Created
July 10, 2024 16:38
-
-
Save Nidal-Bakir/b02ce3ac55ec583cf3b73b233b88ae2c to your computer and use it in GitHub Desktop.
Device type (phone/tablet) and orientation (landscape/portrait)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import 'dart:ui' as ui; | |
| import 'package:flutter/widgets.dart'; | |
| import 'package:wow_shopping/backend/backend.dart'; | |
| enum DeviceType { | |
| unknown, | |
| phone, | |
| tablet, | |
| } | |
| enum DeviceOrientation { | |
| unknown, | |
| portrait, | |
| landscape, | |
| } | |
| @immutable | |
| class DeviceTypeOrientationState { | |
| const DeviceTypeOrientationState({ | |
| required this.deviceType, | |
| required this.orientation, | |
| }); | |
| const DeviceTypeOrientationState.unknown() | |
| : deviceType = DeviceType.unknown, | |
| orientation = DeviceOrientation.unknown; | |
| final DeviceType deviceType; | |
| final DeviceOrientation orientation; | |
| bool get isTablet => deviceType == DeviceType.tablet; | |
| bool get isPhone => deviceType == DeviceType.phone; | |
| bool get isLandscape => orientation == DeviceOrientation.landscape; | |
| bool get isPortrait => orientation == DeviceOrientation.portrait; | |
| DeviceTypeOrientationState copyWith({ | |
| DeviceType? deviceType, | |
| DeviceOrientation? orientation, | |
| }) { | |
| return DeviceTypeOrientationState( | |
| deviceType: deviceType ?? this.deviceType, | |
| orientation: orientation ?? this.orientation, | |
| ); | |
| } | |
| } | |
| class DeviceTypeOrientationNotifier extends ChangeNotifier with WidgetsBindingObserver { | |
| DeviceTypeOrientationNotifier(); | |
| var _state = const DeviceTypeOrientationState.unknown(); | |
| bool get isTablet => _state.isTablet; | |
| bool get isPhone => _state.isPhone; | |
| bool get isLandscape => _state.isLandscape; | |
| bool get isPortrait => _state.isPortrait; | |
| void init() { | |
| WidgetsBinding.instance.addObserver(this); | |
| updateDeviceType(); | |
| } | |
| @override | |
| void didChangeMetrics() { | |
| super.didChangeMetrics(); | |
| updateDeviceType(); | |
| } | |
| void updateDeviceType() { | |
| final view = ui.PlatformDispatcher.instance.implicitView!; | |
| final size = view.physicalSize / view.devicePixelRatio; | |
| bool updated = false; | |
| final deviceType = (size.shortestSide < 600) // | |
| ? DeviceType.phone | |
| : DeviceType.tablet; | |
| if (deviceType != _state.deviceType) { | |
| debugPrint('Device Type changed to: $deviceType'); | |
| _state = _state.copyWith(deviceType: deviceType); | |
| updated = true; | |
| } | |
| final orientation = (size.width < size.height) // | |
| ? DeviceOrientation.portrait | |
| : DeviceOrientation.landscape; | |
| if (orientation != _state.orientation) { | |
| debugPrint('Orientation changed to: $orientation'); | |
| _state = _state.copyWith(orientation: orientation); | |
| updated = true; | |
| } | |
| if (updated) { | |
| notifyListeners(); | |
| } | |
| } | |
| @override | |
| void dispose() { | |
| WidgetsBinding.instance.removeObserver(this); | |
| super.dispose(); | |
| } | |
| } | |
| class DeviceTypeBuilder extends StatelessWidget { | |
| const DeviceTypeBuilder({ | |
| super.key, | |
| required this.builder, | |
| this.child, | |
| }); | |
| final Widget Function( | |
| BuildContext context, | |
| DeviceTypeOrientationState state, | |
| Widget? child, | |
| ) builder; | |
| final Widget? child; | |
| @override | |
| Widget build(BuildContext context) { | |
| return AnimatedBuilder( | |
| animation: context.deviceType, | |
| builder: (BuildContext context, Widget? child) { | |
| return builder(context, context.deviceType._state, child); | |
| }, | |
| child: child, | |
| ); | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment