module Asciidoctor::Pdf::FormattedText
module TextBackgroundAndBorderRenderer
  module_function

  # render_behind is called before the text is printed
  def render_behind fragment
    return if (pdf = fragment.document).scratch?
    data = fragment.format_state
    if (border_offset = data[:border_offset])
      at = [fragment.left - border_offset, fragment.top + border_offset]
      width = fragment.width + border_offset * 2
      height = fragment.height + border_offset * 2
    else
      at = fragment.top_left
      width = fragment.width
      height = fragment.height
    end
    border_radius = data[:border_radius]
    if (background_color = data[:background_color])
      prev_fill_color = pdf.fill_color
      pdf.fill_color background_color
      if border_radius
        pdf.fill_rounded_rectangle at, width, height, border_radius
      else
        pdf.fill_rectangle at, width, height
      end
      pdf.fill_color prev_fill_color
    end
    if (border_width = data[:border_width])
      border_color = data[:border_color]
      prev_stroke_color = pdf.stroke_color
      prev_line_width = pdf.line_width
      pdf.stroke_color border_color
      pdf.line_width border_width
      if border_radius
        pdf.stroke_rounded_rectangle at, width, height, border_radius
      else
        pdf.stroke_rectangle at, width, height
      end
      pdf.stroke_color prev_stroke_color
      pdf.line_width prev_line_width
    end
  end
end
end