images.gif vocabulary
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Documentation
GIF Image Loader

Metadata

Tags:	images, file formats
Authors:	Doug Coleman, Keith Lazuka

Words

Tuple classes

Class	Superclass	Slots
application-extension	tuple	introducer label block-size identifier authentication-code application-data
comment-extension	tuple	introducer label comment-data
gif-frame	tuple	image-descriptor local-color-table
gif-unexpected-eof	tuple
graphics-control-extension	tuple	flags delay-time transparent-color-index
image-descriptor	tuple	left top width height flags first-code-size
loading-gif	tuple	loading? magic width height flags background-color default-aspect-ratio global-color-table graphic-control-extensions application-extensions plain-text-extensions comment-extensions image-descriptor local-color-table compressed-bytes
loading-gif-error	tuple	gif-image
plain-text-extension	tuple	introducer label block-size text-grid-left text-grid-top text-grid-width text-grid-height cell-width cell-height text-fg-color-index text-bg-color-index plain-text-data
trailer	tuple	byte
unhandled-data	tuple	byte
unimplemented	tuple	message
unknown-extension	tuple	n
unsupported-gif-format	tuple	magic

Singleton classes

gif-image

Ordinary words

Word	Stack effect
(read-sub-blocks)	( -- )
<loading-gif>	( -- loading-gif )
<trailer>	( byte -- obj )
?transparent-color-index	( loading-gif -- index/f )
APPLICATION-EXTENSION	( -- value )
BLOCK-TERMINATOR	( -- value )
COMMENT-EXTENSION	( -- value )
EXTENSION-IDENTIFIER	( -- value )
GRAPHIC-CONTROL-EXTENSION-BLOCK-SIZE	( -- value )
GRAPHICS-CONTROL-EXTENSION	( -- value )
IMAGE-DESCRIPTOR	( -- value )
PLAIN-TEXT-EXTENSION	( -- value )
TRAILER	( -- value )
apply-palette	( indexes palette transparent-index/f -- bitmap )
color-resolution	( image -- ? )
color-table-size	( image -- ? )
color-table?	( image -- ? )
colorize	( index palette transparent-index/f -- seq )
decompress	( loading-gif -- indexes )
dimensions	( loading-gif -- dim )
ensure-loaded	( gif-image -- gif-image )
gif-unexpected-eof	( -- * )
gif>image	( loading-gif -- image )
interlaced?	( image -- ? )
load-gif	( stream -- loading-gif )
loading-gif-error	( gif-image -- * )
maybe-read-local-color-table	( loading-gif -- loading-gif )
read-GIF87a	( loading-gif -- loading-gif )
read-GIF89a	( loading-gif -- loading-gif )
read-application-extension	( -- read-application-extension )
read-comment-extension	( -- comment-extension )
read-data	( loading-gif -- loading-gif )
read-extension	( loading-gif -- loading-gif )
read-gif-header	( loading-gif -- loading-gif )
read-global-color-table	( loading-gif -- loading-gif )
read-graphic-control-extension	( -- graphic-control-extension )
read-graphic-rendering-block	( loading-gif -- loading-gif )
read-image-data	( loading-gif -- loading-gif )
read-image-descriptor	( -- image-descriptor )
read-logical-screen-descriptor	( loading-gif -- loading-gif )
read-plain-text-extension	( -- plain-text-extension )
read-sub-blocks	( -- bytes )
read-table-based-image	( loading-gif -- loading-gif )
sort?	( image -- ? )
transparency?	( image -- ? )
unhandled-data	( byte -- * )
unimplemented	( message -- * )
unknown-extension	( n -- * )
unsupported-gif-format	( magic -- * )

Class predicate words

Word	Stack effect
application-extension?	( object -- ? )
comment-extension?	( object -- ? )
gif-frame?	( object -- ? )
gif-image?	( object -- ? )
gif-unexpected-eof?	( object -- ? )
graphics-control-extension?	( object -- ? )
image-descriptor?	( object -- ? )
loading-gif-error?	( object -- ? )
loading-gif?	( object -- ? )
plain-text-extension?	( object -- ? )
trailer?	( object -- ? )
unhandled-data?	( object -- ? )
unimplemented?	( object -- ? )
unknown-extension?	( object -- ? )
unsupported-gif-format?	( object -- ? )

Files

resource:extra/images/gif/gif.factor
resource:extra/images/gif/gif-docs.factor
resource:extra/images/gif/gif-tests.factor

Metadata files

resource:extra/images/gif/authors.txt
resource:extra/images/gif/summary.txt
resource:extra/images/gif/tags.txt