--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Deprecated/Widgets/SliceViewerWidget.h	Tue May 21 14:27:35 2019 +0200
@@ -0,0 +1,155 @@
+/**
+ * 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"
+#include "../Layers/IVolumeSlicer.h"
+#include "../../Toolbox/Extent2D.h"
+#include "../../Messages/IObserver.h"
+
+#include <map>
+
+namespace Deprecated
+{
+  class SliceViewerWidget :
+    public WorldSceneWidget,
+    public OrthancStone::IObserver,
+    public OrthancStone::IObservable
+  {
+  public:
+    ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, GeometryChangedMessage, SliceViewerWidget);
+    ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, ContentChangedMessage, SliceViewerWidget);
+
+
+    // TODO - Use this message in ReferenceLineSource
+    class DisplayedSliceMessage : public OrthancStone::OriginMessage<SliceViewerWidget>
+    {
+      ORTHANC_STONE_MESSAGE(__FILE__, __LINE__);
+      
+    private:
+      const Deprecated::Slice& slice_;
+
+    public:
+      DisplayedSliceMessage(SliceViewerWidget& origin,
+                            const Deprecated::Slice& slice) :
+        OriginMessage(origin),
+        slice_(slice)
+      {
+      }
+
+      const Deprecated::Slice& GetSlice() const
+      {
+        return slice_;
+      }
+    };
+
+  private:
+    SliceViewerWidget(const SliceViewerWidget&);
+    SliceViewerWidget& operator=(const SliceViewerWidget&);
+
+    class Scene;
+    
+    typedef std::map<const IVolumeSlicer*, size_t>  LayersIndex;
+
+    bool                         started_;
+    LayersIndex                  layersIndex_;
+    std::vector<IVolumeSlicer*>  layers_;
+    std::vector<RenderStyle>     styles_;
+    OrthancStone::CoordinateSystem3D           plane_;
+    std::auto_ptr<Scene>         currentScene_;
+    std::auto_ptr<Scene>         pendingScene_;
+    std::vector<bool>            changedLayers_;
+
+    bool LookupLayer(size_t& index /* out */,
+                     const IVolumeSlicer& layer) const;
+
+    void GetLayerExtent(OrthancStone::Extent2D& extent,
+                        IVolumeSlicer& source) const;
+
+    void OnGeometryReady(const IVolumeSlicer::GeometryReadyMessage& message);
+
+    virtual void OnContentChanged(const IVolumeSlicer::ContentChangedMessage& message);
+
+    virtual void OnSliceChanged(const IVolumeSlicer::SliceContentChangedMessage& message);
+
+    virtual void OnLayerReady(const IVolumeSlicer::LayerReadyMessage& message);
+
+    virtual void OnLayerError(const IVolumeSlicer::LayerErrorMessage& message);
+
+    void ObserveLayer(IVolumeSlicer& source);
+
+    void ResetChangedLayers();
+
+  public:
+    SliceViewerWidget(OrthancStone::MessageBroker& broker, 
+                      const std::string& name);
+
+    virtual OrthancStone::Extent2D GetSceneExtent();
+
+  protected:
+    virtual bool RenderScene(OrthancStone::CairoContext& context,
+                             const ViewportGeometry& view);
+
+    void ResetPendingScene();
+
+    void UpdateLayer(size_t index,
+                     ILayerRenderer* renderer,
+                     const OrthancStone::CoordinateSystem3D& plane);
+
+    void InvalidateAllLayers();
+
+    void InvalidateLayer(size_t layer);
+    
+  public:
+    virtual ~SliceViewerWidget();
+
+    size_t AddLayer(IVolumeSlicer* layer);  // Takes ownership
+
+    void ReplaceLayer(size_t layerIndex, IVolumeSlicer* layer); // Takes ownership
+
+    void RemoveLayer(size_t layerIndex);
+
+    size_t GetLayerCount() const
+    {
+      return layers_.size();
+    }
+
+    const RenderStyle& GetLayerStyle(size_t layer) const;
+
+    void SetLayerStyle(size_t layer,
+                       const RenderStyle& style);
+
+    void SetSlice(const OrthancStone::CoordinateSystem3D& plane);
+
+    const OrthancStone::CoordinateSystem3D& GetSlice() const
+    {
+      return plane_;
+    }
+
+    virtual bool HasAnimation() const
+    {
+      return true;
+    }
+
+    virtual void DoAnimation();
+  };
+}