hb-wasm-api-shape.hh (2148B)
1 /* 2 * Copyright © 2023 Behdad Esfahbod 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_WASM_API_SHAPE_HH 26 #define HB_WASM_API_SHAPE_HH 27 28 #include "hb-wasm-api.hh" 29 30 namespace hb { 31 namespace wasm { 32 33 34 static_assert (sizeof (feature_t) == sizeof (hb_feature_t), ""); 35 36 HB_WASM_INTERFACE (bool_t, shape_with) (HB_WASM_EXEC_ENV 37 ptr_d(font_t, font), 38 ptr_d(buffer_t, buffer), 39 ptr_d(const feature_t, features), 40 uint32_t num_features, 41 const char *shaper) 42 { 43 if (unlikely (0 == strcmp (shaper, "wasm"))) 44 return false; 45 46 HB_REF2OBJ (font); 47 HB_REF2OBJ (buffer); 48 49 /* Pre-conditions that make hb_shape_full() crash should be checked here. */ 50 51 if (unlikely (!buffer->ensure_unicode ())) 52 return false; 53 54 if (unlikely (!HB_DIRECTION_IS_VALID (buffer->props.direction))) 55 return false; 56 57 HB_ARRAY_PARAM (const feature_t, features, num_features); 58 if (unlikely (!features && num_features)) 59 return false; 60 61 const char * shaper_list[] = {shaper, nullptr}; 62 return hb_shape_full (font, buffer, 63 (hb_feature_t *) features, num_features, 64 shaper_list); 65 } 66 67 68 }} 69 70 #endif /* HB_WASM_API_SHAPE_HH */