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module Fox
  #
  # GIF Cursor class.
  #
  class FXGIFCursor < FXCursor
    #
    # Return the suggested file extension for this image type ("gif").
    #
    def FXGIFCursor.fileExt; end

    #
    # Return an initialized FXGIFCursor instance.
    #
    def initialize(a, pix, hx=-1, hy=-1) # :yields: theGIFCursor
    end
  end

  #
  # Save a GIF (Graphics Interchange Format) image to a stream.
  # If _fast_ is +true+, the faster Floyd-Steinberg dither method will be used
  # instead of the slower Wu quantization algorithm.
  # Returns +true+ on success, +false+ on failure.
  #
  # ==== Parameters:
  #
  # +store+:: stream to which to write the image data {FXStream}
  # +data+:: the image pixel data [Array of FXColor]
  # +width+:: width [Integer]
  # +height+:: height [Integer]
  # +fast+:: if +true+, use faster Floyd-Steinberg algorithm [Boolean]
  #
  def Fox.fxsaveGIF(store, data, width, height, fast=true); end

  #
  # Load a GIF file from a stream.
  # If successful, returns an array containing the image pixel data (as a
  # String), the transparency color, the image width and the image height.
  # If it fails, the function returns +nil+.
  #
  # ==== Parameters:
  #
  # +store+:: stream from which to read the file data {FXStream}
  #
  def Fox.fxloadGIF(store); end

  #
  # Return +true+ if _store_ (an FXStream instance) contains a GIF image.
  #
  def Fox.fxcheckGIF(store); end
end