90 lines
2.2 KiB
Ruby
90 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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require_relative '../../reader'
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module TTFunk
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class Table
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class Glyf
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# Simple TrueType glyph
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class Simple
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# Glyph ID.
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# @return [Integer]
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attr_reader :id
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# Binary serialization of this glyph.
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# @return [String]
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attr_reader :raw
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# Number of contours in this glyph.
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# @return [Integer]
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attr_reader :number_of_contours
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# Minimum x for coordinate.
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# @return [Integer]
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attr_reader :x_min
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# Minimum y for coordinate.
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# @return [Integer]
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attr_reader :y_min
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# Maximum x for coordinate.
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# @return [Integer]
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attr_reader :x_max
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# Maximum y for coordinate.
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# @return [Integer]
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attr_reader :y_max
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# Point indices for the last point of each contour.
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# @return [Array<Integer>]
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attr_reader :end_points_of_contours
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# Total number of bytes for instructions.
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# @return [Integer]
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attr_reader :instruction_length
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# Instruction byte code.
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# @return [Array<Integer>]
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attr_reader :instructions
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# @param id [Integer] glyph ID.
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# @param raw [String]
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def initialize(id, raw)
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@id = id
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@raw = raw
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io = StringIO.new(raw)
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@number_of_contours, @x_min, @y_min, @x_max, @y_max =
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io.read(10).unpack('n*').map { |i|
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BinUtils.twos_comp_to_int(i, bit_width: 16)
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}
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@end_points_of_contours = io.read(number_of_contours * 2).unpack('n*')
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@instruction_length = io.read(2).unpack1('n')
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@instructions = io.read(instruction_length).unpack('C*')
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end
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# Is this glyph compound?
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# @return [false]
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def compound?
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false
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end
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# Recode glyph.
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#
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# @param _mapping Unused, here for API compatibility.
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# @return [String]
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def recode(_mapping)
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raw
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end
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# End point index of last contour.
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# @return [Integer]
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def end_point_of_last_contour
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end_points_of_contours.last + 1
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end
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end
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end
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end
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end
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