1 /* 2 * Copyright 2018 Google, Inc. 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 * Google Author(s): Behdad Esfahbod 25 */ 26 27 #include "hb.hh" 28 29 #include "hb-open-type.hh" 30 #include "hb-face.hh" 31 32 #include "hb-aat-layout-common.hh" 33 #include "hb-aat-layout-feat-table.hh" 34 #include "hb-ot-layout-common.hh" 35 #include "hb-ot-cmap-table.hh" 36 #include "hb-ot-head-table.hh" 37 #include "hb-ot-maxp-table.hh" 38 39 #ifndef HB_NO_VISIBILITY 40 41 hb_vector_size_impl_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (hb_vector_size_impl_t) - 1) / sizeof (hb_vector_size_impl_t)] = {}; 42 /*thread_local*/ hb_vector_size_impl_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (hb_vector_size_impl_t) - 1) / sizeof (hb_vector_size_impl_t)] = {}; 43 44 DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF}; 45 DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00}; 46 DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x00,0x01, 0x00,0x00, 0x00, 0x00}; 47 DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00}; 48 DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF}; 49 /* Hand-coded because Lookup is a template. Sad. */ 50 const unsigned char _hb_Null_AAT_Lookup[2] = {0xFF, 0xFF}; 51 52 53 unsigned int 54 hb_face_t::load_num_glyphs () const 55 { 56 hb_sanitize_context_t c = hb_sanitize_context_t (); 57 c.set_num_glyphs (0); /* So we don't recurse ad infinitum. */ 58 hb_blob_t *maxp_blob = c.reference_table<OT::maxp> (this); 59 const OT::maxp *maxp_table = maxp_blob->as<OT::maxp> (); 60 61 unsigned int ret = maxp_table->get_num_glyphs (); 62 num_glyphs.set_relaxed (ret); 63 hb_blob_destroy (maxp_blob); 64 return ret; 65 } 66 67 unsigned int 68 hb_face_t::load_upem () const 69 { 70 unsigned int ret = table.head->get_upem (); 71 upem.set_relaxed (ret); 72 return ret; 73 } 74 75 #endif 76
