core/src/ttf.h

   1 #ifndef _TTF_H
   2 #define _TTF_H
   3 #include <ft2build.h>
   4 #include <freetype/ftoutln.h>
   5 #include <freetype/ttnameid.h>
   6
   7 #define CACHED_METRICS  0x10
   8 #define CACHED_BITMAP   0x01
   9 #define CACHED_PIXMAP   0x02
  10
  11 #define TTF_STYLE_NORMAL        0x00
  12 #define TTF_STYLE_BOLD          0x01
  13 #define TTF_STYLE_ITALIC        0x02
  14 #define TTF_STYLE_UNDERLINE     0x04
  15
  16 /* Handy routines for converting from fixed point */
  17 #define FT_FLOOR(X)     ((X & -64) / 64)
  18 #define FT_CEIL(X)      (((X + 63) & -64) / 64)
  19
  20 /* Cached glyph information */
  21 typedef struct cached_glyph {
  22         int stored;
  23         FT_UInt index;
  24         FT_Bitmap bitmap;
  25         FT_Bitmap pixmap;
  26         int minx;
  27         int maxx;
  28         int miny;
  29         int maxy;
  30         int yoffset;
  31         int advance;
  32         unsigned short cached;
  33 } c_glyph;
  34
  35 struct _TTF_Font {
  36         /* Freetype2 maintains all sorts of useful info itself */
  37         FT_Face face;
  38
  39         /* We'll cache these ourselves */
  40         int height;
  41         int ascent;
  42         int descent;
  43         int lineskip;
  44
  45         /* The font style */
  46         int style;
  47
  48         /* Extra width in glyph bounds for text styles */
  49         int glyph_overhang;
  50         float glyph_italics;
  51
  52         /* Information in the font for underlining */
  53         int underline_offset;
  54         int underline_height;
  55
  56         /* Cache for style-transformed glyphs */
  57         c_glyph *current;
  58         c_glyph cache[256];
  59         c_glyph scratch;
  60 };
  61
  62 typedef struct _TTF_Font TTF_Font;
  63
  64 int TTF_Init(void);
  65 void TTF_Quit(void);
  66
  67 struct fbspl_theme;
  68 struct text;
  69
  70 void text_render(struct fbspl_theme *theme, struct text *ct, rect *re, u8 *target);
  71 void text_prerender(struct fbspl_theme *theme, struct text *ct, bool force);
  72 void text_bnd(struct fbspl_theme *theme, struct text *ct, rect *bnd);
  73
  74 int load_fonts(struct fbspl_theme *theme);
  75 int free_fonts(struct fbspl_theme *theme);
  76
  77 #endif