#include <clutter/clutter.h>
#include <stdlib.h>

static gboolean
on_stage_keypress (ClutterStage *stage, ClutterEvent *event, gpointer data)
{
    //g_print("Key pressed: %d\n", clutter_event_get_key_code(event));
    if(clutter_event_get_key_code(event) == 66) //Escape
        clutter_main_quit();
    return TRUE;
}

static gboolean
start_stop_drag (ClutterActor *actor, ClutterEvent *event, gpointer data)
{
    gboolean *dragging = data;
    *dragging = !*dragging;
    if(*dragging)
        g_print("Arrastrando\n");
    else
        g_print("No arrastrando\n");
    return TRUE;
}

static gboolean
drag_actor (ClutterActor *actor, ClutterEvent *event, gpointer data)
{
    gfloat x=0, y=0;
    gboolean *dragging = data;
    if(*dragging) {
        clutter_event_get_coords(event, &x, &y);
        clutter_actor_set_position(actor, x, y);
    }
    return TRUE;
}

int main (int argc, char *argv[])
{
    ClutterColor stage_colour = { 0x00, 0x00, 0x00, 0xff};

    clutter_init(&argc, &argv);

    //Stage
    gfloat st_w = 640, st_h = 480;

    ClutterActor *stage = clutter_stage_get_default ();

    //clutter_stage_set_fullscreen(CLUTTER_STAGE(stage), TRUE);
    clutter_actor_set_size (stage, st_w, st_h);
    clutter_stage_set_color (CLUTTER_STAGE(stage), &stage_colour);

    clutter_actor_show (stage);

    //Salir
    gfloat icon_w = 64, icon_h = 64;
    ClutterActor *exit = clutter_texture_new_from_file ("system-log-out.svg", NULL);
    clutter_container_add_actor (CLUTTER_CONTAINER(stage), exit);
    clutter_actor_set_anchor_point (exit, icon_w, 0);
    clutter_actor_set_position (exit, CLUTTER_STAGE_WIDTH(), 0.0);
    clutter_actor_set_size (exit, icon_w, icon_h);
    clutter_actor_set_reactive (exit, TRUE);
    clutter_actor_show (exit);

    //Carita
    ClutterActor *omg = clutter_texture_new_from_file("face-surprise.svg", NULL);
    clutter_container_add_actor (CLUTTER_CONTAINER(stage), omg);
    clutter_actor_set_size (omg, icon_w, icon_h);
    clutter_actor_set_anchor_point (omg, icon_w/2, icon_h/2);
    clutter_actor_set_position (omg, CLUTTER_STAGE_WIDTH()/2, CLUTTER_STAGE_HEIGHT()/2);
    clutter_actor_set_reactive (omg, TRUE);
    clutter_actor_show(omg);

    gboolean omg_dragging = FALSE;

    //Señales!
    g_signal_connect (exit, "button-press-event",
            G_CALLBACK (clutter_main_quit), NULL);
    g_signal_connect (stage, "key-press-event",
            G_CALLBACK (on_stage_keypress), NULL);
    g_signal_connect (omg, "button-press-event",
            G_CALLBACK(start_stop_drag), &omg_dragging);
    g_signal_connect (omg, "button-release-event",
            G_CALLBACK(start_stop_drag), &omg_dragging);
    g_signal_connect (omg, "motion-event",
            G_CALLBACK(drag_actor), &omg_dragging);

    g_print("Default FPSs: %d\n", clutter_get_default_frame_rate());

    clutter_main();

    return EXIT_SUCCESS;
}