vtkXMLShader.h

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

  Program:   Visualization Toolkit
  Module:    vtkXMLShader.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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.

=========================================================================*/
#ifndef __vtkXMLShader_h
#define __vtkXMLShader_h

#include "vtkIOXMLModule.h" // For export macro
#include "vtkObject.h"

class vtkXMLDataElement;

class VTKIOXML_EXPORT vtkXMLShader : public vtkObject
{
public:
  static vtkXMLShader* New();
  vtkTypeMacro(vtkXMLShader, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkGetObjectMacro(RootElement, vtkXMLDataElement);
  void SetRootElement(vtkXMLDataElement*);

  int GetLanguage();

  int GetScope();

  int GetLocation();

  int GetStyle();

  const char* GetName();

  const char* GetEntry();

  const char* GetCode();

  const char** GetArgs();

  static char* LocateFile(const char* filename);

//BTX
  enum LanguageCodes
    {
    LANGUAGE_NONE=0,
    LANGUAGE_MIXED,
    LANGUAGE_CG,
    LANGUAGE_GLSL
    };

  enum ScopeCodes
    {
    SCOPE_NONE=0,
    SCOPE_MIXED,
    SCOPE_VERTEX,
    SCOPE_FRAGMENT
    };

  enum LocationCodes
    {
    LOCATION_NONE=0,
    LOCATION_INLINE,
    LOCATION_FILE,
    LOCATION_LIBRARY
    };
//ETX
protected:
  vtkXMLShader();
  ~vtkXMLShader();

  // Reads the file and fills it in this->Code.
  void ReadCodeFromFile(const char* fullpath);

  char* Code; // cache for the code.
  vtkSetStringMacro(Code);

  vtkXMLDataElement* RootElement;
  vtkXMLDataElement* SourceLibraryElement;
  void SetSourceLibraryElement(vtkXMLDataElement*);

  char** Args;
  void CleanupArgs();
private:
  vtkXMLShader(const vtkXMLShader&); // Not implemented.
  void operator=(const vtkXMLShader&); // Not implemented.
};

#endif