ColorBuffer.hh

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/*
 * class ColorBuffer
 *
 * $Date$
 * $Revision$
 *
 */

#ifndef COLOR_BUFFER_HH__
#define COLOR_BUFFER_HH__

#include "WImage/Image.hh"

class
ColorBuffer
{
public:
  ColorBuffer (int xysize, int colors = 3, clrmodel cmodel = cm_rgb);

  virtual ~ColorBuffer (void);

  virtual void swapColors (int ch1, int ch2);

  inline clrmodel colormodel (void) const { return m_cmodel; }
  inline int colors (void) const { return m_colors; }
  virtual void colormodel (clrmodel model);

  virtual coeff smax (void) const;
  virtual coeff smin (void) const;

#ifndef _WIN32_WCE

  virtual int fileSize (char const *fname) const;
#endif

  virtual bool equals (ColorBuffer &buf) const;
  virtual bool epsilons (ColorBuffer &buf, coeff epsilon) const;

  virtual void truncate (coeff min = 0, coeff max = 255);

  virtual void beautify (int yoffs = 0, int xoffs = 0,
                         int ysize = 0, int xsize = 0) = 0;

  virtual coeff averageColor (int fromY = 0, int fromX = 0,
                              int toY = -1, int toX = -1);

  virtual unsigned char *toPixmap (clrmodel cmodel);

  inline int rows (void) const { return m_images[0]->rows (); }
  inline int cols (void) const { return m_images[0]->cols (); }
  inline int size (void) const { return m_images[0]->size (); }

protected:
  /* The way the current image's colors are encoded. */
  clrmodel m_cmodel;
  int m_xsize;
  int m_ysize;
  int m_xysize;
  int m_colors;
  Image **m_images;
  bool m_isReference;
  void init (int colors, clrmodel cmodel = cm_rgb);
  virtual void destroy (void);
  virtual void valadjust (void);
}; /* class ColorBuffer */

#endif /* COLOR_BUFFER_HH__ */