--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Scene2DViewport/MeasureTrackers.h	Tue Jul 07 16:21:02 2020 +0200
@@ -0,0 +1,80 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 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 "IFlexiblePointerTracker.h"
+#include "../Scene2D/Scene2D.h"
+#include "../Scene2D/PointerEvent.h"
+
+#include "MeasureTool.h"
+#include "MeasureCommands.h"
+
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+
+#include <vector>
+
+namespace OrthancStone
+{
+  class CreateMeasureTracker : public IFlexiblePointerTracker
+  {
+  public:
+    virtual void Cancel() ORTHANC_OVERRIDE;
+    virtual bool IsAlive() const ORTHANC_OVERRIDE;
+  protected:
+    CreateMeasureTracker(boost::shared_ptr<IViewport> viewport);
+
+    ~CreateMeasureTracker();
+  
+  protected:
+    boost::shared_ptr<CreateMeasureCommand>         command_;
+    boost::shared_ptr<IViewport>          viewport_;
+    bool                            alive_;
+
+  private:
+    bool                            commitResult_;
+  };
+
+  class EditMeasureTracker : public IFlexiblePointerTracker
+  {
+  public:
+    virtual void Cancel() ORTHANC_OVERRIDE;
+    virtual bool IsAlive() const ORTHANC_OVERRIDE;
+  protected:
+    EditMeasureTracker(boost::shared_ptr<IViewport> viewport, const PointerEvent& e);
+
+    ~EditMeasureTracker();
+
+  protected:
+    boost::shared_ptr<EditMeasureCommand> command_;
+    boost::shared_ptr<IViewport>   viewport_;
+    bool                                  alive_;
+    
+    ScenePoint2D                          GetOriginalClickPosition() const
+    {
+      return originalClickPosition_;
+    }
+  private:
+    ScenePoint2D                          originalClickPosition_;
+    bool                                  commitResult_;
+  };
+}
+