# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1596831816 -7200
# Node ID 30157129921234145541d2c0be4271b3a476973d
# Parent  0443d04416d93199439d2f8f2502fc5adc7692ed
DefaultViewportInteractor::SetWindowingLayer()

diff -r 0443d04416d9 -r 301571299212 OrthancStone/Samples/Common/RtViewerApp.h
--- a/OrthancStone/Samples/Common/RtViewerApp.h	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Samples/Common/RtViewerApp.h	Fri Aug 07 22:23:36 2020 +0200
@@ -73,7 +73,7 @@
   public:
     void RunSdl(int argc, char* argv[]);
     void SdlRunLoop(const std::vector<boost::shared_ptr<OrthancStone::RtViewerView> >& views,
-                    OrthancStone::IViewportInteractor& interactor);
+                    OrthancStone::DefaultViewportInteractor& interactor);
   private:
     void ProcessOptions(int argc, char* argv[]);
     void HandleApplicationEvent(const SDL_Event& event);
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Samples/Common/RtViewerView.cpp
--- a/OrthancStone/Samples/Common/RtViewerView.cpp	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Samples/Common/RtViewerView.cpp	Fri Aug 07 22:23:36 2020 +0200
@@ -320,6 +320,8 @@
     {
       ctVolumeLayerSource_->SetConfigurator(style);
     }
+
+    ctLayer_ = depth;
   }
 
   void RtViewerView::SetDoseVolumeSlicer(const boost::shared_ptr<OrthancStone::IVolumeSlicer>& volume,
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Samples/Common/RtViewerView.h
--- a/OrthancStone/Samples/Common/RtViewerView.h	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Samples/Common/RtViewerView.h	Fri Aug 07 22:23:36 2020 +0200
@@ -51,6 +51,7 @@
       : app_(app)
       , currentPlane_(0)
       , projection_(projection)
+      , ctLayer_(0)
     {
       viewport_ = CreateViewport(canvasId);
       FLOATING_INFOTEXT_LAYER_ZINDEX = 6;
@@ -101,6 +102,11 @@
       return viewport_;
     }
 
+    int GetCtLayerIndex() const
+    {
+      return ctLayer_;
+    }
+
   private:
     void SetInfoDisplayMessage(std::string key, std::string value);
     boost::shared_ptr<RtViewerApp> GetApp();
@@ -132,5 +138,7 @@
     int FLOATING_INFOTEXT_LAYER_ZINDEX;
     int FIXED_INFOTEXT_LAYER_ZINDEX;
     boost::shared_ptr<IViewport> viewport_;
+
+    int ctLayer_;
   };
 }
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Samples/Sdl/RtViewer/RtViewerSdl.cpp
--- a/OrthancStone/Samples/Sdl/RtViewer/RtViewerSdl.cpp	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Samples/Sdl/RtViewer/RtViewerSdl.cpp	Fri Aug 07 22:23:36 2020 +0200
@@ -245,7 +245,7 @@
   }
 
   void RtViewerApp::SdlRunLoop(const std::vector<boost::shared_ptr<OrthancStone::RtViewerView> >& views,
-                               OrthancStone::IViewportInteractor& interactor)
+                               OrthancStone::DefaultViewportInteractor& interactor)
   {
     using namespace OrthancStone;
 
@@ -373,6 +373,7 @@
               switch (sdlEvent.type)
               {
               case SDL_MOUSEBUTTONDOWN:
+                interactor.SetWindowingLayer(view->GetCtLayerIndex());
                 lock->GetController().HandleMousePress(interactor, p,
                                                        lock->GetCompositor().GetCanvasWidth(),
                                                        lock->GetCompositor().GetCanvasHeight());
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Samples/Sdl/SingleFrameViewer/SdlSimpleViewer.cpp
--- a/OrthancStone/Samples/Sdl/SingleFrameViewer/SdlSimpleViewer.cpp	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Samples/Sdl/SingleFrameViewer/SdlSimpleViewer.cpp	Fri Aug 07 22:23:36 2020 +0200
@@ -143,6 +143,7 @@
         application->LoadOrthancFrame(source, instanceId, frameIndex);
 
         OrthancStone::DefaultViewportInteractor interactor;
+        interactor.SetWindowingLayer(0);
 
         {
           int scancodeCount = 0;
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Samples/WebAssembly/RtViewer/RtViewerWasm.cpp
--- a/OrthancStone/Samples/WebAssembly/RtViewer/RtViewerWasm.cpp	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Samples/WebAssembly/RtViewer/RtViewerWasm.cpp	Fri Aug 07 22:23:36 2020 +0200
@@ -145,8 +145,6 @@
     }
 
     StartLoaders();
-
-    DefaultViewportInteractor interactor;
   }
 }
 
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Sources/Scene2DViewport/ViewportController.cpp
--- a/OrthancStone/Sources/Scene2DViewport/ViewportController.cpp	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Sources/Scene2DViewport/ViewportController.cpp	Fri Aug 07 22:23:36 2020 +0200
@@ -34,18 +34,18 @@
 namespace OrthancStone
 {
   IFlexiblePointerTracker* DefaultViewportInteractor::CreateTracker(
-    boost::shared_ptr<IViewport>          viewport,
-    const PointerEvent& event,
-    unsigned int        viewportWidth,
-    unsigned int        viewportHeight)
+    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);
 
-        // Assumes that the layer whose windowing is controlled, is the one with index "0"
-        return new GrayscaleWindowingSceneTracker(viewport, 0, event, viewportWidth, viewportHeight);
+        return new GrayscaleWindowingSceneTracker(
+          viewport, windowingLayer_, event, viewportWidth, viewportHeight);
 
       case MouseButton_Middle:
         return new PanSceneTracker(viewport, event);
diff -r 0443d04416d9 -r 301571299212 OrthancStone/Sources/Scene2DViewport/ViewportController.h
--- a/OrthancStone/Sources/Scene2DViewport/ViewportController.h	Fri Aug 07 21:48:43 2020 +0200
+++ b/OrthancStone/Sources/Scene2DViewport/ViewportController.h	Fri Aug 07 22:23:36 2020 +0200
@@ -51,7 +51,27 @@
   // TODO - Move this to another file
   class DefaultViewportInteractor : public IViewportInteractor
   {
+  private:
+    // Index of the layer whose windowing is altered by clicking the
+    // left mouse button
+    int  windowingLayer_;
+    
   public:
+    DefaultViewportInteractor() :
+      windowingLayer_(0)
+    {
+    }
+
+    int GetWindowingLayer() const
+    {
+      return windowingLayer_;
+    }
+
+    void SetWindowingLayer(int layerIndex)
+    {
+      windowingLayer_ = layerIndex;
+    }
+    
     virtual IFlexiblePointerTracker* CreateTracker(boost::shared_ptr<IViewport> viewport,
                                                    const PointerEvent& event,
                                                    unsigned int viewportWidth,