static void
clutter_behaviour_ellipse_alpha_notify (ClutterBehaviour *behave,
gdouble alpha)
{
ClutterBehaviourEllipse *self = CLUTTER_BEHAVIOUR_ELLIPSE (behave);
ClutterBehaviourEllipsePrivate *priv = self->priv;
gfloat start, end;
gfloat angle = 0;
knot3d knot;
/* we do everything in single precision because it's easier, even
* though all the parameters are stored in double precision for
* consistency with the equivalent ClutterActor API
*/
start = priv->angle_start;
end = priv->angle_end;
if (priv->direction == CLUTTER_ROTATE_CW && start >= end)
end += 360;
else if (priv->direction == CLUTTER_ROTATE_CCW && start <= end)
end -= 360;
angle = (end - start) * alpha + start;
clutter_behaviour_ellipse_advance (self, angle, &knot);
knot.x += priv->center.x;
knot.y += priv->center.y;
clutter_behaviour_actors_foreach (behave, actor_apply_knot_foreach, &knot);
}
static void
clutter_behaviour_ellipse_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterBehaviourEllipse *el = CLUTTER_BEHAVIOUR_ELLIPSE (gobject);
ClutterBehaviourEllipsePrivate *priv = el->priv;
switch (prop_id)
{
case PROP_ANGLE_START:
priv->angle_start = g_value_get_double (value);
break;
case PROP_ANGLE_END:
priv->angle_end = g_value_get_double (value);
break;
case PROP_ANGLE_TILT_X:
priv->angle_tilt_x = g_value_get_double (value);
break;
case PROP_ANGLE_TILT_Y:
priv->angle_tilt_y = g_value_get_double (value);
break;
case PROP_ANGLE_TILT_Z:
priv->angle_tilt_z = g_value_get_double (value);
break;
case PROP_WIDTH:
clutter_behaviour_ellipse_set_width (el, g_value_get_int (value));
break;
case PROP_HEIGHT:
clutter_behaviour_ellipse_set_height (el, g_value_get_int (value));
break;
case PROP_CENTER:
{
ClutterKnot *knot = g_value_get_boxed (value);
if (knot)
clutter_behaviour_ellipse_set_center (el, knot->x, knot->y);
}
break;
case PROP_DIRECTION:
priv->direction = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_behaviour_ellipse_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterBehaviourEllipsePrivate *priv;
priv = CLUTTER_BEHAVIOUR_ELLIPSE (gobject)->priv;
switch (prop_id)
{
case PROP_ANGLE_START:
g_value_set_double (value, priv->angle_start);
break;
case PROP_ANGLE_END:
g_value_set_double (value, priv->angle_end);
break;
case PROP_ANGLE_TILT_X:
g_value_set_double (value, priv->angle_tilt_x);
break;
case PROP_ANGLE_TILT_Y:
g_value_set_double (value, priv->angle_tilt_y);
break;
case PROP_ANGLE_TILT_Z:
g_value_set_double (value, priv->angle_tilt_z);
break;
case PROP_WIDTH:
g_value_set_int (value, (priv->a * 2));
break;
case PROP_HEIGHT:
g_value_set_int (value, (priv->b * 2));
break;
case PROP_CENTER:
g_value_set_boxed (value, &priv->center);
break;
case PROP_DIRECTION:
g_value_set_enum (value, priv->direction);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
void
introduce_items (App *app)
{
gint i;
GSList *node;
gdouble ang_start, ang_end;
node = app->items;
for (i=0; i<N_ITEMS; i++)
{
Item *item = node->data;
ang_start = -90.0;
ang_end = (STEP * i);
clutter_behaviour_ellipse_set_angle_start
(CLUTTER_BEHAVIOUR_ELLIPSE(item->ellipse_behave), ang_start);
clutter_behaviour_ellipse_set_angle_end
(CLUTTER_BEHAVIOUR_ELLIPSE(item->ellipse_behave), ang_end);
if (i == app->selected_index)
{
g_object_set (item->opacity_behave,
"opacity-start", 0x66,
"opacity-end", 0xff,
NULL);
g_object_set (item->scale_behave,
"x-scale-start", 0.6,
"y-scale-start", 0.6,
"x-scale-end", 1.0,
