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100 lines
2.1 KiB
CoffeeScript
100 lines
2.1 KiB
CoffeeScript
PDFImage = require '../image'
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module.exports =
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initImages: ->
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@_imageRegistry = {}
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@_imageCount = 0
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image: (src, x, y, options = {}) ->
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if typeof x is 'object'
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options = x
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x = null
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x = x ? options.x ? @x
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y = y ? options.y ? @y
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if typeof src is 'string'
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image = @_imageRegistry[src]
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if not image
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if src.width and src.height
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image = src
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else
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image = @openImage src
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unless image.obj
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image.embed this
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@page.xobjects[image.label] ?= image.obj
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w = options.width or image.width
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h = options.height or image.height
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if options.width and not options.height
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wp = w / image.width
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w = image.width * wp
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h = image.height * wp
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else if options.height and not options.width
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hp = h / image.height
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w = image.width * hp
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h = image.height * hp
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else if options.scale
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w = image.width * options.scale
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h = image.height * options.scale
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else if options.fit
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[bw, bh] = options.fit
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bp = bw / bh
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ip = image.width / image.height
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if ip > bp
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w = bw
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h = bw / ip
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else
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h = bh
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w = bh * ip
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else if options.cover
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[bw, bh] = options.cover
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bp = bw / bh
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ip = image.width / image.height
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if ip > bp
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h = bh
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w = bh * ip
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else
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w = bw
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h = bw / ip
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if options.fit or options.cover
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if options.align is 'center'
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x = x + bw / 2 - w / 2
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else if options.align is 'right'
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x = x + bw - w
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if options.valign is 'center'
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y = y + bh / 2 - h / 2
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else if options.valign is 'bottom'
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y = y + bh - h
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# Set the current y position to below the image if it is in the document flow
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@y += h if @y is y
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@save()
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@transform w, 0, 0, -h, x, y + h
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@addContent "/#{image.label} Do"
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@restore()
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return this
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openImage: (src) ->
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if typeof src is 'string'
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image = @_imageRegistry[src]
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if not image
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image = PDFImage.open src, 'I' + (++@_imageCount)
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if typeof src is 'string'
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@_imageRegistry[src] = image
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return image
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