| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/services.dart'; |
| import 'package:meta/meta.dart' show immutable; |
| |
| import 'aspect_ratio_strategy.dart'; |
| import 'camerax_library.g.dart'; |
| import 'instance_manager.dart'; |
| import 'java_object.dart'; |
| import 'resolution_strategy.dart'; |
| |
| /// A set of requirements and priorities used to select a resolution for a |
| /// UseCase. |
| /// |
| /// See https://developer.android.com/reference/androidx/camera/core/resolutionselector/ResolutionSelector. |
| @immutable |
| class ResolutionSelector extends JavaObject { |
| /// Construct a [ResolutionSelector]. |
| ResolutionSelector({ |
| this.resolutionStrategy, |
| this.aspectRatioStrategy, |
| super.binaryMessenger, |
| super.instanceManager, |
| }) : _api = _ResolutionSelectorHostApiImpl( |
| instanceManager: instanceManager, |
| binaryMessenger: binaryMessenger, |
| ), |
| super.detached() { |
| _api.createFromInstances(this, resolutionStrategy, aspectRatioStrategy); |
| } |
| |
| /// Instantiates a [ResolutionSelector] without creating and attaching to an |
| /// instance of the associated native class. |
| /// |
| /// This should only be used outside of tests by subclasses created by this |
| /// library or to create a copy for an [InstanceManager]. |
| ResolutionSelector.detached({ |
| this.resolutionStrategy, |
| this.aspectRatioStrategy, |
| super.binaryMessenger, |
| super.instanceManager, |
| }) : _api = _ResolutionSelectorHostApiImpl( |
| instanceManager: instanceManager, |
| binaryMessenger: binaryMessenger, |
| ), |
| super.detached(); |
| |
| final _ResolutionSelectorHostApiImpl _api; |
| |
| /// Determines how the UseCase will choose the resolution of the captured |
| /// image. |
| final ResolutionStrategy? resolutionStrategy; |
| |
| /// Determines how the UseCase will choose the aspect ratio of the captured |
| /// image. |
| final AspectRatioStrategy? aspectRatioStrategy; |
| } |
| |
| /// Host API implementation of [ResolutionSelector]. |
| class _ResolutionSelectorHostApiImpl extends ResolutionSelectorHostApi { |
| /// Constructs an [_ResolutionSelectorHostApiImpl]. |
| /// |
| /// If [binaryMessenger] is null, the default [BinaryMessenger] will be used, |
| /// which routes to the host platform. |
| /// |
| /// An [instanceManager] is typically passed when a copy of an instance |
| /// contained by an [InstanceManager] is being created. If left null, it |
| /// will default to the global instance defined in [JavaObject]. |
| _ResolutionSelectorHostApiImpl({ |
| this.binaryMessenger, |
| InstanceManager? instanceManager, |
| }) : instanceManager = instanceManager ?? JavaObject.globalInstanceManager, |
| super(binaryMessenger: binaryMessenger); |
| |
| /// Receives binary data across the Flutter platform barrier. |
| final BinaryMessenger? binaryMessenger; |
| |
| /// Maintains instances stored to communicate with native language objects. |
| final InstanceManager instanceManager; |
| |
| /// Creates a [ResolutionSelector] on the native side with the |
| /// [ResolutionStrategy] and [AspectRatioStrategy] if specified. |
| Future<void> createFromInstances( |
| ResolutionSelector instance, |
| ResolutionStrategy? resolutionStrategy, |
| AspectRatioStrategy? aspectRatioStrategy, |
| ) { |
| return create( |
| instanceManager.addDartCreatedInstance( |
| instance, |
| onCopy: (ResolutionSelector original) => ResolutionSelector.detached( |
| resolutionStrategy: original.resolutionStrategy, |
| aspectRatioStrategy: original.aspectRatioStrategy, |
| binaryMessenger: binaryMessenger, |
| instanceManager: instanceManager, |
| ), |
| ), |
| resolutionStrategy == null |
| ? null |
| : instanceManager.getIdentifier(resolutionStrategy)!, |
| aspectRatioStrategy == null |
| ? null |
| : instanceManager.getIdentifier(aspectRatioStrategy)!, |
| ); |
| } |
| } |