--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Samples/Common/MeasureCommands.h	Thu May 09 10:41:31 2019 +0200
@@ -0,0 +1,91 @@
+/**
+ * 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 <Framework/Scene2D/Scene2D.h>
+#include <boost/shared_ptr.hpp>
+
+// to be moved into Stone
+#include "MeasureTools.h"
+
+namespace OrthancStone
+{
+  class TrackerCommand
+  {
+  public:
+    TrackerCommand(Scene2D& scene) : scene_(scene)
+    {
+
+    }
+    virtual void Undo() = 0;
+    virtual void Redo() = 0;
+    virtual void Update(ScenePoint2D scenePos) = 0;
+
+    Scene2D& GetScene()
+    {
+      return scene_;
+    }
+
+  protected:
+    Scene2D& scene_;
+  private:
+    TrackerCommand(const TrackerCommand&);
+    TrackerCommand& operator=(const TrackerCommand&);
+  };
+
+  typedef boost::shared_ptr<TrackerCommand> TrackerCommandPtr;
+  
+  class CreateMeasureCommand : public TrackerCommand
+  {
+  public:
+    CreateMeasureCommand(Scene2D& scene, MeasureToolList& measureTools);
+    ~CreateMeasureCommand();
+    virtual void Undo() ORTHANC_OVERRIDE;
+    virtual void Redo() ORTHANC_OVERRIDE;
+  protected:
+    MeasureToolList& measureTools_;
+  private:
+    /** Must be implemented by the subclasses that create the actual tool */
+    virtual MeasureToolPtr GetMeasureTool() = 0;
+  };
+
+  typedef boost::shared_ptr<CreateMeasureCommand> CreateMeasureCommandPtr;
+
+  class CreateLineMeasureCommand : public CreateMeasureCommand
+  {
+  public:
+    CreateLineMeasureCommand::CreateLineMeasureCommand(
+      Scene2D& scene, MeasureToolList& measureTools, ScenePoint2D point);
+    
+    void Update(ScenePoint2D scenePos) ORTHANC_OVERRIDE;
+
+  private:
+    virtual MeasureToolPtr GetMeasureTool() ORTHANC_OVERRIDE
+    {
+      return measureTool_;
+    }
+    LineMeasureToolPtr measureTool_;
+    ScenePoint2D       start_;
+    ScenePoint2D       end_;
+  };
+
+  typedef boost::shared_ptr<CreateLineMeasureCommand> CreateLineMeasureCommandPtr;
+}
+