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# frozen_string_literal: true
module TTFunk
class Table
class Cff < TTFunk::Table
# CFF Charstrings Index.
class CharstringsIndex < TTFunk::Table::Cff::Index
# Top dict.
# @return [TTFunk::Table::Cff::TopDict]
attr_reader :top_dict
# @overload initialize(top_dict, file, offset, length = nil)
# @param top_dict [TTFunk::Table:Cff::TopDict]
# @param file [TTFunk::File]
# @param offset [Integer]
# @param length [Integer]
def initialize(top_dict, *remaining_args)
super(*remaining_args)
@top_dict = top_dict
end
private
def decode_item(index, _offset, _length)
TTFunk::Table::Cff::Charstring.new(index, top_dict, font_dict_for(index), super)
end
def encode_items(charmap)
charmap
.reject { |code, mapping| mapping[:new].zero? && !code.zero? }
.sort_by { |_code, mapping| mapping[:new] }
.map { |(_code, mapping)| items[mapping[:old]] }
end
def font_dict_for(index)
# only CID-keyed fonts contain an FD selector and font dicts
if top_dict.is_cid_font?
fd_index = top_dict.font_dict_selector[index]
top_dict.font_index[fd_index]
end
end
end
end
end
end
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