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WIP Commits separated as follows: - Update lints in analysis_options files - Run `dart fix --apply` - Clean up leftover analysis issues - Run `dart format .` in the right places. Local analysis and testing passes. Checking CI now. Part of https://github.com/flutter/flutter/issues/178827 - Adoption of flutter_lints in examples/api coming in a separate change (cc @loic-sharma) ## Pre-launch Checklist - [ ] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [ ] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [ ] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [ ] I signed the [CLA]. - [ ] I listed at least one issue that this PR fixes in the description above. - [ ] I updated/added relevant documentation (doc comments with `///`). - [ ] I added new tests to check the change I am making, or this PR is [test-exempt]. - [ ] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
770 lines
24 KiB
Dart
770 lines
24 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 'dart:math' as math;
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import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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final Matcher doesNotOverscroll = isNot(paints..circle());
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Future<void> slowDrag(WidgetTester tester, Offset start, Offset offset) async {
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final TestGesture gesture = await tester.startGesture(start);
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for (var index = 0; index < 10; index += 1) {
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await gesture.moveBy(offset);
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await tester.pump(const Duration(milliseconds: 20));
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}
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await gesture.up();
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}
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void main() {
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testWidgets('Overscroll indicator color', (WidgetTester tester) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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expect(painter, doesNotOverscroll);
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// the scroll gesture from tester.scroll happens in zero time, so nothing should appear:
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await tester.drag(find.byType(Scrollable), const Offset(0.0, 100.0));
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expect(painter, doesNotOverscroll);
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await tester.pump(); // allow the ticker to register itself
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expect(painter, doesNotOverscroll);
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await tester.pump(const Duration(milliseconds: 100)); // animate
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expect(painter, doesNotOverscroll);
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final TestGesture gesture = await tester.startGesture(const Offset(200.0, 200.0));
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await tester.pump(const Duration(milliseconds: 100)); // animate
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expect(painter, doesNotOverscroll);
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await gesture.up();
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expect(painter, doesNotOverscroll);
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
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expect(painter, paints..circle(color: const Color(0x0DFFFFFF)));
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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testWidgets('Nested scrollable', (WidgetTester tester) async {
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: GlowingOverscrollIndicator(
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axisDirection: AxisDirection.down,
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color: const Color(0x0DFFFFFF),
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notificationPredicate: (ScrollNotification notification) => notification.depth == 1,
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child: const SingleChildScrollView(
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scrollDirection: Axis.horizontal,
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child: SizedBox(
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width: 600.0,
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child: CustomScrollView(
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
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),
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),
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),
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),
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),
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);
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final RenderObject outerPainter = tester.renderObject(find.byType(CustomPaint).first);
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final RenderObject innerPainter = tester.renderObject(find.byType(CustomPaint).last);
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
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expect(outerPainter, paints..circle());
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expect(innerPainter, paints..circle());
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});
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testWidgets('Overscroll indicator changes side when you drag on the other side', (
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WidgetTester tester,
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) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(400.0, 200.0), const Offset(0.0, 10.0));
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expect(painter, paints..circle(x: 400.0));
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await slowDrag(tester, const Offset(100.0, 200.0), const Offset(0.0, 10.0));
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expect(
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painter,
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paints..something((Symbol method, List<dynamic> arguments) {
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if (method != #drawCircle) {
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return false;
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}
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final center = arguments[0] as Offset;
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if (center.dx < 400.0) {
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return true;
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}
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throw 'Dragging on left hand side did not overscroll on left hand side.';
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}),
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);
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await slowDrag(tester, const Offset(700.0, 200.0), const Offset(0.0, 10.0));
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expect(
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painter,
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paints..something((Symbol method, List<dynamic> arguments) {
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if (method != #drawCircle) {
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return false;
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}
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final center = arguments[0] as Offset;
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if (center.dx > 400.0) {
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return true;
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}
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throw 'Dragging on right hand side did not overscroll on right hand side.';
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}),
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);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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testWidgets('Overscroll indicator changes side when you shift sides', (
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WidgetTester tester,
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) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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final TestGesture gesture = await tester.startGesture(const Offset(300.0, 200.0));
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await gesture.moveBy(const Offset(0.0, 10.0));
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await tester.pump(const Duration(milliseconds: 20));
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var oldX = 0.0;
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for (var index = 0; index < 10; index += 1) {
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await gesture.moveBy(const Offset(50.0, 50.0));
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await tester.pump(const Duration(milliseconds: 20));
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expect(
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painter,
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paints..something((Symbol method, List<dynamic> arguments) {
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if (method != #drawCircle) {
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return false;
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}
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final center = arguments[0] as Offset;
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if (center.dx <= oldX) {
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throw 'Sliding to the right did not make the center of the radius slide to the right.';
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}
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oldX = center.dx;
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return true;
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}),
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);
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}
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await gesture.up();
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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group("Flipping direction of scrollable doesn't change overscroll behavior", () {
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testWidgets('down', (WidgetTester tester) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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physics: AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
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expect(
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painter,
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paints
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..save()
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..circle()
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..restore()
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..save()
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..scale(y: -1.0)
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..restore()
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..restore(),
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);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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testWidgets('up', (WidgetTester tester) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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reverse: true,
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physics: AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
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expect(
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painter,
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paints
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..save()
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..scale(y: -1.0)
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..restore()
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..save()
