Class: Numerals::Format::HtmlNotation

Inherits:
Notation
  • Object
show all
Defined in:
lib/numerals/format/notations/html.rb

Instance Attribute Summary

Attributes inherited from Notation

#format

Instance Method Summary collapse

Methods inherited from Notation

#disassemble, #initialize

Constructor Details

This class inherits a constructor from Numerals::Format::Notation

Instance Method Details

#assemble(output, text_parts) ⇒ Object 



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# File 'lib/numerals/format/notations/html.rb', line 9

def assemble(output, text_parts)
  # 1.23<span style="text-decoration: overline">456</span> &times;10<sup>9</sup>
  # Or alternative: use classes
  # <span class=”numerals-num”>1.23<span class="numerals-rep">456</span> &times;10<span class="numerals-sup">9</span></span>
  # .numerals-rep { text-decoration: overline; }
  # .numerals-sup { vertical-align: super; }
  # TODO: padding
  if text_parts.special?
    output << escape(text_parts.special)
  else
    output << escape(text_parts.sign)
    if format.symbols.base_prefix
      output << format.symbols.base_prefix
    end
    output << escape(text_parts.integer) # or decide here if empty integer part is show as 0?
    if text_parts.show_point?(format)
      output << escape(format.symbols.point)
    end
    output << escape(text_parts.fractional)
    if text_parts.repeat
      output << %(<span style="text-decoration: overline">#{escape(text_parts.repeat)}</span>)
    end
    if format.symbols.base_suffix || format.base != 10
      if format.symbols.base_prefix
        output << format.symbols.base_suffix
      else
        # show base suffix as a subscript
        subscript = format.symbols.base_suffix || base.to_s
        output << "<sub>#{subscript}</sub>"
      end
    end
    if text_parts.exponent_value != 0 || format.mode.mode == :scientific
      output << "&times;"
      output << escape(text_parts.exponent_base)
      output << "<sup>#{escape(text_parts.exponent)}</sup>"
    end
  end
end