blob: ff39275a166ce2f1aba65dda5e7fbb7b217b62f3 [file] [log] [blame]
// 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:ui';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
import 'package:flutter/src/physics/utils.dart' show nearEqual;
import 'package:flutter_test/flutter_test.dart';
import '../rendering/mock_canvas.dart';
import '../widgets/semantics_tester.dart';
// A thumb shape that also logs its repaint center.
class LoggingThumbShape extends SliderComponentShape {
LoggingThumbShape(this.log);
final List<Offset> log;
@override
Size getPreferredSize(bool isEnabled, bool isDiscrete) {
return const Size(10.0, 10.0);
}
@override
void paint(
PaintingContext context,
Offset thumbCenter, {
required Animation<double> activationAnimation,
required Animation<double> enableAnimation,
required bool isDiscrete,
required TextPainter labelPainter,
required RenderBox parentBox,
required SliderThemeData sliderTheme,
required TextDirection textDirection,
required double value,
required double textScaleFactor,
required Size sizeWithOverflow,
}) {
log.add(thumbCenter);
final Paint thumbPaint = Paint()..color = Colors.red;
context.canvas.drawCircle(thumbCenter, 5.0, thumbPaint);
}
}
class TallSliderTickMarkShape extends SliderTickMarkShape {
@override
Size getPreferredSize({required SliderThemeData sliderTheme, required bool isEnabled}) {
return const Size(10.0, 200.0);
}
@override
void paint(
PaintingContext context,
Offset offset, {
required Offset thumbCenter,
required RenderBox parentBox,
required SliderThemeData sliderTheme,
required Animation<double> enableAnimation,
required bool isEnabled,
required TextDirection textDirection,
}) {
final Paint paint = Paint()..color = Colors.red;
context.canvas.drawRect(Rect.fromLTWH(offset.dx, offset.dy, 10.0, 20.0), paint);
}
}
class _StateDependentMouseCursor extends MaterialStateMouseCursor {
const _StateDependentMouseCursor({
this.disabled = SystemMouseCursors.none,
this.dragged = SystemMouseCursors.none,
this.hovered = SystemMouseCursors.none,
});
final MouseCursor disabled;
final MouseCursor hovered;
final MouseCursor dragged;
@override
MouseCursor resolve(Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return disabled;
}
if (states.contains(MaterialState.dragged)) {
return dragged;
}
if (states.contains(MaterialState.hovered)) {
return hovered;
}
return SystemMouseCursors.none;
}
@override
String get debugDescription => '_StateDependentMouseCursor';
}
void main() {
testWidgets('The initial value should respect the discrete value', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.20;
final List<Offset> log = <Offset>[];
final LoggingThumbShape loggingThumb = LoggingThumbShape(log);
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
final SliderThemeData sliderTheme = SliderTheme.of(context).copyWith(thumbShape: loggingThumb);
return Material(
child: Center(
child: SliderTheme(
data: sliderTheme,
child: Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
),
);
},
),
),
),
);
expect(value, equals(0.20));
expect(log.length, 1);
expect(log[0], const Offset(212.0, 300.0));
});
testWidgets('Slider can move when tapped (LTR)', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
double? startValue;
double? endValue;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider(
key: sliderKey,
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
onChangeStart: (double value) {
startValue = value;
},
onChangeEnd: (double value) {
endValue = value;
},
),
),
);
},
),
),
),
);
expect(value, equals(0.0));
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
expect(startValue, equals(0.0));
expect(endValue, equals(0.5));
startValue = null;
endValue = null;
await tester.pump(); // No animation should start.
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
final Offset topLeft = tester.getTopLeft(find.byKey(sliderKey));
final Offset bottomRight = tester.getBottomRight(find.byKey(sliderKey));
final Offset target = topLeft + (bottomRight - topLeft) / 4.0;
await tester.tapAt(target);
expect(value, moreOrLessEquals(0.25, epsilon: 0.05));
expect(startValue, equals(0.5));
expect(endValue, moreOrLessEquals(0.25, epsilon: 0.05));
await tester.pump(); // No animation should start.
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
});
testWidgets('Slider can move when tapped (RTL)', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.rtl,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider(
key: sliderKey,
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
);
},
),
),
),
);
expect(value, equals(0.0));
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
await tester.pump(); // No animation should start.
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
final Offset topLeft = tester.getTopLeft(find.byKey(sliderKey));
final Offset bottomRight = tester.getBottomRight(find.byKey(sliderKey));
final Offset target = topLeft + (bottomRight - topLeft) / 4.0;
await tester.tapAt(target);
expect(value, moreOrLessEquals(0.75, epsilon: 0.05));
await tester.pump(); // No animation should start.
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
});
testWidgets("Slider doesn't send duplicate change events if tapped on the same value", (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
late double startValue;
late double endValue;
int updates = 0;
int startValueUpdates = 0;
int endValueUpdates = 0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider(
key: sliderKey,
value: value,
onChanged: (double newValue) {
setState(() {
updates++;
value = newValue;
});
},
onChangeStart: (double value) {
startValueUpdates++;
startValue = value;
},
onChangeEnd: (double value) {
endValueUpdates++;
endValue = value;
},
),
),
);
},
),
),
),
);
expect(value, equals(0.0));
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
expect(startValue, equals(0.0));
expect(endValue, equals(0.5));
await tester.pump();
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
await tester.pump();
expect(updates, equals(1));
expect(startValueUpdates, equals(2));
expect(endValueUpdates, equals(2));
});
testWidgets('Value indicator shows for a bit after being tapped', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
);
},
),
),
),
);
expect(value, equals(0.0));
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
await tester.pump(const Duration(milliseconds: 100));
// Starts with the position animation and value indicator
expect(SchedulerBinding.instance.transientCallbackCount, equals(2));
await tester.pump(const Duration(milliseconds: 100));
// Value indicator is longer than position.
expect(SchedulerBinding.instance.transientCallbackCount, equals(1));
await tester.pump(const Duration(milliseconds: 100));
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
await tester.pump(const Duration(milliseconds: 100));
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
await tester.pump(const Duration(milliseconds: 100));
// Shown for long enough, value indicator is animated closed.
expect(SchedulerBinding.instance.transientCallbackCount, equals(1));
await tester.pump(const Duration(milliseconds: 101));
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
});
testWidgets('Discrete Slider repaints and animates when dragged', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
final List<Offset> log = <Offset>[];
final LoggingThumbShape loggingThumb = LoggingThumbShape(log);
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
final SliderThemeData sliderTheme = SliderTheme.of(context).copyWith(thumbShape: loggingThumb);
return Material(
child: Center(
child: SliderTheme(
data: sliderTheme,
child: Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
),
);
},
),
),
),
);
final List<Offset> expectedLog = <Offset>[
const Offset(24.0, 300.0),
const Offset(24.0, 300.0),
const Offset(400.0, 300.0),
];
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byKey(sliderKey)));
await tester.pump();
await tester.pump(const Duration(milliseconds: 100));
expect(value, equals(0.5));
expect(log.length, 3);
expect(log, orderedEquals(expectedLog));
await gesture.moveBy(const Offset(-500.0, 0.0));
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
expect(value, equals(0.0));
expect(log.length, 5);
expect(log.last.dx, moreOrLessEquals(386.6, epsilon: 0.1));
// With no more gesture or value changes, the thumb position should still
// be redrawn in the animated position.
