| /* |
| * Copyright © 2018 Google, Inc. |
| * |
| * This is part of HarfBuzz, a text shaping library. |
| * |
| * Permission is hereby granted, without written agreement and without |
| * license or royalty fees, to use, copy, modify, and distribute this |
| * software and its documentation for any purpose, provided that the |
| * above copyright notice and the following two paragraphs appear in |
| * all copies of this software. |
| * |
| * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| * |
| * Google Author(s): Garret Rieger, Roderick Sheeter |
| */ |
| |
| #ifndef HB_SUBSET_PLAN_HH |
| #define HB_SUBSET_PLAN_HH |
| |
| #include "hb.hh" |
| |
| #include "hb-subset.h" |
| #include "hb-subset-input.hh" |
| |
| #include "hb-map.hh" |
| |
| struct hb_subset_plan_t |
| { |
| hb_object_header_t header; |
| |
| bool drop_hints : 1; |
| bool drop_layout : 1; |
| bool desubroutinize : 1; |
| |
| // For each cp that we'd like to retain maps to the corresponding gid. |
| hb_set_t *unicodes; |
| |
| hb_vector_t<hb_codepoint_t> glyphs; |
| hb_set_t *glyphset; |
| |
| hb_map_t *codepoint_to_glyph; |
| hb_map_t *glyph_map; |
| |
| // Plan is only good for a specific source/dest so keep them with it |
| hb_face_t *source; |
| hb_face_t *dest; |
| |
| bool new_gid_for_codepoint (hb_codepoint_t codepoint, |
| hb_codepoint_t *new_gid) const |
| { |
| hb_codepoint_t old_gid = codepoint_to_glyph->get (codepoint); |
| if (old_gid == HB_MAP_VALUE_INVALID) |
| return false; |
| |
| return new_gid_for_old_gid (old_gid, new_gid); |
| } |
| |
| bool new_gid_for_old_gid (hb_codepoint_t old_gid, |
| hb_codepoint_t *new_gid) const |
| { |
| hb_codepoint_t gid = glyph_map->get (old_gid); |
| if (gid == HB_MAP_VALUE_INVALID) |
| return false; |
| |
| *new_gid = gid; |
| return true; |
| } |
| |
| bool |
| add_table (hb_tag_t tag, |
| hb_blob_t *contents) |
| { |
| hb_blob_t *source_blob = source->reference_table (tag); |
| DEBUG_MSG(SUBSET, nullptr, "add table %c%c%c%c, dest %d bytes, source %d bytes", |
| HB_UNTAG(tag), |
| hb_blob_get_length (contents), |
| hb_blob_get_length (source_blob)); |
| hb_blob_destroy (source_blob); |
| return hb_face_builder_add_table (dest, tag, contents); |
| } |
| }; |
| |
| typedef struct hb_subset_plan_t hb_subset_plan_t; |
| |
| HB_INTERNAL hb_subset_plan_t * |
| hb_subset_plan_create (hb_face_t *face, |
| hb_subset_input_t *input); |
| |
| HB_INTERNAL void |
| hb_subset_plan_destroy (hb_subset_plan_t *plan); |
| |
| #endif /* HB_SUBSET_PLAN_HH */ |
