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Adds onStateChange callback

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This commit is contained in:
matt Sullivan
2021-06-21 14:34:56 -07:00
parent 3ba7956f67
commit 84d99621c9
5 changed files with 81 additions and 10 deletions
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19
example/lib/little_machine.dart
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@ -15,6 +15,9 @@ class _LittleMachineState extends State<LittleMachine> {
/// Tracks if the animation is playing by whether controller is running.
bool get isPlaying => _controller?.isActive ?? false;
/// Message that displays when state has changed
String stateChangeMessage = '';
Artboard? _riveArtboard;
StateMachineController? _controller;
SMIInput<bool>? _trigger;
@ -33,8 +36,11 @@ class _LittleMachineState extends State<LittleMachine> {
// The artboard is the root of the animation and gets drawn in the
// Rive widget.
final artboard = file.mainArtboard;
var controller =
StateMachineController.fromArtboard(artboard, 'State Machine 1');
var controller = StateMachineController.fromArtboard(
artboard,
'State Machine 1',
onStateChange: _onStateChange,
);
if (controller != null) {
artboard.addController(controller);
_trigger = controller.findInput('Trigger 1');
@ -44,6 +50,12 @@ class _LittleMachineState extends State<LittleMachine> {
);
}
/// Do something when the state machine changes state
void _onStateChange(String stateMachineName, String stateName) => setState(
() => stateChangeMessage =
'State Changed in $stateMachineName to $stateName',
);
@override
Widget build(BuildContext context) {
return Scaffold(
@ -71,6 +83,9 @@ class _LittleMachineState extends State<LittleMachine> {
artboard: _riveArtboard!,
),
),
const SizedBox(height: 10),
Text('$stateChangeMessage'),
const SizedBox(height: 10),
],
),
),