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/*
* 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_OT_GASP_TABLE_HH
#define HB_OT_GASP_TABLE_HH
#include "hb-open-type.hh"
#include "hb-ot-hhea-table.hh"
#include "hb-ot-os2-table.hh"
#include "hb-ot-var-hvar-table.hh"
/*
* gasp -- Grid-fitting and Scan-conversion Procedure
* https://docs.microsoft.com/en-us/typography/opentype/spec/gasp
*/
#define HB_OT_TAG_gasp HB_TAG('g','a','s','p')
namespace OT {
struct GaspRange
{
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
}
public:
HBUINT16 rangeMaxPPEM; /* Upper limit of range, in PPEM */
HBUINT16 rangeGaspBehavior;
/* Flags describing desired rasterizer behavior. */
public:
DEFINE_SIZE_STATIC (4);
};
struct gasp
{
static constexpr hb_tag_t tableTag = HB_OT_TAG_gasp;
const GaspRange &get_gasp_range (unsigned int i) const
{ return gaspRanges[i]; }
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
gaspRanges.sanitize (c));
}
protected:
HBUINT16 version; /* Version number (set to 1) */
Array16Of<GaspRange>
gaspRanges; /* Number of records to follow
* Sorted by ppem */
public:
DEFINE_SIZE_ARRAY (4, gaspRanges);
};
} /* namespace OT */
#endif /* HB_OT_GASP_TABLE_HH */
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