paraview-dev 5.0.1+dfsg1-4 / usr / include / paraview / vtkChartRepresentation.h

/*=========================================================================

  Program:   ParaView
  Module:    vtkChartRepresentation.h

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkChartRepresentation
// .SECTION Description
// vtkChartRepresentation is the base representation for charting
// representations. Currently, ParaView's charting views are client-side only
// views that render only on the client side. That being the case, when running
// in client-server mode or in parallel, the data-delivery mode is fixed. Hence,
// unlike representations for 3D views, this representation delivers the data in
// RequestData() itself. This makes it possible for client code to call
// UpdatePipeline() on the representation proxy and then access the delivered
// vtkTable on the client.

#ifndef vtkChartRepresentation_h
#define vtkChartRepresentation_h

#include "vtkPVDataRepresentation.h"
#include "vtkWeakPointer.h" // needed for vtkWeakPointer
#include "vtkSmartPointer.h" // needed for vtkSmartPointer
#include "vtkStdString.h" //  needed for vtkStdString.

#include <set> //needed for ivars
#include <map> // needed for map

class vtkChartSelectionRepresentation;
class vtkCSVExporter;
class vtkMultiBlockDataSet;
class vtkPVCacheKeeper;
class vtkPVContextView;
class vtkSelectionDeliveryFilter;
class vtkTable;

class VTKPVCLIENTSERVERCORERENDERING_EXPORT vtkChartRepresentation : public vtkPVDataRepresentation
{
public:
  static vtkChartRepresentation* New();
  vtkTypeMacro(vtkChartRepresentation, vtkPVDataRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // These must only be set during initialization before adding the
  // representation to any views or calling Update().
  void SetSelectionRepresentation(vtkChartSelectionRepresentation*);

  // Description:
  // Set visibility of the representation.
  virtual void SetVisibility(bool visible);

  // Description:
  // This needs to be called on all instances of vtkGeometryRepresentation when
  // the input is modified. This is essential since the geometry filter does not
  // have any real-input on the client side which messes with the Update
  // requests.
  virtual void MarkModified();

  // *************************************************************************

  // Description:
  // Set the field association for arrays to use. When changed, this will call
  // MarkModified().
  void SetFieldAssociation(int);
  vtkGetMacro(FieldAssociation, int);

  // methods to control block selection.
  // When changed, this will call MarkModified().
  void SetCompositeDataSetIndex(unsigned int); //only used for single block selection
  void AddCompositeDataSetIndex(unsigned int);
  void ResetCompositeDataSetIndices();

  // Description:
  // Override because of internal selection representations that need to be
  // initialized as well.
  virtual unsigned int Initialize(unsigned int minIdAvailable, unsigned int maxIdAvailable);

  // Description:
  // vtkAlgorithm::ProcessRequest() equivalent for rendering passes. This is
  // typically called by the vtkView to request meta-data from the
  // representations or ask them to perform certain tasks e.g.
  // PrepareForRendering.
  // Overridden to handle REQUEST_RENDER() to call PrepareForRendering.
  virtual int ProcessViewRequest(vtkInformationRequestKey* request_type,
    vtkInformation* inInfo, vtkInformation* outInfo);

  // Description:
  // Method to provide the default name given the name of a table and a column
  // in that table. When overriding this method, ensure that the implementation
  // does not depend on the instance being initialized or have valid data. This
  // method is called on the client-side when filling up the domains for the
  // properties.
  virtual vtkStdString GetDefaultSeriesLabel(
    const vtkStdString& tableName, const vtkStdString& columnName);

  // Description:
  // Flatten the table, i.e. split any multicomponent columns into separate
  // components.
  vtkSetMacro(FlattenTable, int);
  vtkGetMacro(FlattenTable, int);

  // Description:
  // This method is called on the client-side by the vtkPVContextView whenever a
  // new selection is made on all the visible representations in that view.
  // The goal of this method is allow the representations to transform the
  // selection created in the view (which is an id-based selection based on the
  // vtkTable that is fed into the vtkChart) to an appropriate selection based
  // on the data going into the representation.
  // Return false if the selection is not applicable to this representation or
  // the conversion cannot be made.
  // Default implementation simply ensures that the FieldType on the
  // selection nodes is set to match up with the FieldAssociation on the
  // representation.
  virtual bool MapSelectionToInput(vtkSelection* sel);

