Module: Cheepub::Converter::CheeLatex

Included in:
Kramdown::Converter::Latex
Defined in:
lib/cheepub/converter/cheelatex.rb

Instance Method Summary collapse

Instance Method Details

#convert_codeblock(el, opts) ⇒ Object 



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# File 'lib/cheepub/converter/cheelatex.rb', line 36

def convert_codeblock(el, opts)
  show_whitespace = el.attr['class'].to_s =~ /\bshow-whitespaces\b/
  lang = extract_code_language(el.attr)

  if @options[:syntax_highlighter] == :minted &&
      (highlighted_code = highlight_code(el.value, lang, :block))
    @data[:packages] << 'minted'
    "#{latex_link_target(el)}#{highlighted_code}\n"
  elsif (show_whitespace || lang) && @options[:syntax_highlighter]
    options = []
    options << "showspaces=%s,showtabs=%s" % (show_whitespace ? ['true', 'true'] : ['false', 'false'])
    options << "language=#{lang}" if lang
    options << "basicstyle=\\ttfamily\\footnotesize,columns=fixed,frame=tlbr"
    id = el.attr['id']
    options << "label=#{id}" if id
    attrs = attribute_list(el)
    "#{latex_link_target(el)}\\begin{lstlisting}[#{options.join(',')}]\n#{el.value}\n\\end{lstlisting}#{attrs}\n"
  else
    "#{latex_link_target(el)}\\begin{verbatim}#{el.value}\\end{verbatim}\n"
  end
end

#convert_html_element(el, opts) ⇒ Object 



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# File 'lib/cheepub/converter/cheelatex.rb', line 58

def convert_html_element(el, opts)
  case el.value
  when :ruby
    str = inner(el, opts)
    "\\ruby[g]{#{str}}"
  when :rt
    str = inner(el, opts)
    "}{#{str}"
  when :span
    "\\rensuji{#{inner(el, opts)}}"
  when "p"
    if el.children.size == 1 && el.children.first.value == "br"
      "\\rblatexEmptyLine\n"
    else
      super
    end
  else
    super
  end
end

#convert_img(el, opts) ⇒ Object 



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# File 'lib/cheepub/converter/cheelatex.rb', line 21

def convert_img(el, opts)
  line = el.options[:location]
  angle = @options[:page_direction] == "rtl" ? 90 : 0
  if el.attr['src'] =~ /^(https?|ftps?):\/\//
    warning("Cannot include non-local image#{line ? " (line #{line})" : ''}")
    ''
  elsif !el.attr['src'].empty?
    @data[:packages] << 'graphicx'
    "#{latex_link_target(el)}\\includegraphics[angle=#{angle}]{#{el.attr['src']}}"
  else
    warning("Cannot include image with empty path#{line ? " (line #{line})" : ''}")
    ''
  end
end

#convert_p(el, opts) ⇒ Object 



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# File 'lib/cheepub/converter/cheelatex.rb', line 7

def convert_p(el, opts)
  if el.children.size == 1 && el.children.first.type == :img && !(img = convert_img(el.children.first, opts)).empty?
    convert_standalone_image(el, opts, img)
  elsif el.attr['class'].to_s =~ /text\-right/
    "#{latex_link_target(el)}\\begin{flushright}#{inner(el, opts)}\\end{flushright}\n\n"
  else
    "#{latex_link_target(el)}#{inner(el, opts)}\n\n"
  end
end

#convert_standalone_image(el, opts, img) ⇒ Object 



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# File 'lib/cheepub/converter/cheelatex.rb', line 17

def convert_standalone_image(el, opts, img)
  "#{img}\n"
end