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|
/*---------------------------------------------------------------------------*
| 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: p_font.h,v 1.1 2008/10/17 06:11:49 scuri Exp $
*
* Header file for the PDFlib font subsystem
*
*/
#ifndef P_FONT_H
#define P_FONT_H
#define PDF_DEFAULT_CHAR PDC_UNICODE_SPACE
/* internal maximal length of fontnames */
#define PDF_MAX_FONTNAME 128
/* last text rendering mode number */
#define PDF_LAST_TRMODE 7
/* minimal number of glyphs for appropriate encoding */
#define PDF_MIN_GLYPHS 5
typedef enum
{
font_ascender = (1<<0),
font_descender = (1<<1),
font_capheight = (1<<2),
font_xheight = (1<<3),
font_linegap = (1<<4),
font_italic = (1<<8),
font_bold = (1<<9)
}
pdf_font_values;
typedef struct pdf_t3glyph_s pdf_t3glyph;
/* font options */
struct pdf_font_options_s
{
pdc_bool embedding;
char *encoding;
int flags;
char *fontname;
fnt_fontstyle fontstyle;
pdc_bool fontwarning;
int mask;
int monospace;
int ascender;
int descender;
int capheight;
int xheight;
int linegap;
pdc_bool auxiliary;
};
/* Type3 font structures */
struct pdf_t3glyph_s
{
char *name;
pdc_id charproc_id;
pdc_scalar wx;
pdc_scalar llx;
pdc_scalar lly;
pdc_scalar urx;
pdc_scalar ury;
pdc_scalar width;
int pass; /* 0, 1, 2 */
};
struct pdf_t3font_s
{
pdf_t3glyph *glyphs; /* dynamically growing glyph table */
int capacity; /* current number of slots */
int next_glyph; /* next available slot */
int curr_glyph; /* slot of current glyph */
pdc_id charprocs_id; /* id of /CharProcs dict */
pdc_id res_id; /* id of /Resources dict */
pdc_bool colorized; /* glyphs colorized */
int pass; /* 0, 1, 2 */
};
/* pdflib font structure */
struct pdf_font_s
{
/* pdcore font structure */
fnt_font ft;
/* font options */
pdf_font_options opt; /* pdflib font options */
pdc_bool verbose; /* put out warning/error messages */
/* special font names */
char *apiname; /* font name specified in API call */
const char *filename; /* name of font file, copy of ft.filename */
char *metricfilename; /* name of metric font file */
/* font control */
pdc_bool used_in_formfield; /* this font is in use in form field */
pdc_bool used_in_current_doc; /* this font is in use in current doc. */
pdc_bool used_on_current_page; /* this font is in use on current page */
pdc_id obj_id; /* object id of this font */
/* CFF table */
long cff_offset; /* start of CFF table in font */
size_t cff_length; /* length of CFF table in font */
/* Type3 font */
pdf_t3font *t3font; /* Type3 font data */
pdc_bool hasoriginal; /* has the original Type3 font data */
/* pdflib encoding and CMap properties */
char *encapiname; /* encoding name specified in API call */
char *outcmapname; /* output CMap namel */
int codepage; /* OEM multi byte code-page number */
pdc_encoding towinansi; /* convert to 'towinansi' enc. for output */
pdc_bool hasnomac; /* TT font has no macroman cmap */
pdc_bool passthrough; /* text will be passed through as is */
pdc_bool unibyte; /* take Unicode encoding as byte encoding */
pdc_bool asciispace; /* encoding has space at x20 */
pdc_bool issemantic; /* encoding is Unicode interpretable */
pdc_bool widthsmissing; /* GID widths not available */
pdc_ulong missingglyphs; /* bit mask for missing new AGL glyphs */
int metricflags; /* flags for faked font values */
int supplement; /* supplement number of CMap
* = -1: Identity-H/V */
