#include "freetype/freetype.h"#include "freetype.h" static char* fterrstr(int); char*ftnewface(char *path, int index, FTface *f, FTfaceinfo *finfo){	FT_Library ft_lib;	FT_Face ft_face;	char *err; 	err = fterrstr(FT_Init_FreeType(&ft_lib));	if (err != nil)		return err; 	err = fterrstr(FT_New_Face(ft_lib, path, index, &ft_face));	if (err != nil) {		FT_Done_FreeType(ft_lib);		return err;	} 	f->ft_lib = ft_lib;	f->ft_face = ft_face;	finfo->nfaces = ft_face->num_faces;	finfo->index = ft_face->face_index;	finfo->style = ft_face->style_flags;	finfo->height = (FT_MulFix(ft_face->height, ft_face->size->metrics.y_scale)+32)/64;	finfo->ascent = (FT_MulFix(ft_face->ascender, ft_face->size->metrics.y_scale)+32)/64;	finfo->familyname = ft_face->family_name;	finfo->stylename = ft_face->style_name;	return nil;} char*ftloadmemface(void *buf, int nbytes, int index, FTface *f, FTfaceinfo *finfo){	USED(buf);	USED(f);	USED(finfo);	return "not implemented";} char*ftsetcharsize(FTface f, int pt, int hdpi, int vdpi, FTfaceinfo *finfo){	FT_Face ft_face = f.ft_face;	char *err; 	err = fterrstr(FT_Set_Char_Size(ft_face, 0, pt, hdpi, vdpi));	if (err != nil)		return err;	finfo->height = (FT_MulFix(ft_face->height, ft_face->size->metrics.y_scale)+32)/64;	finfo->ascent = (FT_MulFix(ft_face->ascender, ft_face->size->metrics.y_scale)+32)/64;	return nil;} voidftsettransform(FTface f, FTmatrix *m, FTvector *v){	/* FTMatrix and FTVector are compatible with FT_Matrix and FT_Vector */	FT_Set_Transform(f.ft_face, (FT_Matrix*)m, (FT_Vector*)v);} intfthaschar(FTface f, int c){	return FT_Get_Char_Index(f.ft_face, c) != 0;} char*ftloadglyph(FTface f, int ix, FTglyph *g){	FT_Face ft_face = f.ft_face;	FT_GlyphSlot ft_glyph;	char *err; 	ix = FT_Get_Char_Index(ft_face, ix);	err = fterrstr(FT_Load_Glyph(ft_face, ix, FT_LOAD_NO_BITMAP|FT_LOAD_RENDER|FT_LOAD_CROP_BITMAP));	if (err != nil)		return err; 	ft_glyph = ft_face->glyph;	g->top = ft_glyph->bitmap_top;	g->left = ft_glyph->bitmap_left;	g->height = ft_glyph->bitmap.rows;	g->width = ft_glyph->bitmap.width;	g->advx = ft_glyph->advance.x;	g->advy = ft_glyph->advance.y;	g->bpr = ft_glyph->bitmap.pitch;	g->bitmap = ft_glyph->bitmap.buffer;	return nil;} voidftdoneface(FTface f){	if (f.ft_face != nil)		FT_Done_Face(f.ft_face);	if (f.ft_lib != nil)		FT_Done_FreeType(f.ft_lib);} /* * get the freetype error strings */ typedef struct FTerr FTerr;struct FTerr {	int		code;	char*	text;}; #define FT_NOERRORDEF_(l,c,t)#define FT_ERRORDEF_(l,c,t)	c,t, static FTerr fterrs[] = {#include "freetype/fterrdef.h"	-1, "",}; static char*fterrstr(int code){	int i;	if (code == 0)		return nil;	for (i = 0; fterrs[i].code > 0; i++) {		if (fterrs[i].code == code)			return fterrs[i].text;	}	return "unknown FreeType error";}