| // Copyright 2017 The Chromium 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 'dart:async'; |
| |
| import 'package:meta/meta.dart' show required; |
| import 'package:plugin_platform_interface/plugin_platform_interface.dart'; |
| |
| import 'package:image_picker_platform_interface/src/method_channel/method_channel_image_picker.dart'; |
| import 'package:image_picker_platform_interface/src/types/types.dart'; |
| |
| /// The interface that implementations of image_picker must implement. |
| /// |
| /// Platform implementations should extend this class rather than implement it as `image_picker` |
| /// does not consider newly added methods to be breaking changes. Extending this class |
| /// (using `extends`) ensures that the subclass will get the default implementation, while |
| /// platform implementations that `implements` this interface will be broken by newly added |
| /// [ImagePickerPlatform] methods. |
| abstract class ImagePickerPlatform extends PlatformInterface { |
| /// Constructs a ImagePickerPlatform. |
| ImagePickerPlatform() : super(token: _token); |
| |
| static final Object _token = Object(); |
| |
| static ImagePickerPlatform _instance = MethodChannelImagePicker(); |
| |
| /// The default instance of [ImagePickerPlatform] to use. |
| /// |
| /// Defaults to [MethodChannelImagePicker]. |
| static ImagePickerPlatform get instance => _instance; |
| |
| /// Platform-specific plugins should set this with their own platform-specific |
| /// class that extends [ImagePickerPlatform] when they register themselves. |
| // TODO(amirh): Extract common platform interface logic. |
| // https://github.com/flutter/flutter/issues/43368 |
| static set instance(ImagePickerPlatform instance) { |
| PlatformInterface.verifyToken(instance, _token); |
| _instance = instance; |
| } |
| |
| /// Returns a [String] containing a path to the image that was picked. |
| /// |
| /// The `source` argument controls where the image comes from. This can |
| /// be either [ImageSource.camera] or [ImageSource.gallery]. |
| /// |
| /// If specified, the image will be at most `maxWidth` wide and |
| /// `maxHeight` tall. Otherwise the image will be returned at it's |
| /// original width and height. |
| /// |
| /// The `imageQuality` argument modifies the quality of the image, ranging from 0-100 |
| /// where 100 is the original/max quality. If `imageQuality` is null, the image with |
| /// the original quality will be returned. Compression is only supported for certain |
| /// image types such as JPEG and on Android PNG and WebP, too. If compression is not supported for the image that is picked, |
| /// a warning message will be logged. |
| /// |
| /// Use `preferredCameraDevice` to specify the camera to use when the `source` is [ImageSource.camera]. |
| /// The `preferredCameraDevice` is ignored when `source` is [ImageSource.gallery]. It is also ignored if the chosen camera is not supported on the device. |
| /// Defaults to [CameraDevice.rear]. |
| /// |
| /// In Android, the MainActivity can be destroyed for various reasons. If that happens, the result will be lost |
| /// in this call. You can then call [retrieveLostDataAsDartIoFile] when your app relaunches to retrieve the lost data. |
| @Deprecated('Use pickImage instead.') |
| Future<String> pickImagePath({ |
| @required ImageSource source, |
| double maxWidth, |
| double maxHeight, |
| int imageQuality, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| }) { |
| throw UnimplementedError('legacyPickImage() has not been implemented.'); |
| } |
| |
| /// Returns a [String] containing a path to the video that was picked. |
| /// |
| /// The [source] argument controls where the video comes from. This can |
| /// be either [ImageSource.camera] or [ImageSource.gallery]. |
| /// |
| /// The [maxDuration] argument specifies the maximum duration of the captured video. If no [maxDuration] is specified, |
| /// the maximum duration will be infinite. |
| /// |
| /// Use `preferredCameraDevice` to specify the camera to use when the `source` is [ImageSource.camera]. |
| /// The `preferredCameraDevice` is ignored when `source` is [ImageSource.gallery]. It is also ignored if the chosen camera is not supported on the device. |
