| /* |
| * 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-private.hh" |
| |
| |
| namespace OT { |
| |
| |
| /* |
| * hhea -- The Horizontal Header Table |
| * vhea -- The Vertical Header Table |
| */ |
| |
| #define HB_OT_TAG_hhea HB_TAG('h','h','e','a') |
| #define HB_OT_TAG_vhea HB_TAG('v','h','e','a') |
| |
| |
| struct _hea |
| { |
| static const hb_tag_t tableTag = HB_TAG('_','h','e','a'); |
| |
| static const hb_tag_t hheaTag = HB_OT_TAG_hhea; |
| static const hb_tag_t vheaTag = HB_OT_TAG_vhea; |
| |
| inline 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). */ |
| SHORT caretSlopeRise; /* Used to calculate the slope of the |
| * cursor (rise/run); 1 for vertical caret, |
| * 0 for horizontal.*/ |
| SHORT caretSlopeRun; /* 0 for vertical caret, 1 for horizontal. */ |
| SHORT 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. */ |
| SHORT reserved1; /* Set to 0. */ |
| SHORT reserved2; /* Set to 0. */ |
| SHORT reserved3; /* Set to 0. */ |
| SHORT reserved4; /* Set to 0. */ |
| SHORT metricDataFormat; /* 0 for current format. */ |
| USHORT numberOfLongMetrics; /* Number of LongMetric entries in metric |
| * table. */ |
| public: |
| DEFINE_SIZE_STATIC (36); |
| }; |
| |
| struct hhea : _hea { |
| static const hb_tag_t tableTag = HB_OT_TAG_hhea; |
| }; |
| struct vhea : _hea { |
| static const hb_tag_t tableTag = HB_OT_TAG_vhea; |
| }; |
| |
| |
| } /* namespace OT */ |
| |
| |
| #endif /* HB_OT_HHEA_TABLE_HH */ |