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Diffstat (limited to 'src/pdflib/font/ft_font.h')
| -rw-r--r-- | src/pdflib/font/ft_font.h | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/pdflib/font/ft_font.h b/src/pdflib/font/ft_font.h new file mode 100644 index 0000000..34f2a0b --- /dev/null +++ b/src/pdflib/font/ft_font.h @@ -0,0 +1,267 @@ +/*---------------------------------------------------------------------------* + | PDFlib - A library for generating PDF on the fly | + +---------------------------------------------------------------------------+ + | Copyright (c) 1997-2006 Thomas Merz and PDFlib GmbH. All rights reserved. | + +---------------------------------------------------------------------------+ + | | + | This software is subject to the PDFlib license. It is NOT in the | + | public domain. Extended versions and commercial licenses are | + | available, please check http://www.pdflib.com. | + | | + *---------------------------------------------------------------------------*/ + +/* $Id: ft_font.h,v 1.1 2008/10/17 06:10:43 scuri Exp $ + * + * Header file for font handling + * + */ + +#ifndef FT_FONT_H +#define FT_FONT_H + +#include "pc_util.h" +#include "pc_geom.h" +#include "pc_file.h" +#include "ft_cid.h" + +#define FNT_DEFAULT_WIDTH 250 /* some reasonable default */ +#define FNT_DEFAULT_CIDWIDTH 1000 /* for CID fonts */ +#define FNT_MISSING_WIDTH -1234567890 /* missing width value */ + +#define FNT_DEFAULT_UNDERLINEWIDTH 50 /* default value of underlineThickness*/ + +#define FNT_MAX_METRICS 2048.0 /* maximal font metrics value */ + +/* + * these are the font weight values of Microsoft + * see LOGFONT structure member lfWeight + */ +#define FNT_FW_DONTCARE 0 +#define FNT_FW_THIN 100 +#define FNT_FW_EXTRALIGHT 200 +#define FNT_FW_ULTRALIGHT 200 +#define FNT_FW_LIGHT 300 +#define FNT_FW_NORMAL 400 +#define FNT_FW_REGULAR 400 +#define FNT_FW_MEDIUM 500 +#define FNT_FW_SEMIBOLD 600 +#define FNT_FW_DEMIBOLD 600 +#define FNT_FW_BOLD 700 +#define FNT_FW_EXTRABOLD 800 +#define FNT_FW_ULTRABOLD 800 +#define FNT_FW_HEAVY 900 +#define FNT_FW_BLACK 900 + +/* + * these defaults are used when the stem value + * must be derived from the name (unused) + */ +#define FNT_STEMV_MIN 50 /* minimum StemV value */ +#define FNT_STEMV_LIGHT 71 /* light StemV value */ +#define FNT_STEMV_NORMAL 109 /* normal StemV value */ +#define FNT_STEMV_MEDIUM 125 /* mediumbold StemV value */ +#define FNT_STEMV_SEMIBOLD 135 /* semibold StemV value */ +#define FNT_STEMV_BOLD 165 /* bold StemV value */ +#define FNT_STEMV_EXTRABOLD 201 /* extrabold StemV value */ +#define FNT_STEMV_BLACK 241 /* black StemV value */ + +/* + * Bit positions for the font descriptor flag + */ +#define FNT_FIXEDWIDTH (long) (1L<<0) +#define FNT_SERIF (long) (1L<<1) +#define FNT_SYMBOL (long) (1L<<2) +#define FNT_SCRIPT (long) (1L<<3) +#define FNT_ADOBESTANDARD (long) (1L<<5) +#define FNT_ITALIC (long) (1L<<6) +#define FNT_SMALLCAPS (long) (1L<<17) +#define FNT_FORCEBOLD (long) (1L<<18) + +#define FNT_DEF_ITALICANGLE -12 /* default italic angle */ +#define FNT_MISSING_FONTVAL PDC_SHRT_MIN /* missing font value */ + +/* start sequence of PFA files */ +#define FNT_PFA_STARTSEQU "%!PS" + +/* Font types */ +typedef enum +{ + fnt_Type0, /* Type0 fonts */ + fnt_Type1, /* Type1 fonts */ + fnt_MMType1, /* Multiple master fonts */ + fnt_TrueType, /* TrueType fonts for 1-byte encoding */ + fnt_CIDFontType2, /* TrueType fonts for 2-byte encoding */ + fnt_Type1C, /* CFF PostScript fonts for 1-byte encoding */ + fnt_CIDFontType0, /* OpenType fonts with CFF_ table for 2-byte encoding */ + fnt_CIDFontType0C, /* CFF PostScript fonts for 2-byte encoding */ + fnt_OpenType, /* OpenType fonts for 1-byte encoding */ + fnt_OpenTypeC, /* OpenType fonts for 2-byte encoding */ + fnt_Type3, /* Type3 fonts */ + fnt_unknownType /* for initialization only */ +} +fnt_fonttype; + +/* Font styles */ +typedef enum +{ + fnt_Normal, + fnt_Bold, + fnt_Italic, + fnt_BoldItalic +} +fnt_fontstyle; + +typedef struct fnt_interwidth_s fnt_interwidth; +typedef struct fnt_interwidth4_s fnt_interwidth4; +typedef struct fnt_glyphwidth_s fnt_glyphwidth; +typedef struct fnt_font_metric_s fnt_font_metric; +typedef struct fnt_font_s fnt_font; + +/* Code interval for glyph width */ +struct fnt_interwidth_s +{ + pdc_ushort startcode; /* start code of interval */ + pdc_short width; /* width of glyphs in the code interval */ +}; + +struct fnt_interwidth4_s +{ + int startcode; /* start UTF-32 Unicode of interval */ + pdc_short width; /* width of glyphs in the code interval */ +}; + +/* Code and Unicode for glyph width */ +struct fnt_glyphwidth_s +{ + pdc_ushort unicode; /* UTF-16 Unicode of glyph */ + pdc_short code; /* builtin 8-bit code */ + pdc_short width; /* glyph width */ +}; + + +/* Font metric exchange structure */ +struct fnt_font_metric_s +{ + char *name; /* font name (/FontName) */ + pdc_ulong flags; /* font flags of font descriptor */ + fnt_fonttype type; /* type of font */ + int charcoll; /* supported CID character collection */ + /* < 0: Halfwidth Latin-1 character */ + /* font metric */ + pdc_scalar italicAngle; /* AFM key: ItalicAngle */ + int isFixedPitch; /* AFM key: IsFixedPitch */ + pdc_scalar llx; /* AFM key: FontBBox */ + pdc_scalar lly; /* AFM key: FontBBox */ + pdc_scalar urx; /* AFM key: FontBBox */ + pdc_scalar ury; /* AFM key: FontBBox */ + int underlinePosition; /* AFM key: UnderlinePosition */ + int underlineThickness; /* AFM key: UnderlineThickness */ + int capHeight; /* AFM key: CapHeight */ + int xHeight; /* AFM key: XHeight */ + int ascender; /* AFM key: Ascender */ + int descender; /* AFM key: Descender */ + int StdVW; /* AFM key: StdVW */ + int StdHW; /* AFM key: StdHW */ + + /* glyph widths */ + int defwidth; /* default width */ + int numwidths; /* number of entries in widths */ + int *widths; /* ptr to glyph widths (enumerated by codes) */ + int numinters; /* number of entries in ciw */ + fnt_interwidth *ciw; /* ptr to code intervals for widths array */ + int numglwidths; /* number of entries in glw */ + fnt_glyphwidth *glw; /* ptr to glyph widths array */ + + +}; + +/* Font exchange structure */ +struct fnt_font_s +{ + char *name; /* font name (/BaseFont or /Name or 'font_#') */ + char *utf8name; /* UTF-8 