"y-scale-end", 1.0,
NULL);
}
node = node->next;
}
clutter_timeline_start (app->timeline);
}
static void
clutter_behaviour_ellipse_applied (ClutterBehaviour *behave,
ClutterActor *actor)
{
ClutterBehaviourEllipse *e = CLUTTER_BEHAVIOUR_ELLIPSE (behave);
ClutterBehaviourEllipsePrivate *priv = e->priv;
knot3d knot = { 0, };
clutter_behaviour_ellipse_advance (e, priv->angle_start, &knot);
clutter_actor_set_position (actor, knot.x, knot.y);
/* the depth should be changed only if there is a tilt on
* any of the X or the Y axis
*/
if (priv->angle_tilt_x != 0 || priv->angle_tilt_y != 0)
clutter_actor_set_depth (actor, knot.z);
}
void
rotate_items (App *app, int step)
{
gint i, from_index;
GSList *node;
gdouble ang = 0.0, ang_start, ang_end;
from_index = app->selected_index;
app->selected_index += (-1 * step);
if (app->selected_index < 0) app->selected_index = 7;
if (app->selected_index > 7) app->selected_index = 0;
ang = app->off;
node = app->items;
for (i=0; i<N_ITEMS; i++)
{
Item *item = node->data;
ang_start = ang;
ang_end = ang + (STEP * step);
clutter_behaviour_ellipse_set_direction
(CLUTTER_BEHAVIOUR_ELLIPSE(item->ellipse_behave),
step > 0 ? CLUTTER_ROTATE_CW : CLUTTER_ROTATE_CCW);
clutter_behaviour_ellipse_set_angle_start
(CLUTTER_BEHAVIOUR_ELLIPSE(item->ellipse_behave), ang_start);
clutter_behaviour_ellipse_set_angle_end
(CLUTTER_BEHAVIOUR_ELLIPSE(item->ellipse_behave), ang_end);
if (i == from_index)
{
g_object_set (item->opacity_behave,
"opacity-start", 0xff,
"opacity-end", 0x66,
NULL);
g_object_set (item->scale_behave,
"x-scale-start", 1.0,
"y-scale-start", 1.0,
"x-scale-end", 0.6,
"y-scale-end", 0.6,
NULL);
}
else if (i == app->selected_index)
{
g_object_set (item->opacity_behave,
"opacity-start", 0x66,
"opacity-end", 0xff,
NULL);
g_object_set (item->scale_behave,
"x-scale-start", 0.6,
"y-scale-start", 0.6,
"x-scale-end", 1.0,
"y-scale-end", 1.0,
NULL);
}
else
{
g_object_set (item->opacity_behave,
"opacity-start", 0x66,
"opacity-end", 0x66,
NULL);
g_object_set (item->scale_behave,
"x-scale-start", 0.6,
"y-scale-start", 0.6,
"x-scale-end", 0.6,
"y-scale-end", 0.6,
NULL);
}
ang += STEP;
node = node->next;
}
clutter_timeline_start (app->timeline);
app->off += (STEP * step);
app->off = CLAMP_ANG(app->off);
}
G_MODULE_EXPORT int
test_behave_main (int argc, char *argv[])
{
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *o_behave, *p_behave;
ClutterActor *stage;
ClutterActor *group, *rect, *hand;
ClutterColor stage_color = { 0xcc, 0xcc, 0xcc, 0xff };
ClutterColor rect_bg_color = { 0x33, 0x22, 0x22, 0xff };
ClutterColor rect_border_color = { 0, 0, 0, 0 };
int i;
path_t path_type = PATH_POLY;
const char *knots_poly = ("M 0, 0 L 0, 300 L 300, 300 "
"L 300, 0 L 0, 0");
/* A spiral created with inkscake */
const char *knots_bspline =
"M 34.285713,35.219326 "
"C 44.026891,43.384723 28.084874,52.378758 20.714286,51.409804 "
"C 0.7404474,48.783999 -4.6171866,23.967448 1.904757,8.0764719 "
"C 13.570984,-20.348756 49.798303,-26.746504 74.999994,-13.352108 "
"C 111.98449,6.3047056 119.56591,55.259271 99.047626,89.505034 "
"C 71.699974,135.14925 9.6251774,143.91924 -33.571422,116.17172 "
"C -87.929934,81.254291 -97.88804,5.8941057 -62.857155,-46.209236 "
"C -20.430061,-109.31336 68.300385,-120.45954 129.2857,-78.114021 "
"C 201.15479,-28.21129 213.48932,73.938876 163.80954,143.79074 "
"C 106.45226,224.43749 -9.1490153,237.96076 -87.85713,180.93363 "
