MemoryImage class

Decodes the given Uint8List buffer as an image, associating it with the given scale.

The provided bytes buffer should not be changed after it is provided to a MemoryImage. To provide an ImageStream that represents an image that changes over time, consider creating a new subclass of ImageProvider whose load method returns a subclass of ImageStreamCompleter that can handle providing multiple images.

See also:

Inheritance

Constructors

MemoryImage(Uint8List bytes, {double scale: 1.0})
Creates an object that decodes a Uint8List buffer as an image. [...]
const

Properties

bytes Uint8List
The bytes to decode into an image.
final
hashCode int
The hash code for this object. [...]
read-only, override
scale double
The scale to place in the ImageInfo object of the image.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

load(MemoryImage key, DecoderCallback decode) ImageStreamCompleter
Converts a key into an ImageStreamCompleter, and begins fetching the image. [...]
override
obtainKey(ImageConfiguration configuration) Future<MemoryImage>
Converts an ImageProvider's settings plus an ImageConfiguration to a key that describes the precise image to load. [...]
override
toString() String
Returns a string representation of this object.
override
createStream(ImageConfiguration configuration) ImageStream
Called by resolve to create the ImageStream it returns. [...]
@protected, inherited
evict({ImageCache cache, ImageConfiguration configuration: ImageConfiguration.empty}) Future<bool>
Evicts an entry from the image cache. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
obtainCacheStatus({ImageConfiguration configuration, ImageErrorListener handleError}) Future<ImageCacheStatus>
Returns the cache location for the key that this ImageProvider creates. [...]
inherited
resolve(ImageConfiguration configuration) ImageStream
Resolves this image provider using the given configuration, returning an ImageStream. [...]
@nonVirtual, inherited
resolveStreamForKey(ImageConfiguration configuration, ImageStream stream, MemoryImage key, ImageErrorListener handleError) → void
Called by resolve with the key returned by obtainKey. [...]
@protected, inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
override