pdc_encoding symenc; /* font encoding for symbol fonts */
int replacementchar; /* replacement character */
int replacementcode; /* replacement code or glyph id resp. */
/* encoding and glyph control */
int codesize; /* code size */
/* = 0: unknown, no Unicode CMap */
/* = 1: 1 byte encoding */
/* = 2: 2 byte encoding */
int lastcode; /* AFM: last byte code for generating runtime */
/* byte encoding. = -1: ignore */
int gid0code; /* code für gid 0 (because of Type3 fonts) */
pdc_byte *usedgids; /* used Glyph IDs for font subsetting */
pdc_bool expectglyphs; /* TT: glyph id text strings are expected */
pdc_bool iscidfont; /* is CID font */
};
/* p_truetype.c */
pdc_bool pdf_get_metrics_tt(PDF *p, pdf_font *font,
const char *fontname, pdc_encoding enc,
const char *filename);
int pdf_check_tt_hostfont(PDF *p, const char *hostname);
/* p_afm.c */
pdc_bool pdf_process_metrics_data(PDF *p, pdf_font *font,
const char *fontname);
pdc_bool pdf_get_metrics_afm(PDF *p, pdf_font *font,
const char *fontname, pdc_encoding enc,
const char *filename, pdc_bool requested);
/* p_pfm.c */
pdc_bool pdf_check_pfm_encoding(PDF *p, pdf_font *font,
pdc_encoding enc);
pdc_bool pdf_get_metrics_pfm(PDF *p, pdf_font *font,
const char *fontname, pdc_encoding enc,
const char *filename, pdc_bool requested);
/* p_cid.c */
pdc_bool pdf_handle_cidfont(PDF *p, const char *fontname,
const char *encoding, pdc_encoding enc, pdf_font *font, int *o_slot,
pdc_encoding *newenc);
void pdf_put_cidglyph_widths(PDF *p, pdf_font *font);
/* p_font.c */
void pdf_get_page_fonts(PDF *p, pdf_reslist *rl);
void pdf_parse_font_options(PDF *p, const char *optlist);
double pdf_get_font_float_option(PDF *p, pdf_font_optflags fflags);
pdc_bool pdf_check_font_embedding(PDF *p, pdf_font *font, const char *fontname);
pdc_bool pdf_make_fontflag(PDF *p, pdf_font *font);
int pdf_get_code_or_glyphid(PDF *p, pdf_font *font, pdc_encodingvector *ev,
pdc_ushort uv);
void pdf_set_replchar(PDF *p, pdf_font *font);
void pdf_font_issemantic(PDF *p, pdf_font *font);
void pdf_font_set_missvalues(PDF *p, pdf_font *font);
pdc_bool pdf_font_get_is_faked(pdf_font *font, pdf_font_values flag);
double pdf_font_get_metric_value(int value);
const char *pdf_get_encoding_name(PDF *p, pdc_encoding enc, pdf_font *font);
const char *pdf_get_font_char_option(PDF *p, pdf_font_optflags fflags);
const char *pdf_get_pdf_fontname(pdf_font *font);
char *pdf_get_encoding_adaptname(PDF *p, pdc_encoding enc, pdf_font *font,
const char *fontname);
pdc_encodingvector *pdf_create_font_encoding(PDF *p, pdc_encoding enc,
pdf_font *font, const char *fontname, pdc_bool kreg);
void pdf_transform_fontwidths(PDF *p, pdf_font *font,
pdc_encodingvector *evto, pdc_encodingvector *evfrom);
/* p_type1.c */
pdc_bool pdf_t1open_fontfile(PDF *p, pdf_font *font, const char *fontname,
PDF_data_source *t1src, pdc_bool requested);
pdc_bool pdf_make_t1src(PDF *p, pdf_font *font, PDF_data_source *t1src);
void pdf_put_length_objs(PDF *p, PDF_data_source *t1src,
pdc_id length1_id, pdc_id length2_id, pdc_id length3_id);
/* p_type3.c */
void pdf_cleanup_t3font(PDF *p, pdf_t3font *t3font);
void pdf_init_type3(PDF *p);
pdc_bool pdf_handle_t3font(PDF *p, const char *fontname, pdc_encoding enc,
pdf_font *font, int *slot);
pdc_bool pdf_isvalid_font(PDF *p, int slot);
/* p_subsett.c */
int pdf_prepare_ttfont(PDF *p, pdf_font *font);
#endif /* P_FONT_H */
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