"C -177.29029,116.13577 -192.00272,-12.937817 -127.61907,-100.49494 "
"C -55.390344,-198.72081 87.170553,-214.62275 183.57141,-142.87593 "
"C 290.59464,-63.223369 307.68641,92.835839 228.57145,198.07645";
for (i = 0; i < argc; ++i)
{
if (!strncmp (argv[i], "--path", 6))
{
if (!strncmp (argv[i] + 7, "poly", 4))
path_type = PATH_POLY;
else if (!strncmp (argv[i] + 7, "bspline", 7))
path_type = PATH_BSPLINE;
else if (!strncmp (argv[i] + 7, "ellipse", 7))
path_type = PATH_ELLIPSE;
}
else if (!strncmp (argv[i], "--help", 6))
{
printf ("behave [--path=poly|ellipse|bspline]\n");
exit (0);
}
}
clutter_init (&argc, &argv);
stage = clutter_stage_get_default ();
clutter_stage_hide_cursor (CLUTTER_STAGE (stage));
g_signal_connect (stage, "button-press-event",
G_CALLBACK (button_press_cb),
NULL);
g_signal_connect (stage, "scroll-event",
G_CALLBACK (scroll_event_cb),
NULL);
g_signal_connect (stage, "key-press-event",
G_CALLBACK (clutter_main_quit),
NULL);
clutter_stage_set_color (CLUTTER_STAGE (stage),
&stage_color);
/* Make a hand */
group = clutter_group_new ();
clutter_container_add_actor (CLUTTER_CONTAINER (stage), group);
clutter_actor_show (group);
hand = clutter_texture_new_from_file ("redhand.png", NULL);
if (hand == NULL)
{
g_error("pixbuf load failed");
return 1;
}
clutter_actor_set_position (hand, 0, 0);
clutter_actor_show (hand);
rect = clutter_rectangle_new ();
clutter_actor_set_position (rect, 0, 0);
clutter_actor_set_size (rect,
clutter_actor_get_width (hand),
clutter_actor_get_height (hand));
clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect),
&rect_bg_color);
clutter_rectangle_set_border_width (CLUTTER_RECTANGLE (rect), 10);
clutter_color_from_string (&rect_border_color, "DarkSlateGray");
clutter_rectangle_set_border_color (CLUTTER_RECTANGLE (rect),
&rect_border_color);
clutter_actor_show (rect);
clutter_container_add (CLUTTER_CONTAINER (group), rect, hand, NULL);
/* Make a timeline */
timeline = clutter_timeline_new (4000); /* num frames, fps */
clutter_timeline_set_loop (timeline, TRUE);
g_signal_connect (timeline,
"completed", G_CALLBACK (timeline_completed),
NULL);
/* Set an alpha func to power behaviour - ramp is constant rise */
alpha = clutter_alpha_new_full (timeline, CLUTTER_LINEAR);
/* Create a behaviour for that alpha */
o_behave = clutter_behaviour_opacity_new (alpha, 0X33, 0xff);
/* Apply it to our actor */
clutter_behaviour_apply (o_behave, group);
/* Make a path behaviour and apply that too */
switch (path_type)
{
case PATH_POLY:
{
ClutterPath *path = clutter_path_new ();
clutter_path_set_description (path, knots_poly);
p_behave = clutter_behaviour_path_new (alpha, path);
}
break;
case PATH_ELLIPSE:
p_behave =
clutter_behaviour_ellipse_new (alpha, 200, 200, 400, 300,
CLUTTER_ROTATE_CW,
0.0, 360.0);
clutter_behaviour_ellipse_set_angle_tilt (CLUTTER_BEHAVIOUR_ELLIPSE (p_behave),
CLUTTER_X_AXIS,
45.0);
clutter_behaviour_ellipse_set_angle_tilt (CLUTTER_BEHAVIOUR_ELLIPSE (p_behave),
CLUTTER_Z_AXIS,
45.0);
break;
case PATH_BSPLINE:
{
ClutterPath *path = clutter_path_new ();
clutter_path_set_description (path, knots_bspline);
p_behave = clutter_behaviour_path_new (alpha, path);
}
break;
}
clutter_behaviour_apply (p_behave, group);
/* start the timeline and thus the animations */
clutter_timeline_start (timeline);
clutter_actor_show_all (stage);
clutter_main();
g_object_unref (o_behave);
g_object_unref (p_behave);
return 0;
}