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