hb-ot-layout-private.hh revision 88474c6fdaf35c56368694a5b164f4988a004d49
1fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod/* 26c78683c042250a7b5a6fc6ebae4717b03fadf9eBehdad Esfahbod * Copyright (C) 2007,2008,2009 Red Hat, Inc. 3fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * 4c755cb3e3ac55156d0d2ec05adea7a650b97cc41Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 5fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * 6fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * Permission is hereby granted, without written agreement and without 7fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 8fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * software and its documentation for any purpose, provided that the 9fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * above copyright notice and the following two paragraphs appear in 10fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * all copies of this software. 11fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * 12fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * DAMAGE. 17fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * 18fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * 24fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod * Red Hat Author(s): Behdad Esfahbod 25fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod */ 26fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 270f0cd9d361f1bb614aa3fd4616160d027062370eBehdad Esfahbod#ifndef HB_OT_LAYOUT_PRIVATE_HH 280f0cd9d361f1bb614aa3fd4616160d027062370eBehdad Esfahbod#define HB_OT_LAYOUT_PRIVATE_HH 29fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 30fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#include "hb-private.h" 312c80296aa5991ad67483889147f5c84fefe54af2Behdad Esfahbod 32fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod#include "hb-ot-layout.h" 330dd200d28f51bf4062d8a377432c8977c80cb210Behdad Esfahbod#include "hb-ot-head-private.hh" 342c80296aa5991ad67483889147f5c84fefe54af2Behdad Esfahbod 35cc6d52279d10a2edcf0d86c3a18a79ff4f6d3858Behdad Esfahbod#include "hb-font-private.h" 3622da7fd94d6318c52df69d70470a85464ffc533dBehdad Esfahbod#include "hb-buffer-private.hh" 37fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 3823c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad EsfahbodHB_BEGIN_DECLS 3923c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod 40acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 4130bd763fa2fa4aceee51433ec9fc8dc28480b5d7Behdad Esfahbodtypedef unsigned int hb_ot_layout_class_t; 42ead428d7a0bf4dc84340a99f3959e5cc58123e99Behdad Esfahbod 430ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod/* 440ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod * hb_ot_layout_t 450ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod */ 460ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod 470a4399ca228d244e646abdb3487da0f13b228889Behdad Esfahbodstruct hb_ot_layout_t 4860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod{ 4970e0f2a75ec1559f2f70ada837ce4bc4baca49e3Behdad Esfahbod hb_blob_t *gdef_blob; 5070e0f2a75ec1559f2f70ada837ce4bc4baca49e3Behdad Esfahbod hb_blob_t *gsub_blob; 5170e0f2a75ec1559f2f70ada837ce4bc4baca49e3Behdad Esfahbod hb_blob_t *gpos_blob; 5270e0f2a75ec1559f2f70ada837ce4bc4baca49e3Behdad Esfahbod 53c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod const struct GDEF *gdef; 54c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod const struct GSUB *gsub; 555e5eb0573f7ea2ce2cf037fef0df70a4351e82c0Behdad Esfahbod const struct GPOS *gpos; 56c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod 5760d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod struct 5860d77cf05fddc5304b4b1fc19cdedba15cbee1e9Behdad Esfahbod { 59c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod unsigned char *klasses; 60c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod unsigned int len; 61c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod } new_gdef; 620ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod}; 635e5eb0573f7ea2ce2cf037fef0df70a4351e82c0Behdad Esfahbod 640a4399ca228d244e646abdb3487da0f13b228889Behdad Esfahbodstruct hb_ot_layout_context_t 650ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod{ 