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* create component Zeta Radio Button * remove hover color * fix label line height
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:zeta_example/widgets.dart'; | ||
| import 'package:zeta_flutter/zeta_flutter.dart'; | ||
|
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| class RadioButtonExample extends StatefulWidget { | ||
| static const String name = 'RadioButton'; | ||
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| const RadioButtonExample({Key? key}) : super(key: key); | ||
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| @override | ||
| State<RadioButtonExample> createState() => _RadioButtonExampleState(); | ||
| } | ||
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| class _RadioButtonExampleState extends State<RadioButtonExample> { | ||
| String option1 = 'Label 1'; | ||
| String option2 = 'Label 2'; | ||
| String? groupValue; | ||
| bool isEnabled = true; | ||
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| @override | ||
| Widget build(BuildContext context) { | ||
| return ExampleScaffold( | ||
| name: 'Radio Button', | ||
| child: Center( | ||
| child: Column( | ||
| children: [ | ||
| ZetaRadio<String>( | ||
| value: option1, | ||
| groupValue: groupValue, | ||
| onChanged: isEnabled ? (value) => setState(() => groupValue = value) : null, | ||
| label: Text(option1), | ||
| ), | ||
| ZetaRadio<String>( | ||
| value: option2, | ||
| groupValue: groupValue, | ||
| onChanged: isEnabled ? (value) => setState(() => groupValue = value) : null, | ||
| label: Text(option2), | ||
| ), | ||
| ZetaButton( | ||
| label: isEnabled ? 'Disable' : 'Enable', | ||
| onPressed: () => setState(() => isEnabled = !isEnabled), | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:widgetbook/widgetbook.dart'; | ||
| import 'package:zeta_flutter/zeta_flutter.dart'; | ||
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| import '../../test/test_components.dart'; | ||
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| Widget radioButtonUseCase(BuildContext context) { | ||
| String option1 = 'Label 1'; | ||
| String option2 = 'Label 2'; | ||
| String? groupValue; | ||
|
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| return WidgetbookTestWidget( | ||
| widget: StatefulBuilder( | ||
| builder: (context, setState) { | ||
| ValueChanged<String?>? onChanged = context.knobs.boolean(label: 'Enabled', initialValue: true) | ||
| ? (value) => setState(() => groupValue = value) | ||
| : null; | ||
| return Padding( | ||
| padding: const EdgeInsets.all(ZetaSpacing.x5), | ||
| child: Column( | ||
| children: [ | ||
| Padding( | ||
| padding: const EdgeInsets.only(bottom: ZetaSpacing.x5), | ||
| child: Text('Radio Button'), | ||
| ), | ||
| ZetaRadio<String>( | ||
| value: option1, | ||
| groupValue: groupValue, | ||
| onChanged: onChanged, | ||
| label: Text(option1), | ||
| ), | ||
| ZetaRadio<String>( | ||
| value: option2, | ||
| groupValue: groupValue, | ||
| onChanged: onChanged, | ||
| label: Text(option2), | ||
| ), | ||
| ], | ||
| ), | ||
| ); | ||
| }, | ||
| ), | ||
| ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| import 'package:flutter/foundation.dart'; | ||
| import 'package:flutter/material.dart'; | ||
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| import '../../../zeta_flutter.dart'; | ||
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| /// Zeta Radio Button | ||
| /// | ||
| /// Radio Button can select one single option from a goup of different options. | ||
| class ZetaRadio<T> extends StatefulWidget { | ||
| /// Constructor for [ZetaRadio]. | ||
| const ZetaRadio({ | ||
| super.key, | ||
| required this.value, | ||
| this.groupValue, | ||
| this.onChanged, | ||
| this.label, | ||
| }); | ||
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| /// The value of the option, which can be selected by this Radio Button. | ||
| final T value; | ||
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| /// The selected value among all possible options. | ||
| final T? groupValue; | ||
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| /// Callback function to call when the Radio Button is tapped. | ||
| final ValueChanged<T?>? onChanged; | ||
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| /// The label which appears next to the Radio Button, on the right side. | ||
| final Widget? label; | ||
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| bool get _selected => value == groupValue; | ||
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| @override | ||
| State<ZetaRadio<T>> createState() => _ZetaRadioState<T>(); | ||
