Horizontal Time Picker In Flutter :
Screenshot :
Widget Package :
– horizontal_time_picker.dart
– time_picker_util.dart
– time_widget.dart
horizontal_time_picker.dart
library horizontal_time_picker;
import 'package:flutter/material.dart';
import 'time_picker_util.dart';
import 'time_widget.dart';
typedef DateSelectionCallBack = void Function(DateTime dateTime);
class HorizontalTimePicker extends StatefulWidget {
final int startTimeInHour;
final int endTimeInHour;
final DateTime dateForTime;
final int timeIntervalInMinutes;
final double height;
final TextStyle timeTextStyle;
final TextStyle selectedTimeTextStyle;
final DateSelectionCallBack onTimeSelected;
final DateSelectionCallBack onTimeUnSelected;
final Decoration defaultDecoration;
final Decoration selectedDecoration;
final Decoration disabledDecoration;
final List<DateTime> initialSelectedDates;
final ScrollController scrollController;
final double spacingBetweenDates;
final EdgeInsetsGeometry padding;
final int maxSelectedDateCount;
final bool showDisabled;
HorizontalTimePicker({
Key key,
this.height = 100,
this.timeIntervalInMinutes = 15,
@required this.startTimeInHour,
@required this.endTimeInHour,
@required this.dateForTime,
this.scrollController,
this.onTimeSelected,
this.onTimeUnSelected,
this.maxSelectedDateCount = 1,
this.timeTextStyle,
this.selectedTimeTextStyle,
this.defaultDecoration,
this.selectedDecoration,
this.disabledDecoration,
this.initialSelectedDates,
this.spacingBetweenDates = 8.0,
this.showDisabled = true,
this.padding = const EdgeInsets.all(12.0),
}) : assert(startTimeInHour != null),
assert(dateForTime != null),
assert(endTimeInHour != null),
assert(
endTimeInHour == startTimeInHour || startTimeInHour < endTimeInHour,
),
super(key: key);
@override
_HorizontalTimePickerState createState() => _HorizontalTimePickerState();
}
class TimeUnit {
int _hour;
int _minute;
String _time;
TimeUnit(this._hour, this._minute);
int get hour => _hour;
set hour(int value) {
_hour = value;
}
String get time =>
(_hour < 10 ? '0' : '') +
_hour.toString() +
':' +
(_minute < 10 ? '0' : '') +
_minute.toString();
int get minute => _minute;
set minute(int value) {
_minute = value;
}
}
class _HorizontalTimePickerState extends State<HorizontalTimePicker> {
final List<TimeUnit> allDateTimeSlots = [];
List<TimeUnit> selectedDateTimeSlots = [];
@override
void initState() {
super.initState();
allDateTimeSlots.addAll(getDateTimeSlotList(
widget.startTimeInHour,
widget.endTimeInHour,
widget.timeIntervalInMinutes,
widget.dateForTime));
}
@override
Widget build(BuildContext context) {
return Container(
height: widget.height,
child: Center(
child: ListView.builder(
controller: widget.scrollController ?? ScrollController(),
scrollDirection: Axis.horizontal,
itemCount: allDateTimeSlots.length,
itemBuilder: (context, index) {
final timeSlotIterated = allDateTimeSlots[index];
if (!widget.showDisabled &&
isTimeSlotDisabled(widget.dateForTime, timeSlotIterated)) {
return Container();
}
return Row(
children: <Widget>[
TimeWidget(
key: Key(timeSlotIterated._time),
padding: widget.padding,
isSelected: isTimeSlotSelected(
selectedDateTimeSlots, timeSlotIterated),
isDisabled:
isTimeSlotDisabled(widget.dateForTime, timeSlotIterated),
date: widget.dateForTime,
timeUnit: timeSlotIterated,
timeTextStyle: widget.timeTextStyle,
selectedTimeTextStyle: widget.selectedTimeTextStyle,
defaultDecoration: widget.defaultDecoration,
selectedDecoration: widget.selectedDecoration,
disabledDecoration: widget.disabledDecoration,
onTap: () {
if (!selectedDateTimeSlots.contains(timeSlotIterated)) {
if (widget.maxSelectedDateCount == 1 &&
selectedDateTimeSlots.length == 1) {
selectedDateTimeSlots.clear();
}
selectedDateTimeSlots.add(timeSlotIterated);
if (widget.onTimeSelected != null) {
widget.onTimeSelected(DateTime(
widget.dateForTime.year,
widget.dateForTime.month,
widget.dateForTime.day,
timeSlotIterated.hour,
timeSlotIterated.minute,
0,
0,
0));
}
} else {
final isRemoved =
selectedDateTimeSlots.remove(timeSlotIterated);
if (isRemoved && widget.onTimeUnSelected != null) {
widget.onTimeUnSelected(DateTime(
widget.dateForTime.year,
widget.dateForTime.month,
widget.dateForTime.day,
timeSlotIterated.hour,
timeSlotIterated.minute,
0,
0,
0));
}
}
setState(() {
selectedDateTimeSlots = selectedDateTimeSlots;
});
},
),
SizedBox(width: widget.spacingBetweenDates),
],
);
},
),
),
);
}
}
time_picker_util.dart
import 'horizontal_time_picker.dart';
List<TimeUnit> getDateTimeSlotList(int startTimeInHour, int endTimeInHour,
