vtkMatplotlibMathTextUtilities.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkMatplotlibMathTextUtilities.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 vtkMatplotlibMathTextUtilities_h
#define vtkMatplotlibMathTextUtilities_h
 
#include "vtkRenderingMatplotlibModule.h" // For export macro
#include "vtkMathTextUtilities.h"
 
struct _object;
typedef struct _object PyObject;
class vtkImageData;
class vtkPath;
class vtkPythonInterpreter;
class vtkTextProperty;
 
class VTKRENDERINGMATPLOTLIB_EXPORT vtkMatplotlibMathTextUtilities :
    public vtkMathTextUtilities
{
public:
  vtkTypeMacro(vtkMatplotlibMathTextUtilities, vtkMathTextUtilities);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  static vtkMatplotlibMathTextUtilities *New();
 
  virtual bool IsAvailable();
 
 
  bool GetBoundingBox(vtkTextProperty *tprop, const char *str, int dpi,
                      int bbox[4]);
 
  bool GetMetrics(vtkTextProperty *tprop, const char *str, int dpi,
                  vtkTextRenderer::Metrics &metrics);
 
 
  bool RenderString(const char *str, vtkImageData *data, vtkTextProperty *tprop,
                    int dpi, int textDims[2] = NULL);
 
 
  bool StringToPath(const char *str, vtkPath *path, vtkTextProperty *tprop,
                    int dpi);
 
 
  vtkSetMacro(ScaleToPowerOfTwo, bool);
  vtkGetMacro(ScaleToPowerOfTwo, bool);
 
protected:
  vtkMatplotlibMathTextUtilities();
  virtual ~vtkMatplotlibMathTextUtilities();
 
  bool InitializeMaskParser();
  bool InitializePathParser();
  bool InitializeFontPropertiesClass();
 
  bool CheckForError();
  bool CheckForError(PyObject *object);
 
  PyObject * GetFontProperties(vtkTextProperty *tprop);
 
  void CleanupPythonObjects();
 
  vtkPythonInterpreter* Interpreter;
  PyObject *MaskParser;
  PyObject *PathParser;
  PyObject *FontPropertiesClass;
 
  static void GetJustifiedBBox(int rows, int cols, vtkTextProperty *tprop,
                               int bbox[4]);
 
  // Rotate the 4 2D corner points by the specified angle (degrees) around the
  // origin and calculate the bounding box
  static void RotateCorners(double angleDeg, double corners[4][2],
                            double bbox[4]);
 
  bool ScaleToPowerOfTwo;
  bool PrepareImageData(vtkImageData *data, int bbox[4]);
 
private:
  vtkMatplotlibMathTextUtilities(const vtkMatplotlibMathTextUtilities&); // Not implemented.
  void operator=(const vtkMatplotlibMathTextUtilities&); // Not implemented.
 
 
  enum Availability
    {
    NOT_TESTED = 0,
    AVAILABLE,
    UNAVAILABLE
    };
 
 
  static Availability CheckMPLAvailability();
  static void DisableMPL()
    {
    MPLMathTextAvailable = UNAVAILABLE;
    };
 
 
  static Availability MPLMathTextAvailable;
};
 
#endif