mutter/examples/behave.c

199 lines
5.4 KiB
C

#include <clutter/clutter.h>
static void
button_press_cb (ClutterStage *stage,
ClutterButtonEvent *event,
gpointer data)
{
const gchar *click_type;
switch (event->type)
{
case CLUTTER_2BUTTON_PRESS:
click_type = "double";
break;
case CLUTTER_3BUTTON_PRESS:
click_type = "triple";
break;
default:
click_type = "single";
break;
}
g_print ("%s button press event\n", click_type);
}
static void
scroll_event_cb (ClutterStage *stage,
ClutterScrollEvent *event,
gpointer data)
{
g_print ("scroll direction: %s\n",
event->direction == CLUTTER_SCROLL_UP ? "up"
: "down");
}
typedef enum {
PATH_POLY,
PATH_ELLIPSE,
PATH_BSPLINE
} path_t;
#define MAGIC 0.551784
#define RADIUS 200
int
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 };
GdkPixbuf *pixbuf;
int i;
char *p;
path_t path_type = PATH_POLY;
ClutterKnot knots_poly[] = {{ 0, 0 }, { 0, 300 }, { 300, 300 },
{ 300, 0 }, {0, 0 }};
ClutterKnot origin = { 200, 200 };
ClutterKnot knots_bspline[] = {{ -RADIUS, 0 },
{ -RADIUS, RADIUS*MAGIC },
{ -RADIUS*MAGIC, RADIUS },
{ 0, RADIUS },
{ RADIUS*MAGIC, RADIUS },
{ RADIUS, RADIUS*MAGIC },
{ RADIUS, 0 },
{ RADIUS, -RADIUS*MAGIC },
{ RADIUS*MAGIC, -RADIUS },
{ 0, -RADIUS },
{ -RADIUS*MAGIC, -RADIUS },
{ -RADIUS, -RADIUS*MAGIC },
{ -RADIUS, 0}};
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);
pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
if (!pixbuf)
g_error("pixbuf load failed");
clutter_stage_set_color (CLUTTER_STAGE (stage),
&stage_color);
/* Make a hand */
group = clutter_group_new ();
clutter_group_add (CLUTTER_GROUP (stage), group);
clutter_actor_show (group);
rect = clutter_rectangle_new ();
clutter_actor_set_position (rect, 0, 0);
clutter_actor_set_size (rect,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect),
&rect_bg_color);
clutter_rectangle_set_border_width (CLUTTER_RECTANGLE (rect), 10);
clutter_color_parse ("DarkSlateGray", &rect_border_color);
clutter_rectangle_set_border_color (CLUTTER_RECTANGLE (rect),
&rect_border_color);
clutter_actor_show (rect);
hand = clutter_texture_new_from_pixbuf (pixbuf);
clutter_actor_set_position (hand, 0, 0);
clutter_actor_show (hand);
clutter_group_add_many (CLUTTER_GROUP (group), rect, hand, NULL);
/* Make a timeline */
timeline = clutter_timeline_new (100, 26); /* num frames, fps */
g_object_set (timeline, "loop", TRUE, 0);
/* Set an alpha func to power behaviour - ramp is constant rise/fall */
alpha = clutter_alpha_new_full (timeline,
CLUTTER_ALPHA_SINE,
NULL, NULL);
/* 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:
p_behave = clutter_behaviour_path_new (alpha, knots_poly, 5);
break;
case PATH_ELLIPSE:
p_behave =
clutter_behaviour_ellipse_new (alpha, &origin, 400, 300,
1024, 0);
break;
case PATH_BSPLINE:
origin.x = 0;
origin.y = RADIUS;
p_behave =
clutter_behaviour_bspline_new (alpha, knots_bspline,
sizeof (knots_bspline)/sizeof(ClutterKnot));
clutter_behaviour_bspline_set_origin (
CLUTTER_BEHAVIOUR_BSPLINE (p_behave),
&origin);
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;
}