mirror of
https://github.com/foliojs/pdfkit.git
synced 2026-02-01 16:56:57 +00:00
47 lines
1.5 KiB
CoffeeScript
47 lines
1.5 KiB
CoffeeScript
Table = require '../table'
|
|
Data = require '../../data'
|
|
|
|
class HheaTable extends Table
|
|
parse: (data) ->
|
|
data.pos = @offset
|
|
|
|
@version = data.readInt()
|
|
@ascender = data.readShort()
|
|
@decender = data.readShort()
|
|
@lineGap = data.readShort()
|
|
@advanceWidthMax = data.readShort()
|
|
@minLeftSideBearing = data.readShort()
|
|
@minRightSideBearing = data.readShort()
|
|
@xMaxExtent = data.readShort()
|
|
@caretSlopeRise = data.readShort()
|
|
@caretSlopeRun = data.readShort()
|
|
@caretOffset = data.readShort()
|
|
|
|
data.pos += 4 * 2 # skip 4 reserved int16 slots
|
|
|
|
@metricDataFormat = data.readShort()
|
|
@numberOfMetrics = data.readUInt16()
|
|
|
|
encode: (ids) ->
|
|
table = new Data
|
|
|
|
table.writeInt @version
|
|
table.writeShort @ascender
|
|
table.writeShort @decender
|
|
table.writeShort @lineGap
|
|
table.writeShort @advanceWidthMax
|
|
table.writeShort @minLeftSideBearing
|
|
table.writeShort @minRightSideBearing
|
|
table.writeShort @xMaxExtent
|
|
table.writeShort @caretSlopeRise
|
|
table.writeShort @caretSlopeRun
|
|
table.writeShort @caretOffset
|
|
|
|
table.writeByte(0) for i in [0...4 * 2] # skip 4 reserved int16 slots
|
|
|
|
table.writeShort @metricDataFormat
|
|
table.writeUInt16 ids.length # numberOfMetrics
|
|
|
|
return table.data
|
|
|
|
module.exports = HheaTable |