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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>
238 lines
10 KiB
Dart
238 lines
10 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/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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Offset round(Offset value) {
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return Offset(value.dx.roundToDouble(), value.dy.roundToDouble());
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}
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void main() {
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TestRenderingFlutterBinding.ensureInitialized();
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test('RenderTransform - identity', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: Matrix4.identity(),
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alignment: Alignment.center,
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child: inner = RenderSizedBox(const Size(100.0, 100.0)),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(inner.globalToLocal(Offset.zero), equals(Offset.zero));
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expect(inner.globalToLocal(const Offset(100.0, 100.0)), equals(const Offset(100.0, 100.0)));
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expect(inner.globalToLocal(const Offset(25.0, 75.0)), equals(const Offset(25.0, 75.0)));
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expect(inner.globalToLocal(const Offset(50.0, 50.0)), equals(const Offset(50.0, 50.0)));
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expect(inner.localToGlobal(Offset.zero), equals(Offset.zero));
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expect(inner.localToGlobal(const Offset(100.0, 100.0)), equals(const Offset(100.0, 100.0)));
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expect(inner.localToGlobal(const Offset(25.0, 75.0)), equals(const Offset(25.0, 75.0)));
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expect(inner.localToGlobal(const Offset(50.0, 50.0)), equals(const Offset(50.0, 50.0)));
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});
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test('RenderTransform - identity with internal offset', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: Matrix4.identity(),
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alignment: Alignment.center,
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child: RenderPadding(
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padding: const EdgeInsets.only(left: 20.0),
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child: inner = RenderSizedBox(const Size(80.0, 100.0)),
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),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(inner.globalToLocal(Offset.zero), equals(const Offset(-20.0, 0.0)));
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expect(inner.globalToLocal(const Offset(100.0, 100.0)), equals(const Offset(80.0, 100.0)));
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expect(inner.globalToLocal(const Offset(25.0, 75.0)), equals(const Offset(5.0, 75.0)));
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expect(inner.globalToLocal(const Offset(50.0, 50.0)), equals(const Offset(30.0, 50.0)));
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expect(inner.localToGlobal(Offset.zero), equals(const Offset(20.0, 0.0)));
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expect(inner.localToGlobal(const Offset(100.0, 100.0)), equals(const Offset(120.0, 100.0)));
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expect(inner.localToGlobal(const Offset(25.0, 75.0)), equals(const Offset(45.0, 75.0)));
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expect(inner.localToGlobal(const Offset(50.0, 50.0)), equals(const Offset(70.0, 50.0)));
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});
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test('RenderTransform - translation', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: Matrix4.translationValues(50.0, 200.0, 0.0),
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alignment: Alignment.center,
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child: inner = RenderSizedBox(const Size(100.0, 100.0)),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(inner.globalToLocal(Offset.zero), equals(const Offset(-50.0, -200.0)));
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expect(inner.globalToLocal(const Offset(100.0, 100.0)), equals(const Offset(50.0, -100.0)));
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expect(inner.globalToLocal(const Offset(25.0, 75.0)), equals(const Offset(-25.0, -125.0)));
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expect(inner.globalToLocal(const Offset(50.0, 50.0)), equals(const Offset(0.0, -150.0)));
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expect(inner.localToGlobal(Offset.zero), equals(const Offset(50.0, 200.0)));
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expect(inner.localToGlobal(const Offset(100.0, 100.0)), equals(const Offset(150.0, 300.0)));
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expect(inner.localToGlobal(const Offset(25.0, 75.0)), equals(const Offset(75.0, 275.0)));
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expect(inner.localToGlobal(const Offset(50.0, 50.0)), equals(const Offset(100.0, 250.0)));
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});
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test('RenderTransform - translation with internal offset', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: Matrix4.translationValues(50.0, 200.0, 0.0),
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alignment: Alignment.center,
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child: RenderPadding(
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padding: const EdgeInsets.only(left: 20.0),
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child: inner = RenderSizedBox(const Size(80.0, 100.0)),
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),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(inner.globalToLocal(Offset.zero), equals(const Offset(-70.0, -200.0)));
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expect(inner.globalToLocal(const Offset(100.0, 100.0)), equals(const Offset(30.0, -100.0)));
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expect(inner.globalToLocal(const Offset(25.0, 75.0)), equals(const Offset(-45.0, -125.0)));
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expect(inner.globalToLocal(const Offset(50.0, 50.0)), equals(const Offset(-20.0, -150.0)));
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expect(inner.localToGlobal(Offset.zero), equals(const Offset(70.0, 200.0)));
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expect(inner.localToGlobal(const Offset(100.0, 100.0)), equals(const Offset(170.0, 300.0)));
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expect(inner.localToGlobal(const Offset(25.0, 75.0)), equals(const Offset(95.0, 275.0)));
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expect(inner.localToGlobal(const Offset(50.0, 50.0)), equals(const Offset(120.0, 250.0)));
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});
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test('RenderTransform - rotation', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: Matrix4.rotationZ(math.pi),
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alignment: Alignment.center,
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child: inner = RenderSizedBox(const Size(100.0, 100.0)),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(round(inner.globalToLocal(Offset.zero)), equals(const Offset(100.0, 100.0)));
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expect(round(inner.globalToLocal(const Offset(100.0, 100.0))), equals(Offset.zero));
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expect(round(inner.globalToLocal(const Offset(25.0, 75.0))), equals(const Offset(75.0, 25.0)));
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expect(round(inner.globalToLocal(const Offset(50.0, 50.0))), equals(const Offset(50.0, 50.0)));
