--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Radiography/RadiographyLayerRotateTracker.h	Mon Nov 12 18:00:48 2018 +0100
@@ -0,0 +1,73 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 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 "../Toolbox/UndoRedoStack.h"
+#include "../Toolbox/ViewportGeometry.h"
+#include "../Widgets/IWorldSceneMouseTracker.h"
+#include "RadiographyScene.h"
+
+
+namespace OrthancStone
+{
+  class RadiographyLayerRotateTracker : public IWorldSceneMouseTracker
+  {
+  private:
+    class UndoRedoCommand;
+
+    UndoRedoStack&                   undoRedoStack_;
+    RadiographyScene::LayerAccessor  accessor_;
+    double                           centerX_;
+    double                           centerY_;
+    double                           originalAngle_;
+    double                           clickAngle_;
+    bool                             roundAngles_;
+
+    bool ComputeAngle(double& angle /* out */,
+                      double sceneX,
+                      double sceneY) const;
+
+  public:
+    RadiographyLayerRotateTracker(UndoRedoStack& undoRedoStack,
+                                  RadiographyScene& scene,
+                                  const ViewportGeometry& view,
+                                  size_t layer,
+                                  double x,
+                                  double y,
+                                  bool roundAngles);
+
+    virtual bool HasRender() const
+    {
+      return false;
+    }
+
+    virtual void Render(CairoContext& context,
+                        double zoom);
+
+    virtual void MouseUp();
+
+    virtual void MouseMove(int displayX,
+                           int displayY,
+                           double sceneX,
+                           double sceneY);
+  };
+}