27 lines
785 B
Dart
27 lines
785 B
Dart
part of 'image_request.dart';
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class ThumbhashImageRequest extends ImageRequest {
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final String thumbhash;
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ThumbhashImageRequest({required this.thumbhash});
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@override
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Future<ImageInfo?> load(ImageDecoderCallback decode, {double scale = 1.0}) async {
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if (_isCancelled) {
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return null;
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}
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final Map<String, int> info = await localImageApi.getThumbhash(thumbhash);
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final frame = await _firstFrame(
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await _codecFromDecodedPlatformImage(info["pointer"]!, info["width"]!, info["height"]!, info["rowBytes"]!),
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);
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return frame == null ? null : ImageInfo(image: frame.image, scale: scale);
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}
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@override
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Future<ui.Codec?> loadCodec() => throw UnsupportedError('Thumbhash does not support codec loading');
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@override
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void _onCancelled() {}
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}
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