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# File 'lib/fn/pdf/writer.rb', line 40
def translate(doc, options = {})
raise "Not an FN Document" unless doc.is_a?(FN::Document)
file = options[:save_as]
bkg = options[:background]
pdf_version = options[:pdf_version] || 1.5
license = options[:license]
resource_file = options[:font_list] || File.join(File.dirname(__FILE__), "pdflib.upr")
self.class.encoding = options[:encoding] || "unicode"
textformat = options[:textformat] || "utf8"
root = options[:resource_root] || ""
watermark = options[:watermark]
context = FN::Node::Context.new
context.add SetParameter("license", license)
context.add SetParameter("resourcefile", resource_file)
context.add SetParameter("hypertextencoding", self.class.encoding)
context.add SetParameter("textformat", textformat)
context << OpenPdi(bkg, assigns = "pdi") if bkg
context << BeginDocument(file, pdf_version)
context.add SetParameter("topdown", true)
doc.fonts do |name|
LoadFont.add_all_variants_to context, name
end
flows_by_name = {}
doc.textflows.each do |flow|
ctf = CreateTextflow(flow)
flows_by_name[ctf.flow_name] = ctf
context.add ctf
end
doc.pages.each do |page|
context.retain_after do
context << BeginPageExt(page["width"], page["height"], page["number"])
if bkg
context << OpenPdiPage("{pdi}", page["number"], assigns = "page" )
context.add FitPdiPage("{page}")
elsif page["background"]
bkg_image = doc.resource(page["background"]).path_from(root)
context.add LoadImage(bkg_image, "tmp")
context.add FitImage("{tmp}", 0, page["height"],
:fitmethod => :meet,
:boxsize => [page["width"], page["height"]])
end
context.add(Watermark(watermark)) if watermark
end
end
doc.text_blocks.each do |block|
flow = CreateTextflow(block)
context.retain_after do
key = "flow-#{block.text}"
if flow.empty?
flow = flows_by_name[key]
else
flows_by_name.delete(key)
context.add(flow)
end
if flow
context << ResumePage(block.page_number)
context << Invert(block) if block["flip"] == "yes"
context.add FitTextflow(flow, block)
end
end
end
doc.photo_blocks.each do |block|
image = nil
begin
context.inject_at_page(block.page_number) do
image = open(doc.resource(block.src))
tmp = Magick::Image::from_blob(image.read).first
dims = [tmp.columns.to_f, tmp.rows.to_f]
x, y, width, height = calculate(block, dims)
context.add LoadImage(image, "tmp")
context.add FitImage("{tmp}", x, y, :fitmethod => "meet",
:boxsize => [width, height])
end
rescue Magick::ImageMagickError => e
$stderr.puts e.message
$stderr.puts e.backtrace.join("\n")
raise WriterError.new("Couldn't load remote photo '#{block.src}', given by #{doc.resource(block.src).node}")
end
end
doc.pages.each do |page|
context.add EndPageExt(page["number"])
end
return context.doc
end
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