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