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449f4a6673
* Update project.pbxproj files to say Flutter rather than Chromium Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright. * Update the copyright notice checker to require a standard notice on all files * Update copyrights on Dart files. (This was a mechanical commit.) * Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine. Some were already marked "The Flutter Authors", not clear why. Their dates have been normalized. Some were missing the blank line after the license. Some were randomly different in trivial ways for no apparent reason (e.g. missing the trailing period). * Clean up the copyrights in non-Dart files. (Manual edits.) Also, make sure templates don't have copyrights. * Fix some more ORGANIZATIONNAMEs
358 lines
11 KiB
Dart
358 lines
11 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/rendering.dart';
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import 'package:flutter/animation.dart';
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import 'package:meta/meta.dart';
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import '../flutter_test_alternative.dart';
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import 'rendering_tester.dart';
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class TestRenderSliverBoxChildManager extends RenderSliverBoxChildManager {
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TestRenderSliverBoxChildManager({
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this.children,
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});
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RenderSliverList _renderObject;
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List<RenderBox> children;
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RenderSliverList createRenderObject() {
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assert(_renderObject == null);
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_renderObject = RenderSliverList(childManager: this);
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return _renderObject;
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}
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int _currentlyUpdatingChildIndex;
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@override
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void createChild(int index, { @required RenderBox after }) {
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if (index < 0 || index >= children.length)
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return;
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try {
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_currentlyUpdatingChildIndex = index;
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_renderObject.insert(children[index], after: after);
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} finally {
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_currentlyUpdatingChildIndex = null;
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}
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}
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@override
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void removeChild(RenderBox child) {
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_renderObject.remove(child);
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}
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@override
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double estimateMaxScrollOffset(
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SliverConstraints constraints, {
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int firstIndex,
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int lastIndex,
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double leadingScrollOffset,
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double trailingScrollOffset,
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}) {
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assert(lastIndex >= firstIndex);
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return children.length * (trailingScrollOffset - leadingScrollOffset) / (lastIndex - firstIndex + 1);
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}
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@override
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int get childCount => children.length;
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@override
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void didAdoptChild(RenderBox child) {
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assert(_currentlyUpdatingChildIndex != null);
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final SliverMultiBoxAdaptorParentData childParentData = child.parentData;
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childParentData.index = _currentlyUpdatingChildIndex;
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}
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@override
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void setDidUnderflow(bool value) { }
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}
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class ViewportOffsetSpy extends ViewportOffset {
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ViewportOffsetSpy(this._pixels);
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double _pixels;
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@override
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double get pixels => _pixels;
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bool corrected = false;
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@override
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bool applyViewportDimension(double viewportDimension) => true;
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@override
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bool applyContentDimensions(double minScrollExtent, double maxScrollExtent) => true;
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@override
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void correctBy(double correction) {
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_pixels += correction;
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corrected = true;
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}
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@override
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void jumpTo(double pixels) {
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// Do nothing, not required in test.
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}
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@override
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Future<void> animateTo(
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double to, {
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@required Duration duration,
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@required Curve curve,
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}) async {
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// Do nothing, not required in test.
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}
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@override
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ScrollDirection get userScrollDirection => ScrollDirection.idle;
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@override
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bool get allowImplicitScrolling => false;
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}
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void main() {
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test('RenderSliverList basic test - down', () {
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RenderObject inner;
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RenderBox a, b, c, d, e;
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final TestRenderSliverBoxChildManager childManager = TestRenderSliverBoxChildManager(
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children: <RenderBox>[
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a = RenderSizedBox(const Size(100.0, 400.0)),
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b = RenderSizedBox(const Size(100.0, 400.0)),
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c = RenderSizedBox(const Size(100.0, 400.0)),
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d = RenderSizedBox(const Size(100.0, 400.0)),
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e = RenderSizedBox(const Size(100.0, 400.0)),
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],
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);
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final RenderViewport root = RenderViewport(
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axisDirection: AxisDirection.down,
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crossAxisDirection: AxisDirection.right,
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offset: ViewportOffset.zero(),
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cacheExtent: 0.0,
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children: <RenderSliver>[
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inner = childManager.createRenderObject(),
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],
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);
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layout(root);
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expect(root.size.width, equals(800.0));
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expect(root.size.height, equals(600.0));
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 0.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 400.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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// make sure that layout is stable by laying out again
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inner.markNeedsLayout();
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pumpFrame();
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 0.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 400.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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// now try various scroll offsets
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root.offset = ViewportOffset.fixed(200.0);
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pumpFrame();
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -200.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 200.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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root.offset = ViewportOffset.fixed(600.0);
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pumpFrame();
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expect(a.attached, false);
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -200.0));
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expect(c.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 200.0));
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expect(d.attached, false);
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expect(e.attached, false);
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root.offset = ViewportOffset.fixed(900.0);
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pumpFrame();
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expect(a.attached, false);
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expect(b.attached, false);
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expect(c.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -100.0));
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expect(d.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 300.0));
