37 lines
1.1 KiB
Erlang
37 lines
1.1 KiB
Erlang
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-module(hhea).
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-export([parse_hhea_table/1]).
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-include("sizes.hrl").
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-import(read_utils, [read_fixed/1, read_long_datetime/1]).
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parse_hhea_table(
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<<1:16, 0:16,
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Ascender:16/signed,
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Descender:16/signed,
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LineGap:16/signed,
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AdvanceWidthMax:16,
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MinLeftSideBearing:16/signed,
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MinRightSideBearing:16/signed,
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XMaxExtent:16/signed,
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CaretSlopeRise:16/signed,
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CaretSlopeRun:16/signed,
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CaretOffset:16/signed,
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0:16/signed, 0:16/signed, 0:16/signed, 0:16/signed, %% reserved
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MetricDataFormat:16/signed, NumberOfHMetrics:16>>) ->
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case MetricDataFormat == 0 of false -> throw(invalid_metric_data_format); true -> ok end,
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[
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{majorVersion, 1},
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{minorVersion, 0},
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{ascender, Ascender},
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{descender, Descender},
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{line_gap, LineGap},
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{advance_width_max, AdvanceWidthMax},
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{min_left_side_bearing, MinLeftSideBearing},
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{min_right_side_bearing, MinRightSideBearing},
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{x_max_extent, XMaxExtent},
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{caret_slope_rise, CaretSlopeRise},
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{caret_slope_run, CaretSlopeRun},
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{caret_offset, CaretOffset},
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{metric_data_format, MetricDataFormat},
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{number_of_h_metrics, NumberOfHMetrics}
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].
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