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..circle()
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..restore()
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..restore(),
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);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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});
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testWidgets('Overscroll in both directions', (WidgetTester tester) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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physics: AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
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expect(painter, paints..circle());
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expect(
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painter,
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isNot(
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paints
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..circle()
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..circle(),
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),
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);
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, -5.0));
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expect(
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painter,
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paints
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..circle()
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..circle(),
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);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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testWidgets('Overscroll ignored from alternate axis', (WidgetTester tester) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: ScrollConfiguration(
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behavior: TestScrollBehaviorNoGlow(),
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child: GlowingOverscrollIndicator(
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axisDirection: AxisDirection.right,
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color: Color(0xFF0000FF),
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child: CustomScrollView(
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physics: AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
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expect(painter, doesNotOverscroll);
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, -5.0));
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expect(painter, doesNotOverscroll);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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testWidgets('Overscroll horizontally', (WidgetTester tester) async {
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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scrollDirection: Axis.horizontal,
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physics: AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(5.0, 0.0));
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expect(
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painter,
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paints
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..rotate(angle: math.pi / 2.0)
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..circle()
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..saveRestore(),
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);
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expect(
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painter,
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isNot(
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paints
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..circle()
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..circle(),
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),
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);
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(-5.0, 0.0));
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expect(
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painter,
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paints
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..rotate(angle: math.pi / 2.0)
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..circle()
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..rotate(angle: math.pi / 2.0)
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..circle(),
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);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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expect(painter, doesNotOverscroll);
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});
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testWidgets('Nested overscrolls do not throw exceptions', (WidgetTester tester) async {
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: PageView(
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children: <Widget>[
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ListView(
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children: <Widget>[
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Container(width: 2000.0, height: 2000.0, color: const Color(0xFF00FF00)),
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],
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),
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],
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),
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),
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);
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await tester.dragFrom(const Offset(100.0, 100.0), const Offset(0.0, 2000.0));
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await tester.pumpAndSettle();
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});
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testWidgets('Changing settings', (WidgetTester tester) async {
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RenderObject painter;
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: ScrollConfiguration(
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behavior: TestScrollBehavior1(),
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child: CustomScrollView(
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scrollDirection: Axis.horizontal,
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physics: AlwaysScrollableScrollPhysics(),
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reverse: true,
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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),
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);
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painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(5.0, 0.0));
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expect(
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painter,
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paints
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..rotate(angle: math.pi / 2.0)
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..circle(color: const Color(0x0A00FF00)),
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);
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expect(
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painter,
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isNot(
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paints
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..circle()
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..circle(),
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),
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);
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await tester.pumpAndSettle(const Duration(seconds: 1));
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await tester.pumpWidget(
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const Directionality(
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textDirection: TextDirection.ltr,
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child: ScrollConfiguration(
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behavior: TestScrollBehavior2(),
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child: CustomScrollView(
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scrollDirection: Axis.horizontal,
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physics: AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 20.0))],
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),
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),
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),
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);
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painter = tester.renderObject(find.byType(CustomPaint));
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(5.0, 0.0));
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expect(
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painter,
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paints
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..rotate(angle: math.pi / 2.0)
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..circle(color: const Color(0x0A0000FF))
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..saveRestore(),
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);
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expect(
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painter,
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isNot(
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paints
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..circle()
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..circle(),
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),
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);
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});
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testWidgets('CustomScrollView overscroll indicator works if there is sliver before center', (
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WidgetTester tester,
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) async {
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final Key centerKey = UniqueKey();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: ScrollConfiguration(
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behavior: const TestScrollBehavior2(),
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child: CustomScrollView(
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center: centerKey,
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physics: const AlwaysScrollableScrollPhysics(),
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slivers: <Widget>[
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SliverList.builder(
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itemCount: 2,
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itemBuilder: (BuildContext context, int index) => Text('First sliver $index'),
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),
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SliverList.builder(
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key: centerKey,
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itemCount: 5,
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itemBuilder: (BuildContext context, int index) => Text('Second sliver $index'),
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),
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],
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),
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),
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),
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);
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expect(find.text('First sliver 1'), findsNothing);
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await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 300.0));
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expect(find.text('First sliver 1'), findsOneWidget);
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final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
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// The scroll offset and paint extend should cancel out each other.
