mutter/clutter/examples/basic-actor.c
2016-04-12 20:04:26 +02:00

154 lines
4.9 KiB
C

#include <stdlib.h>
#include <clutter/clutter.h>
#define SIZE 128
static gboolean
animate_color (ClutterActor *actor,
ClutterEvent *event)
{
static gboolean toggled = TRUE;
const ClutterColor *end_color;
if (toggled)
end_color = CLUTTER_COLOR_Blue;
else
end_color = CLUTTER_COLOR_Red;
clutter_actor_save_easing_state (actor);
clutter_actor_set_easing_duration (actor, 500);
clutter_actor_set_easing_mode (actor, CLUTTER_LINEAR);
clutter_actor_set_background_color (actor, end_color);
clutter_actor_restore_easing_state (actor);
toggled = !toggled;
return CLUTTER_EVENT_STOP;
}
static gboolean
on_crossing (ClutterActor *actor,
ClutterEvent *event)
{
gboolean is_enter = clutter_event_type (event) == CLUTTER_ENTER;
float zpos;
if (is_enter)
zpos = -250.0;
else
zpos = 0.0;
clutter_actor_save_easing_state (actor);
clutter_actor_set_easing_duration (actor, 500);
clutter_actor_set_easing_mode (actor, CLUTTER_EASE_OUT_BOUNCE);
clutter_actor_set_z_position (actor, zpos);
clutter_actor_restore_easing_state (actor);
return CLUTTER_EVENT_STOP;
}
static void
on_transition_stopped (ClutterActor *actor,
const gchar *transition_name,
gboolean is_finished)
{
clutter_actor_save_easing_state (actor);
clutter_actor_set_rotation_angle (actor, CLUTTER_Y_AXIS, 0.0f);
clutter_actor_restore_easing_state (actor);
/* disconnect so we don't get multiple notifications */
g_signal_handlers_disconnect_by_func (actor,
on_transition_stopped,
NULL);
}
static gboolean
animate_rotation (ClutterActor *actor,
ClutterEvent *event)
{
clutter_actor_save_easing_state (actor);
clutter_actor_set_easing_duration (actor, 1000);
clutter_actor_set_rotation_angle (actor, CLUTTER_Y_AXIS, 360.0);
clutter_actor_restore_easing_state (actor);
/* get a notification when the rotation-angle-y transition ends */
g_signal_connect (actor,
"transition-stopped::rotation-angle-y",
G_CALLBACK (on_transition_stopped),
NULL);
return CLUTTER_EVENT_STOP;
}
int
main (int argc, char *argv[])
{
ClutterActor *stage, *vase;
ClutterActor *flowers[3];
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return EXIT_FAILURE;
stage = clutter_stage_new ();
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Three Flowers in a Vase");
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
/* there are three flowers in a vase */
vase = clutter_actor_new ();
clutter_actor_set_name (vase, "vase");
clutter_actor_set_layout_manager (vase, clutter_box_layout_new ());
clutter_actor_set_background_color (vase, CLUTTER_COLOR_LightSkyBlue);
clutter_actor_add_constraint (vase, clutter_align_constraint_new (stage, CLUTTER_ALIGN_BOTH, 0.5));
clutter_actor_add_child (stage, vase);
flowers[0] = clutter_actor_new ();
clutter_actor_set_name (flowers[0], "flower.1");
clutter_actor_set_size (flowers[0], SIZE, SIZE);
clutter_actor_set_margin_left (flowers[0], 12);
clutter_actor_set_background_color (flowers[0], CLUTTER_COLOR_Red);
clutter_actor_set_reactive (flowers[0], TRUE);
clutter_actor_add_child (vase, flowers[0]);
g_signal_connect (flowers[0], "button-press-event",
G_CALLBACK (animate_color),
NULL);
flowers[1] = clutter_actor_new ();
clutter_actor_set_name (flowers[1], "flower.2");
clutter_actor_set_size (flowers[1], SIZE, SIZE);
clutter_actor_set_margin_top (flowers[1], 12);
clutter_actor_set_margin_left (flowers[1], 6);
clutter_actor_set_margin_right (flowers[1], 6);
clutter_actor_set_margin_bottom (flowers[1], 12);
clutter_actor_set_background_color (flowers[1], CLUTTER_COLOR_Yellow);
clutter_actor_set_reactive (flowers[1], TRUE);
clutter_actor_add_child (vase, flowers[1]);
g_signal_connect (flowers[1], "enter-event",
G_CALLBACK (on_crossing),
NULL);
g_signal_connect (flowers[1], "leave-event",
G_CALLBACK (on_crossing),
NULL);
/* the third one is green */
flowers[2] = clutter_actor_new ();
clutter_actor_set_name (flowers[2], "flower.3");
clutter_actor_set_size (flowers[2], SIZE, SIZE);
clutter_actor_set_margin_right (flowers[2], 12);
clutter_actor_set_background_color (flowers[2], CLUTTER_COLOR_Green);
clutter_actor_set_pivot_point (flowers[2], 0.5f, 0.0f);
clutter_actor_set_reactive (flowers[2], TRUE);
clutter_actor_add_child (vase, flowers[2]);
g_signal_connect (flowers[2], "button-press-event",
G_CALLBACK (animate_rotation),
NULL);
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}