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Diffstat (limited to '')
| -rw-r--r-- | gfx/harfbuzz/src/hb-subset-input.hh | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-subset-input.hh b/gfx/harfbuzz/src/hb-subset-input.hh new file mode 100644 index 0000000000..1970f795b9 --- /dev/null +++ b/gfx/harfbuzz/src/hb-subset-input.hh @@ -0,0 +1,154 @@ +/* + * 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_INPUT_HH +#define HB_SUBSET_INPUT_HH + + +#include "hb.hh" + +#include "hb-subset.h" +#include "hb-map.hh" +#include "hb-set.hh" +#include "hb-cplusplus.hh" +#include "hb-font.hh" + +struct hb_ot_name_record_ids_t +{ + hb_ot_name_record_ids_t () = default; + hb_ot_name_record_ids_t (unsigned platform_id_, + unsigned encoding_id_, + unsigned language_id_, + unsigned name_id_) + :platform_id (platform_id_), + encoding_id (encoding_id_), + language_id (language_id_), + name_id (name_id_) {} + + bool operator != (const hb_ot_name_record_ids_t o) const + { return !(*this == o); } + + inline bool operator == (const hb_ot_name_record_ids_t& o) const + { + return platform_id == o.platform_id && + encoding_id == o.encoding_id && + language_id == o.language_id && + name_id == o.name_id; + } + + inline uint32_t hash () const + { + uint32_t current = 0; + current = current * 31 + hb_hash (platform_id); + current = current * 31 + hb_hash (encoding_id); + current = current * 31 + hb_hash (language_id); + current = current * 31 + hb_hash (name_id); + return current; + } + + unsigned platform_id; + unsigned encoding_id; + unsigned language_id; + unsigned name_id; +}; + +typedef struct hb_ot_name_record_ids_t hb_ot_name_record_ids_t; + + +HB_MARK_AS_FLAG_T (hb_subset_flags_t); + +struct hb_subset_input_t +{ + HB_INTERNAL hb_subset_input_t (); + + ~hb_subset_input_t () + { + sets.~sets_t (); + +#ifdef HB_EXPERIMENTAL_API + for (auto _ : name_table_overrides.values ()) + _.fini (); +#endif + } + + hb_object_header_t header; + + struct sets_t { + hb::shared_ptr<hb_set_t> glyphs; + hb::shared_ptr<hb_set_t> unicodes; + hb::shared_ptr<hb_set_t> no_subset_tables; + hb::shared_ptr<hb_set_t> drop_tables; + hb::shared_ptr<hb_set_t> name_ids; + hb::shared_ptr<hb_set_t> name_languages; + hb::shared_ptr<hb_set_t> layout_features; + hb::shared_ptr<hb_set_t> layout_scripts; + }; + + union { + sets_t sets; + hb::shared_ptr<hb_set_t> set_ptrs[sizeof (sets_t) / sizeof (hb_set_t*)]; + }; + + unsigned flags; + bool attach_accelerator_data = false; + + // If set loca format will always be the long version. + bool force_long_loca = false; + + hb_hashmap_t<hb_tag_t, float> axes_location; + hb_map_t glyph_map; +#ifdef HB_EXPERIMENTAL_API + hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> name_table_overrides; +#endif + + inline unsigned num_sets () const + { + return sizeof (set_ptrs) / sizeof (hb_set_t*); + } + + inline hb_array_t<hb::shared_ptr<hb_set_t>> sets_iter () + { + return hb_array (set_ptrs); + } + + bool in_error () const + { + for (unsigned i = 0; i < num_sets (); i++) + { + if (unlikely (set_ptrs[i]->in_error ())) + return true; + } + + return axes_location.in_error () +#ifdef HB_EXPERIMENTAL_API + || name_table_overrides.in_error () +#endif + ; + } +}; + + +#endif /* HB_SUBSET_INPUT_HH */ |