| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // @dart = 2.6 |
| import 'dart:typed_data'; |
| |
| import 'package:ui/ui.dart'; |
| import 'package:ui/src/engine.dart'; |
| |
| import 'package:test/bootstrap/browser.dart'; |
| import 'package:test/test.dart'; |
| |
| void main() { |
| internalBootstrapBrowserTest(() => testMain); |
| } |
| |
| void testMain() async { |
| setUp(() async { |
| await webOnlyInitializePlatform(); |
| webOnlyFontCollection.debugRegisterTestFonts(); |
| await webOnlyFontCollection.ensureFontsLoaded(); |
| }); |
| |
| test('Picture.toImage().toByteData()', () async { |
| final EnginePictureRecorder recorder = PictureRecorder(); |
| final RecordingCanvas canvas = |
| recorder.beginRecording(Rect.fromLTRB(0, 0, 2, 2)); |
| canvas.drawColor(Color(0xFFCCDD00), BlendMode.srcOver); |
| final Picture testPicture = recorder.endRecording(); |
| final Image testImage = await testPicture.toImage(2, 2); |
| final ByteData bytes = |
| await testImage.toByteData(format: ImageByteFormat.rawRgba); |
| expect( |
| bytes.buffer.asUint32List(), |
| <int>[0xFF00DDCC, 0xFF00DDCC, 0xFF00DDCC, 0xFF00DDCC], |
| ); |
| |
| final ByteData pngBytes = |
| await testImage.toByteData(format: ImageByteFormat.png); |
| |
| // PNG-encoding is browser-specific, but the header is standard. We only |
| // test the header. |
| final List<int> pngHeader = <int>[137, 80, 78, 71, 13, 10, 26, 10]; |
| expect( |
| pngBytes.buffer.asUint8List().sublist(0, pngHeader.length), |
| pngHeader, |
| ); |
| }); |
| } |