calendart 1.0.2 
calendart: ^1.0.2 copied to clipboard
creomobile.comHigh customizable Flutter calendar widgets with popup view and multi-columns/rows of months, multi-scroll directions, multi-selections.
import 'dart:math' as math;
import 'dart:ui';
import 'package:calendart/calendart.dart';
import 'package:combos/combos.dart';
import 'package:demo_items/demo_items.dart';
import 'package:editors/editors.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:combos_example/main.dart' as combos;
void main() => runApp(_App());
class _App extends StatelessWidget {
@override
Widget build(BuildContext context) =>
MaterialApp(home: CalendartExamplePage());
}
class CalendartExamplePage extends StatefulWidget {
@override
_CalendartExamplePageState createState() => _CalendartExamplePageState();
}
class _CalendartExamplePageState extends State<CalendartExamplePage> {
final _calendarProperties = CalendarProperties();
final _comboProperties = CalendarComboProperties();
CalendarSelection _calendarSelection;
CalendarSelection _comboSelection;
GlobalKey<CalendarState> _calendarKey;
final _comboKey = GlobalKey<CalendarComboState>();
double _width;
double _height;
double _separatorWidth;
double _separatorHeight;
@override
Widget build(BuildContext context) {
CalendarSelectionBase getSelection(CalendarProperties properties) {
final canSelectExtra = properties.canSelectExtra.value;
final autoClosePopupAfterSelectionChanged =
properties.autoClosePopupAfterSelectionChanged.value;
switch (properties.selectionType.value) {
case SelectionType.single:
return autoClosePopupAfterSelectionChanged == null
? CalendarSelections.single(
selected: properties.selected is DateTime
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
)
: CalendarSelections.single(
selected: properties.selected is DateTime
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
autoClosePopupAfterSelectionChanged:
autoClosePopupAfterSelectionChanged,
);
case SelectionType.singleOrNone:
return autoClosePopupAfterSelectionChanged == null
? CalendarSelections.singleOrNone(
selected: properties.selected is DateTime
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
)
: CalendarSelections.singleOrNone(
selected: properties.selected is DateTime
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
autoClosePopupAfterSelectionChanged:
autoClosePopupAfterSelectionChanged,
);
case SelectionType.multi:
return autoClosePopupAfterSelectionChanged == null
? CalendarSelections.multi(
selected: properties.selected is Set<DateTime>
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
)
: CalendarSelections.multi(
selected: properties.selected is Set<DateTime>
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
autoClosePopupAfterSelectionChanged:
autoClosePopupAfterSelectionChanged,
);
case SelectionType.range:
return autoClosePopupAfterSelectionChanged == null
? CalendarSelections.range(
selected: properties.selected is DatesRange
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
)
: CalendarSelections.range(
selected: properties.selected is DatesRange
? properties.selected
: null,
canSelectExtra: canSelectExtra,
onSelectedChanged: (_) =>
setState(() => properties.selected = _),
autoClosePopupAfterSelectionChanged:
autoClosePopupAfterSelectionChanged,
);
default:
properties.selected = null;
return autoClosePopupAfterSelectionChanged == null
? CalendarSelections.none(canSelectExtra: canSelectExtra)
: CalendarSelections.none(
canSelectExtra: canSelectExtra,
autoClosePopupAfterSelectionChanged:
autoClosePopupAfterSelectionChanged);
}
}
return Scaffold(
appBar: AppBar(title: Text('Calendart sample app')),
body: ListView(
padding: EdgeInsets.all(16),
children: [
Column(
children: [
_CalendartDemoItem<CalendarProperties>(
properties: _calendarProperties,
childBuilder: (properties) {
final separatorWidth =
properties.separatorWidth.value?.toDouble() ?? 0.0;
final separatorHeight =
properties.separatorHeight.value?.toDouble() ?? 0.0;
final width = properties.columns.value *
(properties.width.value.toDouble() + separatorWidth) -
separatorWidth;
