Sha256: aeadc8472680f2d8605c4b274e2f2072760fd611d72133a43ce0125ab5b28ccf
Contents?: true
Size: 1.76 KB
Versions: 4
Compression:
Stored size: 1.76 KB
Contents
require_relative '../table'
module TTFunk
class Table
class Sbix < Table
attr_reader :version
attr_reader :flags
attr_reader :num_strikes
attr_reader :strikes
BitmapData = Struct.new(:x, :y, :type, :data, :ppem, :resolution)
def bitmap_data_for(glyph_id, strike_index)
strike = strikes[strike_index]
return if strike.nil?
glyph_offset = strike[:glyph_data_offset][glyph_id]
next_glyph_offset = strike[:glyph_data_offset][glyph_id + 1]
if glyph_offset && next_glyph_offset
bytes = next_glyph_offset - glyph_offset
if bytes > 0
parse_from(offset + strike[:offset] + glyph_offset) do
x, y, type = read(8, 's2A4')
data = StringIO.new(io.read(bytes - 8))
BitmapData.new(
x, y, type, data, strike[:ppem], strike[:resolution]
)
end
end
end
end
def all_bitmap_data_for(glyph_id)
strikes.each_index.map do |strike_index|
bitmap_data_for(glyph_id, strike_index)
end.compact
end
private
def parse!
@version, @flags, @num_strikes = read(8, 'n2N')
strike_offsets = Array.new(num_strikes) { read(4, 'N').first }
@strikes = strike_offsets.map do |strike_offset|
parse_from(offset + strike_offset) do
ppem, resolution = read(4, 'n2')
data_offsets = Array.new(file.maximum_profile.num_glyphs + 1) do
read(4, 'N').first
end
{
ppem: ppem,
resolution: resolution,
offset: strike_offset,
glyph_data_offset: data_offsets
}
end
end
end
end
end
end
Version data entries
4 entries across 3 versions & 2 rubygems