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expect(
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painter,
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paints
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..save()
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..translate(y: 0.0)
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..scale()
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..circle(),
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);
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});
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testWidgets(
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'CustomScrollView overscroll indicator works well with [CustomScrollView.center] and [OverscrollIndicatorNotification.paintOffset]',
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(WidgetTester tester) async {
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final Key centerKey = UniqueKey();
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await tester.pumpWidget(
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|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: ScrollConfiguration(
|
|
behavior: const TestScrollBehavior2(),
|
|
child: NotificationListener<OverscrollIndicatorNotification>(
|
|
onNotification: (OverscrollIndicatorNotification notification) {
|
|
if (notification.leading) {
|
|
notification.paintOffset = 50.0;
|
|
}
|
|
return false;
|
|
},
|
|
child: CustomScrollView(
|
|
center: centerKey,
|
|
physics: const AlwaysScrollableScrollPhysics(),
|
|
slivers: <Widget>[
|
|
SliverList.builder(
|
|
itemCount: 2,
|
|
itemBuilder: (BuildContext context, int index) => Text('First sliver $index'),
|
|
),
|
|
SliverList.builder(
|
|
key: centerKey,
|
|
itemCount: 5,
|
|
itemBuilder: (BuildContext context, int index) => Text('Second sliver $index'),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(find.text('First sliver 1'), findsNothing);
|
|
|
|
await slowDrag(
|
|
tester,
|
|
const Offset(200.0, 200.0),
|
|
const Offset(0.0, 5.0),
|
|
); // offset will be magnified ten times
|
|
expect(find.text('First sliver 1'), findsOneWidget);
|
|
final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
|
|
// The OverscrollIndicator should respect the [OverscrollIndicatorNotification.paintOffset] setting.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
},
|
|
);
|
|
|
|
testWidgets('The OverscrollIndicator should not overflow the scrollable view edge', (
|
|
WidgetTester tester,
|
|
) async {
|
|
// Regressing test for https://github.com/flutter/flutter/issues/64149
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: NotificationListener<OverscrollIndicatorNotification>(
|
|
onNotification: (OverscrollIndicatorNotification notification) {
|
|
notification.paintOffset =
|
|
50.0; // both the leading and trailing indicator have a 50.0 pixels offset.
|
|
return false;
|
|
},
|
|
child: const CustomScrollView(
|
|
slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
|
|
await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
// Reverse scroll (30 pixels), and the offset < notification.paintOffset.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, -30.0));
|
|
await tester.pump();
|
|
// The OverscrollIndicator should move with the CustomScrollView.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0 - 30.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
|
|
// Reverse scroll (30+20 pixels) and offset == notification.paintOffset.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, -20.0));
|
|
await tester.pump();
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0 - 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
|
|
// Reverse scroll (30+20+10 pixels) and offset > notification.paintOffset.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, -10.0));
|
|
await tester.pump();
|
|
// The OverscrollIndicator should not overflow the CustomScrollView's edge.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0 - 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
|
|
await tester.pumpAndSettle(); // Finish the leading indicator.
