tests: Add a PathConstraint interactive test

tests/interactive/Makefile.am

@@ -57,7 +57,8 @@ UNIT_TESTS = \
 	test-scrolling.c \
 	test-bind.c \
 	test-cogl-point-sprites.c \
-	test-table-layout.c
+	test-table-layout.c \
+	test-path-constraint.c
 
 if X11_TESTS
 UNIT_TESTS += test-pixmap.c

tests/interactive/test-path-constraint.c

@@ -0,0 +1,63 @@
+#include <stdlib.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;
+}
+
+int
+test_path_constraint_main (int   argc,
+                           char *argv[])
+{
+  ClutterActor *stage, *rect;
+  ClutterPath *path;
+  ClutterColor rect_color = { 0xcc, 0x00, 0x00, 0xff };
+
+  clutter_init (&argc, &argv);
+
+  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);
+
+  clutter_actor_show (stage);
+
+  clutter_main ();
+
+  return EXIT_SUCCESS;
+}