--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Deprecated/Widgets/WorldSceneWidget.cpp	Tue May 21 14:27:35 2019 +0200
@@ -0,0 +1,231 @@
+/**
+ * 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 "WorldSceneWidget.h"
+
+#include "PanMouseTracker.h"
+#include "ZoomMouseTracker.h"
+#include "PanZoomMouseTracker.h"
+
+#include <Core/Logging.h>
+#include <Core/OrthancException.h>
+
+#include <math.h>
+#include <memory>
+#include <cassert>
+
+namespace Deprecated
+{
+  // this is an adapter between a IWorldSceneMouseTracker
+  // that is tracking a mouse in scene coordinates/mm and
+  // an IMouseTracker that is tracking a mouse
+  // in screen coordinates/pixels.
+  class WorldSceneWidget::SceneMouseTracker : public IMouseTracker
+  {
+  private:
+    ViewportGeometry                        view_;
+    std::auto_ptr<IWorldSceneMouseTracker>  tracker_;
+
+  public:
+    SceneMouseTracker(const ViewportGeometry& view,
+                      IWorldSceneMouseTracker* tracker) :
+      view_(view),
+      tracker_(tracker)
+    {
+      if (tracker == NULL)
+      {
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
+      }
+    }
+
+    virtual void Render(Orthanc::ImageAccessor& target)
+    {
+      if (tracker_->HasRender())
+      {
+        OrthancStone::CairoSurface surface(target, false /* no alpha */);
+        OrthancStone::CairoContext context(surface);
+        view_.ApplyTransform(context);
+        tracker_->Render(context, view_.GetZoom());
+      }
+    }
+
+    virtual void MouseUp()
+    {
+      tracker_->MouseUp();
+    }
+
+    virtual void MouseMove(int x,
+                           int y,
+                           const std::vector<Touch>& displayTouches)
+    {
+      double sceneX, sceneY;
+      view_.MapPixelCenterToScene(sceneX, sceneY, x, y);
+
+      std::vector<Touch> sceneTouches;
+      for (size_t t = 0; t < displayTouches.size(); t++)
+      {
+        double sx, sy;
+        
+        view_.MapPixelCenterToScene(
+          sx, sy, (int)displayTouches[t].x, (int)displayTouches[t].y);
+        
+        sceneTouches.push_back(
+          Touch(static_cast<float>(sx), static_cast<float>(sy)));
+      }
+      tracker_->MouseMove(x, y, sceneX, sceneY, displayTouches, sceneTouches);
+    }
+  };
+
+
+  bool WorldSceneWidget::RenderCairo(OrthancStone::CairoContext& context)
+  {
+    view_.ApplyTransform(context);
+    return RenderScene(context, view_);
+  }
+
+
+  void WorldSceneWidget::RenderMouseOverCairo(OrthancStone::CairoContext& context,
+                                              int x,
+                                              int y)
+  {
+    ViewportGeometry view = GetView();
+    view.ApplyTransform(context);
+
+    double sceneX, sceneY;
+    view.MapPixelCenterToScene(sceneX, sceneY, x, y);
+
+    if (interactor_)
+    {
+      interactor_->MouseOver(context, *this, view, sceneX, sceneY, GetStatusBar());
+    }
+  }
+
+
+  void WorldSceneWidget::SetSceneExtent(ViewportGeometry& view)
+  {
+    view.SetSceneExtent(GetSceneExtent());
+  }
+
+
+  void WorldSceneWidget::SetSize(unsigned int width,
+                                 unsigned int height)
+  {
+    CairoWidget::SetSize(width, height);
+    view_.SetDisplaySize(width, height);
+  }
+
+
+  void WorldSceneWidget::SetInteractor(IWorldSceneInteractor& interactor)
+  {
+    interactor_ = &interactor;
+  }
+
+
+  void WorldSceneWidget::FitContent()
+  {
+    SetSceneExtent(view_);
+    view_.FitContent();
+
+    NotifyContentChanged();
+  }
+
+
+  void WorldSceneWidget::SetView(const ViewportGeometry& view)
+  {
+    view_ = view;
+
+    NotifyContentChanged();
+  }
+
+
+  IMouseTracker* WorldSceneWidget::CreateMouseTracker(OrthancStone::MouseButton button,
+                                                      int x,
+                                                      int y,
+                                                      OrthancStone::KeyboardModifiers modifiers,
+                                                      const std::vector<Touch>& touches)
+  {
+    double sceneX, sceneY;
+    view_.MapPixelCenterToScene(sceneX, sceneY, x, y);
+
+    // asks the Widget Interactor to provide a mouse tracker
+    std::auto_ptr<IWorldSceneMouseTracker> tracker;
+
+    if (interactor_)
+    {
+      tracker.reset(interactor_->CreateMouseTracker(*this, view_, button, modifiers, x, y, sceneX, sceneY, GetStatusBar(), touches));
+    }
+    
+    if (tracker.get() != NULL)
+    {
+      return new SceneMouseTracker(view_, tracker.release());
+    }
+    else if (hasDefaultMouseEvents_)
+    {
+      printf("has default mouse events\n");
+      if (touches.size() == 2)
+      {
+        printf("2 touches !\n");
+        return new SceneMouseTracker(view_, new PanZoomMouseTracker(*this, touches));
+      }
+      else
+      {
+        switch (button)
+        {
+          case OrthancStone::MouseButton_Middle:
+            return new SceneMouseTracker(view_, new PanMouseTracker(*this, x, y));
+
+          case OrthancStone::MouseButton_Right:
+            return new SceneMouseTracker(view_, new ZoomMouseTracker(*this, x, y));
+
+          default:
+            return NULL;
+        }
+      }
+    }
+    else
+    {
+      return NULL;
+    }
+  }
+
+
+  void WorldSceneWidget::MouseWheel(OrthancStone::MouseWheelDirection direction,
+                                    int x,
+                                    int y,
+                                    OrthancStone::KeyboardModifiers modifiers)
+  {
+    if (interactor_)
+    {
+      interactor_->MouseWheel(*this, direction, modifiers, GetStatusBar());
+    }
+  }
+
+
+  void WorldSceneWidget::KeyPressed(OrthancStone::KeyboardKeys key,
+                                    char keyChar,
+                                    OrthancStone::KeyboardModifiers modifiers)
+  {
+    if (interactor_)
+    {
+      interactor_->KeyPressed(*this, key, keyChar, modifiers, GetStatusBar());
+    }
+  }
+}