AHM2012-Slicer-Architecture

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Modularization Object Specialization

  • Slicer is build on top libraries/toolkits/tools supported by the community:
    • Core
      • External_CLAPACK.cmake
      • External_cmcurl.cmake
      • External_CTKAPPLAUNCHER.cmake
      • External_CTK.cmake
      • External_ITKv3.cmake
      • External_teem.cmake
      • External_VTK.cmake
    • Core <- CLI Support [Slicer_BUILD_CLI_SUPPORT = TRUE]
      • External_SlicerExecutionModel.cmake
    • Core <- Python [Slicer_USE_PYTHONQT = TRUE]
      • External_NUMPY.cmake
      • External_python.cmake
    • Core <- ExtensionManager [Slicer_BUILD_EXTENSIONMANAGER_SUPPORT = TRUE]
      • External_LibArchive.cmake
      • External_qMidasAPI.cmake
    • Core <- Python <- Tcl Compatibility layer [Slicer_USE_PYTHONQT_WITH_TCL = TRUE]
      • External_tcl.cmake
      • External_incrTcl.cmake
      • External_tk.cmake
    • Core <- BatchMake
      • External_BatchMake.cmake
    • Core <- OpenIGTLink [Slicer_USE_OpenIGTLink = TRUE]
      • External_OpenIGTLink.cmake
    • Core <- OpenIGTLink <- OpenIGTLinkIF [Slicer_USE_OpenIGTLinkIF = TRUE]
      • External_OpenIGTLinkIF.cmake
    • Core <- Built-in Extension
      • External_ABC.cmake
      • External_BRAINSTools.cmake
      • External_ChangeTrackerPy.cmake
      • External_EMSegment.cmake
    • Core <- ITKv4 [Experimental - ITK_VERSION_MAJOR = 4]
      • External_ITKv4.cmake
    • Core <- ITKv4 <- SimpleITK [Experimental - Slicer_USE_SimpleITK = TRUE]
      • External_PCRE.cmake
      • External_SimpleITK.cmake
      • External_Swig.cmake

AHM2012 SlicerArch.png

Displayable Managers

  • Displayable manager: Specialized logic handling both RenderWindow <-> MRML and RenderWindow <-> Logic interactions.
  • Motivation: Have a well-designed mechanism to ...
    • ...represent MRML node within a Renderer/RenderWindow.
    • ... handle mouse/keyboard interaction.
    • ... synchronize widget across different views.
  • Overview:
    • Each time a viewer is instantiated, it asks a factory to provide him with a DisplayableManagerGroup.
    • DisplayableManagerGroup contain a list of DisplayableManager
    • Each DisplayableManager is associated with Renderer + InteractorStyle

Views and Layouts

  • Implemented layouts
    • conventionalView
    • fourUpView
    • oneUp3DView
    • oneUpRedView
    • oneUpYellowView
    • oneUpGreenView
    • tabbed3DView
    • tabbedSliceView
    • dual3DView
    • triple3DView
    • conventionalWidescreenView
    • threeOverThreeView
    • fourOverFourView
    • compareView
  • Concept
    • Management of Layout and their associated View have been revisited.
    • Layout are now described using a simple XML description. See vtkMRMLLayoutLogic
const char* triple3DEndoscopyView =
  "<layout type=\"vertical\" split=\"true\" >"
  " <item>"
  "  <view class=\"vtkMRMLViewNode\">"
  "   <property name=\"viewlabel\" action=\"default\">1</property>"
  "  </view>"
  " </item>"
  " <item>"
  "  <layout type=\"horizontal\">"
  "   <item>"
  "    <view class=\"vtkMRMLViewNode\" type=\"secondary\">"
  "     <property name=\"viewlabel\" action=\"default\">2</property>"
  "    </view>"
  "   </item>"
  "   <item>"
  "    <view class=\"vtkMRMLViewNode\" type=\"endoscopy\">"
  "     <property name=\"viewlabel\" action=\"default\">3</property>"
  "    </view>"
  "   </item>"
  "  </layout>"
  " </item>"
  "</layout>";
  • MRMLLayoutManager
    • Bridge between MRML nodes, Layout description and corresponding Widgets layout.
    • Aggregates a MRMLLayoutLogic
    • Based on ctkLayoutManager
  • vtkMRMLLayoutLogic
    • Observes LayoutNode and ViewNodes
    • Ensures that at least one 3D view and three slice views are always in the MRML scene (after a scene is closed or imported).
    • Keeps an up-to-date list of the different MRML view nodes (3D, slice ...) that are mapped into a given layout.
  • What's next ?
    • API to ...
      • ... dynamically update a given layout description
      • ... register new layout.