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
expect(value, equals(0.0));
expect(log.length, 7);
expect(log.last.dx, moreOrLessEquals(344.5, epsilon: 0.1));
// Final position.
await tester.pump(const Duration(milliseconds: 80));
expectedLog.add(const Offset(24.0, 300.0));
expect(value, equals(0.0));
expect(log.length, 8);
expect(log.last.dx, moreOrLessEquals(24.0, epsilon: 0.1));
await gesture.up();
});
testWidgets("Slider doesn't send duplicate change events if tapped on the same value", (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
int updates = 0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider(
key: sliderKey,
value: value,
onChanged: (double newValue) {
setState(() {
updates++;
value = newValue;
});
},
),
),
);
},
),
),
),
);
expect(value, equals(0.0));
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
await tester.pump();
await tester.tap(find.byKey(sliderKey));
expect(value, equals(0.5));
await tester.pump();
expect(updates, equals(1));
});
testWidgets('discrete Slider repaints when dragged', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
final List<Offset> log = <Offset>[];
final LoggingThumbShape loggingThumb = LoggingThumbShape(log);
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
final SliderThemeData sliderTheme = SliderTheme.of(context).copyWith(thumbShape: loggingThumb);
return Material(
child: Center(
child: SliderTheme(
data: sliderTheme,
child: Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
),
);
},
),
),
),
);
final List<Offset> expectedLog = <Offset>[
const Offset(24.0, 300.0),
const Offset(24.0, 300.0),
const Offset(400.0, 300.0),
];
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byKey(sliderKey)));
await tester.pump();
await tester.pump(const Duration(milliseconds: 100));
expect(value, equals(0.5));
expect(log.length, 3);
expect(log, orderedEquals(expectedLog));
await gesture.moveBy(const Offset(-500.0, 0.0));
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
expect(value, equals(0.0));
expect(log.length, 5);
expect(log.last.dx, moreOrLessEquals(386.6, epsilon: 0.1));
// With no more gesture or value changes, the thumb position should still
// be redrawn in the animated position.
await tester.pump();
await tester.pump(const Duration(milliseconds: 10));
expect(value, equals(0.0));
expect(log.length, 7);
expect(log.last.dx, moreOrLessEquals(344.5, epsilon: 0.1));
// Final position.
await tester.pump(const Duration(milliseconds: 80));
expectedLog.add(const Offset(24.0, 300.0));
expect(value, equals(0.0));
expect(log.length, 8);
expect(log.last.dx, moreOrLessEquals(24.0, epsilon: 0.1));
await gesture.up();
});
testWidgets('Slider take on discrete values', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: SizedBox(
width: 144.0 + 2 * 16.0, // _kPreferredTotalWidth
child: Slider(
key: sliderKey,
max: 100.0,
divisions: 10,
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
),
);
},
),
),
),
);
expect(value, equals(0.0));
await tester.tap(find.byKey(sliderKey));
expect(value, equals(50.0));
await tester.drag(find.byKey(sliderKey), const Offset(5.0, 0.0));
expect(value, equals(50.0));
await tester.drag(find.byKey(sliderKey), const Offset(40.0, 0.0));
expect(value, equals(80.0));
await tester.pump(); // Starts animation.
expect(SchedulerBinding.instance.transientCallbackCount, greaterThan(0));
await tester.pump(const Duration(milliseconds: 200));
await tester.pump(const Duration(milliseconds: 200));
await tester.pump(const Duration(milliseconds: 200));
await tester.pump(const Duration(milliseconds: 200));
// Animation complete.
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
});
testWidgets('Slider can be given zero values', (WidgetTester tester) async {
final List<double> log = <double>[];
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.0,
onChanged: (double newValue) {
log.add(newValue);
},
),
),
),
),
);
await tester.tap(find.byType(Slider));
expect(log, <double>[0.5]);
log.clear();
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.0,
max: 0.0,
onChanged: (double newValue) {
log.add(newValue);
},
),
),
),
),
);
await tester.tap(find.byType(Slider));
expect(log, <double>[]);
log.clear();
});
testWidgets('Slider uses the right theme colors for the right components', (WidgetTester tester) async {
debugDisableShadows = false;
try {
const Color customColor1 = Color(0xcafefeed);
const Color customColor2 = Color(0xdeadbeef);
final ThemeData theme = ThemeData(
platform: TargetPlatform.android,
primarySwatch: Colors.blue,
sliderTheme: const SliderThemeData(
disabledThumbColor: Color(0xff000001),
disabledActiveTickMarkColor: Color(0xff000002),
disabledActiveTrackColor: Color(0xff000003),
disabledInactiveTickMarkColor: Color(0xff000004),
disabledInactiveTrackColor: Color(0xff000005),
activeTrackColor: Color(0xff000006),
activeTickMarkColor: Color(0xff000007),
inactiveTrackColor: Color(0xff000008),
inactiveTickMarkColor: Color(0xff000009),
overlayColor: Color(0xff000010),
thumbColor: Color(0xff000011),
valueIndicatorColor: Color(0xff000012),
),
);
final SliderThemeData sliderTheme = theme.sliderTheme;
double value = 0.45;
Widget buildApp({
Color? activeColor,
Color? inactiveColor,
int? divisions,
bool enabled = true,
}) {
final ValueChanged<double>? onChanged = !enabled
? null
: (double d) {
value = d;
};
return MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: Theme(
data: theme,
child: Slider(
value: value,
label: '$value',
divisions: divisions,
activeColor: activeColor,
inactiveColor: inactiveColor,
onChanged: onChanged,
),
),
),
),
),
);
}
await tester.pumpWidget(buildApp());
final MaterialInkController material = Material.of(tester.element(find.byType(Slider)))!;
final RenderBox valueIndicatorBox = tester.renderObject(find.byType(Overlay));
// Check default theme for enabled widget.
expect(material, paints..rrect(color: sliderTheme.activeTrackColor)..rrect(color: sliderTheme.inactiveTrackColor));
expect(material, paints..shadow(color: const Color(0xff000000)));
expect(material, paints..circle(color: sliderTheme.thumbColor));
expect(material, isNot(paints..circle(color: sliderTheme.disabledThumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledActiveTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledInactiveTrackColor)));
expect(material, isNot(paints..circle(color: sliderTheme.activeTickMarkColor)));
expect(material, isNot(paints..circle(color: sliderTheme.inactiveTickMarkColor)));
// Test setting only the activeColor.
await tester.pumpWidget(buildApp(activeColor: customColor1));
expect(material, paints..rrect(color: customColor1)..rrect(color: sliderTheme.inactiveTrackColor));
expect(material, paints..shadow(color: Colors.black));
expect(material, paints..circle(color: customColor1));
expect(material, isNot(paints..circle(color: sliderTheme.thumbColor)));
expect(material, isNot(paints..circle(color: sliderTheme.disabledThumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledActiveTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledInactiveTrackColor)));
// Test setting only the inactiveColor.
await tester.pumpWidget(buildApp(inactiveColor: customColor1));
expect(material, paints..rrect(color: sliderTheme.activeTrackColor)..rrect(color: customColor1));
expect(material, paints..shadow(color: Colors.black));
expect(material, paints..circle(color: sliderTheme.thumbColor));
expect(material, isNot(paints..circle(color: sliderTheme.disabledThumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledActiveTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledInactiveTrackColor)));
// Test setting both activeColor and inactiveColor.
