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feat: ✨ gradient colors #61

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feat: ✨ gradient colors #61

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26 changes: 24 additions & 2 deletions lib/flutter_switch.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,8 @@ class FlutterSwitch extends StatefulWidget {
this.inactiveIcon,
this.duration = const Duration(milliseconds: 200),
this.disabled = false,
this.activeGradient,
this.inactiveGradient,
}) : assert(
(switchBorder == null || activeSwitchBorder == null) &&
(switchBorder == null || inactiveSwitchBorder == null),
Expand All @@ -53,6 +55,11 @@ class FlutterSwitch extends StatefulWidget {
(toggleBorder == null || inactiveToggleBorder == null),
'Cannot provide toggleBorder when an activeToggleBorder or inactiveToggleBorder was given\n'
'To give the toggle a border, use "activeToggleBorder: color" or "inactiveToggleBorder: color".'),
assert(
(activeGradient != null && inactiveGradient != null) ||
(activeGradient == null && inactiveGradient == null),
'Must provide both gradients colors, active and inactive\n'
'There is no need for active and inactive colors when gradients colors are defined'),
super(key: key);

/// Determines if the switch is on or off.
Expand Down Expand Up @@ -251,6 +258,16 @@ class FlutterSwitch extends StatefulWidget {
/// Defaults to the value of false.
final bool disabled;

/// The gradient to use on the switch when the switch is on.
///
/// When is defined `activeColor` is not used
final Gradient? activeGradient;

/// The gradient to use on the switch when the switch is off.
///
/// When is defined `inactiveColor` is not used
final Gradient? inactiveGradient;

@override
_FlutterSwitchState createState() => _FlutterSwitchState();
}
Expand Down Expand Up @@ -301,19 +318,22 @@ class _FlutterSwitchState extends State<FlutterSwitch>
Widget build(BuildContext context) {
Color _toggleColor = Colors.white;
Color _switchColor = Colors.white;
Gradient? _gradient;
Border? _switchBorder;
Border? _toggleBorder;

if (widget.value) {
_toggleColor = widget.activeToggleColor ?? widget.toggleColor;
_switchColor = widget.activeColor;
_gradient = widget.activeGradient;
_switchBorder = widget.activeSwitchBorder as Border? ??
widget.switchBorder as Border?;
_toggleBorder = widget.activeToggleBorder as Border? ??
widget.toggleBorder as Border?;
} else {
_toggleColor = widget.inactiveToggleColor ?? widget.toggleColor;
_switchColor = widget.inactiveColor;
_gradient = widget.inactiveGradient;
_switchBorder = widget.inactiveSwitchBorder as Border? ??
widget.switchBorder as Border?;
_toggleBorder = widget.inactiveToggleBorder as Border? ??
Expand Down Expand Up @@ -347,8 +367,9 @@ class _FlutterSwitchState extends State<FlutterSwitch>
padding: EdgeInsets.all(widget.padding),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(widget.borderRadius),
color: _switchColor,
color: _gradient == null ? _switchColor : null,
border: _switchBorder,
gradient: _gradient,
),
child: Stack(
children: <Widget>[
Expand Down Expand Up @@ -377,7 +398,8 @@ class _FlutterSwitchState extends State<FlutterSwitch>
),
Container(
child: Align(
alignment: _toggleAnimation.value,
alignment:
_toggleAnimation.value as AlignmentGeometry,
child: Container(
width: widget.toggleSize,
height: widget.toggleSize,
Expand Down