15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright © 2011 Martin Hosken 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright © 2011 SIL International 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright © 2011,2012 Google, Inc. 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This is part of HarfBuzz, a text shaping library. 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Permission is hereby granted, without written agreement and without 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * license or royalty fees, to use, copy, modify, and distribute this 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * software and its documentation for any purpose, provided that the 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * above copyright notice and the following two paragraphs appear in 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * all copies of this software. 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * DAMAGE. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Google Author(s): Behdad Esfahbod 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define HB_SHAPER graphite2 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define hb_graphite2_shaper_font_data_t gr_font 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "hb-shaper-impl-private.hh" 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "hb-graphite2.h" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include <graphite2/Segment.h> 36f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)HB_SHAPER_DATA_ENSURE_DECLARE(graphite2, face) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)HB_SHAPER_DATA_ENSURE_DECLARE(graphite2, font) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shaper face data 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct hb_graphite2_tablelist_t { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct hb_graphite2_tablelist_t *next; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_t *blob; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int tag; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} hb_graphite2_tablelist_t; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct hb_graphite2_shaper_face_data_t { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_face_t *face; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_face *grface; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_tablelist_t *tlist; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const void *hb_graphite2_get_table (const void *data, unsigned int tag, size_t *len) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_shaper_face_data_t *face_data = (hb_graphite2_shaper_face_data_t *) data; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_tablelist_t *tlist = face_data->tlist; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_t *blob = NULL; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (hb_graphite2_tablelist_t *p = tlist; p; p = p->next) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (p->tag == tag) { 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blob = p->blob; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!blob)) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blob = face_data->face->reference_table (tag); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_tablelist_t *p = (hb_graphite2_tablelist_t *) calloc (1, sizeof (hb_graphite2_tablelist_t)); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!p)) { 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_destroy (blob); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) p->blob = blob; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) p->tag = tag; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* TODO Not thread-safe, but fairly harmless. 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * We can do the double-chcked pointer cmpexch thing here. */ 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) p->next = face_data->tlist; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) face_data->tlist = p; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int tlen; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *d = hb_blob_get_data (blob, &tlen); 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *len = tlen; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return d; 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)hb_graphite2_shaper_face_data_t * 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shaper_face_data_create (hb_face_t *face) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_t *silf_blob = face->reference_table (HB_GRAPHITE2_TAG_SILF); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Umm, we just reference the table to check whether it exists. 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Maybe add better API for this? */ 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!hb_blob_get_length (silf_blob)) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_destroy (silf_blob); 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_destroy (silf_blob); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_shaper_face_data_t *data = (hb_graphite2_shaper_face_data_t *) calloc (1, sizeof (hb_graphite2_shaper_face_data_t)); 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!data)) 11023730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) return NULL; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) data->face = face; 1132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) data->grface = gr_make_face (data, &hb_graphite2_get_table, gr_face_preloadAll); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!data->grface)) { 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) free (data); 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return data; 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shaper_face_data_destroy (hb_graphite2_shaper_face_data_t *data) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_tablelist_t *tlist = data->tlist; 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (tlist) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_tablelist_t *old = tlist; 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_blob_destroy (tlist->blob); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tlist = tlist->next; 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) free (old); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_face_destroy (data->grface); 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) free (data); 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)gr_face * 1422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)hb_graphite2_face_get_gr_face (hb_face_t *face) 1432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 1442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (unlikely (!hb_graphite2_shaper_face_data_ensure (face))) return NULL; 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return HB_SHAPER_DATA_GET (face)->grface; 1462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shaper font data 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static float hb_graphite2_get_advance (const void *hb_font, unsigned short gid) 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ((hb_font_t *) hb_font)->get_glyph_h_advance (gid); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)hb_graphite2_shaper_font_data_t * 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shaper_font_data_create (hb_font_t *font) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!hb_graphite2_shaper_face_data_ensure (font->face))) return NULL; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_face_t *face = font->face; 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face); 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return gr_make_font_with_advance_fn (font->x_scale, font, &hb_graphite2_get_advance, face_data->grface); 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shaper_font_data_destroy (hb_graphite2_shaper_font_data_t *data) 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_font_destroy (data); 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)gr_font * 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)hb_graphite2_font_get_gr_font (hb_font_t *font) 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 1782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (unlikely (!hb_graphite2_shaper_font_data_ensure (font))) return NULL; 1792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return HB_SHAPER_DATA_GET (font); 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shaper shape_plan data 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct hb_graphite2_shaper_shape_plan_data_t {}; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)hb_graphite2_shaper_shape_plan_data_t * 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan HB_UNUSED, 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const hb_feature_t *user_features HB_UNUSED, 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int num_user_features HB_UNUSED) 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (hb_graphite2_shaper_shape_plan_data_t *) HB_SHAPER_DATA_SUCCEEDED; 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shaper_shape_plan_data_destroy (hb_graphite2_shaper_shape_plan_data_t *data HB_UNUSED) 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shaper 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct hb_graphite2_cluster_t { 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int base_char; 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int num_chars; 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int base_glyph; 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int num_glyphs; 2125f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) unsigned int cluster; 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)hb_bool_t 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_hb_graphite2_shape (hb_shape_plan_t *shape_plan, 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_font_t *font, 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_buffer_t *buffer, 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const hb_feature_t *features, 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int num_features) 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_face_t *face = font->face; 