def warn_png_scale(file, scale_width, scale_height)
      if @deck.conf.warn_png_scale? && (scale_width > 1.0 || scale_height > 1.0)
        Squib.logger.warn "PNG is being upscaled - antialiasing could result: #{file}"
      end
    end
def warn_png_scale(file, scale_width, scale_height)
      if @deck.conf.warn_png_scale? && (scale_width > 1.0 || scale_height > 1.0)
        Squib.logger.warn "PNG is being upscaled - antialiasing could result: #{file}"
      end
    end
:nodoc:
 @api private