54 lines
1.4 KiB
Dart
54 lines
1.4 KiB
Dart
part of photogallery;
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/// Fetches the given image from the gallery.
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class PhotoProvider extends ImageProvider<PhotoProvider> {
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/// ImageProvider of photo
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PhotoProvider({
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required this.mediumId,
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this.mimeType,
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});
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/// Medium id
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final String mediumId;
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/// Mime type
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final String? mimeType;
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@override
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ImageStreamCompleter loadImage(key, decode) {
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return MultiFrameImageStreamCompleter(
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codec: _loadAsync(key, decode),
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scale: 1.0,
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informationCollector: () sync* {
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yield ErrorDescription('Id: $mediumId');
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},
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);
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}
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Future<ui.Codec> _loadAsync(PhotoProvider key, ImageDecoderCallback decode) async {
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assert(key == this);
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final file = await PhotoGallery.getFile(
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mediumId: mediumId, mediumType: MediumType.image, mimeType: mimeType);
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ui.ImmutableBuffer buffer = await ui.ImmutableBuffer.fromFilePath(file.path);
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return decode(buffer);
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}
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@override
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Future<PhotoProvider> obtainKey(ImageConfiguration configuration) {
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return SynchronousFuture<PhotoProvider>(this);
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}
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@override
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bool operator ==(dynamic other) {
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if (other.runtimeType != runtimeType) return false;
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final PhotoProvider typedOther = other;
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return mediumId == typedOther.mediumId;
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}
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@override
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int get hashCode => mediumId.hashCode;
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@override
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String toString() => '$runtimeType("$mediumId")';
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}
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