|
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| @override | ||
| void debugFillProperties(DiagnosticPropertiesBuilder properties) { | ||
| super.debugFillProperties(properties); | ||
| properties | ||
| ..add(DiagnosticsProperty<T>('value', value)) | ||
| ..add(DiagnosticsProperty<T?>('groupValue', groupValue)) | ||
| ..add(ObjectFlagProperty<ValueChanged<T?>?>('onChanged', onChanged, ifNull: 'disabled')); | ||
| } | ||
| } | ||
|
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| class _ZetaRadioState<T> extends State<ZetaRadio<T>> with TickerProviderStateMixin, ToggleableStateMixin { | ||
| final ToggleablePainter _painter = _RadioPainter(); | ||
| @override | ||
| Widget build(BuildContext context) { | ||
| final zetaColors = Zeta.of(context).colors; | ||
| return Row( | ||
| mainAxisSize: MainAxisSize.min, | ||
| children: [ | ||
| Semantics( | ||
| inMutuallyExclusiveGroup: true, | ||
| checked: widget._selected, | ||
| selected: value, | ||
| child: buildToggleable( | ||
| size: const Size(36, 36), | ||
| painter: _painter | ||
| ..position = position | ||
| ..reaction = reaction | ||
| ..reactionFocusFade = reactionFocusFade | ||
| ..reactionHoverFade = reactionHoverFade | ||
| ..inactiveReactionColor = Colors.transparent | ||
| ..reactionColor = Colors.transparent | ||
| ..hoverColor = Colors.transparent | ||
| ..focusColor = zetaColors.blue.shade50 | ||
| ..splashRadius = 12 | ||
| ..downPosition = downPosition | ||
| ..isFocused = states.contains(MaterialState.focused) | ||
| ..isHovered = states.contains(MaterialState.hovered) | ||
| ..activeColor = | ||
| states.contains(MaterialState.disabled) ? zetaColors.cool.shade30 : zetaColors.blue.shade60 | ||
| ..inactiveColor = | ||
| states.contains(MaterialState.disabled) ? zetaColors.cool.shade30 : zetaColors.cool.shade70, | ||
| mouseCursor: MaterialStateProperty.all( | ||
| MaterialStateProperty.resolveAs<MouseCursor>( | ||
| MaterialStateMouseCursor.clickable, | ||
| states, | ||
| ), | ||
| ), | ||
| ), | ||
| ), | ||
| if (widget.label != null) | ||
| GestureDetector( | ||
| onTap: () => onChanged?.call(true), | ||
| child: DefaultTextStyle( | ||
| style: ZetaTextStyles.bodyLarge.copyWith( | ||
| color: states.contains(MaterialState.disabled) ? zetaColors.textDisabled : zetaColors.textDefault, | ||
| height: 1.33, | ||
| ), | ||
| child: widget.label!, | ||
| ), | ||
| ), | ||
| ], | ||
| ); | ||
| } | ||
|
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| void _handleChanged(bool? selected) { | ||
| if (selected == null) { | ||
| widget.onChanged!(null); | ||
| return; | ||
| } | ||
| if (selected) { | ||
| widget.onChanged!(widget.value); | ||
| } | ||
| } | ||
|
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| @override | ||
| ValueChanged<bool?>? get onChanged => widget.onChanged != null ? _handleChanged : null; | ||
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| @override | ||
| bool get tristate => false; | ||
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| @override | ||
| bool get value => widget._selected; | ||
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| @override | ||
| void didUpdateWidget(ZetaRadio<T> oldWidget) { | ||
| super.didUpdateWidget(oldWidget); | ||
| if (widget._selected != oldWidget._selected) { | ||
| animateToValue(); | ||
| } | ||
| } | ||
|
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| @override | ||
| void dispose() { | ||
| _painter.dispose(); | ||
| super.dispose(); | ||
| } | ||
| } | ||
|
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| const double _kOuterRadius = 10; | ||
| const double _kInnerRadius = 5; | ||
|
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| class _RadioPainter extends ToggleablePainter { | ||
| @override | ||
| void paint(Canvas canvas, Size size) { | ||
| paintRadialReaction(canvas: canvas, origin: size.center(Offset.zero)); | ||
|
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| final Offset center = (Offset.zero & size).center; | ||
|
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| // Outer circle | ||
| final Paint paint = Paint() | ||
| ..color = Color.lerp(inactiveColor, activeColor, position.value)! | ||
| ..style = PaintingStyle.stroke | ||
| ..strokeWidth = 2; | ||
| canvas.drawCircle(center, _kOuterRadius, paint); | ||
|
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| // Inner circle | ||
| if (!position.isDismissed) { | ||
| paint.style = PaintingStyle.fill; | ||
| canvas.drawCircle(center, _kInnerRadius * position.value, paint); | ||
| } | ||
| } | ||
| } |
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