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/* Copyright (C) 1989, 2000 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: ifont.h,v 1.14 2004/08/04 19:36:12 stefan Exp $ */
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/* Interpreter internal font representation */
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#ifndef ifont_INCLUDED
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# define ifont_INCLUDED
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#include "gsccode.h" /* for gs_glyph, NUM_KNOWN_ENCODINGS */
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#include "gsstype.h" /* for extern_st */
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/* The external definition of fonts is given in the PostScript manual, */
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/* pp. 91-93. */
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/* The structure given below is 'client data' from the viewpoint */
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/* of the library. font-type objects (t_struct/st_font, "t_fontID") */
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/* point directly to a gs_font. */
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typedef struct font_data_s {
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ref dict; /* font dictionary object */
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ref BuildChar;
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ref BuildGlyph;
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ref Encoding;
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ref CharStrings;
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ref GlyphNames2Unicode;
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union _fs {
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struct _f1 {
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ref OtherSubrs; /* from Private dictionary */
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ref Subrs; /* from Private dictionary */
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ref GlobalSubrs; /* from Private dictionary, */
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/* for Type 2 charstrings */
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} type1;
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struct _f42 {
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ref sfnts;
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ref CIDMap; /* for CIDFontType 2 fonts */
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ref GlyphDirectory;
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} type42;
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struct _fc0 {
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ref GlyphDirectory;
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ref GlyphData; /* (if preloaded) string or array of strings */
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ref DataSource; /* (if not preloaded) reusable stream */
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} cid0;
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} u;
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} font_data;
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/*
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* Even though the interpreter's part of the font data actually
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* consists of refs, allocating it as refs tends to create sandbars;
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* since it is always allocated and freed as a unit, we can treat it
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* as an ordinary structure.
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*/
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/* st_font_data is exported for zdefault_make_font in zfont.c. */
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extern_st(st_font_data);
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#define public_st_font_data() /* in zbfont.c */\
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gs_public_st_ref_struct(st_font_data, font_data, "font_data")
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#define pfont_data(pfont) ((font_data *)((pfont)->client_data))
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#define pfont_dict(pfont) (&pfont_data(pfont)->dict)
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/* ================Internal procedures shared across files ================ */
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/* ---------------- Exported by zchar.c ---------------- */
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/*
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* Get the FontBBox from a font dictionary, if any; if none, or if invalid,
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* return 4 zeros.
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*/
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int font_bbox_param(const gs_memory_t *mem, const ref *pfdict, double bbox[4]);
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/* ---------------- Exported by zfont.c ---------------- */
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#ifndef gs_font_DEFINED
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# define gs_font_DEFINED
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typedef struct gs_font_s gs_font;
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#endif
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/*
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* Check a parameter that should be a valid font dictionary, and return
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* the gs_font stored in its FID entry.
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*/
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int font_param(const ref * pfdict, gs_font ** ppfont);
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/*
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* Mark a glyph as a PostScript name (if it isn't a CID) for the garbage
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* collector. Return true if a mark was just added. This procedure is
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* intended to be used as the mark_glyph procedure in the character cache.
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*/
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bool zfont_mark_glyph_name(const gs_memory_t *mem, gs_glyph glyph, void *ignore_data);
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/*
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* Return information about a font, including information from the FontInfo
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* dictionary. This procedure is intended to be used as the font_info
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* procedure in all PostScript fonts.
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*/
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font_proc_font_info(zfont_info);
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#endif /* ifont_INCLUDED */
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