final height = properties.rows.value *
(properties.height.value.toDouble() +
separatorHeight) -
separatorHeight;
// update calendar widget if size changed
if (width != _width ||
height != _height ||
separatorWidth != _separatorWidth ||
separatorHeight != _separatorHeight) {
_width = width;
_height = height;
_separatorWidth = separatorWidth;
_separatorHeight = separatorHeight;
_calendarKey = GlobalKey<CalendarState>();
}
return Row(
children: [
ConstrainedBox(
constraints:
BoxConstraints(maxWidth: width, maxHeight: height),
child: Calendar(
key: _calendarKey,
displayDate: DateTime(
properties.year.value, properties.month.value),
columns: properties.columns.value,
rows: properties.rows.value,
selection: _calendarSelection =
getSelection(properties),
onDisplayDateChanged: (date) {
properties.year.value = date.year;
properties.month.value = date.month;
},
),
),
const SizedBox(width: 16),
IconButton(
icon: Icon(Icons.clear),
color: Colors.blueAccent,
tooltip: 'Clear Selection',
onPressed: _calendarSelection?.hasSelection == true
? () {
if (_calendarSelection is CalendarSelection) {
_calendarSelection.clear();
}
}
: null,
)
],
);
},
),
const SizedBox(height: 16),
_CalendartDemoItem<CalendarProperties>(
controllerHolder: ControllerHolder(_comboKey),
properties: _comboProperties,
childBuilder: (properties) {
final separatorWidth =
properties.separatorWidth.value?.toDouble() ?? 0.0;
final separatorHeight =
properties.separatorHeight.value?.toDouble() ?? 0.0;
final width = properties.columns.value *
(properties.width.value.toDouble() + separatorWidth) -
separatorWidth;
final height = properties.rows.value *
(properties.height.value.toDouble() +
separatorHeight) -
separatorHeight;
return Row(
children: [
ConstrainedBox(
constraints: BoxConstraints(maxWidth: 300),
child: CalendarCombo(
key: _comboKey,
displayDate: DateTime(
properties.year.value, properties.month.value),
columns: properties.columns.value,
rows: properties.rows.value,
selection: _comboSelection = getSelection(properties),
title: 'Calendar Combo',
popupSize: Size(width, height),
onDisplayDateChanged: (date) {
properties.year.value = date.year;
properties.month.value = date.month;
},
),
),
const SizedBox(width: 16),
IconButton(
icon: Icon(Icons.clear),
color: Colors.blueAccent,
tooltip: 'Clear Selection',
onPressed: _comboSelection?.hasSelection == true
? () {
if (_comboSelection is CalendarSelection) {
_comboSelection.clear();
}
}
: null,
)
],
);
},
),
],
),
],
),
);
}
}
class _CalendartDemoItem<TProperties extends CalendarProperties>
extends DemoItemBase<TProperties> {
const _CalendartDemoItem({
Key key,
this.controllerHolder,
@required TProperties properties,
@required ChildBuilder<TProperties> childBuilder,
}) : super(key: key, properties: properties, childBuilder: childBuilder);
final ControllerHolder<CalendarComboController> controllerHolder;
@override
_CalendartDemoItemState<TProperties> createState() =>
_CalendartDemoItemState<TProperties>();
}
class _CalendartDemoItemState<TProperties extends CalendarProperties>
extends DemoItemStateBase<TProperties> {
@override
_CalendartDemoItem<TProperties> get widget => super.widget;
@override
Widget buildChild() => widget.properties.apply(
child: super.buildChild(), controllerHolder: widget.controllerHolder);
@override
Widget buildProperties() {
final properties = widget.properties;
final editors = properties.editors;
return Theme(
data: ThemeData(
inputDecorationTheme:
InputDecorationTheme(border: OutlineInputBorder())),
child: ListView.separated(
padding: const EdgeInsets.all(16),
shrinkWrap: true,
physics: ClampingScrollPhysics(),
itemCount: editors.length,
itemBuilder: (context, index) => editors[index].build(),
separatorBuilder: (context, index) => const SizedBox(height: 16),
),
);
}
}
enum SelectionType { none, single, singleOrNone, multi, range }
class CalendarProperties {
final year = IntEditor(title: 'Year', value: DateTime.now().year);
final month = IntEditor(
title: 'Month', value: DateTime.now().month, minValue: 1, maxValue: 12);
dynamic selected;
