kc3-lang/harfbuzz/src/hb-ot-hhea-table.hh

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• Hash : ef006549
  Author :
  Date : 2019-01-22T12:08:57
  

  Convert tag enum class consts to static constexpr
  
  Part of https://github.com/harfbuzz/harfbuzz/issues/1553
  

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• src/hb-ot-hhea-table.hh

• /*
   * 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"
  
  /*
   * 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_vhea HB_TAG('v','h','e','a')
  
  
  namespace OT {
  
  
  template <typename T>
  struct _hea
  {
    bool sanitize (hb_sanitize_context_t *c) const
    {
      TRACE_SANITIZE (this);
      return_trace (c->check_struct (this) && likely (version.major == 1));
    }
  
    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. */
    HBUINT16	numberOfLongMetrics;	/* Number of LongMetric entries in metric
  					 * table. */
    public:
    DEFINE_SIZE_STATIC (36);
  };
  
  struct hhea : _hea<hhea> {
    static constexpr hb_tag_t tableTag = HB_OT_TAG_hhea;
  };
  struct vhea : _hea<vhea> {
    static constexpr hb_tag_t tableTag = HB_OT_TAG_vhea;
  };
  
  
  } /* namespace OT */
  
  
  #endif /* HB_OT_HHEA_TABLE_HH */
  

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