--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Viewport/DefaultViewportInteractor.cpp	Thu Aug 20 11:17:16 2020 +0200
@@ -0,0 +1,54 @@
+/**
+ * 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 "DefaultViewportInteractor.h"
+
+#include "../Scene2D/GrayscaleWindowingSceneTracker.h"
+#include "../Scene2D/PanSceneTracker.h"
+#include "../Scene2D/RotateSceneTracker.h"
+#include "../Scene2D/ZoomSceneTracker.h"
+
+namespace OrthancStone
+{
+  IFlexiblePointerTracker* DefaultViewportInteractor::CreateTracker(
+    boost::shared_ptr<IViewport>  viewport,
+    const PointerEvent&           event,
+    unsigned int                  viewportWidth,
+    unsigned int                  viewportHeight)
+  {
+    switch (event.GetMouseButton())
+    {
+      case MouseButton_Left:
+        //return new RotateSceneTracker(viewport, event);
+
+        return new GrayscaleWindowingSceneTracker(
+          viewport, windowingLayer_, event, viewportWidth, viewportHeight);
+
+      case MouseButton_Middle:
+        return new PanSceneTracker(viewport, event);
+      
+      case MouseButton_Right:
+        return new ZoomSceneTracker(viewport, event, viewportHeight);
+
+      default:
+        return NULL;
+    }
+  }
+}