--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Scene2DViewport/MeasureCommands.cpp	Tue Jul 07 16:21:02 2020 +0200
@@ -0,0 +1,112 @@
+/**
+ * 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/>.
+ **/
+
+#include "MeasureCommands.h"
+
+#include <memory>
+
+#include <boost/make_shared.hpp>
+#include <boost/ref.hpp>
+
+namespace OrthancStone
+{
+  void CreateMeasureCommand::Undo()
+  {
+    std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock());
+    // simply disable the measure tool upon undo
+    GetMeasureTool()->Disable();
+    lock->GetController().RemoveMeasureTool(GetMeasureTool());
+  }
+
+  void CreateMeasureCommand::Redo()
+  {
+    std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock());
+    GetMeasureTool()->Enable();
+    lock->GetController().AddMeasureTool(GetMeasureTool());
+  }
+
+  CreateMeasureCommand::CreateMeasureCommand(boost::shared_ptr<IViewport> viewport)
+    : MeasureCommand(viewport)
+  {
+
+  }
+
+  CreateMeasureCommand::~CreateMeasureCommand()
+  {
+    // deleting the command should not change the model state
+    // we thus leave it as is
+  }
+
+  void DeleteMeasureCommand::Redo()
+  {
+    std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock());
+    // simply disable the measure tool upon undo
+    GetMeasureTool()->Disable();
+    lock->GetController().RemoveMeasureTool(GetMeasureTool());
+  }
+
+  void DeleteMeasureCommand::Undo()
+  {
+    std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock());
+    GetMeasureTool()->Enable();
+    lock->GetController().AddMeasureTool(GetMeasureTool());
+  }
+
+  DeleteMeasureCommand::~DeleteMeasureCommand()
+  {
+    // deleting the command should not change the model state
+    // we thus leave it as is
+  }
+
+  DeleteMeasureCommand::DeleteMeasureCommand(boost::shared_ptr<MeasureTool> measureTool, boost::shared_ptr<IViewport> viewport)
+    : MeasureCommand(viewport)
+    , mementoOriginal_(measureTool->GetMemento())
+    , measureTool_(measureTool)
+    , mementoModified_(measureTool->GetMemento())
+  {
+    std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport_->Lock());
+    GetMeasureTool()->Disable();
+    lock->GetController().RemoveMeasureTool(GetMeasureTool());
+  }
+
+  EditMeasureCommand::EditMeasureCommand(boost::shared_ptr<MeasureTool> measureTool, boost::shared_ptr<IViewport> viewport)
+    : MeasureCommand(viewport)
+    , mementoOriginal_(measureTool->GetMemento())
+    , mementoModified_(measureTool->GetMemento())
+  {
+
+  }
+
+  EditMeasureCommand::~EditMeasureCommand()
+  {
+
+  }
+
+  void EditMeasureCommand::Undo()
+  {
+    // simply disable the measure tool upon undo
+    GetMeasureTool()->SetMemento(mementoOriginal_);
+  }
+
+  void EditMeasureCommand::Redo()
+  {
+    GetMeasureTool()->SetMemento(mementoModified_);
+  }
+}