116 lines
3.1 KiB
C++
116 lines
3.1 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_HVAR_TABLE_HH
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#define HB_OT_VAR_HVAR_TABLE_HH
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#include "hb-ot-layout-common-private.hh"
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namespace OT {
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struct DeltaSetIndexMap
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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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c->check_array (this, 1, 12));
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}
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USHORT x;
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public:
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DEFINE_SIZE_STATIC (2);
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};
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/*
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* HVAR -- The Horizontal Metrics Variations Table
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* VVAR -- The Vertical Metrics Variations Table
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*/
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#define HB_OT_TAG_HVAR HB_TAG('H','V','A','R')
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#define HB_OT_TAG_VVAR HB_TAG('V','V','A','R')
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struct HVARVVAR
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{
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static const hb_tag_t HVARTag = HB_OT_TAG_hmtx;
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static const hb_tag_t VVARTag = HB_OT_TAG_vmtx;
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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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varStore.sanitize (c, this) &&
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advMap.sanitize (c, this) &&
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lsbMap.sanitize (c, this) &&
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rsbMap.sanitize (c, this));
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}
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protected:
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FixedVersion<>version; /* Version of the metrics variation table
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* initially set to 0x00010000u */
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LOffsetTo<VariationStore>
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varStore; /* Offset to item variation store table. */
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LOffsetTo<DeltaSetIndexMap>
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advMap; /* Offset to advance var-idx mapping. */
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LOffsetTo<DeltaSetIndexMap>
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lsbMap; /* Offset to lsb/tsb var-idx mapping. */
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LOffsetTo<DeltaSetIndexMap>
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rsbMap; /* Offset to rsb/bsb var-idx mapping. */
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public:
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DEFINE_SIZE_STATIC (20);
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};
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struct HVAR : HVARVVAR {
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static const hb_tag_t tableTag = HB_OT_TAG_HVAR;
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};
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struct VVAR : HVARVVAR {
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static const hb_tag_t tableTag = HB_OT_TAG_VVAR;
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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 (static_cast<const HVARVVAR *> (this)->sanitize (c) &&
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vorgMap.sanitize (c, this));
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}
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protected:
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LOffsetTo<DeltaSetIndexMap>
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vorgMap; /* Offset to vertical-origin var-idx mapping. */
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public:
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DEFINE_SIZE_STATIC (24);
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};
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} /* namespace OT */
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#endif /* HB_OT_VAR_HVAR_TABLE_HH */
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