AHM2012-Slicer-Architecture

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Modularization Object Specialization

  • Slicer is built on top libraries/toolkits/tools supported by the community.
  • The new build system allows to optionally disable/enable most of them.
  • Slicer base classes relationship:

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.