final width = IntEditor(title: 'Width', value: 300);
final height = IntEditor(title: 'Height', value: 300);
final columns = IntEditor(title: 'Columns', value: 1, minValue: 1);
final rows = IntEditor(title: 'Rows', value: 1, minValue: 1);
final scrollDirection = EnumEditor<Axis>(
title: 'Scroll Direction',
getList: () => Axis.values,
value: Axis.horizontal);
final selectionType = EnumEditor<SelectionType>(
title: 'Selection Type',
getList: () => SelectionType.values,
value: SelectionType.single);
final canSelectExtra = BoolEditor(title: 'Can Select Extra', value: false);
final customSelection = BoolEditor(title: 'Custom Selection', value: false);
final customDays = BoolEditor(title: 'Custom Days', value: false);
final customDaysOfWeek =
BoolEditor(title: 'Custom Days of Week', value: false);
bool get showAutoClosePopup => false;
final autoClosePopupAfterSelectionChanged = EnumEditor<bool>(
title: 'Auto Close Popup After Selection Changed',
getList: () => [null, true, false],
value: null);
final showDaysOfWeek = BoolEditor(title: 'Show Days of Week', value: true);
final showDecorator = BoolEditor(title: 'Show Custom Decorator', value: true);
final separatorWidth = IntEditor(title: 'Separator Width', value: 32);
final separatorHeight = IntEditor(title: 'Separator Height', value: 32);
final customSeparators = BoolEditor(title: 'Custom Separators', value: true);
final firstDayOfWeekIndex = EnumEditor<int>(
title: 'First Day of Week Index',
value: 0,
getList: () => [0, 1, 2, 3, 4, 5, 6]);
List<EditorsBuilder> get editors => [
year,
month,
width,
height,
columns,
rows,
scrollDirection,
selectionType,
canSelectExtra,
customSelection,
customDays,
customDaysOfWeek,
if (showAutoClosePopup) autoClosePopupAfterSelectionChanged,
showDaysOfWeek,
showDecorator,
separatorWidth,
separatorHeight,
customSeparators,
firstDayOfWeekIndex,
];
}
class CalendarComboProperties extends CalendarProperties {
@override
bool get showAutoClosePopup => true;
final textTitlePlacement = EnumEditor<ComboTextTitlePlacement>(
title: 'Text Title Placement',
value: ComboTextTitlePlacement.label,
getList: () => ComboTextTitlePlacement.values);
final comboProperties = combos.ComboProperties(withChildDecorator: false);
@override
List<EditorsBuilder> get editors => [
...super.editors,
textTitlePlacement,
const EditorsSeparator('Combo Properties'),
...comboProperties.editors,
];
}
extension CalendarPropertiesExtension on CalendarProperties {
static final _colors = Iterable.generate(31)
.map((e) => Color((math.Random().nextDouble() * 0xFFFFFF).toInt() << 0)
.withOpacity(1.0))
.toList();
static PreferredSizeWidget _buildHorizontalSeparator(
double width, bool custom) {
final size = Size.fromWidth(width);
return PreferredSize(
preferredSize: size,
child: SizedBox.fromSize(
size: size,
child: custom
? Container(
child: Align(
alignment: Alignment.center,
child: Container(
width: 1,
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [
Colors.blueAccent.withOpacity(0),
Colors.blueAccent,
Colors.blueAccent.withOpacity(0),
]),
),
),
),
)
: null),
);
}
static PreferredSizeWidget _buildVerticalSeparator(
double height, bool custom) {
final size = Size.fromHeight(height);
return PreferredSize(
preferredSize: Size.fromHeight(height),
child: SizedBox.fromSize(
size: size,
child: custom
? Container(
child: Align(
alignment: Alignment.center,
child: Container(
alignment: Alignment.center,
height: 1,
decoration: BoxDecoration(
gradient: LinearGradient(colors: [
Colors.blueAccent.withOpacity(0),
Colors.blueAccent,
Colors.blueAccent.withOpacity(0),
]),
),
),
),
)
: null),
);
}
static Widget _buildPopupDecoration(
BuildContext context,
ComboParameters parameters,
Widget child,
ControllerHolder<CalendarComboController> controllerHolder) =>
Material(
elevation: 4,
borderRadius: BorderRadius.circular(16),
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(16),
border: Border.all(color: Colors.blueAccent),
gradient: LinearGradient(colors: [
Colors.blueAccent.withOpacity(0.1),
Colors.blueAccent.withOpacity(0.0),
Colors.blueAccent.withOpacity(0.1),
]),
