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[aat/fmtx] Implement the table parsing (#910)

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Ebrahim Byagowi 2018-03-25 23:56:02 +04:30 committed by GitHub
parent 1d3f4f8351
commit 9eee38a55c
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3 changed files with 70 additions and 2 deletions
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67
src/hb-aat-layout-fmtx-table.hh Normal file
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@ -0,0 +1,67 @@
/*
* 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_LAYOUT_FMTX_TABLE_HH
#define HB_AAT_LAYOUT_FMTX_TABLE_HH
#include "hb-aat-layout-common-private.hh"
#define HB_AAT_TAG_FMTX HB_TAG('f','m','t','x')
namespace AAT {
/*
* fmtx -- Font Metrics
*/
struct fmtx
{
static const hb_tag_t tableTag = HB_AAT_TAG_FMTX;
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
FixedVersion<>version; /* Version (set to 0x00020000). */
HBUINT32 glyphIndex; /* The glyph whose points represent the metrics. */
HBUINT8 horizontalBefore; /* Point number for the horizontal ascent. */
HBUINT8 horizontalAfter; /* Point number for the horizontal descent. */
HBUINT8 horizontalCaretHead; /* Point number for the horizontal caret head. */
HBUINT8 horizontalCaretBase; /* Point number for the horizontal caret base. */
HBUINT8 verticalBefore; /* Point number for the vertical ascent. */
HBUINT8 verticalAfter; /* Point number for the vertical descent. */
HBUINT8 verticalCaretHead; /* Point number for the vertical caret head. */
HBUINT8 verticalCaretBase; /* Point number for the vertical caret base. */
public:
DEFINE_SIZE_STATIC (16);
};
} /* namespace AAT */
#endif /* HB_AAT_LAYOUT_FMTX_TABLE_HH */

4
src/hb-aat-layout-trak-table.hh
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@ -31,7 +31,7 @@
#include "hb-aat-layout-common-private.hh" #include "hb-aat-layout-common-private.hh"
#include "hb-open-type-private.hh" #include "hb-open-type-private.hh"
#define HB_AAT_TAG_trak HB_TAG('t','r','a','k') #define HB_AAT_TAG_TRAK HB_TAG('t','r','a','k')
namespace AAT { namespace AAT {
@ -135,7 +135,7 @@ struct TrackData
struct trak struct trak
{ {
static const hb_tag_t tableTag = HB_AAT_TAG_trak; static const hb_tag_t tableTag = HB_AAT_TAG_TRAK;
inline bool sanitize (hb_sanitize_context_t *c) const inline bool sanitize (hb_sanitize_context_t *c) const
{ {

1
src/hb-aat-layout.cc
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@ -31,6 +31,7 @@
#include "hb-aat-layout-private.hh" #include "hb-aat-layout-private.hh"
#include "hb-aat-layout-ankr-table.hh" #include "hb-aat-layout-ankr-table.hh"
#include "hb-aat-layout-fmtx-table.hh" // Just so we compile it; unused otherwise.
#include "hb-aat-layout-kerx-table.hh" #include "hb-aat-layout-kerx-table.hh"
#include "hb-aat-layout-morx-table.hh" #include "hb-aat-layout-morx-table.hh"
#include "hb-aat-layout-trak-table.hh" #include "hb-aat-layout-trak-table.hh"