ThumbnailProvider class
Fetches the given medium thumbnail from the gallery.
- Inheritance
-
- Object
- ImageProvider<
ThumbnailProvider> - ThumbnailProvider
Constructors
- ThumbnailProvider({required String mediumId, MediumType? mediumType, int? height, int? width, bool? highQuality = false})
-
ImageProvider of medium thumbnail
const
Properties
- hashCode → int
-
The hash code for this object.
no setteroverride
- height → int?
-
Height of medium thumbnail
final
- highQuality → bool?
-
Whether using high quality of medium thumbnail
final
- mediumId → String
-
Medium id
final
- mediumType → MediumType?
-
Medium type
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- width → int?
-
Width of medium thumbnail
final
Methods
-
createStream(
ImageConfiguration configuration) → ImageStream -
Called by resolve to create the ImageStream it returns.
inherited
-
evict(
{ImageCache? cache, ImageConfiguration configuration = ImageConfiguration.empty}) → Future< bool> -
Evicts an entry from the image cache.
inherited
-
loadBuffer(
ThumbnailProvider key, DecoderBufferCallback decode) → ImageStreamCompleter -
Converts a key into an ImageStreamCompleter, and begins fetching the
image.
inherited
-
loadImage(
ThumbnailProvider key, ImageDecoderCallback decode) → ImageStreamCompleter -
Converts a key into an ImageStreamCompleter, and begins fetching the
image.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
obtainCacheStatus(
{required ImageConfiguration configuration, ImageErrorListener? handleError}) → Future< ImageCacheStatus?> -
Returns the cache location for the key that this ImageProvider creates.
inherited
-
obtainKey(
ImageConfiguration configuration) → Future< ThumbnailProvider> -
Converts an ImageProvider's settings plus an ImageConfiguration to a key
that describes the precise image to load.
override
-
resolve(
ImageConfiguration configuration) → ImageStream -
Resolves this image provider using the given
configuration, returning an ImageStream.inherited -
resolveStreamForKey(
ImageConfiguration configuration, ImageStream stream, ThumbnailProvider key, ImageErrorListener handleError) → void -
Called by resolve with the key returned by obtainKey.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override