r = require 'restructure'
# horizontal header
module.exports = new r.Struct
version: r.int32
ascent: r.int16 # Distance from baseline of highest ascender
descent: r.int16 # Distance from baseline of lowest descender
lineGap: r.int16 # Typographic line gap
advanceWidthMax: r.uint16 # Maximum advance width value in 'hmtx' table
minLeftSideBearing: r.int16 # Maximum advance width value in 'hmtx' table
minRightSideBearing: r.int16 # Minimum right sidebearing value
xMaxExtent: r.int16
caretSlopeRise: r.int16 # Used to calculate the slope of the cursor (rise/run); 1 for vertical
caretSlopeRun: r.int16 # 0 for vertical
caretOffset: r.int16 # Set to 0 for non-slanted fonts
reserved: new r.Reserved(r.int16, 4)
metricDataFormat: r.int16 # 0 for current format
numberOfMetrics: r.uint16 # Number of advance widths in 'hmtx' table |