134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
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/*
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* Copyright © 2017 Google, Inc.
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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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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef HB_OT_VAR_FVAR_TABLE_HH
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#define HB_OT_VAR_FVAR_TABLE_HH
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#include "hb-open-type-private.hh"
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#include "hb-ot-var.h"
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namespace OT {
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struct InstanceRecord
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{
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inline bool sanitize (hb_sanitize_context_t *c, unsigned int axis_count) 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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c->check_array (coordinates, coordinates[0].static_size, axis_count));
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}
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protected:
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USHORT subfamilyNameID;/* The name ID for entries in the 'name' table
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* that provide subfamily names for this instance. */
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USHORT reserved; /* Reserved for future use — set to 0. */
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Fixed coordinates[VAR];/* The coordinates array for this instance. */
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//USHORT postScriptNameIDX;/*Optional. The name ID for entries in the 'name'
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// * table that provide PostScript names for this
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// * instance. */
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public:
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DEFINE_SIZE_ARRAY (4, coordinates);
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};
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struct AxisRecord
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{
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inline 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 axisTag; /* Tag identifying the design variation for the axis. */
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Fixed minValue; /* The minimum coordinate value for the axis. */
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Fixed defaultValue; /* The default coordinate value for the axis. */
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Fixed maxValue; /* The maximum coordinate value for the axis. */
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USHORT reserved; /* Reserved for future use — set to 0. */
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USHORT axisNameID; /* The name ID for entries in the 'name' table that
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* provide a display name for this axis. */
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public:
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DEFINE_SIZE_STATIC (20);
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};
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/*
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* fvar — Font Variations Table
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*/
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struct fvar
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{
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static const hb_tag_t tableTag = HB_OT_TAG_fvar;
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inline 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 (version.sanitize (c) &&
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likely (version.major == 1) /*&&
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mathConstants.sanitize (c, this) &&
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mathGlyphInfo.sanitize (c, this) &&
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mathVariants.sanitize (c, this)*/);
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}
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#if 0
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inline hb_position_t get_constant (hb_ot_math_constant_t constant,
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hb_font_t *font) const
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{ return (this+mathConstants).get_value (constant, font); }
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inline const MathGlyphInfo &get_math_glyph_info (void) const
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{ return this+mathGlyphInfo; }
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inline const MathVariants &get_math_variants (void) const
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{ return this+mathVariants; }
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#endif
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protected:
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FixedVersion<>version; /* Version of the fvar table
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* initially set to 0x00010000u */
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Offset<> things; /* Offset in bytes from the beginning of the table
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* to the start of the AxisRecord array. */
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USHORT reserved; /* This field is permanently reserved. Set to 2. */
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USHORT axisCount; /* The number of variation axes in the font (the
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* number of records in the axes array). */
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USHORT axisSize; /* The size in bytes of each VariationAxisRecord —
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* set to 20 (0x0014) for this version. */
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USHORT instanceCount; /* The number of named instances defined in the font
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* (the number of records in the instances array). */
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USHORT instanceSize; /* The size in bytes of each InstanceRecord — set
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* to either axisCount * sizeof(Fixed) + 4, or to
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* axisCount * sizeof(Fixed) + 6. */
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public:
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DEFINE_SIZE_STATIC (16);
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};
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} /* namespace OT */
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#endif /* HB_OT_VAR_FVAR_TABLE_HH */
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