--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/Sdl/SdlEngine.h	Thu Apr 27 14:50:20 2017 +0200
@@ -0,0 +1,78 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017 Osimis, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#if ORTHANC_ENABLE_SDL == 1
+
+#include "SdlBuffering.h"
+#include "../BinarySemaphore.h"
+
+#include <boost/thread.hpp>
+
+namespace OrthancStone
+{
+  class SdlEngine : public IViewport::IChangeObserver
+  {
+  private:
+    SdlWindow&        window_;
+    IViewport&        viewport_;
+    SdlBuffering      buffering_;
+    boost::thread     renderThread_;
+    bool              continue_;
+    BinarySemaphore   renderFrame_;
+    uint32_t          refreshEvent_;
+    bool              viewportChanged_;
+
+    void RenderFrame();
+
+    static void RenderThread(SdlEngine* that);
+
+    static KeyboardModifiers GetKeyboardModifiers(const uint8_t* keyboardState,
+                                                  const int scancodeCount);
+
+    void SetSize(unsigned int width,
+                 unsigned int height);
+
+    void Stop();
+
+    void Refresh();
+
+  public:
+    SdlEngine(SdlWindow& window,
+              IViewport& viewport);
+  
+    virtual ~SdlEngine();
+
+    virtual void NotifyChange(const IViewport& viewport)
+    {
+      viewportChanged_ = true;
+    }
+
+    void Run();
+
+    static void GlobalInitialize();
+
+    static void GlobalFinalize();
+  };
+}
+
+#endif