ft2_fontdefs.h

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#ifndef FT2_PRIVATE_H__
#define FT2_PRIVATE_H__
 
// anything should work, but I recommend multiples of 8
// since the texture size should be a power of 2
#define FONT_CHARS_PER_LINE 16
#define FONT_CHAR_LINES 16
#define FONT_CHARS_PER_MAP (FONT_CHARS_PER_LINE * FONT_CHAR_LINES)
 
// map.start value for incremental maps to hold a place
#define INCMAP_START 0x110000
 
typedef struct glyph_slot_s
{
    qbool image;
    // we keep the quad coords here only currently
    // if you need other info, make Font_LoadMapForIndex fill it into this slot
    float txmin; // texture coordinate in [0,1]
    float txmax;
    float tymin;
    float tymax;
    float vxmin;
    float vxmax;
    float vymin;
    float vymax;
    float advance_x;
    float advance_y;
} glyph_slot_t;
 
struct ft2_font_map_s
{
    Uchar  start;
    float  size;
 
    // the actual size used in the freetype code
    // by convention, the requested size is the height of the font's bounding box.
    float  intSize;
    int    glyphSize;
 
    ft2_font_map_t *next;
    cachepic_t     *pic;
    qbool           static_tex;
    glyph_slot_t    glyphs[FONT_CHARS_PER_MAP];
    Uchar           glyphchars[FONT_CHARS_PER_MAP];
 
    // saves us the trouble of calculating these over and over again
    double          sfx, sfy;
 
    // note: float width_of[256] was moved to `struct dp_font_s` as width_of_ft2
 
    // these may only present in a startmap
    // contains the kerning information for the first 256 characters
    // for the other characters, we will lookup the kerning information
    ft2_kerning_t  *kerning;
    // for accessing incremental maps for bigblock glyphs
    font_incmap_t  *incmap;
};
 
struct font_incmap_s
{
    // associated fontmap; startmap of incmaps
    struct ft2_font_map_s *fontmap;
    int charcount;
    int newmap_start;
 
    // two rounds of merge will take place, keep those data until then
    unsigned char *data_tier1[FONT_CHARS_PER_LINE];
    unsigned char *data_tier2[FONT_CHAR_LINES];
 
    // count of merged maps
    int tier1_merged, tier2_merged;
};
 
struct ft2_attachment_s
{
    const unsigned char *data;
    fs_offset_t          size;
};
 
//qbool Font_LoadMapForIndex(ft2_font_t *font, Uchar _ch, ft2_font_map_t **outmap);
qbool Font_LoadMapForIndex(ft2_font_t *font, int map_index, Uchar _ch, ft2_font_map_t **outmap);
 
void font_start(void);
void font_shutdown(void);
void font_newmap(void);
 
#endif // FT2_PRIVATE_H__