class Magick::RVG

def new_canvas
  if @background_pattern
    canvas = Magick::Image.new(@width, @height, @background_pattern)
  elsif @background_image
    canvas = if @width != @background_image.columns || @height != @background_image.rows
               case @background_position
               when :scaled
                 @background_image.resize(@width, @height)
               when :tiled
                 Magick::Image.new(@width, @height, Magick::TextureFill.new(@background_image))
               when :fit
                 width = @width
                 height = @height
                 bgcolor = bgfill
                 @background_image.change_geometry(Magick::Geometry.new(width, height)) do |new_cols, new_rows|
                   bg_image = @background_image.resize(new_cols, new_rows)
                   if bg_image.columns != width || bg_image.rows != height
                     bg = Magick::Image.new(width, height) { |options| options.background_color = bgcolor }
                     bg_image = bg.composite!(bg_image, Magick::CenterGravity, Magick::OverCompositeOp)
                   end
                   bg_image
                 end
               else
                 @background_image.copy
               end
             else
               @background_image.copy
             end
  else
    bgcolor = bgfill
    canvas = Magick::Image.new(Integer(@width), Integer(@height)) { |options| options.background_color = bgcolor }
  end
  canvas[:desc] = @desc if @desc
  canvas[:title] = @title if @title
  canvas[:metadata] = @metadata if @metadata
  canvas
end