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_face *grface = HB_SHAPER_DATA_GET (face)->grface; 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_font *grfont = HB_SHAPER_DATA_GET (font); 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *lang = hb_language_to_string (hb_buffer_get_language (buffer)); 2277d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const char *lang_end = lang ? strchr (lang, '-') : NULL; 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int lang_len = lang_end ? lang_end - lang : -1; 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_feature_val *feats = gr_face_featureval_for_lang (grface, lang ? hb_tag_from_string (lang, lang_len) : 0); 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (num_features--) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gr_feature_ref *fref = gr_face_find_fref (grface, features->tag); 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fref) 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_fref_set_feature_value (fref, features->value, feats); 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) features++; 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_segment *seg = NULL; 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gr_slot *is; 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int ci = 0, ic = 0; 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float curradvx = 0., curradvy = 0.; 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int scratch_size; 245f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size); 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 247f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) uint32_t *chars = (uint32_t *) scratch; 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (unsigned int i = 0; i < buffer->len; ++i) 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) chars[i] = buffer->info[i].codepoint; 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_tag_t script_tag[2]; 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_ot_tags_from_script (hb_buffer_get_script (buffer), &script_tag[0], &script_tag[1]); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) seg = gr_make_seg (grfont, grface, 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) script_tag[1] == HB_TAG_NONE ? script_tag[0] : script_tag[1], 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) feats, 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_utf32, chars, buffer->len, 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2 | (hb_buffer_get_direction (buffer) == HB_DIRECTION_RTL ? 1 : 0)); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!seg)) { 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (feats) gr_featureval_destroy (feats); 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int glyph_count = gr_seg_n_slots (seg); 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (unlikely (!glyph_count)) { 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (feats) gr_featureval_destroy (feats); 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_seg_destroy (seg); 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 273f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) scratch = buffer->get_scratch_buffer (&scratch_size); 274f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) while ((DIV_CEIL (sizeof (hb_graphite2_cluster_t) * buffer->len, sizeof (*scratch)) + 275f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) DIV_CEIL (sizeof (hb_codepoint_t) * glyph_count, sizeof (*scratch))) > scratch_size) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 27703b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) if (unlikely (!buffer->ensure (buffer->allocated * 2))) 27803b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) { 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (feats) gr_featureval_destroy (feats); 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_seg_destroy (seg); 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 283f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) scratch = buffer->get_scratch_buffer (&scratch_size); 284f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) } 285f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 286f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#define ALLOCATE_ARRAY(Type, name, len) \ 287f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) Type *name = (Type *) scratch; \ 288f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) { \ 289f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \ 290f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) assert (_consumed <= scratch_size); \ 291f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) scratch += _consumed; \ 292f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) scratch_size -= _consumed; \ 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ALLOCATE_ARRAY (hb_graphite2_cluster_t, clusters, buffer->len); 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ALLOCATE_ARRAY (hb_codepoint_t, gids, glyph_count); 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 298f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#undef ALLOCATE_ARRAY 299f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memset (clusters, 0, sizeof (clusters[0]) * buffer->len); 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_codepoint_t *pg = gids; 3035f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) clusters[0].cluster = buffer->info[0].cluster; 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (is = gr_seg_first_slot (seg), ic = 0; is; is = gr_slot_next_in_segment (is), ic++) 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int before = gr_slot_before (is); 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int after = gr_slot_after (is); 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *pg = gr_slot_gid (is); 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pg++; 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (clusters[ci].base_char > before && ci) 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) clusters[ci-1].num_chars += clusters[ci].num_chars; 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) clusters[ci-1].num_glyphs += clusters[ci].num_glyphs; 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ci--; 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (gr_slot_can_insert_before (is) && clusters[ci].num_chars && before >= clusters[ci].base_char + clusters[ci].num_chars) 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_graphite2_cluster_t *c = clusters + ci + 1; 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) c->base_char = clusters[ci].base_char + clusters[ci].num_chars; 3215f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) c->cluster = buffer->info[c->base_char].cluster; 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) c->num_chars = before - c->base_char; 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) c->base_glyph = ic; 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) c->num_glyphs = 0; 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ci++; 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) clusters[ci].num_glyphs++; 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (clusters[ci].base_char + clusters[ci].num_chars < after + 1) 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) clusters[ci].num_chars = after + 1 - clusters[ci].base_char; 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ci++; 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) //buffer->clear_output (); 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (unsigned int i = 0; i < ci; ++i) 3362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) { 3372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (unsigned int j = 0; j < clusters[i].num_glyphs; ++j) 3382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) { 3392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) hb_glyph_info_t *info = &buffer->info[clusters[i].base_glyph + j]; 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) info->codepoint = gids[clusters[i].base_glyph + j]; 3415f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) info->cluster = clusters[i].cluster; 3422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 3432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 3442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buffer->len = glyph_count; 3452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) //buffer->swap_buffers (); 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HB_DIRECTION_IS_BACKWARD(buffer->props.direction)) 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) curradvx = gr_seg_advance_X(seg); 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_glyph_position_t *pPos; 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (pPos = hb_buffer_get_glyph_positions (buffer, NULL), is = gr_seg_first_slot (seg); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) is; pPos++, is = gr_slot_next_in_segment (is)) 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos->x_offset = gr_slot_origin_X (is) - curradvx; 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos->y_offset = gr_slot_origin_Y (is) - curradvy; 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos->x_advance = gr_slot_advance_X (is, grface, grfont); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos->y_advance = gr_slot_advance_Y (is, grface, grfont); 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) curradvx -= pPos->x_advance; 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos->x_offset = gr_slot_origin_X (is) - curradvx; 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) curradvx += pPos->x_advance; 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos->y_offset = gr_slot_origin_Y (is) - curradvy; 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) curradvy += pPos->y_advance; 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) pPos[-1].x_advance += gr_seg_advance_X(seg) - curradvx; 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction)) 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hb_buffer_reverse_clusters (buffer); 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (feats) gr_featureval_destroy (feats); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gr_seg_destroy (seg); 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 377