--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Radiography/RadiographyLayerMaskTracker.cpp	Thu Feb 14 10:18:02 2019 +0100
@@ -0,0 +1,140 @@
+/**
+ * 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/>.
+ **/
+
+
+#include "RadiographyLayerMaskTracker.h"
+#include "RadiographyMaskLayer.h"
+
+#include "RadiographySceneCommand.h"
+
+#include <Core/OrthancException.h>
+
+namespace OrthancStone
+{
+  class RadiographyLayerMaskTracker::UndoRedoCommand : public RadiographySceneCommand
+  {
+  private:
+    ControlPoint sourceSceneCp_;
+    ControlPoint targetSceneCp_;
+
+  protected:
+    virtual void UndoInternal(RadiographyLayer& layer) const
+    {
+      RadiographyMaskLayer* maskLayer = dynamic_cast<RadiographyMaskLayer*>(&layer);
+      if (maskLayer == NULL)
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
+      }
+      unsigned int ix, iy; // image coordinates
+      if (maskLayer->GetPixel(ix, iy, sourceSceneCp_.x, sourceSceneCp_.y))
+      {
+        maskLayer->SetCorner(MaskPoint(ix, iy), sourceSceneCp_.index);
+      }
+    }
+
+    virtual void RedoInternal(RadiographyLayer& layer) const
+    {
+      RadiographyMaskLayer* maskLayer = dynamic_cast<RadiographyMaskLayer*>(&layer);
+      if (maskLayer == NULL)
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
+      }
+      unsigned int ix, iy; // image coordinates
+      if (maskLayer->GetPixel(ix, iy, targetSceneCp_.x, targetSceneCp_.y))
+      {
+        maskLayer->SetCorner(MaskPoint(ix, iy), targetSceneCp_.index);
+      }
+    }
+
+  public:
+    UndoRedoCommand(const RadiographyLayerMaskTracker& tracker) :
+      RadiographySceneCommand(tracker.accessor_),
+      sourceSceneCp_(tracker.startSceneCp_),
+      targetSceneCp_(tracker.endSceneCp_)
+    {
+      RadiographyMaskLayer* maskLayer = dynamic_cast<RadiographyMaskLayer*>(&(tracker.accessor_.GetLayer()));
+      if (maskLayer == NULL)
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
+      }
+      unsigned int ix, iy; // image coordinates
+      if (maskLayer->GetPixel(ix, iy, targetSceneCp_.x, targetSceneCp_.y))
+      {
+        maskLayer->SetCorner(MaskPoint(ix, iy), targetSceneCp_.index);
+      }
+    }
+  };
+
+
+  RadiographyLayerMaskTracker::RadiographyLayerMaskTracker(UndoRedoStack& undoRedoStack,
+                                                           RadiographyScene& scene,
+                                                           const ViewportGeometry& view,
+                                                           size_t layer,
+                                                           const ControlPoint& startSceneControlPoint) :
+    undoRedoStack_(undoRedoStack),
+    accessor_(scene, layer),
+    startSceneCp_(startSceneControlPoint),
+    endSceneCp_(startSceneControlPoint)
+  {
+  }
+
+
+  void RadiographyLayerMaskTracker::Render(CairoContext& context,
+                                           double zoom)
+  {
+    throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
+  }
+
+
+  void RadiographyLayerMaskTracker::MouseUp()
+  {
+    if (accessor_.IsValid() && startSceneCp_.x != endSceneCp_.x && startSceneCp_.y != endSceneCp_.y)
+    {
+      undoRedoStack_.Add(new UndoRedoCommand(*this));
+    }
+  }
+
+  
+  void RadiographyLayerMaskTracker::MouseMove(int displayX,
+                                              int displayY,
+                                              double sceneX,
+                                              double sceneY,
+                                              const std::vector<Touch>& displayTouches,
+                                              const std::vector<Touch>& sceneTouches)
+  {
+    if (accessor_.IsValid())
+    {
+      unsigned int ix, iy; // image coordinates
+
+      RadiographyLayer& layer = accessor_.GetLayer();
+      if (layer.GetPixel(ix, iy, sceneX, sceneY))
+      {
+        endSceneCp_ = ControlPoint(sceneX, sceneY, startSceneCp_.index);
+
+        RadiographyMaskLayer* maskLayer = dynamic_cast<RadiographyMaskLayer*>(&layer);
+        if (maskLayer == NULL)
+        {
+          throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
+        }
+        maskLayer->SetCorner(MaskPoint(ix, iy), startSceneCp_.index);
+      }
+    }
+  }
+}