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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
70 lines
2.4 KiB
Dart
70 lines
2.4 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'rendering_tester.dart';
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int countSemanticsChildren(RenderObject object) {
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int count = 0;
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object.visitChildrenForSemantics((RenderObject child) {
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count += 1;
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});
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return count;
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}
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void main() {
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TestRenderingFlutterBinding.ensureInitialized();
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test('RenderOpacity and children and semantics', () {
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final RenderOpacity box = RenderOpacity(
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child: RenderParagraph(const TextSpan(), textDirection: TextDirection.ltr),
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);
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expect(countSemanticsChildren(box), 1);
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box.opacity = 0.5;
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expect(countSemanticsChildren(box), 1);
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box.opacity = 0.25;
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expect(countSemanticsChildren(box), 1);
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box.opacity = 0.125;
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expect(countSemanticsChildren(box), 1);
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box.opacity = 0.0;
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expect(countSemanticsChildren(box), 0);
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box.opacity = 0.125;
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expect(countSemanticsChildren(box), 1);
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box.opacity = 0.0;
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expect(countSemanticsChildren(box), 0);
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});
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test('RenderOpacity and children and semantics', () {
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final AnimationController controller = AnimationController(vsync: const TestVSync());
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final RenderAnimatedOpacity box = RenderAnimatedOpacity(
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opacity: controller,
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child: RenderParagraph(const TextSpan(), textDirection: TextDirection.ltr),
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);
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expect(countSemanticsChildren(box), 0); // controller defaults to 0.0
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controller.value = 0.2; // has no effect, box isn't subscribed yet
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expect(countSemanticsChildren(box), 0);
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controller.value = 1.0; // ditto
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expect(countSemanticsChildren(box), 0); // alpha is still 0
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layout(box); // this causes the box to attach, which makes it subscribe
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expect(countSemanticsChildren(box), 1);
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controller.value = 1.0;
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expect(countSemanticsChildren(box), 1);
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controller.value = 0.5;
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expect(countSemanticsChildren(box), 1);
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controller.value = 0.25;
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expect(countSemanticsChildren(box), 1);
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controller.value = 0.125;
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expect(countSemanticsChildren(box), 1);
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controller.value = 0.0;
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expect(countSemanticsChildren(box), 0);
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controller.value = 0.125;
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expect(countSemanticsChildren(box), 1);
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controller.value = 0.0;
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expect(countSemanticsChildren(box), 0);
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});
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}
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