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54 lines
1.4 KiB
CoffeeScript
54 lines
1.4 KiB
CoffeeScript
fontkit = require 'fontkit'
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class PDFFont
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@open: (document, src, family, id) ->
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if typeof src is 'string'
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if StandardFont.isStandardFont src
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return new StandardFont document, src, id
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font = fontkit.openSync src, family
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else if Buffer.isBuffer(src)
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font = fontkit.create src, family
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else if src instanceof Uint8Array
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font = fontkit.create new Buffer(src), family
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else if src instanceof ArrayBuffer
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font = fontkit.create new Buffer(new Uint8Array(src)), family
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if not font?
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throw new Error 'Not a supported font format or standard PDF font.'
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return new EmbeddedFont document, font, id
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constructor: ->
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throw new Error 'Cannot construct a PDFFont directly.'
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encode: (text) ->
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throw new Error 'Must be implemented by subclasses'
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widthOfString: (text) ->
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throw new Error 'Must be implemented by subclasses'
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ref: ->
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@dictionary ?= @document.ref()
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finalize: ->
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return if @embedded or not @dictionary?
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@embed()
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@embedded = true
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embed: ->
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throw new Error 'Must be implemented by subclasses'
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lineHeight: (size, includeGap = false) ->
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gap = if includeGap then @lineGap else 0
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(@ascender + gap - @descender) / 1000 * size
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module.exports = PDFFont
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StandardFont = require './font/standard'
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EmbeddedFont = require './font/embedded'
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