await tester.pumpWidget(buildApp(activeColor: customColor1, inactiveColor: customColor2));
expect(material, paints..rrect(color: customColor1)..rrect(color: customColor2));
expect(material, paints..shadow(color: Colors.black));
expect(material, paints..circle(color: customColor1));
expect(material, isNot(paints..circle(color: sliderTheme.thumbColor)));
expect(material, isNot(paints..circle(color: sliderTheme.disabledThumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledActiveTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledInactiveTrackColor)));
// Test colors for discrete slider.
await tester.pumpWidget(buildApp(divisions: 3));
expect(material, paints..rrect(color: sliderTheme.activeTrackColor)..rrect(color: sliderTheme.inactiveTrackColor));
expect(
material,
paints
..circle(color: sliderTheme.activeTickMarkColor)
..circle(color: sliderTheme.activeTickMarkColor)
..circle(color: sliderTheme.inactiveTickMarkColor)
..circle(color: sliderTheme.inactiveTickMarkColor)
..shadow(color: Colors.black)
..circle(color: sliderTheme.thumbColor),
);
expect(material, isNot(paints..circle(color: sliderTheme.disabledThumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledActiveTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledInactiveTrackColor)));
// Test colors for discrete slider with inactiveColor and activeColor set.
await tester.pumpWidget(buildApp(
activeColor: customColor1,
inactiveColor: customColor2,
divisions: 3,
));
expect(material, paints..rrect(color: customColor1)..rrect(color: customColor2));
expect(
material,
paints
..circle(color: customColor2)
..circle(color: customColor2)
..circle(color: customColor1)
..circle(color: customColor1)
..shadow(color: Colors.black)
..circle(color: customColor1),
);
expect(material, isNot(paints..circle(color: sliderTheme.thumbColor)));
expect(material, isNot(paints..circle(color: sliderTheme.disabledThumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledActiveTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.disabledInactiveTrackColor)));
expect(material, isNot(paints..circle(color: sliderTheme.activeTickMarkColor)));
expect(material, isNot(paints..circle(color: sliderTheme.inactiveTickMarkColor)));
// Test default theme for disabled widget.
await tester.pumpWidget(buildApp(enabled: false));
await tester.pumpAndSettle();
expect(
material,
paints
..rrect(color: sliderTheme.disabledActiveTrackColor)
..rrect(color: sliderTheme.disabledInactiveTrackColor),
);
expect(material, paints..shadow(color: Colors.black)..circle(color: sliderTheme.disabledThumbColor));
expect(material, isNot(paints..circle(color: sliderTheme.thumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.activeTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.inactiveTrackColor)));
// Test setting the activeColor and inactiveColor for disabled widget.
await tester.pumpWidget(buildApp(activeColor: customColor1, inactiveColor: customColor2, enabled: false));
expect(
material,
paints
..rrect(color: sliderTheme.disabledActiveTrackColor)
..rrect(color: sliderTheme.disabledInactiveTrackColor),
);
expect(material, paints..circle(color: sliderTheme.disabledThumbColor));
expect(material, isNot(paints..circle(color: sliderTheme.thumbColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.activeTrackColor)));
expect(material, isNot(paints..rrect(color: sliderTheme.inactiveTrackColor)));
// Test that the default value indicator has the right colors.
await tester.pumpWidget(buildApp(divisions: 3));
Offset center = tester.getCenter(find.byType(Slider));
TestGesture gesture = await tester.startGesture(center);
// Wait for value indicator animation to finish.
await tester.pumpAndSettle();
expect(value, equals(2.0 / 3.0));
expect(
valueIndicatorBox,
paints
..path(color: sliderTheme.valueIndicatorColor)
..paragraph(),
);
await gesture.up();
// Wait for value indicator animation to finish.
await tester.pumpAndSettle();
// Testing the custom colors are used for the indicator.
await tester.pumpWidget(buildApp(
divisions: 3,
activeColor: customColor1,
inactiveColor: customColor2,
));
center = tester.getCenter(find.byType(Slider));
gesture = await tester.startGesture(center);
// Wait for value indicator animation to finish.
await tester.pumpAndSettle();
expect(value, equals(2.0 / 3.0));
expect(
valueIndicatorBox,
paints
..rrect(color: const Color(0xfffafafa))
..rrect(color: customColor1) // active track
..rrect(color: customColor2) // inactive track
..circle(color: customColor1.withOpacity(0.12)) // overlay
..circle(color: customColor2) // 1st tick mark
..circle(color: customColor2) // 2nd tick mark
..circle(color: customColor2) // 3rd tick mark
..circle(color: customColor1) // 4th tick mark
..shadow(color: Colors.black)
..circle(color: customColor1) // thumb
..path(color: sliderTheme.valueIndicatorColor), // indicator
);
await gesture.up();
} finally {
debugDisableShadows = true;
}
});
testWidgets('Slider can tap in vertical scroller', (WidgetTester tester) async {
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: ListView(
children: <Widget>[
Slider(
value: value,
onChanged: (double newValue) {
value = newValue;
},
),
Container(
height: 2000.0,
),
],
),
),
),
),
);
await tester.tap(find.byType(Slider));
expect(value, equals(0.5));
});
testWidgets('Slider drags immediately (LTR)', (WidgetTester tester) async {
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: Slider(
value: value,
onChanged: (double newValue) {
value = newValue;
},
),
),
),
),
),
);
final Offset center = tester.getCenter(find.byType(Slider));
final TestGesture gesture = await tester.startGesture(center);
expect(value, equals(0.5));
await gesture.moveBy(const Offset(1.0, 0.0));
expect(value, greaterThan(0.5));
await gesture.up();
});
testWidgets('Slider drags immediately (RTL)', (WidgetTester tester) async {
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.rtl,
child: Material(
child: Center(
child: Slider(
value: value,
onChanged: (double newValue) {
value = newValue;
},
),
),
),
),
),
);
final Offset center = tester.getCenter(find.byType(Slider));
final TestGesture gesture = await tester.startGesture(center);
expect(value, equals(0.5));
await gesture.moveBy(const Offset(1.0, 0.0));
expect(value, lessThan(0.5));
await gesture.up();
});
testWidgets('Slider onChangeStart and onChangeEnd fire once', (WidgetTester tester) async {
// Regression test for https://github.com/flutter/flutter/issues/28115
int startFired = 0;
int endFired = 0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: GestureDetector(
onHorizontalDragUpdate: (_) { },
child: Slider(
value: 0.0,
onChanged: (double newValue) { },
onChangeStart: (double value) {
startFired += 1;
},
onChangeEnd: (double value) {
endFired += 1;
},
),
),
),
),
),
),
);
await tester.timedDrag(
find.byType(Slider),
const Offset(20.0, 0.0),
const Duration(milliseconds: 100),
);
expect(startFired, equals(1));
expect(endFired, equals(1));
});
testWidgets('Slider sizing', (WidgetTester tester) async {
await tester.pumpWidget(
const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
