42 lines
966 B
Dart
42 lines
966 B
Dart
import 'package:aves_magnifier/src/controller/state.dart';
|
|
import 'package:equatable/equatable.dart';
|
|
import 'package:flutter/widgets.dart';
|
|
|
|
@immutable
|
|
class ScaleStateChange extends Equatable {
|
|
final ScaleState state;
|
|
final ChangeSource source;
|
|
final Offset? childFocalPoint;
|
|
|
|
@override
|
|
List<Object?> get props => [state, source, childFocalPoint];
|
|
|
|
const ScaleStateChange({
|
|
required this.state,
|
|
required this.source,
|
|
this.childFocalPoint,
|
|
});
|
|
}
|
|
|
|
enum ScaleState {
|
|
initial,
|
|
covering,
|
|
originalSize,
|
|
zoomedIn,
|
|
zoomedOut,
|
|
}
|
|
|
|
ScaleState defaultScaleStateCycle(ScaleState actual) {
|
|
switch (actual) {
|
|
case ScaleState.initial:
|
|
return ScaleState.covering;
|
|
case ScaleState.covering:
|
|
return ScaleState.originalSize;
|
|
case ScaleState.originalSize:
|
|
case ScaleState.zoomedIn:
|
|
case ScaleState.zoomedOut:
|
|
return ScaleState.initial;
|
|
}
|
|
}
|
|
|
|
typedef ScaleStateCycle = ScaleState Function(ScaleState actual);
|