encoded font name (maybe with BOM) */ + char *filename; /* font file name */ + + fnt_font_metric m; /* name, type, flags, charcoll and metric */ + pdc_bool isstdfont; /* is an incore font + * or standard CJK font in pdflib */ + pdc_bool ishostfont; /* is an host font */ + pdc_bool hasdescr; /* has font descriptor */ + pdc_bool vertical; /* vertical writing mode */ + + pdc_ushort spacechar; /* code of space character depending on enc */ + int spacewidth; /* width of space character */ + int linegap; /* OpenType lineGap */ + int weight; /* font weight value 0-1000 */ + + pdc_matrix matrix; /* Type3 font matrix */ + pdc_rectangle bbox; /* Type3 font bounding box */ + pdc_scalar fsscale; /* Type3 fontsize scaling */ + + pdc_bool issymbfont; /* is a symbol font */ + pdc_encoding enc; /* font encoding shortcut */ + + int numglyphs; /* number of glyphs */ + int numcodes; /* number of codes */ + + pdc_ushort *gid2code; /* mapping glyph ID -> [Uni]code or NULL */ + pdc_ushort *code2gid; /* mapping [Uni]code -> glyph ID or NULL */ + char *cmapname; /* CID CMap name */ + + + /* font in memory */ + pdc_bool embedded; /* embedded font */ + char *imgname; /* name of virtual file containing *img */ + size_t filelen; /* length of (uncompressed) font data */ + pdc_byte *img; /* font (or CFF table) data */ + +}; + +/* font error numbers. +*/ +enum +{ +#define fnt_genNames 1 +#include "ft_generr.h" + + FNT_E_dummy +}; + +/* ft_font.c */ +void fnt_register_errtab(pdc_core *pdc); +void fnt_init_font(fnt_font *font); +void fnt_cleanup_font(pdc_core *pdc, fnt_font *font); +void fnt_cleanup_fontimg(pdc_core *pdc, fnt_font *font); +int fnt_get_glyphid(int code, fnt_font *font); +int fnt_get_code(int gid, fnt_font *font); +int fnt_get_glyphwidth(int code, fnt_font *font); +int fnt_get_pdf_fonttype_code(const char *typenam); +const char *fnt_get_pdf_fonttype_name(int typecode); +const char *fnt_get_pdf_fonttype_desc(int typecode); +pdc_encodingvector *fnt_create_font_ev(pdc_core *pdc, fnt_font *font); +int fnt_check_weight(int weight); +int fnt_weightname2weight(const char *weightname); +int fnt_stemv2weight(int stemv); +const char *fnt_weight2weightname(int weight); +int fnt_macfontstyle2weight(int macfontstyle); +int fnt_weight2stemv(int weight); +void fnt_font_logg_widths(pdc_core *pdc, fnt_font *font); +void fnt_font_logg_protocol(pdc_core *pdc, fnt_font *font); + +/* ft_corefont.c */ +pdc_bool fnt_is_standard_font(const char *fontname); +const char *fnt_get_abb_std_fontname(const char *fontname); +void fnt_fill_font_metric(pdc_core *pdc, fnt_font *font, pdc_bool kerning, + const fnt_font_metric *metric); +const fnt_font_metric *fnt_get_core_metric(const char *fontname); +const char *fnt_get_abb_cjk_fontname(const char *fontname); +int fnt_get_preinstalled_cidfont(const char *fontname, + const fnt_font_metric **fontmetric); +const char **fnt_get_cid_widths_array(pdc_core *pdc, fnt_font *font); + + +/* ft_type1.c */ +pdc_bool fnt_test_type1_font(pdc_core *pdc, const pdc_byte *img); +pdc_bool fnt_get_type1_encoding(pdc_core *pdc, fnt_font *font, int glyphflags); + +#endif /* FT_FONT_H */ |