1 /* 2 * Copyright © 2018 Ebrahim Byagowi 3 * 4 * This is part of HarfBuzz, a text shaping library. 5 * 6 * Permission is hereby granted, without written agreement and without 7 * license or royalty fees, to use, copy, modify, and distribute this 8 * software and its documentation for any purpose, provided that the 9 * above copyright notice and the following two paragraphs appear in 10 * all copies of this software. 11 * 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16 * DAMAGE. 17 * 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23 */ 24 25 #ifndef HB_OT_GASP_TABLE_HH 26 #define HB_OT_GASP_TABLE_HH 27 28 #include "hb-open-type.hh" 29 #include "hb-ot-hhea-table.hh" 30 #include "hb-ot-os2-table.hh" 31 #include "hb-ot-var-hvar-table.hh" 32 33 /* 34 * gasp -- Grid-fitting and Scan-conversion Procedure 35 * https://docs.microsoft.com/en-us/typography/opentype/spec/gasp 36 */ 37 #define HB_OT_TAG_gasp HB_TAG('g','a','s','p') 38 39 40 namespace OT { 41 42 struct GaspRange 43 { sanitizeOT::GaspRange44 bool sanitize (hb_sanitize_context_t *c) const 45 { 46 TRACE_SANITIZE (this); 47 return_trace (c->check_struct (this)); 48 } 49 50 public: 51 HBUINT16 rangeMaxPPEM; /* Upper limit of range, in PPEM */ 52 HBUINT16 rangeGaspBehavior; 53 /* Flags describing desired rasterizer behavior. */ 54 public: 55 DEFINE_SIZE_STATIC (4); 56 }; 57 58 struct gasp 59 { 60 static constexpr hb_tag_t tableTag = HB_OT_TAG_gasp; 61 get_gasp_rangeOT::gasp62 const GaspRange &get_gasp_range (unsigned int i) const 63 { return gaspRanges[i]; } 64 sanitizeOT::gasp65 bool sanitize (hb_sanitize_context_t *c) const 66 { 67 TRACE_SANITIZE (this); 68 return_trace (c->check_struct (this) && 69 gaspRanges.sanitize (c)); 70 } 71 72 protected: 73 HBUINT16 version; /* Version number (set to 1) */ 74 ArrayOf<GaspRange> 75 gaspRanges; /* Number of records to follow 76 * Sorted by ppem */ 77 public: 78 DEFINE_SIZE_ARRAY (4, gaspRanges); 79 }; 80 81 } /* namespace OT */ 82 83 84 #endif /* HB_OT_GASP_TABLE_HH */ 85