6623c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod hb_face_t *face; 670ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod hb_font_t *font; 682ebb89d63dd27e800f2b6cbf624924601105f48aBehdad Esfahbod 690a4399ca228d244e646abdb3487da0f13b228889Behdad Esfahbod /* Convert from font-space to user-space */ 70f0feb084b0fd1510474b25404d1dcc5686ee0538Behdad Esfahbod inline hb_position_t scale_x (int16_t v) { return scale (v, this->font->x_scale); } 71f0feb084b0fd1510474b25404d1dcc5686ee0538Behdad Esfahbod inline hb_position_t scale_y (int16_t v) { return scale (v, this->font->y_scale); } 72f0feb084b0fd1510474b25404d1dcc5686ee0538Behdad Esfahbod 73f0feb084b0fd1510474b25404d1dcc5686ee0538Behdad Esfahbod private: 74f0feb084b0fd1510474b25404d1dcc5686ee0538Behdad Esfahbod inline hb_position_t scale (int16_t v, unsigned int scale) { return v * (int64_t) scale / this->face->head_table->get_upem (); } 75c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod}; 76c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod 77c43562b2a7587fa3f9ef4c1c4338e4eda77368b5Behdad Esfahbod 780a4399ca228d244e646abdb3487da0f13b228889Behdad EsfahbodHB_INTERNAL hb_ot_layout_t * 790a4399ca228d244e646abdb3487da0f13b228889Behdad Esfahbod_hb_ot_layout_new (hb_face_t *face); 8023c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod 81eee8598d75d3af692d9ececf7e8ac458e892ba9eBehdad EsfahbodHB_INTERNAL void 820a4399ca228d244e646abdb3487da0f13b228889Behdad Esfahbod_hb_ot_layout_free (hb_ot_layout_t *layout); 8323c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod 84aff831ed6787abe8e24a977e34d97ff2e0b7dc21Behdad Esfahbod 8554e5aac5e2947d4e2864c6f2987e4d275da73100Behdad Esfahbod/* 8654e5aac5e2947d4e2864c6f2987e4d275da73100Behdad Esfahbod * GDEF 8754e5aac5e2947d4e2864c6f2987e4d275da73100Behdad Esfahbod */ 8854e5aac5e2947d4e2864c6f2987e4d275da73100Behdad Esfahbod 89347f0b8621d3adfec157e5634ff3defc818ea37fBehdad EsfahbodHB_INTERNAL hb_bool_t 9023c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod_hb_ot_layout_has_new_glyph_classes (hb_face_t *face); 9130bd763fa2fa4aceee51433ec9fc8dc28480b5d7Behdad Esfahbod 92347f0b8621d3adfec157e5634ff3defc818ea37fBehdad EsfahbodHB_INTERNAL void 9323c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod_hb_ot_layout_set_glyph_property (hb_face_t *face, 9430bd763fa2fa4aceee51433ec9fc8dc28480b5d7Behdad Esfahbod hb_codepoint_t glyph, 9530bd763fa2fa4aceee51433ec9fc8dc28480b5d7Behdad Esfahbod unsigned int property); 96590d55cbb9e21ef74dfd88eee51fd0a763958cd2Behdad Esfahbod 970ead481a5a8623103565fd7d924666e7342278ddBehdad EsfahbodHB_INTERNAL void 9823c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod_hb_ot_layout_set_glyph_class (hb_face_t *face, 990ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod hb_codepoint_t glyph, 1000ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod hb_ot_layout_glyph_class_t klass); 1010ead481a5a8623103565fd7d924666e7342278ddBehdad Esfahbod 102347f0b8621d3adfec157e5634ff3defc818ea37fBehdad EsfahbodHB_INTERNAL hb_bool_t 10323c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod_hb_ot_layout_check_glyph_property (hb_face_t *face, 10488474c6fdaf35c56368694a5b164f4988a004d49Behdad Esfahbod hb_glyph_info_t *ginfo, 10523c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod unsigned int lookup_flags, 10623c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod unsigned int *property); 1075a0b791184cf6ef39eae0570e14aca21abc32845Behdad Esfahbod 1084189b92aaa41e4a1756c561cc6e08b0ed024afdaBehdad EsfahbodHB_INTERNAL hb_bool_t 10923c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod_hb_ot_layout_skip_mark (hb_face_t *face, 11088474c6fdaf35c56368694a5b164f4988a004d49Behdad Esfahbod hb_glyph_info_t *ginfo, 11123c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod unsigned int lookup_flags, 11223c86aa0009324433e78fcd0c47f2c0ff14b1949Behdad Esfahbod unsigned int *property); 1134189b92aaa41e4a1756c561cc6e08b0ed024afdaBehdad Esfahbod 114acdba3f90b232fc12fcb200dca2584481b339118Behdad Esfahbod 115f96ffd43bce0ac6d9c897933c9be0e51d543e570Behdad EsfahbodHB_END_DECLS 116fd92a3dde32fd10df30c9eeb97641bc3c15b1e9bBehdad Esfahbod 1170f0cd9d361f1bb614aa3fd4616160d027062370eBehdad Esfahbod#endif /* HB_OT_LAYOUT_PRIVATE_HH */ 118