--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Deprecated/Widgets/ZoomMouseTracker.h	Tue May 21 14:27:35 2019 +0200
@@ -0,0 +1,64 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., 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
+
+#include "WorldSceneWidget.h"
+
+namespace Deprecated
+{
+  class ZoomMouseTracker : public IWorldSceneMouseTracker
+  {
+  private:
+    WorldSceneWidget&  that_;
+    double             originalZoom_;
+    int                downX_;
+    int                downY_;
+    double             centerX_;
+    double             centerY_;
+    bool               idle_;
+    double             normalization_;
+    
+  public:
+    ZoomMouseTracker(WorldSceneWidget& that,
+                     int x,
+                     int y);
+    
+    virtual bool HasRender() const
+    {
+      return false;
+    }
+
+    virtual void MouseUp()
+    {
+    }
+
+    virtual void Render(OrthancStone::CairoContext& context,
+                        double zoom);
+
+    virtual void MouseMove(int displayX,
+                           int displayY,
+                           double x,
+                           double y,
+                           const std::vector<Touch>& displayTouches,
+                           const std::vector<Touch>& sceneTouches);
+  };
+}