[aat] First dig on 'trak'
This commit is contained in:
Ebrahim Byagowi
Behdad Esfahbod
parent
0bff6991de
commit
a64eacd8a6
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@ -82,8 +82,9 @@ HB_FALLBACK_sources = \
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HB_OT_sources = \
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hb-aat-layout.cc \
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hb-aat-layout-common-private.hh \
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hb-aat-layout-kerx-table.hh \
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hb-aat-layout-morx-table.hh \
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hb-aat-layout-kerx-table.hh \
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hb-aat-layout-trak-table.hh \
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hb-aat-layout-private.hh \
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hb-ot-font.cc \
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hb-ot-layout.cc \
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@ -0,0 +1,100 @@
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/*
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* Copyright © 2018 Google, Inc.
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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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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef HB_AAT_LAYOUT_TRAK_TABLE_HH
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#define HB_AAT_LAYOUT_TRAK_TABLE_HH
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#include "hb-aat-layout-common-private.hh"
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#include "hb-open-type-private.hh"
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#define HB_AAT_TAG_trak HB_TAG('t','r','a','k')
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namespace AAT {
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struct TrackTableEntry
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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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Fixed track; /* Track value for this record. */
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HBUINT16 nameIndex; /* The 'name' table index for this track */
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HBUINT16 offset; /* Offset from start of tracking table to per-size tracking values for this track. */
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public:
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DEFINE_SIZE_MIN (8);
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};
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struct TrackData
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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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HBUINT16 nTracks; /* Number of separate tracks included in this table. */
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HBUINT16 nSizes; /* Number of point sizes included in this table. */
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OffsetTo<UnsizedArrayOf<Fixed>, HBUINT32> sizeTable;
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TrackTableEntry trackTable[VAR]; /* Array[nSizes] of size values. */
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public:
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DEFINE_SIZE_MIN (8);
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};
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struct trak
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{
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static const hb_tag_t tableTag = HB_AAT_TAG_trak;
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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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FixedVersion<>version; /* Version of the tracking table--currently
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* 0x00010000u for version 1.0. */
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HBUINT16 format; /* Format of the tracking table */
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OffsetTo<TrackData, HBUINT16> horizOffset; /* TrackData for horizontal text */
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OffsetTo<TrackData, HBUINT16> vertOffset; /* TrackData for vertical text */
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HBUINT16 reserved; /* Reserved. Set to 0. */
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public:
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DEFINE_SIZE_MIN (12);
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};
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} /* namespace AAT */
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#endif /* HB_AAT_LAYOUT_TRAK_TABLE_HH */
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@ -30,8 +30,9 @@
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#include "hb-ot-layout-gsubgpos-private.hh"
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#include "hb-aat-layout-private.hh"
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#include "hb-aat-layout-kerx-table.hh"
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#include "hb-aat-layout-morx-table.hh"
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#include "hb-aat-layout-kerx-table.hh"
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#include "hb-aat-layout-trak-table.hh"
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/*
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* mort/morx
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@ -131,8 +131,9 @@ namespace OT {
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}
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namespace AAT {
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struct kerx;
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struct morx;
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struct kerx;
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struct trak;
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}
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struct hb_ot_layout_lookup_accelerator_t
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@ -170,8 +171,9 @@ struct hb_ot_layout_t
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OT::hb_lazy_table_loader_t<struct OT::MATH> math;
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OT::hb_lazy_table_loader_t<struct OT::fvar> fvar;
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OT::hb_lazy_table_loader_t<struct OT::avar> avar;
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OT::hb_lazy_table_loader_t<struct AAT::kerx> kerx;
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OT::hb_lazy_table_loader_t<struct AAT::morx> morx;
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OT::hb_lazy_table_loader_t<struct AAT::kerx> kerx;
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OT::hb_lazy_table_loader_t<struct AAT::trak> trak;
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unsigned int gsub_lookup_count;
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unsigned int gpos_lookup_count;
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