libopencascade-ocaf-lite-dev 6.5.0.dfsg-2build1 / usr / include / opencascade / TDF_LabelNode.hxx

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// File:        TDF_LabelNode.hxx
//              ------------------
// Author:      DAUTRY Philippe
//              <fid@fox.paris1.matra-dtv.fr>
// Copyright:   Matra Datavision 1997

// Version:     0.0
// History:     Version Date            Purpose
//              0.0     Feb  6 1997     Creation

//#include <TDF_Data.hxx>

#ifndef TDF_LabelNode_HeaderFile
#define TDF_LabelNode_HeaderFile

#include <TCollection_AsciiString.hxx>
#include <TDF_Attribute.hxx>
#include <TDF_LabelNodePtr.hxx>
#include <NCollection_IncAllocator.hxx>

class TDF_Attribute;
class TDF_AttributeIterator;
class TDF_ChildIterator;
class TDF_Data;
class Handle_TDF_Data;
class TDF_Label;

#define KEEP_LOCAL_ROOT

enum {
  TDF_LabelNodeImportMsk = (int) 0x80000000, // Because the sign bit (HP).
  TDF_LabelNodeAttModMsk = 0x40000000,
  TDF_LabelNodeMayModMsk = 0x20000000,
  TDF_LabelNodeFlagsMsk = (TDF_LabelNodeImportMsk \
                         | TDF_LabelNodeAttModMsk \
                         | TDF_LabelNodeMayModMsk)
};

//=======================================================================
//class: TDF_LabelNode
//=======================================================================

class TDF_LabelNode {

  public :

  // Public Methods
  // --------------------------------------------------------------------------

  // Father access
  inline TDF_LabelNode* Father() const
    { return myFather; };

  // Brother access
  inline TDF_LabelNode* Brother() const
    { return myBrother; };

  // Child access
  inline TDF_LabelNode* FirstChild() const
    { return myFirstChild; };

    // Attribute access
  inline const Handle(TDF_Attribute)& FirstAttribute() const
    { return myFirstAttribute; };

  // Tag access
  inline Standard_Integer Tag() const
    { return myTag; };

  // Depth access
  inline Standard_Integer Depth() const
    { return (myFlags & ~TDF_LabelNodeFlagsMsk); };

  // IsRoot
  inline Standard_Boolean IsRoot() const
    { return myFather == NULL; };

  // Data
  Standard_EXPORT TDF_Data * Data() const;

  // Flag AttributesModified access
  inline void AttributesModified(const Standard_Boolean aStatus)
    {
      myFlags = (aStatus) ?
        (myFlags | TDF_LabelNodeAttModMsk) :
          (myFlags & ~TDF_LabelNodeAttModMsk);
      if (aStatus) AllMayBeModified();
    };

  inline Standard_Boolean AttributesModified() const
    { return ((myFlags & TDF_LabelNodeAttModMsk) != 0); };

  // Flag MayBeModified access
  inline void MayBeModified(const Standard_Boolean aStatus)
    { myFlags = (aStatus) ?
        (myFlags | TDF_LabelNodeMayModMsk) :
          (myFlags & ~TDF_LabelNodeMayModMsk); };

  inline Standard_Boolean MayBeModified() const
    { return ((myFlags & TDF_LabelNodeMayModMsk) != 0); };

  // Constructor
  TDF_LabelNode(TDF_Data* Data); // Useful for root node.
  
  // Destructor
  ~TDF_LabelNode();

  // Memory management
  void * operator new (size_t aSize,
                       const Handle(NCollection_IncAllocator)& anAlloc)
        { return anAlloc -> Allocate (aSize); }
  void  operator delete(void *) { }
        // nothing to do in operator delete since IncAllocator does not need it
  // Public Friends
  // --------------------------------------------------------------------------

  friend class TDF_Data;
  friend class TDF_Label;

  private :

  void* operator new(size_t);

  // Private Methods
  // --------------------------------------------------------------------------

  // Constructor
  TDF_LabelNode(const Standard_Integer Tag, TDF_LabelNode* Father);

  // Others
  void AddAttribute(const Handle(TDF_Attribute)& afterAtt,
                    const Handle(TDF_Attribute)& newAtt);

  void RemoveAttribute(const Handle(TDF_Attribute)& afterAtt,
                       const Handle(TDF_Attribute)& oldAtt);

  TDF_LabelNode* RootNode ();

  const TDF_LabelNode* RootNode () const;

  Standard_EXPORT void AllMayBeModified();

  // Tag modification
  inline void Tag(const Standard_Integer aTag)
    { myTag = aTag; };

  // Depth modification
  inline void Depth(const Standard_Integer aDepth)
    { myFlags = ((myFlags & TDF_LabelNodeFlagsMsk) | aDepth); };

  // Flag Imported access
  inline void Imported(const Standard_Boolean aStatus)
    { myFlags = (aStatus) ?
        (myFlags | TDF_LabelNodeImportMsk) :
          (myFlags & ~TDF_LabelNodeImportMsk); };

  inline Standard_Boolean IsImported() const
    { return ((myFlags & TDF_LabelNodeImportMsk) != 0); };

  // Private Fields
  // --------------------------------------------------------------------------

  TDF_LabelNodePtr       myFather; 
  TDF_LabelNodePtr       myBrother; 
  TDF_LabelNodePtr       myFirstChild;
  TDF_LabelNodePtr       myLastFoundChild; //jfa 10.01.2003
  Standard_Integer       myTag;
  Standard_Integer       myFlags; // Flags & Depth
  Handle(TDF_Attribute)  myFirstAttribute;
#ifdef KEEP_LOCAL_ROOT
  TDF_Data *             myData;
#endif
#ifdef DEB
  TCollection_AsciiString myDebugEntry;
#endif
};

#endif

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