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Andrew Kolos 821422fa25 Add asset transformation sample (#2267 ) This adds a sample Flutter project that demonstrates a soon-to-be-released feature, asset transformation[^1]. [PR for flutter.dev documentation](https://github.com/flutter/website/pull/10471). This feature isn't the easiest to explain using documentation, so I think augmenting that documentation with a sample is appropriate. This sample demonstrates 1) how to use an existing Dart package (that is compatible with the feature) as an asset transformer and 2) how to write a Dart package that is compatible with this feature. This should be clear from the README.md. Advice for reviewing this PR. The goal here is that most users that read the documentation and follow the link from there to this sample should be able to figure out what the feature does and how to use it. Try to imagine yourself in this position and follow this story. If the feature is still unclear, then there is probably something we can do to improve this sample or the docs. Said more simply, follow these steps: 1) Start at the new section to be added to Flutter.dev (https://flutter-docs-prod--pr10471-document-asset-transformers-cc21qf01.web.app/ui/assets/assets-and-images#automatic-transformation-of-asset-files-at-build-time). It should naturally link you to the sample project. Start with the README and see if things make sense. ## Pre-launch Checklist - [X] I read the [Flutter Style Guide] _recently_, and have followed its advice. - [X] I signed the [CLA]. - [X] I read the [Contributors Guide]. - [X] I updated/added relevant documentation (doc comments with `///`). - [X] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-devrel channel on [Discord]. <!-- Links --> [Flutter Style Guide]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo [CLA]: https://cla.developers.google.com/ [Discord]: https://github.com/flutter/flutter/wiki/Chat [Contributors Guide]: https://github.com/flutter/samples/blob/main/CONTRIBUTING.md [^1]: If you are super curious about this feature, see [the tracking issue for its implementation](https://github.com/flutter/flutter/issues/143348). --------- Co-authored-by: Eric Windmill <eric@ericwindmill.com>		6 months ago
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android	Add asset transformation sample (#2267 )	6 months ago
assets	Add asset transformation sample (#2267 )	6 months ago
grayscale_transformer	Add asset transformation sample (#2267 )	6 months ago
ios	Add asset transformation sample (#2267 )	6 months ago
lib	Add asset transformation sample (#2267 )	6 months ago
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web	Add asset transformation sample (#2267 )	6 months ago
windows	Add asset transformation sample (#2267 )	6 months ago
.gitignore	Add asset transformation sample (#2267 )	6 months ago
.metadata	Add asset transformation sample (#2267 )	6 months ago
README.md	Add asset transformation sample (#2267 )	6 months ago
analysis_options.yaml	Add asset transformation sample (#2267 )	6 months ago
pubspec.yaml	Add asset transformation sample (#2267 )	6 months ago

README.md

asset_transformation

This project demonstrates the asset transformation feature. It includes an example of a custom Dart package that can be used as an asset transformer. It also shows how to transform an asset using a pub package that is compatible with the asset transformation feature.

See the assets section in pubspec.yaml to get started.