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expect(e.attached, false);
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// try going back up
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root.offset = ViewportOffset.fixed(200.0);
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pumpFrame();
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -200.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 200.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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});
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test('RenderSliverList basic test - up', () {
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RenderObject inner;
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RenderBox a, b, c, d, e;
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final TestRenderSliverBoxChildManager childManager = TestRenderSliverBoxChildManager(
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children: <RenderBox>[
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a = RenderSizedBox(const Size(100.0, 400.0)),
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b = RenderSizedBox(const Size(100.0, 400.0)),
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c = RenderSizedBox(const Size(100.0, 400.0)),
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d = RenderSizedBox(const Size(100.0, 400.0)),
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e = RenderSizedBox(const Size(100.0, 400.0)),
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],
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);
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final RenderViewport root = RenderViewport(
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axisDirection: AxisDirection.up,
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crossAxisDirection: AxisDirection.right,
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offset: ViewportOffset.zero(),
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children: <RenderSliver>[
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inner = childManager.createRenderObject(),
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],
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cacheExtent: 0.0,
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);
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layout(root);
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expect(root.size.width, equals(800.0));
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expect(root.size.height, equals(600.0));
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 200.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -200.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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// make sure that layout is stable by laying out again
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inner.markNeedsLayout();
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pumpFrame();
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 200.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -200.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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// now try various scroll offsets
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root.offset = ViewportOffset.fixed(200.0);
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pumpFrame();
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 400.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 0.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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root.offset = ViewportOffset.fixed(600.0);
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pumpFrame();
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expect(a.attached, false);
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 400.0));
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expect(c.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 0.0));
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expect(d.attached, false);
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expect(e.attached, false);
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root.offset = ViewportOffset.fixed(900.0);
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pumpFrame();
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expect(a.attached, false);
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expect(b.attached, false);
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expect(c.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 300.0));
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expect(d.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, -100.0));
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expect(e.attached, false);
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// try going back up
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root.offset = ViewportOffset.fixed(200.0);
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pumpFrame();
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expect(a.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 400.0));
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expect(b.localToGlobal(const Offset(0.0, 0.0)), const Offset(0.0, 0.0));
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expect(c.attached, false);
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expect(d.attached, false);
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expect(e.attached, false);
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});
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test('SliverList - no zero scroll offset correction', () {
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RenderSliverList inner;
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RenderBox a;
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final TestRenderSliverBoxChildManager childManager = TestRenderSliverBoxChildManager(
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children: <RenderBox>[
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a = RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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],
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);
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final RenderViewport root = RenderViewport(
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axisDirection: AxisDirection.down,
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crossAxisDirection: AxisDirection.right,
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offset: ViewportOffset.zero(),
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children: <RenderSliver>[
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inner = childManager.createRenderObject(),
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],
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);
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layout(root);
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final SliverMultiBoxAdaptorParentData parentData = a.parentData;
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parentData.layoutOffset = 0.001;
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root.offset = ViewportOffset.fixed(900.0);
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pumpFrame();
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root.offset = ViewportOffset.fixed(0.0);
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pumpFrame();
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expect(inner.geometry.scrollOffsetCorrection, isNull);
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});
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test('SliverList - no correction when tiny double precision error', () {
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RenderSliverList inner;
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RenderBox a;
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final TestRenderSliverBoxChildManager childManager = TestRenderSliverBoxChildManager(
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children: <RenderBox>[
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a = RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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RenderSizedBox(const Size(100.0, 400.0)),
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],
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);
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inner = childManager.createRenderObject();
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final RenderViewport root = RenderViewport(
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axisDirection: AxisDirection.down,
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crossAxisDirection: AxisDirection.right,
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offset: ViewportOffset.zero(),
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children: <RenderSliver>[
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inner,
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],
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);
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layout(root);
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final SliverMultiBoxAdaptorParentData parentData = a.parentData;
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// Simulate double precision error.
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parentData.layoutOffset = -0.0000000000001;
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root.offset = ViewportOffset.fixed(900.0);
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pumpFrame();
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final ViewportOffsetSpy spy = ViewportOffsetSpy(0.0);
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root.offset = spy;
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pumpFrame();
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expect(spy.corrected, false);
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});
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test('SliverMultiBoxAdaptorParentData.toString', () {
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final SliverMultiBoxAdaptorParentData candidate = SliverMultiBoxAdaptorParentData();
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expect(candidate.keepAlive, isFalse);
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expect(candidate.index, isNull);
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expect(candidate.toString(), 'index=null; layoutOffset=0.0');
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candidate.keepAlive = null;
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expect(candidate.toString(), 'index=null; layoutOffset=0.0');
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candidate.keepAlive = true;
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expect(candidate.toString(), 'index=null; keepAlive; layoutOffset=0.0');
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candidate.keepAlive = false;
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expect(candidate.toString(), 'index=null; layoutOffset=0.0');
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candidate.index = 0;
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expect(candidate.toString(), 'index=0; layoutOffset=0.0');
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candidate.index = 1;
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expect(candidate.toString(), 'index=1; layoutOffset=0.0');
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candidate.index = -1;
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expect(candidate.toString(), 'index=-1; layoutOffset=0.0');
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});
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}
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