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82 lines
3.3 KiB
Dart
82 lines
3.3 KiB
Dart
// Copyright 2015 The Chromium 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:test/test.dart';
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import 'package:flutter_web/material.dart';
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import 'package:flutter_web/rendering.dart';
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import 'package:flutter_web_ui/ui.dart';
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class RenderDecoratedBox extends RenderProxyBox {
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final BoxDecoration decoration;
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RenderDecoratedBox({this.decoration});
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}
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void main() {
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test('RenderPositionedBox expands', () {
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final RenderConstrainedBox sizer = new RenderConstrainedBox(
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additionalConstraints:
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new BoxConstraints.tight(const Size(100.0, 100.0)),
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child: new RenderDecoratedBox(decoration: const BoxDecoration()));
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final RenderPositionedBox positioner =
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new RenderPositionedBox(child: sizer);
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(200.0), reason: 'positioner width');
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expect(positioner.size.height, equals(200.0), reason: 'positioner height');
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});
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test('RenderPositionedBox shrink wraps', () {
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final RenderConstrainedBox sizer = new RenderConstrainedBox(
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additionalConstraints:
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new BoxConstraints.tight(const Size(100.0, 100.0)),
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child: new RenderDecoratedBox(decoration: const BoxDecoration()));
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final RenderPositionedBox positioner =
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new RenderPositionedBox(child: sizer, widthFactor: 1.0);
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(100.0), reason: 'positioner width');
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expect(positioner.size.height, equals(200.0), reason: 'positioner height');
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positioner.widthFactor = null;
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positioner.heightFactor = 1.0;
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(200.0), reason: 'positioner width');
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expect(positioner.size.height, equals(100.0), reason: 'positioner height');
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positioner.widthFactor = 1.0;
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(100.0), reason: 'positioner width');
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expect(positioner.size.height, equals(100.0), reason: 'positioner height');
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});
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test('RenderPositionedBox width and height factors', () {
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final RenderConstrainedBox sizer = new RenderConstrainedBox(
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additionalConstraints:
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new BoxConstraints.tight(const Size(100.0, 100.0)),
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child: new RenderDecoratedBox(decoration: const BoxDecoration()));
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final RenderPositionedBox positioner = new RenderPositionedBox(
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child: sizer, widthFactor: 1.0, heightFactor: 0.0);
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(100.0));
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expect(positioner.size.height, equals(0.0));
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positioner.widthFactor = 0.5;
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positioner.heightFactor = 0.5;
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(50.0));
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expect(positioner.size.height, equals(50.0));
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positioner.widthFactor = null;
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positioner.heightFactor = null;
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positioner.layout(new BoxConstraints.loose(const Size(200.0, 200.0)));
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expect(positioner.size.width, equals(200.0));
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expect(positioner.size.height, equals(200.0));
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});
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}
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