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2 mjames 1 
// font class library
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#pragma once
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class font_t
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{
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public:
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  font_t (int const height, int const width, char const * data) :
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      m_height (height), m_width (width), m_data(data)
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  {
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  }
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  virtual char
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  getPixel (char c, int x, int y) =0 ;
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  // character width
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  int
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  width ()
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  {
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    return m_width;
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  }
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  // character height
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  int
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  height ()
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  {
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    return m_height;
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  }
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protected:
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  int const m_height;
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  int const m_width;
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  char const *m_data;
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};
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class font5x7_t : public font_t
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{
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public:
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  font5x7_t (char const *data) :
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      font_t (7, 5, data)
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  {
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  }
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  ;
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 char
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  getPixel (char c, int x, int y) override;
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};
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class font10x18_t : public font_t
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{
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public:
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  font10x18_t (char const *data) :
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      font_t (18, 10,data)
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  {
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  }
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  ;
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  char
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  getPixel (char c, int x, int y) override;
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};
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// defined fonts
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// original 5x7
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extern font5x7_t small_font;
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// lucida font
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// in 10x18
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extern font10x18_t large_font;