Adafruit-GFX-Library/gfxfont.h

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// Font structures for newer Adafruit_GFX (1.1 and later).
// Example fonts are included in 'Fonts' directory.
// To use a font in your Arduino sketch, #include the corresponding .h
// file and pass address of GFXfont struct to setFont(). Pass NULL to
// revert to 'classic' fixed-space bitmap font.
#ifndef _GFXFONT_H_
#define _GFXFONT_H_
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/// Font data stored PER GLYPH
typedef struct {
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uint16_t bitmapOffset; ///< Pointer into GFXfont->bitmap
uint8_t width; ///< Bitmap dimensions in pixels
uint8_t height; ///< Bitmap dimensions in pixels
uint8_t xAdvance; ///< Distance to advance cursor (x axis)
int8_t xOffset; ///< X dist from cursor pos to UL corner
int8_t yOffset; ///< Y dist from cursor pos to UL corner
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} GFXglyph;
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/// Data stored for FONT AS A WHOLE
typedef struct {
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uint8_t *bitmap; ///< Glyph bitmaps, concatenated
GFXglyph *glyph; ///< Glyph array
uint8_t first; ///< ASCII extents (first char)
uint8_t last; ///< ASCII extents (last char)
uint8_t yAdvance; ///< Newline distance (y axis)
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} GFXfont;
#endif // _GFXFONT_H_