hb-aat-layout.hh (2434B)
1 /* 2 * Copyright © 2017 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 #ifndef HB_AAT_LAYOUT_HH 28 #define HB_AAT_LAYOUT_HH 29 30 #include "hb.hh" 31 32 #include "hb-ot-shape.hh" 33 #include "hb-aat-ltag-table.hh" 34 35 /* https://developer.apple.com/documentation/coretext/1508745-ctfontcreatewithgraphicsfont */ 36 #define HB_CORETEXT_DEFAULT_FONT_SIZE 12.f 37 38 struct hb_aat_feature_mapping_t 39 { 40 hb_tag_t otFeatureTag; 41 hb_aat_layout_feature_type_t aatFeatureType; 42 hb_aat_layout_feature_selector_t selectorToEnable; 43 hb_aat_layout_feature_selector_t selectorToDisable; 44 45 int cmp (hb_tag_t key) const 46 { return key < otFeatureTag ? -1 : key > otFeatureTag ? 1 : 0; } 47 }; 48 49 HB_INTERNAL const hb_aat_feature_mapping_t * 50 hb_aat_layout_find_feature_mapping (hb_tag_t tag); 51 52 HB_INTERNAL void 53 hb_aat_layout_compile_map (const hb_aat_map_builder_t *mapper, 54 hb_aat_map_t *map); 55 56 HB_INTERNAL void 57 hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan, 58 hb_font_t *font, 59 hb_buffer_t *buffer, 60 const hb_feature_t *features, 61 unsigned num_features); 62 63 HB_INTERNAL void 64 hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer); 65 66 HB_INTERNAL void 67 hb_aat_layout_position (const hb_ot_shape_plan_t *plan, 68 hb_font_t *font, 69 hb_buffer_t *buffer); 70 71 HB_INTERNAL void 72 hb_aat_layout_track (const hb_ot_shape_plan_t *plan, 73 hb_font_t *font, 74 hb_buffer_t *buffer); 75 76 77 #endif /* HB_AAT_LAYOUT_HH */