),
),
);
expect(tester.renderObject<RenderBox>(find.byType(Slider)).size, const Size(800.0, 600.0));
await tester.pumpWidget(
const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: IntrinsicWidth(
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
),
),
),
);
expect(tester.renderObject<RenderBox>(find.byType(Slider)).size, const Size(144.0 + 2.0 * 24.0, 600.0));
await tester.pumpWidget(
const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: OverflowBox(
maxWidth: double.infinity,
maxHeight: double.infinity,
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
),
),
),
);
expect(tester.renderObject<RenderBox>(find.byType(Slider)).size, const Size(144.0 + 2.0 * 24.0, 48.0));
});
testWidgets('Slider respects textScaleFactor', (WidgetTester tester) async {
debugDisableShadows = false;
try {
final Key sliderKey = UniqueKey();
double value = 0.0;
Widget buildSlider({
required double textScaleFactor,
bool isDiscrete = true,
ShowValueIndicator show = ShowValueIndicator.onlyForDiscrete,
}) {
return MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return MediaQuery(
data: MediaQueryData(textScaleFactor: textScaleFactor),
child: Material(
child: Theme(
data: Theme.of(context).copyWith(
sliderTheme: Theme.of(context).sliderTheme.copyWith(showValueIndicator: show),
),
child: Center(
child: OverflowBox(
maxWidth: double.infinity,
maxHeight: double.infinity,
child: Slider(
key: sliderKey,
max: 100.0,
divisions: isDiscrete ? 10 : null,
label: '${value.round()}',
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
),
),
),
);
},
),
),
);
}
await tester.pumpWidget(buildSlider(textScaleFactor: 1.0));
Offset center = tester.getCenter(find.byType(Slider));
TestGesture gesture = await tester.startGesture(center);
await tester.pumpAndSettle();
expect(
tester.renderObject(find.byType(Overlay)),
paints
..path(
includes: const <Offset>[
Offset.zero,
Offset(0.0, -8.0),
Offset(-276.0, -16.0),
Offset(-216.0, -16.0),
],
color: const Color(0xf55f5f5f),
)
..paragraph(),
);
await gesture.up();
await tester.pumpAndSettle();
await tester.pumpWidget(buildSlider(textScaleFactor: 2.0));
center = tester.getCenter(find.byType(Slider));
gesture = await tester.startGesture(center);
await tester.pumpAndSettle();
expect(
tester.renderObject(find.byType(Overlay)),
paints
..path(
includes: const <Offset>[
Offset.zero,
Offset(0.0, -8.0),
Offset(-304.0, -16.0),
Offset(-216.0, -16.0),
],
color: const Color(0xf55f5f5f),
)
..paragraph(),
);
await gesture.up();
await tester.pumpAndSettle();
// Check continuous
await tester.pumpWidget(buildSlider(
textScaleFactor: 1.0,
isDiscrete: false,
show: ShowValueIndicator.onlyForContinuous,
));
center = tester.getCenter(find.byType(Slider));
gesture = await tester.startGesture(center);
await tester.pumpAndSettle();
expect(tester.renderObject(find.byType(Overlay)),
paints
..path(
includes: const <Offset>[
Offset.zero,
Offset(0.0, -8.0),
Offset(-276.0, -16.0),
Offset(-216.0, -16.0),
],
color: const Color(0xf55f5f5f),
)
..paragraph(),
);
await gesture.up();
await tester.pumpAndSettle();
await tester.pumpWidget(buildSlider(
textScaleFactor: 2.0,
isDiscrete: false,
show: ShowValueIndicator.onlyForContinuous,
));
center = tester.getCenter(find.byType(Slider));
gesture = await tester.startGesture(center);
await tester.pumpAndSettle();
expect(
tester.renderObject(find.byType(Overlay)),
paints
..path(
includes: const <Offset>[
Offset.zero,
Offset(0.0, -8.0),
Offset(-276.0, -16.0),
Offset(-216.0, -16.0),
],
color: const Color(0xf55f5f5f),
)
..paragraph(),
);
await gesture.up();
await tester.pumpAndSettle();
} finally {
debugDisableShadows = true;
}
});
testWidgets('Tick marks are skipped when they are too dense', (WidgetTester tester) async {
Widget buildSlider({
required int divisions,
}) {
return MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: Slider(
max: 100.0,
divisions: divisions,
value: 0.25,
onChanged: (double newValue) { },
),
),
),
),
);
}
// Pump a slider with a reasonable amount of divisions to verify that the
// tick marks are drawn when the number of tick marks is not too dense.
await tester.pumpWidget(
buildSlider(
divisions: 4,
),
);
final MaterialInkController material = Material.of(tester.element(find.byType(Slider)))!;
// 5 tick marks and a thumb.
expect(material, paintsExactlyCountTimes(#drawCircle, 6));
// 200 divisions will produce a tick interval off less than 6,
// which would be too dense to draw.
await tester.pumpWidget(
buildSlider(
divisions: 200,
),
);
// No tick marks are drawn because they are too dense, but the thumb is
// still drawn.
expect(material, paintsExactlyCountTimes(#drawCircle, 1));
});
testWidgets('Slider has correct animations when reparented', (WidgetTester tester) async {
final Key sliderKey = GlobalKey(debugLabel: 'A');
double value = 0.0;
Widget buildSlider(int parents) {
Widget createParents(int parents, StateSetter setState) {
Widget slider = Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
);
for (int i = 0; i < parents; ++i) {
slider = Column(children: <Widget>[slider]);
}
return slider;
}
return MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: createParents(parents, setState),
);
},
),
),
);
}
Future<void> testReparenting(bool reparent) async {
final MaterialInkController material = Material.of(tester.element(find.byType(Slider)))!;
final Offset center = tester.getCenter(find.byType(Slider));
// Move to 0.0.
TestGesture gesture = await tester.startGesture(Offset.zero);
await tester.pump();
await gesture.up();
await tester.pumpAndSettle();
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
expect(
material,
paints
..circle(x: 26.0, y: 24.0, radius: 1.0)
..circle(x: 213.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 1.0)
..circle(x: 587.0, y: 24.0, radius: 1.0)
..circle(x: 774.0, y: 24.0, radius: 1.0)
..circle(x: 24.0, y: 24.0, radius: 10.0),
);
gesture = await tester.startGesture(center);
await tester.pump();
// Wait for animations to start.
await tester.pump(const Duration(milliseconds: 25));
expect(SchedulerBinding.instance.transientCallbackCount, equals(2));
expect(
material,
paints
..circle(x: 111.20703125, y: 24.0, radius: 5.687664985656738)
..circle(x: 26.0, y: 24.0, radius: 1.0)
..circle(x: 213.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 1.0)
..circle(x: 587.0, y: 24.0, radius: 1.0)
..circle(x: 774.0, y: 24.0, radius: 1.0)
..circle(x: 111.20703125, y: 24.0, radius: 10.0),
);
// Reparenting in the middle of an animation should do nothing.
if (reparent) {
await tester.pumpWidget(buildSlider(2));
}
// Move a little further in the animations.
await tester.pump(const Duration(milliseconds: 10));
expect(SchedulerBinding.instance.transientCallbackCount, equals(2));
expect(
material,
paints
..circle(x: 190.0135726928711, y: 24.0, radius: 12.0)
..circle(x: 26.0, y: 24.0, radius: 1.0)
..circle(x: 213.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 1.0)
..circle(x: 587.0, y: 24.0, radius: 1.0)
..circle(x: 774.0, y: 24.0, radius: 1.0)
..circle(x: 190.0135726928711, y: 24.0, radius: 10.0),
);
// Wait for animations to finish.