|
|
|
|
// trigger the trailing indicator
|
|
await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, -200.0));
|
|
expect(
|
|
painter,
|
|
paints
|
|
..scale(y: -1.0)
|
|
..save()
|
|
..translate(y: 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
|
|
// Reverse scroll (30 pixels), and the offset < notification.paintOffset.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, 30.0));
|
|
await tester.pump();
|
|
// The OverscrollIndicator should move with the CustomScrollView.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..scale(y: -1.0)
|
|
..save()
|
|
..translate(y: 50.0 - 30.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
|
|
// Reverse scroll (30+20 pixels) and offset == notification.paintOffset.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, 20.0));
|
|
await tester.pump();
|
|
expect(
|
|
painter,
|
|
paints
|
|
..scale(y: -1.0)
|
|
..save()
|
|
..translate(y: 50.0 - 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
|
|
// Reverse scroll (30+20+10 pixels) and offset > notification.paintOffset.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, 10.0));
|
|
await tester.pump();
|
|
// The OverscrollIndicator should not overflow the CustomScrollView's edge.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..scale(y: -1.0)
|
|
..save()
|
|
..translate(y: 50.0 - 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
});
|
|
|
|
group('[OverscrollIndicatorNotification.paintOffset] test', () {
|
|
testWidgets('Leading', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: NotificationListener<OverscrollIndicatorNotification>(
|
|
onNotification: (OverscrollIndicatorNotification notification) {
|
|
if (notification.leading) {
|
|
notification.paintOffset = 50.0;
|
|
}
|
|
return false;
|
|
},
|
|
child: const CustomScrollView(
|
|
slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
|
|
await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, 5.0));
|
|
// The OverscrollIndicator should respect the [OverscrollIndicatorNotification.paintOffset] setting.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
// Reverse scroll direction.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, -30.0));
|
|
await tester.pump();
|
|
// The OverscrollIndicator should move with the CustomScrollView.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..save()
|
|
..translate(y: 50.0 - 30.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
});
|
|
|
|
testWidgets('Trailing', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: NotificationListener<OverscrollIndicatorNotification>(
|
|
onNotification: (OverscrollIndicatorNotification notification) {
|
|
if (!notification.leading) {
|
|
notification.paintOffset = 50.0;
|
|
}
|
|
return false;
|
|
},
|
|
child: const CustomScrollView(
|
|
slivers: <Widget>[SliverToBoxAdapter(child: SizedBox(height: 2000.0))],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
final RenderObject painter = tester.renderObject(find.byType(CustomPaint));
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(200.0, -10000.0));
|
|
await tester.pump();
|
|
await slowDrag(tester, const Offset(200.0, 200.0), const Offset(0.0, -5.0));
|
|
// The OverscrollIndicator should respect the [OverscrollIndicatorNotification.paintOffset] setting.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..scale(y: -1.0)
|
|
..save()
|
|
..translate(y: 50.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
// Reverse scroll direction.
|
|
await tester.dragFrom(const Offset(200.0, 200.0), const Offset(0.0, 30.0));
|
|
await tester.pump();
|
|
// The OverscrollIndicator should move with the CustomScrollView.
|
|
expect(
|
|
painter,
|
|
paints
|
|
..scale(y: -1.0)
|
|
..save()
|
|
..translate(y: 50.0 - 30.0)
|
|
..scale()
|
|
..circle(),
|
|
);
|
|
});
|
|
});
|
|
}
|
|
|
|
class TestScrollBehavior1 extends ScrollBehavior {
|
|
const TestScrollBehavior1();
|
|
|
|
@override
|
|
Widget buildOverscrollIndicator(BuildContext context, Widget child, ScrollableDetails details) {
|
|
return GlowingOverscrollIndicator(
|
|
axisDirection: details.direction,
|
|
color: const Color(0xFF00FF00),
|
|
child: child,
|
|
);
|
|
}
|
|
}
|
|
|
|
class TestScrollBehavior2 extends ScrollBehavior {
|
|
const TestScrollBehavior2();
|
|
|
|
@override
|
|
Widget buildOverscrollIndicator(BuildContext context, Widget child, ScrollableDetails details) {
|
|
return GlowingOverscrollIndicator(
|
|
axisDirection: details.direction,
|
|
color: const Color(0xFF0000FF),
|
|
child: child,
|
|
);
|
|
}
|
|
}
|
|
|
|
class TestScrollBehaviorNoGlow extends ScrollBehavior {
|
|
const TestScrollBehaviorNoGlow();
|
|
|
|
@override
|
|
Widget buildOverscrollIndicator(BuildContext context, Widget child, ScrollableDetails details) {
|
|
return child;
|
|
}
|
|
}
|