Module: Gifenc

Defined in:: lib/gifenc.rb,
lib/gif.rb,
lib/util.rb,
lib/image.rb,
lib/errors.rb,
lib/geometry.rb,
lib/extensions.rb,
lib/color_table.rb

Overview

Gifenc is a pure Ruby library to encode, decode and edit GIF files. It aims to eventually support the complete specification. The Gifenc module serves as a namespace to encapsulate the functionality of the entire library.

Defined Under Namespace

Modules: Geometry, Util Classes: ColorTable, Exception, Extension, Gif, Image

Constant Summary collapse

BLOCK_TERMINATOR = 1-byte block indicating the termination of a sequence of data sub-blocks.

"\x00"

DISPOSAL_REPLACE = Fully replace a frame with the next one.

DISPOSAL_NONE = Do not dispose a frame before displaying the next one.

DISPOSAL_BG = Restore to background color before displaying the next frame.

DISPOSAL_PREV = Restore to the previous undisposed frame before displaying the next one.

DEFAULT_DISPOSAL = Default disposal method to use when it hasn't been explicitly specified.

DISPOSAL_NONE

DEFAULT_DELAY = Default frame delay, in 1/100ths of a second, to use when an animated GIF without explicit delay is created.

DEFAULT_COLOR = Default color index to initialize blank images to.

DEFAULT_TRANS_COLOR = Default color index to use as transparent for those images which have transparency enabled but which don't have an explicit transparent color set.

DEFAULT_USER_INPUT = Default value of the deprecated user input flag in graphic control extensions.

false

DEFAULT_LOOPS = Default number of times to loop GIF's (-1 = indefinitely).

-1

DEFAULT_INTERLACE = Whether to use image interlacing by default.

false

DEFAULT_BACKGROUND = Default background color (only for exposed parts of the canvas). Note that this setting is actually ignored by most decoders.

DEFAULT_ASPECT_RATIO = Default pixel aspect ratio (0 = square). Note that this setting is ignored by most decoders.

DEFAULT_EXHIBIT_TIME = Default time to exhibit GIF's last frame when selected (in 1/100ths of sec)