await tester.pumpAndSettle();
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
expect(
material,
paints
..circle(x: 400.0, y: 24.0, radius: 24.0)
..circle(x: 26.0, y: 24.0, radius: 1.0)
..circle(x: 213.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 1.0)
..circle(x: 587.0, y: 24.0, radius: 1.0)
..circle(x: 774.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 10.0),
);
await gesture.up();
await tester.pumpAndSettle();
expect(SchedulerBinding.instance.transientCallbackCount, equals(0));
expect(
material,
paints
..circle(x: 26.0, y: 24.0, radius: 1.0)
..circle(x: 213.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 1.0)
..circle(x: 587.0, y: 24.0, radius: 1.0)
..circle(x: 774.0, y: 24.0, radius: 1.0)
..circle(x: 400.0, y: 24.0, radius: 10.0),
);
}
await tester.pumpWidget(buildSlider(1));
// Do it once without reparenting in the middle of an animation
await testReparenting(false);
// Now do it again with reparenting in the middle of an animation.
await testReparenting(true);
});
testWidgets('Slider Semantics', (WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.5,
onChanged: (double v) { },
),
),
),
));
await tester.pumpAndSettle();
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
SemanticsFlag.isEnabled,
SemanticsFlag.isFocusable,
SemanticsFlag.isSlider,
],
actions: <SemanticsAction>[
SemanticsAction.increase,
SemanticsAction.decrease,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
// Disable slider
await tester.pumpWidget(const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
));
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
// isFocusable is delayed by 1 frame.
SemanticsFlag.isFocusable,
SemanticsFlag.isSlider,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
await tester.pump();
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
SemanticsFlag.isSlider,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
semantics.dispose();
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.android, TargetPlatform.fuchsia, TargetPlatform.linux }));
testWidgets('Slider Semantics', (WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(
MaterialApp(
home: Theme(
data: ThemeData.light(),
child: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 100.0,
max: 200.0,
onChanged: (double v) { },
),
),
),
),
),
);
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled, SemanticsFlag.isFocusable, SemanticsFlag.isSlider],
actions: <SemanticsAction>[SemanticsAction.increase, SemanticsAction.decrease],
value: '50%',
increasedValue: '60%',
decreasedValue: '40%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
// Disable slider
await tester.pumpWidget(const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
));
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 5,
flags: <SemanticsFlag>[SemanticsFlag.hasEnabledState, SemanticsFlag.isSlider],
value: '50%',
increasedValue: '60%',
decreasedValue: '40%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
semantics.dispose();
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
testWidgets('Slider Semantics', (WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.5,
onChanged: (double v) { },
),
),
),
));
await tester.pumpAndSettle();
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
SemanticsFlag.isEnabled,
SemanticsFlag.isFocusable,
SemanticsFlag.isSlider,
],
actions: <SemanticsAction>[
SemanticsAction.increase,
SemanticsAction.decrease,
SemanticsAction.didGainAccessibilityFocus,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
// Disable slider
await tester.pumpWidget(const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
));
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
// isFocusable is delayed by 1 frame.
SemanticsFlag.isFocusable,
SemanticsFlag.isSlider,
],
actions: <SemanticsAction>[
SemanticsAction.didGainAccessibilityFocus,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
await tester.pump();
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
SemanticsFlag.isSlider,
],
actions: <SemanticsAction>[
SemanticsAction.didGainAccessibilityFocus,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
semantics.dispose();
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.windows }));
testWidgets('Slider semantics with custom formatter', (WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 40.0,
max: 200.0,
divisions: 10,
semanticFormatterCallback: (double value) => value.round().toString(),
onChanged: (double v) { },
),
),
),
));
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled, SemanticsFlag.isFocusable, SemanticsFlag.isSlider],
actions: <SemanticsAction>[SemanticsAction.increase, SemanticsAction.decrease],
value: '40',
increasedValue: '60',
decreasedValue: '20',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
semantics.dispose();
});
// Regression test for https://github.com/flutter/flutter/issues/101868
testWidgets('Slider.label info should not write to semantic node', (WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Slider(
value: 40.0,
max: 200.0,
divisions: 10,
semanticFormatterCallback: (double value) => value.round().toString(),
onChanged: (double v) { },
label: 'Bingo',
),
),
),
));
expect(
semantics,
hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[SemanticsFlag.hasEnabledState, SemanticsFlag.isEnabled, SemanticsFlag.isFocusable, SemanticsFlag.isSlider],
actions: <SemanticsAction>[SemanticsAction.increase, SemanticsAction.decrease],
value: '40',
increasedValue: '60',
decreasedValue: '20',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
),
);
semantics.dispose();
});
testWidgets('Slider is focusable and has correct focus color', (WidgetTester tester) async {
final FocusNode focusNode = FocusNode(debugLabel: 'Slider');
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double value = 0.5;
Widget buildApp({bool enabled = true}) {
return MaterialApp(
home: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return SliderTheme(
data: SliderThemeData(
overlayColor: Colors.orange[500],
),
child: Slider(
value: value,
onChanged: enabled ? (double newValue) {
setState(() {
value = newValue;
});
} : null,
autofocus: true,
focusNode: focusNode,
),
);
}),
),
),
);
}
await tester.pumpWidget(buildApp());
// Check that the overlay shows when focused.
await tester.pumpAndSettle();
expect(focusNode.hasPrimaryFocus, isTrue);
expect(
Material.of(tester.element(find.byType(Slider))),
paints..circle(color: Colors.orange[500]),
);
// Check that the overlay does not show when focused and disabled.
await tester.pumpWidget(buildApp(enabled: false));
await tester.pumpAndSettle();
expect(focusNode.hasPrimaryFocus, isFalse);
expect(
Material.of(tester.element(find.byType(Slider))),
isNot(paints..circle(color: Colors.orange[500])),
);
});
testWidgets('Slider can be hovered and has correct hover color', (WidgetTester tester) async {
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double value = 0.5;
Widget buildApp({bool enabled = true}) {
return MaterialApp(
home: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return SliderTheme(
data: SliderThemeData(
overlayColor: Colors.orange[500],
),
child: Slider(
value: value,
onChanged: enabled ? (double newValue) {
setState(() {
value = newValue;
});
} : null,
),
);
}),
),
),
);
}
await tester.pumpWidget(buildApp());
// Slider does not have overlay when enabled and not hovered.
await tester.pumpAndSettle();
expect(
Material.of(tester.element(find.byType(Slider))),
isNot(paints..circle(color: Colors.orange[500])),
);
// Start hovering.
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
await gesture.addPointer();
await gesture.moveTo(tester.getCenter(find.byType(Slider)));
// Slider has overlay when enabled and hovering.
await tester.pumpWidget(buildApp());
await tester.pumpAndSettle();
expect(
Material.of(tester.element(find.byType(Slider))),
paints..circle(color: Colors.orange[500]),
);
// Slider does not have an overlay when disabled and hovering.
