37 lines
1.0 KiB
Racket
37 lines
1.0 KiB
Racket
#lang scribble/doc
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@(require scribble/manual
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scribble/extract
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(for-label net/gifwrite))
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@title[#:tag "gifwrite"]{GIF: Writing Image Files}
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@defmodule[net/gifwrite]
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The @schememodname[net/gifwrite] library provides functions for
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writing GIF files to a stream, including GIF files with multiple
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images and controls (such as animated GIFs).
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A GIF stream is created by @scheme[gif-start], and then individual
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images are written with @scheme[gif-add-image]. Optionally,
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@scheme[gif-add-control] inserts instructions for rendering the
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images. The @scheme[gif-end] function ends the GIF stream.
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A GIF stream can be in any one of the following states:
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@itemize{
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@item{@scheme['init] : no images or controls have been added to the
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stream}
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@item{@scheme['image-or-control] : another image or control can be
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written}
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@item{@scheme['image] : another image can be written (but not a
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control, since a control was written)}
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@item{@scheme['done] : nothing more can be added}
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}
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@(include-extracted "../gifwrite.ss")
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