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/* Header for FreeType 2 and UTF-8 encoding support for
* DarkPlaces
*/
#ifndef DP_FREETYPE2_H__
#define DP_FREETYPE2_H__
//#include <sys/types.h>
#include "utf8lib.h"
/*
* From http://www.unicode.org/Public/UNIDATA/Blocks.txt
*
* E000..F8FF; Private Use Area
* F0000..FFFFF; Supplementary Private Use Area-A
*
* We use:
* Range E000 - E0FF
* Contains the non-FreeType2 version of characters.
*/
typedef struct ft2_font_map_s ft2_font_map_t;
typedef struct ft2_attachment_s ft2_attachment_t;
#ifdef WIN64
#define ft2_oldstyle_map ((ft2_font_map_t*)-1LL)
#else
#define ft2_oldstyle_map ((ft2_font_map_t*)-1)
#endif
typedef float ft2_kernvec[2];
typedef struct ft2_kerning_s
{
ft2_kernvec kerning[256][256]; /* kerning[left char][right char] */
} ft2_kerning_t;
typedef struct ft2_font_s
{
char name[64];
qboolean has_kerning;
// last requested size loaded using Font_SetSize
float currentw;
float currenth;
float ascend;
float descend;
qboolean image_font; // only fallbacks are freetype fonts
// TODO: clean this up and do not expose everything.
const unsigned char *data; // FT2 needs it to stay
//fs_offset_t datasize;
void *face;
// an unordered array of ordered linked lists of glyph maps for a specific size
ft2_font_map_t *font_maps[MAX_FONT_SIZES];
int num_sizes;
// attachments
size_t attachmentcount;
ft2_attachment_t *attachments;
ft2_settings_t *settings;
// fallback mechanism
struct ft2_font_s *next;
} ft2_font_t;
void Font_CloseLibrary(void);
void Font_Init(void);
qboolean Font_OpenLibrary(void);
ft2_font_t* Font_Alloc(void);
void Font_UnloadFont(ft2_font_t *font);
// IndexForSize suggests to change the width and height if a font size is in a reasonable range
// for example, you render at a size of 12.4, and a font of size 12 has been loaded
// in such a case, *outw and *outh are set to 12, which is often a good alternative size
int Font_IndexForSize(ft2_font_t *font, float size, float *outw, float *outh);
ft2_font_map_t *Font_MapForIndex(ft2_font_t *font, int index);
qboolean Font_LoadFont(const char *name, dp_font_t *dpfnt);
qboolean Font_GetKerningForSize(ft2_font_t *font, float w, float h, Uchar left, Uchar right, float *outx, float *outy);
qboolean Font_GetKerningForMap(ft2_font_t *font, int map_index, float w, float h, Uchar left, Uchar right, float *outx, float *outy);
float Font_VirtualToRealSize(float sz);
float Font_SnapTo(float val, float snapwidth);
// since this is used on a font_map_t, let's name it FontMap_*
ft2_font_map_t *FontMap_FindForChar(ft2_font_map_t *start, Uchar ch);
#endif // DP_FREETYPE2_H__
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