await tester.pumpWidget(buildApp(enabled: false));
await tester.pumpAndSettle();
expect(
Material.of(tester.element(find.byType(Slider))),
isNot(paints..circle(color: Colors.orange[500])),
);
});
testWidgets('Slider can be incremented and decremented by keyboard shortcuts - LTR', (WidgetTester tester) async {
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double value = 0.5;
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return Slider(
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
autofocus: true,
);
}),
),
),
),
);
await tester.pumpAndSettle();
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(value, 0.55);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(value, 0.5);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowUp);
await tester.pumpAndSettle();
expect(value, 0.55);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowDown);
await tester.pumpAndSettle();
expect(value, 0.5);
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.android, TargetPlatform.fuchsia, TargetPlatform.linux, TargetPlatform.windows }));
testWidgets('Slider can be incremented and decremented by keyboard shortcuts - LTR', (WidgetTester tester) async {
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double value = 0.5;
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return Slider(
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
autofocus: true,
);
}),
),
),
),
);
await tester.pumpAndSettle();
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(value, 0.6);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(value, 0.5);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowUp);
await tester.pumpAndSettle();
expect(value, 0.6);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowDown);
await tester.pumpAndSettle();
expect(value, 0.5);
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
testWidgets('Slider can be incremented and decremented by keyboard shortcuts - RTL', (WidgetTester tester) async {
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double value = 0.5;
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return Directionality(
textDirection: TextDirection.rtl,
child: Slider(
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
autofocus: true,
),
);
}),
),
),
),
);
await tester.pumpAndSettle();
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(value, 0.45);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(value, 0.5);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowUp);
await tester.pumpAndSettle();
expect(value, 0.55);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowDown);
await tester.pumpAndSettle();
expect(value, 0.5);
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.android, TargetPlatform.fuchsia, TargetPlatform.linux, TargetPlatform.windows }));
testWidgets('Slider can be incremented and decremented by keyboard shortcuts - RTL', (WidgetTester tester) async {
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double value = 0.5;
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return Directionality(
textDirection: TextDirection.rtl,
child: Slider(
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
autofocus: true,
),
);
}),
),
),
),
);
await tester.pumpAndSettle();
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(value, 0.4);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(value, 0.5);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowUp);
await tester.pumpAndSettle();
expect(value, 0.6);
await tester.sendKeyEvent(LogicalKeyboardKey.arrowDown);
await tester.pumpAndSettle();
expect(value, 0.5);
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
testWidgets('In directional nav, Slider can be navigated out of by using up and down arrows', (WidgetTester tester) async {
const Map<ShortcutActivator, Intent> shortcuts = <ShortcutActivator, Intent>{
SingleActivator(LogicalKeyboardKey.arrowLeft): DirectionalFocusIntent(TraversalDirection.left),
SingleActivator(LogicalKeyboardKey.arrowRight): DirectionalFocusIntent(TraversalDirection.right),
SingleActivator(LogicalKeyboardKey.arrowDown): DirectionalFocusIntent(TraversalDirection.down),
SingleActivator(LogicalKeyboardKey.arrowUp): DirectionalFocusIntent(TraversalDirection.up),
};
tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
double topSliderValue = 0.5;
double bottomSliderValue = 0.5;
await tester.pumpWidget(
MaterialApp(
home: Shortcuts(
shortcuts: shortcuts,
child: Material(
child: Center(
child: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
return MediaQuery(
data: const MediaQueryData(navigationMode: NavigationMode.directional),
child: Column(
children: <Widget>[
Slider(
value: topSliderValue,
onChanged: (double newValue) {
setState(() {
topSliderValue = newValue;
});
},
autofocus: true,
),
Slider(
value: bottomSliderValue,
onChanged: (double newValue) {
setState(() {
bottomSliderValue = newValue;
});
},
),
]
),
);
}),
),
),
),
),
);
await tester.pumpAndSettle();
// The top slider is auto-focused and can be adjusted with left and right arrow keys.
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(topSliderValue, 0.55, reason: 'focused top Slider increased after first arrowRight');
expect(bottomSliderValue, 0.5, reason: 'unfocused bottom Slider unaffected by first arrowRight');
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(topSliderValue, 0.5, reason: 'focused top Slider decreased after first arrowLeft');
expect(bottomSliderValue, 0.5, reason: 'unfocused bottom Slider unaffected by first arrowLeft');
// Pressing the down-arrow key moves focus down to the bottom slider
await tester.sendKeyEvent(LogicalKeyboardKey.arrowDown);
await tester.pumpAndSettle();
expect(topSliderValue, 0.5, reason: 'arrowDown unfocuses top Slider, does not alter its value');
expect(bottomSliderValue, 0.5, reason: 'arrowDown focuses bottom Slider, does not alter its value');
// The bottom slider is now focused and can be adjusted with left and right arrow keys.
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(topSliderValue, 0.5, reason: 'unfocused top Slider unaffected by second arrowRight');
expect(bottomSliderValue, 0.55, reason: 'focused bottom Slider increased by second arrowRight');
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(topSliderValue, 0.5, reason: 'unfocused top Slider unaffected by second arrowLeft');
expect(bottomSliderValue, 0.5, reason: 'focused bottom Slider decreased by second arrowLeft');
// Pressing the up-arrow key moves focus back up to the top slider
await tester.sendKeyEvent(LogicalKeyboardKey.arrowUp);
await tester.pumpAndSettle();
expect(topSliderValue, 0.5, reason: 'arrowUp focuses top Slider, does not alter its value');
expect(bottomSliderValue, 0.5, reason: 'arrowUp unfocuses bottom Slider, does not alter its value');
// The top slider is now focused again and can be adjusted with left and right arrow keys.
await tester.sendKeyEvent(LogicalKeyboardKey.arrowRight);
await tester.pumpAndSettle();
expect(topSliderValue, 0.55, reason: 'focused top Slider increased after third arrowRight');
expect(bottomSliderValue, 0.5, reason: 'unfocused bottom Slider unaffected by third arrowRight');
await tester.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
await tester.pumpAndSettle();
expect(topSliderValue, 0.5, reason: 'focused top Slider decreased after third arrowRight');
expect(bottomSliderValue, 0.5, reason: 'unfocused bottom Slider unaffected by third arrowRight');
});
testWidgets('Slider gains keyboard focus when it gains semantics focus on Windows', (WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
final SemanticsOwner semanticsOwner = tester.binding.pipelineOwner.semanticsOwner!;
final FocusNode focusNode = FocusNode();
await tester.pumpWidget(
MaterialApp(
home: Material(
child: Slider(
value: 0.5,
onChanged: (double _) {},
focusNode: focusNode,
),
),
),
);
expect(semantics, hasSemantics(
TestSemantics.root(
children: <TestSemantics>[
TestSemantics(
id: 1,
textDirection: TextDirection.ltr,
children: <TestSemantics>[
TestSemantics(
id: 2,
children: <TestSemantics>[
TestSemantics(
id: 3,
flags: <SemanticsFlag>[SemanticsFlag.scopesRoute],
children: <TestSemantics>[
TestSemantics(
id: 4,
flags: <SemanticsFlag>[
SemanticsFlag.hasEnabledState,
SemanticsFlag.isEnabled,
SemanticsFlag.isFocusable,
SemanticsFlag.isSlider,
],
actions: <SemanticsAction>[
SemanticsAction.increase,
SemanticsAction.decrease,
SemanticsAction.didGainAccessibilityFocus,
],
value: '50%',
increasedValue: '55%',
decreasedValue: '45%',
textDirection: TextDirection.ltr,
),
],
),
],
),
],
),
],
),
ignoreRect: true,
ignoreTransform: true,
));
expect(focusNode.hasFocus, isFalse);
semanticsOwner.performAction(4, SemanticsAction.didGainAccessibilityFocus);
await tester.pumpAndSettle();
expect(focusNode.hasFocus, isTrue);
semantics.dispose();
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.windows }));
testWidgets('Value indicator appears when it should', (WidgetTester tester) async {
final ThemeData baseTheme = ThemeData(
platform: TargetPlatform.android,
primarySwatch: Colors.blue,
);
SliderThemeData theme = baseTheme.sliderTheme;
double value = 0.45;
Widget buildApp({ required SliderThemeData sliderTheme, int? divisions, bool enabled = true }) {
final ValueChanged<double>? onChanged = enabled ? (double d) => value = d : null;
return MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: Theme(
data: baseTheme,
child: SliderTheme(
data: sliderTheme,
child: Slider(
value: value,
label: '$value',
divisions: divisions,
onChanged: onChanged,
),
),
),
),
),
),
);
}
Future<void> expectValueIndicator({
required bool isVisible,
required SliderThemeData theme,
int? divisions,
bool enabled = true,
}) async {
// Discrete enabled widget.
