cookbook: Added complex animations example

To support recipe about using ClutterAnimator to create
complex animations.

doc/cookbook/examples/Makefile.am

@@ -3,6 +3,7 @@ include $(top_srcdir)/build/autotools/Makefile.am.silent
 NULL =
 
 noinst_PROGRAMS = \
+	animations-complex	\
 	animations-rotating	\
 	text-shadow		\
 	textures-reflection	\
@@ -41,6 +42,7 @@ AM_CFLAGS = \
 
 AM_LDFLAGS = $(CLUTTER_LIBS) -export-dynamic
 
+animations_complex_SOURCES                 = animations-complex.c
 animations_rotating_SOURCES                = animations-rotating.c
 text_shadow_SOURCES                        = text-shadow.c
 textures_reflection_SOURCES                = textures-reflection.c

doc/cookbook/examples/animations-complex.c

@@ -0,0 +1,64 @@
+#include <stdlib.h>
+#include <clutter/clutter.h>
+
+#define UI_FILE "animations-complex.json"
+
+/*
+ * start the animation when a key is pressed;
+ * see the signals recipe in the Script chapter for more details
+ */
+gboolean
+foo_key_pressed_cb (ClutterActor *actor,
+                    ClutterEvent *event,
+                    gpointer      user_data)
+{
+  ClutterScript *script = CLUTTER_SCRIPT (user_data);
+
+  ClutterAnimator *animator;
+  clutter_script_get_objects (script,
+                              "animator", &animator,
+                              NULL);
+
+  if (clutter_timeline_is_playing (clutter_animator_get_timeline (animator)))
+    return FALSE;
+
+  clutter_animator_start (animator);
+
+  return TRUE;
+}
+
+int
+main (int argc, char *argv[])
+{
+  ClutterScript *script;
+  ClutterActor *stage;
+
+  GError *error = NULL;
+
+  clutter_init (&argc, &argv);
+
+  script = clutter_script_new ();
+  clutter_script_load_from_file (script, UI_FILE, &error);
+
+  if (error != NULL)
+   {
+     g_critical ("Error loading ClutterScript file %s\n%s", UI_FILE, error->message);
+     g_error_free (error);
+     exit (EXIT_FAILURE);
+   }
+
+  /* connect signal handlers as defined in the script */
+  clutter_script_connect_signals (script, script);
+
+  clutter_script_get_objects (script,
+                              "stage", &stage,
+                              NULL);
+
+  clutter_actor_show (stage);
+
+  clutter_main ();
+
+  g_object_unref (script);
+
+  return EXIT_SUCCESS;
+}

doc/cookbook/examples/animations-complex.json

@@ -0,0 +1,80 @@
+[
+  {
+    "type" : "ClutterStage",
+    "id" : "stage",
+    "width" : 400,
+    "height" : 400,
+    "color" : "#333355ff",
+
+    "signals" : [
+      { "name" : "destroy", "handler" : "clutter_main_quit" },
+      { "name" : "key-press-event", "handler" : "foo_key_pressed_cb" }
+    ],
+
+    "children" : [
+      {
+        "type" : "ClutterRectangle",
+        "id" : "rectangle",
+        "color" : "red",
+        "width" : 100,
+        "height" : 100,
+        "x" : 0,
+        "y" : 0,
+        "scale-gravity" : "center"
+      }
+    ]
+  },
+
+  {
+    "type" : "ClutterAnimator",
+    "id" : "animator",
+    "duration" : 3000,
+
+    "properties" : [
+      {
+        "object" : "rectangle",
+        "name" : "x",
+        "ease-in" : true,
+        "keys" : [
+          [ 0.0, "linear", 0.0 ],
+          [ 0.1, "easeInCubic", 150.0 ],
+          [ 0.8, "linear", 150.0 ],
+          [ 1.0, "easeInCubic", 0.0 ]
+        ]
+      },
+      {
+        "object" : "rectangle",
+        "name" : "y",
+        "ease-in" : true,
+        "keys" : [
+          [ 0.0, "linear", 0.0 ],
+          [ 0.1, "easeInCubic", 150.0 ],
+          [ 0.8, "linear", 150.0 ],
+          [ 1.0, "easeInCubic", 300.0 ]
+        ]
+      },
+      {
+        "object" : "rectangle",
+        "name" : "scale-x",
+        "ease-in" : true,
+        "keys" : [
+          [ 0.1, "linear", 1.0 ],
+          [ 0.3, "easeOutBounce", 2.0 ],
+          [ 0.8, "linear", 2.0 ],
+          [ 1.0, "linear", 1.0 ]
+        ]
+      },
+      {
+        "object" : "rectangle",
+        "name" : "scale-y",
+        "ease-in" : true,
+        "keys" : [
+          [ 0.1, "linear", 1.0 ],
+          [ 0.3, "easeOutBounce", 2.0 ],
+          [ 0.8, "linear", 2.0 ],
+          [ 1.0, "linear", 1.0 ]
+        ]
+      }
+    ]
+  }
+]