1 /* 2 * Copyright 2009 Red Hat, Inc. 3 * Copyright 2011 Google, Inc. 4 * 5 * This is part of HarfBuzz, a text shaping library. 6 * 7 * Permission is hereby granted, without written agreement and without 8 * license or royalty fees, to use, copy, modify, and distribute this 9 * software and its documentation for any purpose, provided that the 10 * above copyright notice and the following two paragraphs appear in 11 * all copies of this software. 12 * 13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 17 * DAMAGE. 18 * 19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 24 * 25 * Red Hat Author(s): Behdad Esfahbod 26 * Google Author(s): Behdad Esfahbod 27 */ 28 29 #ifndef HB_FACE_PRIVATE_HH 30 #define HB_FACE_PRIVATE_HH 31 32 #include "hb-private.hh" 33 34 #include "hb-object-private.hh" 35 #include "hb-shaper-private.hh" 36 #include "hb-shape-plan-private.hh" 37 38 39 /* 40 * hb_face_t 41 */ 42 43 struct hb_face_t { 44 hb_object_header_t header; 45 ASSERT_POD (); 46 47 hb_bool_t immutable; 48 49 hb_reference_table_func_t reference_table_func; 50 void *user_data; 51 hb_destroy_func_t destroy; 52 53 unsigned int index; 54 mutable unsigned int upem; 55 mutable unsigned int num_glyphs; 56 57 struct hb_shaper_data_t shaper_data; 58 59 struct plan_node_t { 60 hb_shape_plan_t *shape_plan; 61 plan_node_t *next; 62 } *shape_plans; 63 64 65 inline hb_blob_t *reference_table (hb_tag_t tag) const 66 { 67 hb_blob_t *blob; 68 69 if (unlikely (!reference_table_func)) 70 return hb_blob_get_empty (); 71 72 blob = reference_table_func (/*XXX*/const_cast<hb_face_t *> (this), tag, user_data); 73 if (unlikely (!blob)) 74 return hb_blob_get_empty (); 75 76 return blob; 77 } 78 79 inline HB_PURE_FUNC unsigned int get_upem (void) const 80 { 81 if (unlikely (!upem)) 82 load_upem (); 83 return upem; 84 } 85 86 inline unsigned int get_num_glyphs (void) const 87 { 88 if (unlikely (num_glyphs == (unsigned int) -1)) 89 load_num_glyphs (); 90 return num_glyphs; 91 } 92 93 private: 94 HB_INTERNAL void load_upem (void) const; 95 HB_INTERNAL void load_num_glyphs (void) const; 96 }; 97 98 extern HB_INTERNAL const hb_face_t _hb_face_nil; 99 100 #define HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS 101 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_PROTOTYPE(shaper, face); 102 #include "hb-shaper-list.hh" 103 #undef HB_SHAPER_IMPLEMENT 104 #undef HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS 105 106 107 #endif /* HB_FACE_PRIVATE_HH */ 108
