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Diffstat (limited to '')
-rw-r--r-- | gfx/harfbuzz/src/hb-ot-layout-gsub-table.hh | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-ot-layout-gsub-table.hh b/gfx/harfbuzz/src/hb-ot-layout-gsub-table.hh new file mode 100644 index 0000000000..fd8a68be02 --- /dev/null +++ b/gfx/harfbuzz/src/hb-ot-layout-gsub-table.hh @@ -0,0 +1,94 @@ +/* + * Copyright © 2007,2008,2009,2010 Red Hat, Inc. + * Copyright © 2010,2012,2013 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. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_OT_LAYOUT_GSUB_TABLE_HH +#define HB_OT_LAYOUT_GSUB_TABLE_HH + +#include "OT/Layout/GSUB/GSUB.hh" + +namespace OT { +namespace Layout { +namespace GSUB_impl { + +// TODO(garretrieger): Move into the new layout directory. +/* Out-of-class implementation for methods recursing */ + +#ifndef HB_NO_OT_LAYOUT +/*static*/ inline bool ExtensionSubst::is_reverse () const +{ + return SubstLookup::lookup_type_is_reverse (get_type ()); +} +template <typename context_t> +/*static*/ typename context_t::return_t SubstLookup::dispatch_recurse_func (context_t *c, unsigned int lookup_index) +{ + const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (lookup_index); + return l.dispatch (c); +} + +/*static*/ typename hb_closure_context_t::return_t SubstLookup::closure_glyphs_recurse_func (hb_closure_context_t *c, unsigned lookup_index, hb_set_t *covered_seq_indices, unsigned seq_index, unsigned end_index) +{ + const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (lookup_index); + if (l.may_have_non_1to1 ()) + hb_set_add_range (covered_seq_indices, seq_index, end_index); + return l.dispatch (c); +} + +template <> +inline hb_closure_lookups_context_t::return_t +SubstLookup::dispatch_recurse_func<hb_closure_lookups_context_t> (hb_closure_lookups_context_t *c, unsigned this_index) +{ + const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (this_index); + return l.closure_lookups (c, this_index); +} + +template <> +inline bool SubstLookup::dispatch_recurse_func<hb_ot_apply_context_t> (hb_ot_apply_context_t *c, unsigned int lookup_index) +{ + auto *gsub = c->face->table.GSUB.get_relaxed (); + const SubstLookup &l = gsub->table->get_lookup (lookup_index); + unsigned int saved_lookup_props = c->lookup_props; + unsigned int saved_lookup_index = c->lookup_index; + c->set_lookup_index (lookup_index); + c->set_lookup_props (l.get_props ()); + + bool ret = false; + auto *accel = gsub->get_accel (lookup_index); + ret = accel && accel->apply (c, l.get_subtable_count (), false); + + c->set_lookup_index (saved_lookup_index); + c->set_lookup_props (saved_lookup_props); + return ret; +} +#endif + +} /* namespace GSUB_impl */ +} /* namespace Layout */ +} /* namespace OT */ + + +#endif /* HB_OT_LAYOUT_GSUB_TABLE_HH */ |