1 /* 2 * Copyright 2012 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_OT_SHAPE_NORMALIZE_PRIVATE_HH 28 #define HB_OT_SHAPE_NORMALIZE_PRIVATE_HH 29 30 #include "hb-private.hh" 31 32 #include "hb-font.h" 33 #include "hb-buffer.h" 34 35 /* buffer var allocations, used during the normalization process */ 36 #define glyph_index() var1.u32 37 38 struct hb_ot_shape_plan_t; 39 40 enum hb_ot_shape_normalization_mode_t { 41 HB_OT_SHAPE_NORMALIZATION_MODE_DECOMPOSED, 42 HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS, /* never composes base-to-base */ 43 HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, /* always fully decomposes and then recompose back */ 44 HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_FULL, /* including base-to-base composition */ 45 46 HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT = HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS 47 }; 48 49 HB_INTERNAL void _hb_ot_shape_normalize (const hb_ot_shape_plan_t *shaper, 50 hb_buffer_t *buffer, 51 hb_font_t *font); 52 53 54 struct hb_ot_shape_normalize_context_t 55 { 56 const hb_ot_shape_plan_t *plan; 57 hb_buffer_t *buffer; 58 hb_font_t *font; 59 hb_unicode_funcs_t *unicode; 60 bool (*decompose) (const hb_ot_shape_normalize_context_t *c, 61 hb_codepoint_t ab, 62 hb_codepoint_t *a, 63 hb_codepoint_t *b); 64 bool (*compose) (const hb_ot_shape_normalize_context_t *c, 65 hb_codepoint_t a, 66 hb_codepoint_t b, 67 hb_codepoint_t *ab); 68 }; 69 70 71 #endif /* HB_OT_SHAPE_NORMALIZE_PRIVATE_HH */ 72
