Class: DocPDF::Adapters::Converters::Hexapdf

Inherits:
Base
  • Object
show all
Defined in:
lib/docpdf/adapters/converters/hexapdf.rb

Constant Summary collapse

MIME_TYPES = 
%w[text/plain].freeze
HEXAPDF_PAGE_SIZES = 
{
  "LETTER" => :Letter, "LEGAL" => :Legal, "TABLOID" => :Tabloid,
  "A0" => :A0, "A1" => :A1, "A2" => :A2, "A3" => :A3, "A4" => :A4,
  "A5" => :A5, "A6" => :A6, "B0" => :B0, "B1" => :B1, "B2" => :B2,
  "B3" => :B3, "B4" => :B4, "B5" => :B5, "B6" => :B6,
}.freeze

Class Method Summary collapse

Class Method Details

.convert(data, _source_filename) ⇒ Object 



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# File 'lib/docpdf/adapters/converters/hexapdf.rb', line 19

def convert(data, _source_filename)
  config = DocPDF.configuration
  opts = config.text_options
  content = data.dup.force_encoding("UTF-8")
  page_size = normalize_page_size(config.page_size)

  doc = HexaPDF::Document.new
  register_font(doc, opts[:font], opts[:font_file])
  page = doc.pages.add(page_size)
  canvas = page.canvas

  canvas.font(opts[:font], size: opts[:font_size])
  canvas.fill_color(opts[:color])

  margins = opts[:margins]
  y = page.box.height - margins[0]
  line_height = opts[:font_size] * 1.4

  content.each_line do |line|
    if y < margins[2]
      page = doc.pages.add(page_size)
      canvas = page.canvas
      canvas.font(opts[:font], size: opts[:font_size])
      canvas.fill_color(opts[:color])
      y = page.box.height - margins[0]
    end
    canvas.text(line.chomp, at: [margins[3], y])
    y -= line_height
  end

  write_to_string(doc)
rescue HexaPDF::Error => e
  raise ConversionError, "HexaPDF failed to render text to PDF: #{e.message}"
end