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Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-aat-fdsc-table.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-aat-fdsc-table.hh | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-aat-fdsc-table.hh b/src/3rdparty/harfbuzz-ng/src/hb-aat-fdsc-table.hh new file mode 100644 index 0000000000..604d5bcf05 --- /dev/null +++ b/src/3rdparty/harfbuzz-ng/src/hb-aat-fdsc-table.hh @@ -0,0 +1,126 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HB_AAT_FDSC_TABLE_HH +#define HB_AAT_FDSC_TABLE_HH + +#include "hb-aat-layout-common.hh" +#include "hb-open-type.hh" + +/* + * fdsc -- Font descriptors + * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6fdsc.html + */ +#define HB_AAT_TAG_fdsc HB_TAG('f','d','s','c') + + +namespace AAT { + + +struct FontDescriptor +{ + bool has_data () const { return tag; } + + int cmp (hb_tag_t a) const { return tag.cmp (a); } + + float get_value () const { return u.value.to_float (); } + + enum non_alphabetic_value_t { + Alphabetic = 0, + Dingbats = 1, + PiCharacters = 2, + Fleurons = 3, + DecorativeBorders = 4, + InternationalSymbols= 5, + MathSymbols = 6 + }; + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + protected: + Tag tag; /* The 4-byte table tag name. */ + union { + HBFixed value; /* The value for the descriptor tag. */ + HBUINT32 nalfType; /* If the tag is `nalf`, see non_alphabetic_value_t */ + } u; + public: + DEFINE_SIZE_STATIC (8); +}; + +struct fdsc +{ + static constexpr hb_tag_t tableTag = HB_AAT_TAG_fdsc; + + enum { + Weight = HB_TAG ('w','g','h','t'), + /* Percent weight relative to regular weight. + * (defaul value: 1.0) */ + Width = HB_TAG ('w','d','t','h'), + /* Percent width relative to regular width. + * (default value: 1.0) */ + Slant = HB_TAG ('s','l','n','t'), + /* Angle of slant in degrees, where positive + * is clockwise from straight up. + * (default value: 0.0) */ + OpticalSize = HB_TAG ('o','p','s','z'), + /* Point size the font was designed for. + * (default value: 12.0) */ + NonAlphabetic= HB_TAG ('n','a','l','f') + /* These values are treated as integers, + * not fixed32s. 0 means alphabetic, and greater + * integers mean the font is non-alphabetic (e.g. symbols). + * (default value: 0) */ + }; + + const FontDescriptor &get_descriptor (hb_tag_t style) const + { return descriptors.lsearch (style); } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + descriptors.sanitize (c)); + } + + protected: + HBFixed version; /* Version number of the font descriptors + * table (0x00010000 for the current version). */ + LArrayOf<FontDescriptor> + descriptors; /* List of tagged-coordinate pairs style descriptors + * that will be included to characterize this font. + * Each descriptor consists of a <tag, value> pair. + * These pairs are located in the gxFontDescriptor + * array that follows. */ + public: + DEFINE_SIZE_ARRAY (8, descriptors); +}; + +} /* namespace AAT */ + + +#endif /* HB_AAT_FDSC_TABLE_HH */ |