await tester.pumpWidget(buildApp(sliderTheme: theme, divisions: divisions, enabled: enabled));
final Offset center = tester.getCenter(find.byType(Slider));
final TestGesture gesture = await tester.startGesture(center);
// Wait for value indicator animation to finish.
await tester.pumpAndSettle();
final RenderBox valueIndicatorBox = tester.renderObject(find.byType(Overlay));
expect(
valueIndicatorBox,
isVisible
? (paints..path(color: theme.valueIndicatorColor)..paragraph())
: isNot(paints..path(color: theme.valueIndicatorColor)..paragraph()),
);
await gesture.up();
}
// Default (showValueIndicator set to onlyForDiscrete).
await expectValueIndicator(isVisible: true, theme: theme, divisions: 3);
await expectValueIndicator(isVisible: false, theme: theme, divisions: 3, enabled: false);
await expectValueIndicator(isVisible: false, theme: theme);
await expectValueIndicator(isVisible: false, theme: theme, enabled: false);
// With showValueIndicator set to onlyForContinuous.
theme = theme.copyWith(showValueIndicator: ShowValueIndicator.onlyForContinuous);
await expectValueIndicator(isVisible: false, theme: theme, divisions: 3);
await expectValueIndicator(isVisible: false, theme: theme, divisions: 3, enabled: false);
await expectValueIndicator(isVisible: true, theme: theme);
await expectValueIndicator(isVisible: false, theme: theme, enabled: false);
// discrete enabled widget with showValueIndicator set to always.
theme = theme.copyWith(showValueIndicator: ShowValueIndicator.always);
await expectValueIndicator(isVisible: true, theme: theme, divisions: 3);
await expectValueIndicator(isVisible: false, theme: theme, divisions: 3, enabled: false);
await expectValueIndicator(isVisible: true, theme: theme);
await expectValueIndicator(isVisible: false, theme: theme, enabled: false);
// discrete enabled widget with showValueIndicator set to never.
theme = theme.copyWith(showValueIndicator: ShowValueIndicator.never);
await expectValueIndicator(isVisible: false, theme: theme, divisions: 3);
await expectValueIndicator(isVisible: false, theme: theme, divisions: 3, enabled: false);
await expectValueIndicator(isVisible: false, theme: theme);
await expectValueIndicator(isVisible: false, theme: theme, enabled: false);
});
testWidgets("Slider doesn't start any animations after dispose", (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
);
},
),
),
),
);
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byKey(sliderKey)));
await tester.pumpAndSettle();
expect(value, equals(0.5));
await gesture.moveBy(const Offset(-500.0, 0.0));
await tester.pumpAndSettle();
// Change the tree to dispose the original widget.
await tester.pumpWidget(Container());
expect(await tester.pumpAndSettle(), equals(1));
await gesture.up();
});
testWidgets('Slider removes value indicator from overlay if Slider gets disposed without value indicator animation completing.', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
const Color fillColor = Color(0xf55f5f5f);
double value = 0.0;
Widget buildApp({
int? divisions,
bool enabled = true,
}) {
return MaterialApp(
home: Scaffold(
body: Builder(
// The builder is used to pass the context from the MaterialApp widget
// to the [Navigator]. This context is required in order for the
// Navigator to work.
builder: (BuildContext context) {
return Column(
children: <Widget>[
Slider(
key: sliderKey,
max: 100.0,
divisions: divisions,
label: '${value.round()}',
value: value,
onChanged: (double newValue) {
value = newValue;
},
),
ElevatedButton(
child: const Text('Next'),
onPressed: () {
Navigator.of(context).pushReplacement(
MaterialPageRoute<void>(
builder: (BuildContext context) {
return ElevatedButton(
child: const Text('Inner page'),
onPressed: () { Navigator.of(context).pop(); },
);
},
),
);
},
),
],
);
},
),
),
);
}
await tester.pumpWidget(buildApp(divisions: 3));
final RenderObject valueIndicatorBox = tester.renderObject(find.byType(Overlay));
final Offset topRight = tester.getTopRight(find.byType(Slider)).translate(-24, 0);
final TestGesture gesture = await tester.startGesture(topRight);
// Wait for value indicator animation to finish.
await tester.pumpAndSettle();
expect(find.byType(Slider), isNotNull);
expect(
valueIndicatorBox,
paints
// Represents the raised button with text, next.
..path(color: Colors.black)
..paragraph()
// Represents the Slider.
..path(color: fillColor)
..paragraph(),
);
expect(valueIndicatorBox, paintsExactlyCountTimes(#drawPath, 4));
expect(valueIndicatorBox, paintsExactlyCountTimes(#drawParagraph, 2));
await tester.tap(find.text('Next'));
await tester.pumpAndSettle();
expect(find.byType(Slider), findsNothing);
expect(
valueIndicatorBox,
isNot(
paints
..path(color: fillColor)
..paragraph(),
),
);
// Represents the ElevatedButton with inner Text, inner page.
expect(valueIndicatorBox, paintsExactlyCountTimes(#drawPath, 2));
expect(valueIndicatorBox, paintsExactlyCountTimes(#drawParagraph, 1));
// Don't stop holding the value indicator.
await gesture.up();
await tester.pumpAndSettle();
});
testWidgets('Slider.adaptive', (WidgetTester tester) async {
double value = 0.5;
Widget buildFrame(TargetPlatform platform) {
return MaterialApp(
theme: ThemeData(platform: platform),
home: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
return Material(
child: Center(
child: Slider.adaptive(
value: value,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
);
},
),
);
}
for (final TargetPlatform platform in <TargetPlatform>[TargetPlatform.iOS, TargetPlatform.macOS]) {
value = 0.5;
await tester.pumpWidget(buildFrame(platform));
expect(find.byType(Slider), findsOneWidget);
expect(find.byType(CupertinoSlider), findsOneWidget);
expect(value, 0.5, reason: 'on ${platform.name}');
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(CupertinoSlider)));
// Drag to the right end of the track.
await gesture.moveBy(const Offset(600.0, 0.0));
expect(value, 1.0, reason: 'on ${platform.name}');
await gesture.up();
}
for (final TargetPlatform platform in <TargetPlatform>[TargetPlatform.android, TargetPlatform.fuchsia, TargetPlatform.linux, TargetPlatform.windows]) {
value = 0.5;
await tester.pumpWidget(buildFrame(platform));
await tester.pumpAndSettle(); // Finish the theme change animation.
expect(find.byType(Slider), findsOneWidget);
expect(find.byType(CupertinoSlider), findsNothing);
expect(value, 0.5, reason: 'on ${platform.name}');
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(Slider)));
// Drag to the right end of the track.