),
child: Material(
color: Colors.transparent,
borderRadius: BorderRadius.circular(16),
clipBehavior: Clip.antiAlias,
child: Theme(
data: ThemeData(
highlightColor: Colors.blueAccent.withOpacity(0.1),
splashColor: Colors.blueAccent.withOpacity(0.3),
),
child: Stack(
children: [
child,
Positioned(
left: 16,
right: 16,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
IconButton(
icon: Icon(Icons.arrow_left),
color: Colors.white,
onPressed: () =>
controllerHolder.controller.dec(),
),
IconButton(
icon: Icon(Icons.arrow_right),
color: Colors.white,
onPressed: () =>
controllerHolder.controller.inc(),
),
]),
),
],
))),
),
);
Widget apply({
@required Widget child,
@required ControllerHolder<CalendarComboController> controllerHolder,
}) {
final comboProperties = this is CalendarComboProperties
? this as CalendarComboProperties
: null;
final separatorWidth = this.separatorWidth.value?.toDouble() ?? 0.0;
final separatorHeight = this.separatorHeight.value?.toDouble() ?? 0.0;
final calendarContext = CalendarContext(
parameters: CalendarParameters(
firstDayOfWeekIndex: firstDayOfWeekIndex.value,
showDaysOfWeek: showDaysOfWeek.value,
decoratorBuilder: showDecorator.value
? (context, date, calendar) => Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.center,
colors: [
Colors.blueAccent,
Colors.blueAccent.withOpacity(0),
],
stops: [0.0, 0.5],
)),
child: Column(children: [
Padding(
padding: const EdgeInsets.all(16.0),
child: Text('${date.month} ${date.year}',
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold)),
),
Expanded(child: calendar),
]),
)
: null,
horizontalSeparator: separatorWidth == 0.0
? const PreferredSize(
preferredSize: Size.fromWidth(0), child: SizedBox())
: _buildHorizontalSeparator(
separatorWidth, customSeparators.value),
verticalSeparator: separatorHeight == 0.0
? const PreferredSize(
preferredSize: Size.fromHeight(0), child: SizedBox())
: _buildVerticalSeparator(
separatorHeight, customSeparators.value),
scrollDirection: scrollDirection.value,
comboTextTitlePlacement: comboProperties?.textTitlePlacement?.value,
singleSelectionBuilder: customSelection.value
? (context, parameters, date, column, row, day, preselect,
bool Function(DateTime date) isSelected) =>
isSelected(date)
? Container(
child: DefaultTextStyle(
child: day,
style: const TextStyle(color: Colors.white)),
decoration: BoxDecoration(
gradient: RadialGradient(colors: [
Colors.blueAccent
.withOpacity(preselect ? 0.5 : 1.0),
Colors.blueAccent.withOpacity(0.0)
])),
)
: day
: null,
multiSelectionBuilder: customSelection.value
? (context, parameters, date, column, row, day, preselect,
bool Function(DateTime date) isSelected) =>
isSelected(date)
? Container(
child: DefaultTextStyle(
child: day,
style: const TextStyle(color: Colors.white)),
decoration: BoxDecoration(
gradient: RadialGradient(colors: [
Colors.blueAccent
.withOpacity(preselect ? 0.5 : 1.0),
Colors.blueAccent.withOpacity(0.0)
])),
)
: day
: null,
dayOfWeekBuilder: customDaysOfWeek.value
? (context, index) => Center(
child: Text(
DateFormat.E()
.format(DateTime(0, 1, 2).add(Duration(days: index))),
style: TextStyle(
color: Colors.blueAccent,
fontWeight: FontWeight.bold,
fontStyle: FontStyle.italic),
))
: null,
dayBuilder: customDays.value
? (context, parameters, date, type, column, row) => Center(
child: Text(date.day.toString(),
style: TextStyle(
color: _colors[date.day - 1],
fontWeight: FontWeight.bold,
decoration: type == DayType.today
? TextDecoration.underline
: null,
)),
)
: null),
child: child);
return comboProperties == null
? calendarContext
: comboProperties.comboProperties.apply(
child: calendarContext,
popupDecoratorBuilder: (context, parameters, child) =>
_buildPopupDecoration(
context, parameters, child, controllerHolder));
}
}Metadata
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Metadata
High customizable Flutter calendar widgets with popup view and multi-columns/rows of months, multi-scroll directions, multi-selections.
Repository (GitHub)
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License
unknown (LICENSE)
