/*
 *        img.h - Game image object (255 colours + transparency)
 *        AYM 2000-06-13
 */


#ifndef YH_IMG                        /* DO NOT INSERT ANYTHING BEFORE THIS LINE */
#define YH_IMG


typedef uint8_t img_pixel_t;
typedef unsigned short img_dim_t;
class Img_priv;


/* The colour number used to represent transparent pixels in an
   Img. Any value will do but zero is probably best
   performance-wise. */
const img_pixel_t IMG_TRANSP = 0;


class Img
{
    public: Img();
    Img(img_dim_t width, img_dim_t height, bool opaque);
    ~Img();
    bool is_null() const;        // Is it a null image ?
    img_dim_t width() const;        // Return the width
    img_dim_t height() const;        // Return the height
    const img_pixel_t *buf() const;        // Return pointer on buffer
    img_pixel_t *wbuf();        // Return pointer on buffer
    void clear();
    void set_opaque(bool opaque);
    void resize(img_dim_t width, img_dim_t height);
    int save(const char *filename) const;

      private: Img(const Img &);        // Too lazy to implement it
      Img & operator=(const Img &);        // Too lazy to implement it
    Img_priv *p;
};


#endif /* DO NOT ADD ANYTHING AFTER THIS LINE */