await gesture.moveBy(const Offset(600.0, 0.0));
expect(value, 1.0, reason: 'on ${platform.name}');
await gesture.up();
}
});
testWidgets('Slider respects height from theme', (WidgetTester tester) async {
final Key sliderKey = UniqueKey();
double value = 0.0;
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
final SliderThemeData sliderTheme = SliderTheme.of(context).copyWith(tickMarkShape: TallSliderTickMarkShape());
return Material(
child: Center(
child: IntrinsicHeight(
child: SliderTheme(
data: sliderTheme,
child: Slider(
key: sliderKey,
value: value,
divisions: 4,
onChanged: (double newValue) {
setState(() {
value = newValue;
});
},
),
),
),
),
);
},
),
),
),
);
final RenderBox renderObject = tester.renderObject<RenderBox>(find.byType(Slider));
expect(renderObject.size.height, 200);
});
testWidgets('Slider changes mouse cursor when hovered', (WidgetTester tester) async {
// Test Slider() constructor
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: MouseRegion(
cursor: SystemMouseCursors.forbidden,
child: Slider(
mouseCursor: SystemMouseCursors.text,
value: 0.5,
onChanged: (double newValue) { },
),
),
),
),
),
),
);
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse, pointer: 1);
await gesture.addPointer(location: tester.getCenter(find.byType(Slider)));
await tester.pump();
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.text);
// Test Slider.adaptive() constructor
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: MouseRegion(
cursor: SystemMouseCursors.forbidden,
child: Slider.adaptive(
mouseCursor: SystemMouseCursors.text,
value: 0.5,
onChanged: (double newValue) { },
),
),
),
),
),
),
);
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.text);
// Test default cursor
await tester.pumpWidget(
MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: MouseRegion(
cursor: SystemMouseCursors.forbidden,
child: Slider(
value: 0.5,
onChanged: (double newValue) { },
),
),
),
),
),
),
);
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.click);
});
testWidgets('Slider MaterialStateMouseCursor resolves correctly', (WidgetTester tester) async {
const MouseCursor disabledCursor = SystemMouseCursors.basic;
const MouseCursor hoveredCursor = SystemMouseCursors.grab;
const MouseCursor draggedCursor = SystemMouseCursors.move;
Widget buildFrame({ required bool enabled }) {
return MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: MouseRegion(
cursor: SystemMouseCursors.forbidden,
child: Slider(
mouseCursor: const _StateDependentMouseCursor(
disabled: disabledCursor,
hovered: hoveredCursor,
dragged: draggedCursor,
),
value: 0.5,
onChanged: enabled ? (double newValue) { } : null,
),
),
),
),
),
);
}
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse, pointer: 1);
await gesture.addPointer(location: Offset.zero);
await tester.pumpWidget(buildFrame(enabled: false));
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), disabledCursor);
await tester.pumpWidget(buildFrame(enabled: true));
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.none);
await gesture.moveTo(tester.getCenter(find.byType(Slider))); // start hover
await tester.pumpAndSettle();
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), hoveredCursor);
await tester.timedDrag(
find.byType(Slider),
const Offset(20.0, 0.0),
const Duration(milliseconds: 100),
);
expect(RendererBinding.instance.mouseTracker.debugDeviceActiveCursor(1), SystemMouseCursors.move);
});
testWidgets('Slider implements debugFillProperties', (WidgetTester tester) async {
final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
const Slider(
activeColor: Colors.blue,
divisions: 10,
inactiveColor: Colors.grey,
label: 'Set a value',
max: 100.0,
onChanged: null,
value: 50.0,
).debugFillProperties(builder);
final List<String> description = builder.properties
.where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
.map((DiagnosticsNode node) => node.toString()).toList();
expect(description, <String>[
'value: 50.0',
'disabled',
'min: 0.0',
'max: 100.0',
'divisions: 10',
'label: "Set a value"',
'activeColor: MaterialColor(primary value: Color(0xff2196f3))',
'inactiveColor: MaterialColor(primary value: Color(0xff9e9e9e))',
]);
});
testWidgets('Slider track paints correctly when the shape is rectangular', (WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
theme: ThemeData(
sliderTheme: const SliderThemeData(
trackShape: RectangularSliderTrackShape(),
),
),
home: const Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
),
),
);
// _RenderSlider is the last render object in the tree.
final RenderObject renderObject = tester.allRenderObjects.last;
// The active track rect should start at 24.0 pixels,
// and there should not have a gap between active and inactive track.
expect(
renderObject,
paints
..rect(rect: const Rect.fromLTRB(24.0, 298.0, 400.0, 302.0)) // active track Rect.
..rect(rect: const Rect.fromLTRB(400.0, 298.0, 776.0, 302.0)), // inactive track Rect.
);
});
testWidgets('Slider can be painted in a narrower constraint', (WidgetTester tester) async {
await tester.pumpWidget(
const MaterialApp(
home: Directionality(
textDirection: TextDirection.ltr,
child: Material(
child: Center(
child: SizedBox(
height: 10.0,
width: 10.0,
child: Slider(
value: 0.5,
onChanged: null,
),
),
),
),
),
),
);
// _RenderSlider is the last render object in the tree.
final RenderObject renderObject = tester.allRenderObjects.last;
expect(
renderObject,
paints
// active track RRect
..rrect(rrect: RRect.fromLTRBAndCorners(-14.0, 2.0, 5.0, 8.0, topLeft: const Radius.circular(3.0), bottomLeft: const Radius.circular(3.0)))
// inactive track RRect
..rrect(rrect: RRect.fromLTRBAndCorners(5.0, 3.0, 24.0, 7.0, topRight: const Radius.circular(2.0), bottomRight: const Radius.circular(2.0)))
// thumb
..circle(x: 5.0, y: 5.0, radius: 10.0, ),
);
});
testWidgets('Update the divisions and value at the same time for Slider', (WidgetTester tester) async {
// Regress test for https://github.com/flutter/flutter/issues/65943
Widget buildFrame(double maxValue) {
return MaterialApp(
home: Material(
child: Center(
child: Slider.adaptive(
value: 5,
max: maxValue,
divisions: maxValue.toInt(),
onChanged: (double newValue) {},
),
),
),
);
}
await tester.pumpWidget(buildFrame(10));
// _RenderSlider is the last render object in the tree.
final RenderObject renderObject = tester.allRenderObjects.last;
// Update the divisions from 10 to 15, the thumb should be paint at the correct position.
await tester.pumpWidget(buildFrame(15));
await tester.pumpAndSettle(); // Finish the animation.
late RRect activeTrackRRect;
expect(renderObject, paints..something((Symbol method, List<dynamic> arguments) {
if (method != #drawRRect) {
return false;
}
activeTrackRRect = arguments[0] as RRect;
return true;
}));
// The thumb should at one-third(5 / 15) of the Slider.
// The right of the active track shape is the position of the thumb.
// 24.0 is the default margin, (800.0 - 24.0 - 24.0) is the slider's width.
expect(nearEqual(activeTrackRRect.right, (800.0 - 24.0 - 24.0) * (5 / 15) + 24.0, 0.01), true);
});
testWidgets('Slider paints thumbColor', (WidgetTester tester) async {
const Color color = Color(0xffffc107);
final Widget sliderAdaptive = MaterialApp(
theme: ThemeData(platform: TargetPlatform.iOS),
home: Material(
child: Slider(
value: 0,
onChanged: (double newValue) {},
thumbColor: color,
),
),
);
await tester.pumpWidget(sliderAdaptive);
await tester.pumpAndSettle();
final MaterialInkController material =
Material.of