mirror of
https://github.com/brl/mutter.git
synced 2024-11-10 07:56:14 -05:00
134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
#include <stdlib.h>
|
|
#include <gmodule.h>
|
|
#include <clutter/clutter.h>
|
|
|
|
#define PATH_DESCRIPTION \
|
|
"M 0, 0 " \
|
|
"L 0, 300 " \
|
|
"L 300, 300 " \
|
|
"L 300, 0 " \
|
|
"L 0, 0"
|
|
|
|
static gboolean toggled = FALSE;
|
|
|
|
static gboolean
|
|
on_button_press (ClutterActor *actor,
|
|
const ClutterEvent *event,
|
|
gpointer dummy G_GNUC_UNUSED)
|
|
{
|
|
if (!toggled)
|
|
clutter_actor_animate (actor, CLUTTER_EASE_OUT_CUBIC, 500,
|
|
"@constraints.path.offset", 1.0,
|
|
NULL);
|
|
else
|
|
clutter_actor_animate (actor, CLUTTER_EASE_OUT_CUBIC, 500,
|
|
"@constraints.path.offset", 0.0,
|
|
NULL);
|
|
|
|
toggled = !toggled;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gchar *
|
|
node_to_string (const ClutterPathNode *node)
|
|
{
|
|
GString *buffer = g_string_sized_new (256);
|
|
gsize len = 0, i;
|
|
|
|
switch (node->type)
|
|
{
|
|
case CLUTTER_PATH_MOVE_TO:
|
|
g_string_append (buffer, "move-to ");
|
|
len = 1;
|
|
break;
|
|
|
|
case CLUTTER_PATH_LINE_TO:
|
|
g_string_append (buffer, "line-to ");
|
|
len = 1;
|
|
break;
|
|
|
|
case CLUTTER_PATH_CURVE_TO:
|
|
g_string_append (buffer, "curve-to ");
|
|
len = 3;
|
|
break;
|
|
|
|
case CLUTTER_PATH_CLOSE:
|
|
g_string_append (buffer, "close");
|
|
len = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
if (i == 0)
|
|
g_string_append (buffer, "[ ");
|
|
|
|
g_string_append_printf (buffer, "[ %d, %d ]",
|
|
node->points[i].x,
|
|
node->points[i].y);
|
|
|
|
if (i == len - 1)
|
|
g_string_append (buffer, " ]");
|
|
}
|
|
|
|
return g_string_free (buffer, FALSE);
|
|
}
|
|
|
|
static void
|
|
on_node_reached (ClutterPathConstraint *constraint,
|
|
ClutterActor *actor,
|
|
guint index_)
|
|
{
|
|
ClutterPath *path = clutter_path_constraint_get_path (constraint);
|
|
ClutterPathNode node;
|
|
gchar *str;
|
|
|
|
clutter_path_get_node (path, index_, &node);
|
|
|
|
str = node_to_string (&node);
|
|
g_print ("Node %d reached: %s\n", index_, str);
|
|
g_free (str);
|
|
}
|
|
|
|
G_MODULE_EXPORT int
|
|
test_path_constraint_main (int argc,
|
|
char *argv[])
|
|
{
|
|
ClutterActor *stage, *rect;
|
|
ClutterPath *path;
|
|
ClutterColor rect_color = { 0xcc, 0x00, 0x00, 0xff };
|
|
|
|
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
|
|
return 1;
|
|
|
|
stage = clutter_stage_new ();
|
|
clutter_stage_set_title (CLUTTER_STAGE (stage), "Path Constraint");
|
|
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
|
|
|
|
path = clutter_path_new ();
|
|
clutter_path_set_description (path, PATH_DESCRIPTION);
|
|
|
|
rect = clutter_rectangle_new ();
|
|
clutter_rectangle_set_color (CLUTTER_RECTANGLE (rect), &rect_color);
|
|
clutter_actor_set_size (rect, 128, 128);
|
|
clutter_actor_set_reactive (rect, TRUE);
|
|
clutter_actor_add_constraint_with_name (rect, "path", clutter_path_constraint_new (path, 0.0));
|
|
clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
|
|
|
|
g_signal_connect (rect, "button-press-event", G_CALLBACK (on_button_press), NULL);
|
|
g_signal_connect (clutter_actor_get_constraint (rect, "path"),
|
|
"node-reached",
|
|
G_CALLBACK (on_node_reached),
|
|
NULL);
|
|
|
|
clutter_actor_show (stage);
|
|
|
|
clutter_main ();
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|