x00, 0xff };
static const ClutterColor green_color = { 0x00, 0xff, 0x00, 0xff };
static const ClutterColor blue_color = { 0x00, 0x00, 0xff, 0xff };
/* add keys to the animator such that the actor is moved
* to a random x position
*/
static void
add_keys_for_actor (ClutterActor *actor,
gpointer user_data)
{
ClutterAnimator *animator = CLUTTER_ANIMATOR (user_data);
gfloat x, end_x;
x = clutter_actor_get_x (actor);
end_x = 50.0;
if (x == 50.0)
end_x = 225.0 + (100.0 * rand () / (RAND_MAX + 1.0));
clutter_animator_set (animator,
actor, "x", CLUTTER_LINEAR, 0.0, x,
actor, "x", CLUTTER_EASE_OUT_CUBIC, 1.0, end_x,
NULL);
}
static gboolean
move_actors (ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
State *state = (State *) user_data;
/* 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 */
clutter_container_foreach (CLUTTER_CONTAINER (state->group),
add_keys_for_actor,
state->animator);
/* start the animation */
clutter_animator_start (state->animator);
return TRUE;
}
int
main (int argc,
char *argv[])
{
ClutterActor *red;
ClutterActor *green;
ClutterActor *blue;
State *state = g_new0 (State, 1);
/* seed random number generator */
srand ((unsigned int) time (NULL));
clutter_init (&argc, &argv);
state->animator = clutter_animator_new ();
clutter_animator_set_duration (state->animator, 500);
state->stage = clutter_stage_get_default ();
clutter_actor_set_size (state->stage, 400, 350);
clutter_stage_set_color (CLUTTER_STAGE (state->stage), &stage_color);
g_signal_connect (state->stage,
"destroy",
G_CALLBACK (clutter_main_quit),
NULL);
state->group = clutter_group_new ();
red = clutter_rectangle_new_with_color (&red_color);
clutter_actor_set_size (red, 50, 50);
clutter_actor_set_position (red, 50, 50);
green = clutter_rectangle_new_with_color (&green_color);
clutter_actor_set_size (green, 50, 50);
clutter_actor_set_position (green, 50, 150);
blue = clutter_rectangle_new_with_color (&blue_color);
clutter_actor_set_size (blue, 50, 50);
clutter_actor_set_position (blue, 50, 250);
g_signal_connect (state->stage,
"key-press-event",
G_CALLBACK (move_actors),
state);
clutter_container_add (CLUTTER_CONTAINER (state->group),
red,
green,
blue,
NULL);
clutter_container_add_actor (CLUTTER_CONTAINER (state->stage), state->group);
clutter_actor_show (state->stage);
clutter_main ();
g_object_unref (state->animator);
g_free (state);
return EXIT_SUCCESS;
}