115 lines
3.7 KiB
Dart
115 lines
3.7 KiB
Dart
import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:komet/frontend/widgets/attachment/editor_common.dart';
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import 'package:komet/l10n/app_localizations.dart';
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Future<ui.Image> _solidImage(int width, int height) {
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final recorder = ui.PictureRecorder();
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Canvas(recorder).drawRect(
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Rect.fromLTWH(0, 0, width.toDouble(), height.toDouble()),
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Paint()..color = const Color(0xFF3366AA),
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);
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return recorder.endRecording().toImage(width, height);
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}
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void main() {
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group('CropView', () {
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const vp = Size(400, 800);
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test('рамка во весь вьюпорт даёт единичный масштаб', () {
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final crop = Rect.fromCenter(
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center: const Offset(200, 400),
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width: 360,
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height: 720,
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);
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final view = CropView.fit(crop, vp);
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expect(view.scale, closeTo(1, 0.001));
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expect(view.focus, crop.center);
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});
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test('маленькая рамка приближает и центрирует', () {
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final crop = Rect.fromLTWH(40, 80, 90, 180);
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final view = CropView.fit(crop, vp);
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expect(view.scale, closeTo(4, 0.001));
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final display = view.rect(crop, vp);
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expect(display.center.dx, closeTo(200, 0.001));
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expect(display.center.dy, closeTo(400, 0.001));
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expect(display.width, closeTo(360, 0.001));
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});
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test('перевод координат обратим', () {
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final view = CropView.fit(Rect.fromLTWH(40, 80, 90, 180), vp);
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const point = Offset(123, 456);
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final round = view.toLogical(view.toDisplay(point, vp), vp);
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expect(round.dx, closeTo(point.dx, 0.001));
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expect(round.dy, closeTo(point.dy, 0.001));
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});
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});
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testWidgets('после зума жест по рамке двигает её в масштабе', (tester) async {
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final image = await _solidImage(400, 400);
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addTearDown(image.dispose);
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CropState? applied;
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Size? viewport;
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await tester.pumpWidget(
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MaterialApp(
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locale: const Locale('ru'),
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localizationsDelegates: AppLocalizations.localizationsDelegates,
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supportedLocales: AppLocalizations.supportedLocales,
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home: CropWorkspace(
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imageSize: const Size(400, 400),
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imageBuilder: (context, matrix) =>
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CustomPaint(painter: MatrixImagePainter(image, matrix)),
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onApply: (state, vp, changed, identity) async {
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applied = state;
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viewport = vp;
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return 'ok';
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},
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),
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),
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);
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await tester.pumpAndSettle();
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final area = tester.getRect(find.byType(LayoutBuilder).first);
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final geometry = const CropGeometry(source: Size(400, 400));
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final fitted = geometry.fittedRect(area.size);
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final corner = area.topLeft + fitted.topLeft;
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Future<void> dragCorner(Offset from, Offset delta) async {
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final gesture = await tester.startGesture(from);
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await tester.pump();
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await gesture.moveBy(delta);
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await tester.pump();
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await gesture.up();
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await tester.pumpAndSettle();
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}
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await dragCorner(corner, const Offset(40, 40));
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final zoomed = Rect.fromLTRB(
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fitted.left + 40,
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fitted.top + 40,
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fitted.right,
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fitted.bottom,
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);
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final view = CropView.fit(zoomed, area.size);
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expect(view.scale, greaterThan(1));
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await dragCorner(
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area.topLeft + view.rect(zoomed, area.size).topLeft,
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const Offset(40, 40),
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);
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await tester.tap(find.text('ГОТОВО'));
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await tester.pumpAndSettle();
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expect(applied, isNotNull);
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final left = applied!.cropNorm.left * viewport!.width;
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expect(left, closeTo(fitted.left + 40 + 40 / view.scale, 1.5));
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expect(left, lessThan(fitted.left + 80));
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});
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}
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