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75 lines
2.5 KiB
Dart
75 lines
2.5 KiB
Dart
@TestOn('browser')
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library;
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import 'dart:convert';
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import 'dart:js' as js;
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import 'dart:typed_data';
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import 'dart:ui' as ui;
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import 'package:flutter_hbb/models/model.dart' as model;
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import 'package:flutter_hbb/web/custom_cursor.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:image/image.dart' as img;
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class _CursorModel extends Fake implements model.CursorModel {
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@override
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final Set<String> cachedKeys = {};
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@override
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void addKey(String key) => cachedKeys.add(key);
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}
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void main() {
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TestWidgetsFlutterBinding.ensureInitialized();
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test('Web cursor aligns CSS hotspots with rounded PNG dimensions', () async {
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Map<String, dynamic>? registered;
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final original = js.context['setByName'];
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js.context['setByName'] = js.allowInterop((String name, String value) {
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expect(name, 'cursor');
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registered = jsonDecode(value) as Map<String, dynamic>;
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});
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addTearDown(() => js.context['setByName'] = original);
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final recorder = ui.PictureRecorder();
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ui.Canvas(recorder).drawColor(const ui.Color(0xffffffff), ui.BlendMode.src);
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final picture = recorder.endRecording();
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final nativeImage = await picture.toImage(48, 48);
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picture.dispose();
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addTearDown(nativeImage.dispose);
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for (final (hotspot, scale, side, expected) in [
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((7.0, 7.0), 633 / 1600, 19, (3, 3)),
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((21.0, 23.0), 633 / 1600, 19, (8, 9)),
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((22.0, 22.0), 633 / 1600, 19, (9, 9)),
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((21.0, 23.0), 0.05, 12, (5, 6)),
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((21.0, 23.0), 0.5, 24, (11, 12)),
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((7.0, 7.0), 1.0, 48, (7, 7)),
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]) {
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final cache = _data(nativeImage, hotspot);
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final session =
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buildCursorOfCache(_CursorModel(), scale, cache).createSession(1);
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await session.activate();
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final uri = Uri.parse(registered!['url'] as String);
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final bitmap = img.decodePng(uri.data!.contentAsBytes())!;
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expect((bitmap.width, bitmap.height), (side, side));
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expect((registered!['hotx'], registered!['hoty']), expected);
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session.dispose();
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await deleteCustomCursor(cache.updateGetKey(scale));
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}
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});
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}
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model.CursorData _data(ui.Image nativeImage, (double, double) hotspot) {
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final image = img.Image(width: 48, height: 48, numChannels: 4);
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img.fill(image, color: img.ColorRgba8(255, 255, 255, 255));
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return model.CursorData(
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peerId: 'web-cursor-test',
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id: '$hotspot',
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image: image,
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nativeImage: nativeImage,
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scale: 1,
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data: Uint8List.fromList(img.encodePng(image)),
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hotxOrigin: hotspot.$1,
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hotyOrigin: hotspot.$2,
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width: 48,
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height: 48,
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);
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}
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