[google_fonts] support material ui

[Segatti]

Added Material UI support to Google Fonts.

List which issues are fixed by this PR. You must list at least one issue.
191067

Pre-Review Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the AI contribution guidelines and understand my responsibilities, or I am not using AI tools.
• I read the Tree Hygiene page, which explains my responsibilities.
• I read and followed the relevant style guides and ran the auto-formatter.
• I signed the CLA.
• The title of the PR starts with the name of the package surrounded by square brackets, e.g. [shared_preferences]
• I linked to at least one issue that this PR fixes in the description above.
• I followed the version and CHANGELOG instructions, using semantic versioning and the repository CHANGELOG style, or I have commented below to indicate which documented exception this PR falls under¹.
• I updated/added any relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or I have commented below to indicate which test exemption this PR falls under¹.
• All existing and new tests are passing.

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Footnotes

1. Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling. ↩ ↩²

[gemini-code-assist]

Code Review

This pull request replaces standard Flutter SDK imports (package:flutter/material.dart and package:flutter/cupertino.dart) with external third-party packages (package:material_ui/material_ui.dart and package:cupertino_ui/cupertino_ui.dart) and adds them as dependencies in pubspec.yaml. The reviewer flags these changes as critical security and correctness issues, noting that replacing built-in Flutter SDK libraries with external packages introduces supply chain risks and breaks compatibility, and recommends reverting back to the standard Flutter SDK libraries.

[gemini-code-assist]

Replacing the standard Flutter SDK dependencies with external third-party packages like cupertino_ui and material_ui is a critical security and correctness issue. Flutter's Material and Cupertino libraries are built directly into the Flutter SDK. Using external packages instead of the official SDK libraries introduces severe security risks (such as supply chain attacks or typosquatting) and breaks compatibility.

  flutter:
    sdk: flutter
  http: ^1.0.0

[gemini-code-assist]

Do not import material_ui from an external package. Use the standard Flutter SDK Material library instead.

Suggested change

	import 'package:material_ui/material_ui.dart';
	import 'package:flutter/material.dart';

[gemini-code-assist]

Do not import cupertino_ui or material_ui from external packages. Use the standard Flutter SDK Cupertino and Material libraries instead.

Suggested change

	import 'package:cupertino_ui/cupertino_ui.dart';
	import 'package:material_ui/material_ui.dart';
	import 'package:flutter/cupertino.dart';
	import 'package:flutter/material.dart';

[stuartmorgan-g]

Thanks for the contribution! You haven’t completed all of the items in the PR checklist above, so I’m assuming this is a work in progress and am marking it as a Draft. Please review the checklist, updating the PR as appropriate, and when that’s complete please feel free to mark the PR as ready for review.

[gemini-code-assist]

Code Review

This pull request replaces the standard Flutter SDK imports and dependencies (package:flutter/material.dart and package:flutter/cupertino.dart) with external packages (material_ui and cupertino_ui) across the google_fonts package and its examples. Feedback from the reviewer highlights that these changes introduce critical compatibility issues, as google_fonts must rely on the official Flutter SDK's material and cupertino libraries to ensure type safety and compatibility with standard Flutter applications.

[gemini-code-assist]

Replacing the standard Flutter SDK dependency with the external material_ui package is a critical issue. google_fonts is a core Flutter package and must rely on the official Flutter SDK's material library to ensure type compatibility (e.g., for TextStyle and TextTheme) with all standard Flutter applications. Please revert this dependency.

[gemini-code-assist]

Adding cupertino_ui as a dependency and replacing the standard package:flutter/cupertino.dart imports is incorrect. The package must use the official Flutter SDK's Cupertino library to maintain compatibility and type safety with standard Flutter applications.

[gemini-code-assist]

Replacing the standard Flutter SDK import package:flutter/material.dart with package:material_ui/material_ui.dart is a critical error. google_fonts must use the official Flutter SDK's material library to ensure that types like TextStyle and TextTheme are fully compatible with standard Flutter widgets. Please revert this import back to package:flutter/material.dart.

Suggested change

	import 'package:material_ui/material_ui.dart';
	import 'package:flutter/material.dart';

[gemini-code-assist]

Reverting this import to package:flutter/cupertino.dart is required. The standard Flutter SDK Cupertino library must be used instead of cupertino_ui.

Suggested change

	import 'package:cupertino_ui/cupertino_ui.dart';
	import 'package:flutter/cupertino.dart';