/*

 * Copyright © 2011,2012  Google, Inc.

 *

 *  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.

 *

 * Google Author(s): Behdad Esfahbod

 */

#ifndef HB_OT_HHEA_TABLE_HH

#define HB_OT_HHEA_TABLE_HH

#include "hb-open-type.hh"

#include "hb-ot-dual.hh"

/*

 * hhea -- Horizontal Header

 * https://docs.microsoft.com/en-us/typography/opentype/spec/hhea

 * vhea -- Vertical Header

 * https://docs.microsoft.com/en-us/typography/opentype/spec/vhea

 */

#define HB_OT_TAG_hhea HB_TAG('h','h','e','a')

#define HB_OT_TAG_HHEA HB_TAG('H','H','E','A')

#define HB_OT_TAG_vhea HB_TAG('v','h','e','a')

#define HB_OT_TAG_VHEA HB_TAG('V','H','E','A')

namespace OT {

template <typename T, typename Types>

struct _hea

{

  using LongMetricCount = typename Types::HBLUINT;

  static constexpr unsigned long_metric_count_max ()

  { return LongMetricCount::static_size == 4 ? 0xFFFFFFFFu : 0xFFFFu; }

OT::_hea<OT::hhea, OT::Layout::SmallTypes>::long_metric_count_max()

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  { return LongMetricCount::static_size == 4 ? 0xFFFFFFFFu : 0xFFFFu; }

Unexecuted instantiation: OT::_hea<OT::vhea, OT::Layout::SmallTypes>::long_metric_count_max()

  bool has_data () const { return version.major; }

OT::_hea<OT::hhea, OT::Layout::SmallTypes>::has_data() const

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  bool has_data () const { return version.major; }

Unexecuted instantiation: OT::_hea<OT::vhea, OT::Layout::SmallTypes>::has_data() const

  bool sanitize (hb_sanitize_context_t *c) const

  {

    TRACE_SANITIZE (this);

    return_trace (c->check_struct (this) &&

      hb_barrier () &&

      likely (version.major == 1));

  }

OT::_hea<OT::hhea, OT::Layout::SmallTypes>::sanitize(hb_sanitize_context_t*) 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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      hb_barrier () &&

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      likely (version.major == 1));

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  }

Unexecuted instantiation: OT::_hea<OT::vhea, OT::Layout::SmallTypes>::sanitize(hb_sanitize_context_t*) const

  public:

  FixedVersion<>version;  /* 0x00010000u for version 1.0. */

  FWORD   ascender; /* Typographic ascent. */

  FWORD   descender;  /* Typographic descent. */

  FWORD   lineGap;  /* Typographic line gap. */

  UFWORD  advanceMax; /* Maximum advance width/height value in

         * metrics table. */

  FWORD   minLeadingBearing;

        /* Minimum left/top sidebearing value in

         * metrics table. */

  FWORD   minTrailingBearing;

        /* Minimum right/bottom sidebearing value;

         * calculated as Min(aw - lsb -

         * (xMax - xMin)) for horizontal. */

  FWORD   maxExtent;  /* horizontal: Max(lsb + (xMax - xMin)),

         * vertical: minLeadingBearing+(yMax-yMin). */

  HBINT16 caretSlopeRise; /* Used to calculate the slope of the

         * cursor (rise/run); 1 for vertical caret,

         * 0 for horizontal.*/

  HBINT16 caretSlopeRun;  /* 0 for vertical caret, 1 for horizontal. */

  HBINT16 caretOffset;  /* The amount by which a slanted

         * highlight on a glyph needs

         * to be shifted to produce the

         * best appearance. Set to 0 for

         * non-slanted fonts. */

  HBINT16 reserved1;  /* Set to 0. */

  HBINT16 reserved2;  /* Set to 0. */

  HBINT16 reserved3;  /* Set to 0. */

  HBINT16 reserved4;  /* Set to 0. */

  HBINT16 metricDataFormat;/* 0 for current format. */

  LongMetricCount

    numberOfLongMetrics;

        /* Number of LongMetric entries in metric

         * table. */

  public:

  DEFINE_SIZE_STATIC (34 + Types::HBLUINT::static_size);

};

struct hhea : _hea<hhea, Layout::SmallTypes> {

  static constexpr hb_tag_t tableTag = HB_OT_TAG_hhea;

};

struct HHEA : _hea<HHEA, Layout::MediumTypes> {

  static constexpr hb_tag_t tableTag = HB_OT_TAG_HHEA;

};

struct vhea : _hea<vhea, Layout::SmallTypes> {

  static constexpr hb_tag_t tableTag = HB_OT_TAG_vhea;

};

struct VHEA : _hea<VHEA, Layout::MediumTypes> {

  static constexpr hb_tag_t tableTag = HB_OT_TAG_VHEA;

};

struct hhea_accelerator_t : hb_dual_table_t<hhea, HHEA>

{

  hhea_accelerator_t (hb_face_t *face) :

    hb_dual_table_t<hhea, HHEA> (face) {}

};

struct vhea_accelerator_t : hb_dual_table_t<vhea, VHEA>

{

  vhea_accelerator_t (hb_face_t *face) :

    hb_dual_table_t<vhea, VHEA> (face) {}

};

} /* namespace OT */

#endif /* HB_OT_HHEA_TABLE_HH */