int timeIntervalInMinutes, DateTime dateForTime) {
List<TimeUnit> timeSlots = [];
for (int i = startTimeInHour; i < endTimeInHour; i++) {
int intervalDerived = 0;
while (intervalDerived < 60) {
timeSlots.add(TimeUnit(i, intervalDerived));
intervalDerived = intervalDerived + timeIntervalInMinutes;
}
}
return timeSlots;
}
isTimeSlotDisabled(DateTime dateForTime, TimeUnit timeSlot) {
DateTime selectedDateTime = DateTime(dateForTime.year, dateForTime.month,
dateForTime.day, timeSlot.hour, timeSlot.minute, 0, 0, 0);
if (selectedDateTime.isBefore(DateTime.now())) {
return true;
}
return false;
}
isTimeSlotSelected(
List<TimeUnit> selectedDateTimeSlots, TimeUnit timeSlotIterated) {
if (selectedDateTimeSlots.isEmpty) return false;
bool found = false;
selectedDateTimeSlots.forEach((timeSlot) {
if (timeSlot.hour == timeSlotIterated.hour &&
timeSlot.minute == timeSlotIterated.minute) {
found = true;
}
});
return found;
}
time_widget.dart
import 'package:flutter/material.dart';
import 'horizontal_time_picker.dart';
class AppColors {
static const Color primaryElement = Color.fromARGB(255, 255, 255, 255);
}
class Borders {
static const BorderSide primaryBorder = BorderSide(
color: Color.fromARGB(255, 229, 229, 229),
width: 1,
style: BorderStyle.solid,
);
}
class Radii {
static const BorderRadiusGeometry k3pxRadius =
BorderRadius.all(Radius.circular(5));
}
class TimeWidget extends StatelessWidget {
final DateTime date;
final TimeUnit timeUnit;
final TextStyle timeTextStyle;
final TextStyle selectedTimeTextStyle;
final VoidCallback onTap;
final VoidCallback onLongTap;
final Decoration defaultDecoration;
final Decoration selectedDecoration;
final Decoration disabledDecoration;
final bool isSelected;
final bool isDisabled;
final EdgeInsetsGeometry padding;
TimeWidget({
Key key,
@required this.date,
@required this.timeUnit,
this.onTap,
this.onLongTap,
this.isSelected = false,
this.isDisabled = false,
this.timeTextStyle,
this.selectedTimeTextStyle,
this.defaultDecoration = const BoxDecoration(
color: AppColors.primaryElement,
border: Border.fromBorderSide(Borders.primaryBorder),
borderRadius: Radii.k3pxRadius,
),
this.selectedDecoration = const BoxDecoration(
color: Colors.black87,
border: Border.fromBorderSide(Borders.primaryBorder),
borderRadius: Radii.k3pxRadius,
),
this.disabledDecoration = const BoxDecoration(
color: Colors.black26,
border: Border.fromBorderSide(Borders.primaryBorder),
borderRadius: Radii.k3pxRadius,
),
this.padding,
}) : super(key: key);
@override
Widget build(BuildContext context) {
Decoration decoration = defaultDecoration;
TextStyle timeStyle = timeTextStyle;
if (isSelected) {
timeStyle = selectedTimeTextStyle;
decoration = selectedDecoration;
} else if (isDisabled) {
decoration = disabledDecoration;
}
return GestureDetector(
onTap: isDisabled ? null : onTap,
onLongPress: isDisabled ? null : onLongTap,
child: Container(
decoration: decoration,
child: Padding(
padding: padding,
child: Text(
timeUnit.time,
textAlign: TextAlign.left,
style: timeStyle,
),
),
),
);
}
}
main.dart
import 'package:flutter/material.dart';
import 'widget/horizontal_time_picker.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Horizontal Time Picker Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Horizontal Time Picker Demo'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: HorizontalTimePicker(
key: UniqueKey(),
startTimeInHour: 9,
endTimeInHour: 24,
dateForTime: DateTime.now(),
selectedTimeTextStyle: TextStyle(
color: Colors.white,
fontFamily: "Helvetica Neue",
fontWeight: FontWeight.w300,
fontSize: 16,
height: 1.0,
),
timeTextStyle: TextStyle(
color: Colors.black,
fontFamily: "Helvetica Neue",
fontWeight: FontWeight.w300,
fontSize: 16,
height: 1.0,
),
defaultDecoration: const BoxDecoration(
color: Colors.white,
border: Border.fromBorderSide(BorderSide(
color: Color.fromARGB(255, 151, 151, 151),
width: 1,
style: BorderStyle.solid,
)),
borderRadius: BorderRadius.all(Radius.circular(5)),
),
selectedDecoration: const BoxDecoration(
color: Colors.black,
border: Border.fromBorderSide(BorderSide(
color: Color.fromARGB(255, 151, 151, 151),
width: 1,
style: BorderStyle.solid,
)),
borderRadius: BorderRadius.all(Radius.circular(5)),
),
disabledDecoration: const BoxDecoration(
color: Colors.black26,
border: Border.fromBorderSide(BorderSide(
color: Color.fromARGB(255, 151, 151, 151),
width: 1,
style: BorderStyle.solid,
)),
borderRadius: BorderRadius.all(Radius.circular(5)),
),
showDisabled: true,
));
}
}
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