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expect(round(inner.localToGlobal(Offset.zero)), equals(const Offset(100.0, 100.0)));
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expect(round(inner.localToGlobal(const Offset(100.0, 100.0))), equals(Offset.zero));
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expect(round(inner.localToGlobal(const Offset(25.0, 75.0))), equals(const Offset(75.0, 25.0)));
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expect(round(inner.localToGlobal(const Offset(50.0, 50.0))), equals(const Offset(50.0, 50.0)));
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});
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test('RenderTransform - rotation with internal offset', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: Matrix4.rotationZ(math.pi),
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alignment: Alignment.center,
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child: RenderPadding(
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padding: const EdgeInsets.only(left: 20.0),
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child: inner = RenderSizedBox(const Size(80.0, 100.0)),
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),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(round(inner.globalToLocal(Offset.zero)), equals(const Offset(80.0, 100.0)));
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expect(
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round(inner.globalToLocal(const Offset(100.0, 100.0))),
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equals(const Offset(-20.0, 0.0)),
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);
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expect(round(inner.globalToLocal(const Offset(25.0, 75.0))), equals(const Offset(55.0, 25.0)));
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expect(round(inner.globalToLocal(const Offset(50.0, 50.0))), equals(const Offset(30.0, 50.0)));
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expect(round(inner.localToGlobal(Offset.zero)), equals(const Offset(80.0, 100.0)));
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expect(
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round(inner.localToGlobal(const Offset(100.0, 100.0))),
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equals(const Offset(-20.0, 0.0)),
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);
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expect(round(inner.localToGlobal(const Offset(25.0, 75.0))), equals(const Offset(55.0, 25.0)));
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expect(round(inner.localToGlobal(const Offset(50.0, 50.0))), equals(const Offset(30.0, 50.0)));
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});
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test('RenderTransform - perspective - globalToLocal', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: rotateAroundXAxis(math.pi * 0.25), // at pi/4, we are about 70 pixels high
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alignment: Alignment.center,
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child: inner = RenderSizedBox(const Size(100.0, 100.0)),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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expect(round(inner.globalToLocal(const Offset(25.0, 50.0))), equals(const Offset(25.0, 50.0)));
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expect(inner.globalToLocal(const Offset(25.0, 17.0)).dy, greaterThan(0.0));
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expect(inner.globalToLocal(const Offset(25.0, 17.0)).dy, lessThan(10.0));
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expect(inner.globalToLocal(const Offset(25.0, 83.0)).dy, greaterThan(90.0));
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expect(inner.globalToLocal(const Offset(25.0, 83.0)).dy, lessThan(100.0));
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expect(
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round(inner.globalToLocal(const Offset(25.0, 17.0))).dy,
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equals(100 - round(inner.globalToLocal(const Offset(25.0, 83.0))).dy),
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);
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});
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test('RenderTransform - perspective - localToGlobal', () {
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RenderBox inner;
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final RenderBox sizer = RenderTransform(
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transform: rotateAroundXAxis(math.pi * 0.4999), // at pi/2, we're seeing the box on its edge,
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alignment: Alignment.center,
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child: inner = RenderSizedBox(const Size(100.0, 100.0)),
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);
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layout(
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sizer,
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constraints: BoxConstraints.tight(const Size(100.0, 100.0)),
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alignment: Alignment.topLeft,
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);
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// the inner widget has a height of about half a pixel at this rotation, so
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// everything should end up around the middle of the outer box.
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expect(inner.localToGlobal(const Offset(25.0, 50.0)), equals(const Offset(25.0, 50.0)));
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expect(round(inner.localToGlobal(const Offset(25.0, 75.0))), equals(const Offset(25.0, 50.0)));
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expect(round(inner.localToGlobal(const Offset(25.0, 100.0))), equals(const Offset(25.0, 50.0)));
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});
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}
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Matrix4 rotateAroundXAxis(double a) {
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// 3D rotation transform with alpha=a
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const double x = 1.0;
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const double y = 0.0;
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const double z = 0.0;
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final double sc = math.sin(a / 2.0) * math.cos(a / 2.0);
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final double sq = math.sin(a / 2.0) * math.sin(a / 2.0);
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return Matrix4.fromList(<double>[
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// col 1
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1.0 - 2.0 * (y * y + z * z) * sq,
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2.0 * (x * y * sq + z * sc),
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2.0 * (x * z * sq - y * sc),
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0.0,
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// col 2
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2.0 * (x * y * sq - z * sc),
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1.0 - 2.0 * (x * x + z * z) * sq,
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2.0 * (y * z * sq + x * sc),
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0.0,
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// col 3
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2.0 * (x * z * sq + y * sc),
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2.0 * (y * z * sq - x * sc),
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1.0 - 2.0 * (x * x + z * z) * sq,
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0.0,
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// col 4
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0.0, 0.0, 0.0, 1.0,
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]);
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}
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