Module: Prawn::Font::Wrapping

Included in:
Metrics
Defined in:
lib/prawn/font/wrapping.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#naive_wrap(string, line_width, font_size, options = {}) ⇒ Object

TODO: Replace with TeX optimal algorithm



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# File 'lib/prawn/font/wrapping.rb', line 13

def naive_wrap(string, line_width, font_size, options = {})
  output = ""
  string.lines.each do |line|
    accumulated_width = 0
    segments = line.scan(/\S+|\s+/)
                                  
    segments.each do |segment|    
      segment_width = string_width(segment, font_size, 
        :kerning => options[:kerning]) 

      if (accumulated_width + segment_width).round > line_width.round
        output << "\n"
        
        if segment =~ /\s/
          accumulated_width = 0
        else
          output << segment
          accumulated_width = segment_width
        end
      else
        output << segment
        accumulated_width += segment_width
      end
    end
  end
  
  output
end