[niepce] We must call gtk_clutter_init()

[Hubert Figuière <hub src gnome org>]

commit f46594d06b80f6e6941edd9c9449b7e1fded3c4c
Author: Hubert Figuière <hub figuiere net>
Date:   Thu Jun 4 23:21:44 2015 -0400

    We must call gtk_clutter_init()

 src/fwk/toolkit/application.cpp |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/fwk/toolkit/application.cpp b/src/fwk/toolkit/application.cpp
index dc76152..b8ac447 100644
--- a/src/fwk/toolkit/application.cpp
+++ b/src/fwk/toolkit/application.cpp
@@ -24,6 +24,7 @@
 #include <gtkmm/aboutdialog.h>
 #include <gtkmm/settings.h>
 #include <cluttermm/init.h>
+#include <clutter-gtk/clutter-gtk.h>
 
 #include "fwk/base/debug.hpp"
 #include "fwk/utils/modulemanager.hpp"
@@ -43,6 +44,12 @@ Application::Application(int & argc, char** &argv, const char* app_id,
     , m_module_manager(new ModuleManager())
     , m_gtkapp(Gtk::Application::create(argc, argv, app_id))
 {
+    ClutterInitError error = gtk_clutter_init(&argc, &argv);
+    if (error != CLUTTER_INIT_SUCCESS) {
+        ERR_OUT("clutter init error: %d", (int)error);
+    }
+    // We still need to call Clutter::init() for the wrappers
+    // But after gtk_clutter_init(). Safe to call clutter_init().
     Clutter::init(argc, argv);
     m_gtkapp->signal_startup().connect(
         sigc::mem_fun(*this, &Application::on_startup));