  // Description:
  // This is the inverse of MapSelectionToInput(). In this case, we are
  // converting the selection defined on the input for the representation to a
  // selection that corresponds to elements being rendered in the view.
  // The default implementation checks removes vtkSelectionNode items in sel
  // that don't have the FieldType that matches this->FieldAssociation.
  // Similar to MapSelectionToInput(), this method is expected to transform the
  // sel in place and return false is the selection is not applicable to this
  // representation or the conversion cannot be made.
  virtual bool MapSelectionToView(vtkSelection* sel);

  // Description:
  // Called by vtkPVContextView::Export() to export the representation's data to
  // a CSV file. Return false on failure which will call the exporting process
  // to abort and raise an error. Default implementation simply returns false.
  virtual bool Export(vtkCSVExporter* vtkNotUsed(exporter))
    { return false; }

//BTX
protected:
  vtkChartRepresentation();
  ~vtkChartRepresentation();

  // Description:
  // Fill input port information.
  virtual int FillInputPortInformation(int port, vtkInformation* info);

  // Description:
  // This method is called before actual render if this->MTime was modified
  // since the last time this method was called. Subclasses should override to
  // update "appearance" related changes that don't affect data.
  // When this method is called, you're assured that this->ContextView is
  // valid.
  // Note that this method will not be called if this->GetVisibility()
  // returns false, this subclasses should also override SetVisibility() to
  // hide "actors" and such.
  virtual void PrepareForRendering() {}

  // Description:
  // Subclasses should override this to connect inputs to the internal pipeline
  // as necessary. Since most representations are "meta-filters" (i.e. filters
  // containing other filters), you should create shallow copies of your input
  // before connecting to the internal pipeline. The convenience method
  // GetInternalOutputPort will create a cached shallow copy of a specified
  // input for you. The related helper functions GetInternalAnnotationOutputPort,
  // GetInternalSelectionOutputPort should be used to obtain a selection or
  // annotation port whose selections are localized for a particular input data object.
  virtual int RequestData(vtkInformation*,
    vtkInformationVector**, vtkInformationVector*);

  // Description:
  // Adds the representation to the view.  This is called from
  // vtkView::AddRepresentation().  Subclasses should override this method.
  // Returns true if the addition succeeds.
  virtual bool AddToView(vtkView* view);

  // Description:
  // Removes the representation to the view.  This is called from
  // vtkView::RemoveRepresentation().  Subclasses should override this method.
  // Returns true if the removal succeeds.
  virtual bool RemoveFromView(vtkView* view);

  // Description:
  // Overridden to check with the vtkPVCacheKeeper to see if the key is cached.
  virtual bool IsCached(double cache_key);

  // Description:
  // Convenience method to get the first vtkTable from LocalOutput, if any.
  vtkTable* GetLocalOutput();

  // Description:
  // Method to be overrided to transform input data to a vtkTable.
  // The default implementation just returns the data object provided in parameter.
  virtual vtkDataObject* TransformInputData(vtkInformationVector** inputVector,
                                            vtkDataObject* data);

  typedef std::map<std::string, vtkSmartPointer<vtkTable> > MapOfTables;
  // Description:
  // Convenience method to get all vtkTable instances with their associated
  // names.
  bool GetLocalOutput(MapOfTables& tables);

  int FieldAssociation;
  vtkPVCacheKeeper* CacheKeeper;
  vtkWeakPointer<vtkPVContextView> ContextView;
  bool EnableServerSideRendering;
  int FlattenTable;

  vtkSmartPointer<vtkMultiBlockDataSet> LocalOutput;
  std::set<unsigned int> CompositeIndices; //the selected blocks

  vtkWeakPointer<vtkChartSelectionRepresentation> SelectionRepresentation;
private:
  vtkChartRepresentation(const vtkChartRepresentation&); // Not implemented
  void operator=(const vtkChartRepresentation&); // Not implemented

  vtkTimeStamp PrepareForRenderingTime;
  vtkSmartPointer<vtkChartSelectionRepresentation> DummyRepresentation;
//ETX
};

#endif