// Copyright 2014 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. import 'dart:math' as math show pi; import 'package:flutter/material.dart'; import 'package:flutter_test/flutter_test.dart'; import '../widgets/semantics_tester.dart'; class MockCanvas extends Fake implements Canvas { late Path capturedPath; late Paint capturedPaint; @override void drawPath(Path path, Paint paint) { capturedPath = path; capturedPaint = paint; } late double capturedSx; late double capturedSy; @override void scale(double sx, [double? sy]) { capturedSx = sx; capturedSy = sy!; } final List<RecordedCanvasCall> invocations = <RecordedCanvasCall>[]; @override void rotate(double radians) { invocations.add(RecordedRotate(radians)); } @override void translate(double dx, double dy) { invocations.add(RecordedTranslate(dx, dy)); } } @immutable abstract class RecordedCanvasCall { const RecordedCanvasCall(); } class RecordedRotate extends RecordedCanvasCall { const RecordedRotate(this.radians); final double radians; @override bool operator ==(Object other) { return other is RecordedRotate && other.radians == radians; } @override int get hashCode => radians.hashCode; } class RecordedTranslate extends RecordedCanvasCall { const RecordedTranslate(this.dx, this.dy); final double dx; final double dy; @override bool operator ==(Object other) { return other is RecordedTranslate && other.dx == dx && other.dy == dy; } @override int get hashCode => hashValues(dx, dy); } void main() { testWidgets('IconTheme color', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(48.0, 48.0)); expect(canvas.capturedPaint, hasColor(0xFF666666)); }); testWidgets('IconTheme opacity', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), opacity: 0.5, ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(48.0, 48.0)); expect(canvas.capturedPaint, hasColor(0x80666666)); }); testWidgets('color overrides IconTheme color', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, color: Color(0xFF0000FF), ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(48.0, 48.0)); expect(canvas.capturedPaint, hasColor(0xFF0000FF)); }); testWidgets('IconTheme size', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), size: 12.0, ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(12.0, 12.0)); // arrow_menu default size is 48x48 so we expect it to be scaled by 0.25. expect(canvas.capturedSx, 0.25); expect(canvas.capturedSy, 0.25); }); testWidgets('size overridesIconTheme size', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), size: 12.0, ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, size: 96.0, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(12.0, 12.0)); // arrow_menu default size is 48x48 so we expect it to be scaled by 2. expect(canvas.capturedSx, 2); expect(canvas.capturedSy, 2); }); testWidgets('Semantic label', (WidgetTester tester) async { final SemanticsTester semantics = SemanticsTester(tester); await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, size: 96.0, semanticLabel: 'a label', ), ), ); expect(semantics, includesNodeWith(label: 'a label')); semantics.dispose(); }); testWidgets('Inherited text direction rtl', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.rtl, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(48.0, 48.0)); expect(canvas.invocations, const <RecordedCanvasCall>[ RecordedRotate(math.pi), RecordedTranslate(-48, -48), ]); }); testWidgets('Inherited text direction ltr', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(48.0, 48.0)); expect(canvas.invocations, isEmpty); }); testWidgets('Inherited text direction overridden', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: IconTheme( data: IconThemeData( color: Color(0xFF666666), ), child: AnimatedIcon( progress: AlwaysStoppedAnimation<double>(0.0), icon: AnimatedIcons.arrow_menu, textDirection: TextDirection.rtl, ), ), ), ); final CustomPaint customPaint = tester.widget(find.byType(CustomPaint)); final MockCanvas canvas = MockCanvas(); customPaint.painter!.paint(canvas, const Size(48.0, 48.0)); expect(canvas.invocations, const <RecordedCanvasCall>[ RecordedRotate(math.pi), RecordedTranslate(-48, -48), ]); }); } PaintColorMatcher hasColor(int color) { return PaintColorMatcher(color); } class PaintColorMatcher extends Matcher { const PaintColorMatcher(this.expectedColor); final int expectedColor; @override Description describe(Description description) => description.add('color was not $expectedColor'); @override bool matches(dynamic item, Map<dynamic, dynamic> matchState) { final Paint actualPaint = item as Paint; return actualPaint.color == Color(expectedColor); } }