Class: Storyboard::Renderer

Inherits:
Object show all
Defined in:
lib/storyboard/generators/sub.rb

Direct Known Subclasses

GifRenderer, PDFRenderer

Constant Summary collapse

@@size_canvas = 
Prawn::Document.new

Instance Method Summary collapse

Instance Method Details

#add_subtitle(image, subtitle, dimensions) ⇒ Object 



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# File 'lib/storyboard/generators/sub.rb', line 14

def add_subtitle(image, subtitle, dimensions)
  offset = 0
  subtitle.lines.reverse.each_with_index {|caption,i|
    escaped = caption.gsub("'", "\\\\'")
    font_size = 30
    text_width = dimensions[0] + 1
    while(text_width > (dimensions[0] * 0.9))
      font_size -= 1
      text_width = @@size_canvas.width_of(caption.encode!("utf-8"), :size => font_size)
    end

    font = Storyboard.needs_KFhimaji ? "#{Storyboard.path}/fonts/KFhimaji.otf" : "#{Storyboard.path}/fonts/DejaVuSans.ttf"

    write_mvg(offset,escaped, 0)
    image.combine_options do |c|
      c.font font
      c.fill "#333333"
      c.strokewidth '1'
      c.stroke '#000000'
      c.pointsize font_size.to_s
      c.gravity "south"
      c.draw "@#{File.join(@storyboard.options[:save_directory],'tmp.mvg')}"
    end


    write_mvg(offset,escaped, -2)
    #and the shadow
    image.combine_options do |c|
      c.font font
      c.fill "#ffffff"
      c.strokewidth '1'
      c.stroke 'transparent'
      c.pointsize font_size.to_s
      c.gravity "south"
      c.draw "@#{File.join(@storyboard.options[:save_directory],'tmp.mvg')}"
    end

    offset += (@@size_canvas.height_of(caption.encode!("utf-8"), :size => font_size)).ceil
  }
end

#write_mvg(offset, line, nudge = 0) ⇒ Object 



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# File 'lib/storyboard/generators/sub.rb', line 6

def write_mvg(offset, line, nudge=0)
  out = File.open(File.join(@storyboard.options[:save_directory], 'tmp.mvg'), 'wt', encoding: 'UTF-8')
  out.print("text #{(0+nudge).to_s}, #{(offset+nudge).to_s} '")
  out.print line
  out.print "'"
  out.close
end