#[repr(u8)]
pub enum Extension {
Text,
Control,
Comment,
Application,
}
Expand description
Known GIF extension labels.
These are extensions which may be interpreted by the library and to which a specification with
the internal data layout is known.
Plain Text extension.
This instructs the decoder to render a text as characters in a grid of cells, in a
mono-spaced font of its choosing. This is seldom actually implemented and ignored by
ImageMagick. The color is always taken from the global table which further complicates any
use. No real information on the frame sequencing of this block is available in the
standard.
Application extension.
See ImageMagick for an idea of commonly recognized extensions.
Converts u8
to a Extension
if it is known.
Performs copy-assignment from
source
.
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Formats the value using the given formatter.
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Converts to this type from the input type.
This method tests for self
and other
values to be equal, and is used
by ==
.
This method tests for !=
. The default implementation is almost always
sufficient, and should not be overridden without very good reason.
Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning.
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Uses borrowed data to replace owned data, usually by cloning.
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The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.