| /// Defaults to [CameraDevice.rear]. |
| /// |
| /// In Android, the MainActivity can be destroyed for various fo reasons. If that happens, the result will be lost |
| /// in this call. You can then call [retrieveLostDataAsDartIoFile] when your app relaunches to retrieve the lost data. |
| @Deprecated('Use pickVideo instead.') |
| Future<String> pickVideoPath({ |
| @required ImageSource source, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| Duration maxDuration, |
| }) { |
| throw UnimplementedError('pickVideoPath() has not been implemented.'); |
| } |
| |
| /// Retrieve the lost image file when [pickImagePath] or [pickVideoPath] failed because the MainActivity is destroyed. (Android only) |
| /// |
| /// Image or video can be lost if the MainActivity is destroyed. And there is no guarantee that the MainActivity is always alive. |
| /// Call this method to retrieve the lost data and process the data according to your APP's business logic. |
| /// |
| /// Returns a [LostDataResponse] if successfully retrieved the lost data. The [LostDataResponse] can represent either a |
| /// successful image/video selection, or a failure. |
| /// |
| /// Calling this on a non-Android platform will throw [UnimplementedError] exception. |
| /// |
| /// See also: |
| /// * [LostDataResponse], for what's included in the response. |
| /// * [Android Activity Lifecycle](https://developer.android.com/reference/android/app/Activity.html), for more information on MainActivity destruction. |
| @Deprecated('Use retrieveLostData instead.') |
| Future<LostDataResponse> retrieveLostDataAsDartIoFile() { |
| throw UnimplementedError( |
| 'retrieveLostDataAsDartIoFile() has not been implemented.'); |
| } |
| |
| // Next version of the API. |
| |
| /// Returns a [PickedFile] with the image that was picked. |
| /// |
| /// The `source` argument controls where the image comes from. This can |
| /// be either [ImageSource.camera] or [ImageSource.gallery]. |
| /// |
| /// Where iOS supports HEIC images, Android 8 and below doesn't. Android 9 and above only support HEIC images if used |
| /// in addition to a size modification, of which the usage is explained below. |
| /// |
| /// If specified, the image will be at most `maxWidth` wide and |
| /// `maxHeight` tall. Otherwise the image will be returned at it's |
| /// original width and height. |
| /// |
| /// The `imageQuality` argument modifies the quality of the image, ranging from 0-100 |
| /// where 100 is the original/max quality. If `imageQuality` is null, the image with |
| /// the original quality will be returned. Compression is only supportted for certain |
| /// image types such as JPEG. If compression is not supported for the image that is picked, |
| /// an warning message will be logged. |
| /// |
| /// Use `preferredCameraDevice` to specify the camera to use when the `source` is [ImageSource.camera]. |
| /// The `preferredCameraDevice` is ignored when `source` is [ImageSource.gallery]. It is also ignored if the chosen camera is not supported on the device. |
| /// Defaults to [CameraDevice.rear]. Note that Android has no documented parameter for an intent to specify if |
| /// the front or rear camera should be opened, this function is not guaranteed |
| /// to work on an Android device. |
| /// |
| /// In Android, the MainActivity can be destroyed for various reasons. If that happens, the result will be lost |
| /// in this call. You can then call [retrieveLostData] when your app relaunches to retrieve the lost data. |
| Future<PickedFile> pickImage({ |
| @required ImageSource source, |
| double maxWidth, |
| double maxHeight, |
| int imageQuality, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| }) { |
| throw UnimplementedError('pickImage() has not been implemented.'); |
| } |
| |
| /// Returns a [PickedFile] containing the video that was picked. |
| /// |
| /// The [source] argument controls where the video comes from. This can |
| /// be either [ImageSource.camera] or [ImageSource.gallery]. |
| /// |
| /// The [maxDuration] argument specifies the maximum duration of the captured video. If no [maxDuration] is specified, |
| /// the maximum duration will be infinite. |
| /// |
| /// Use `preferredCameraDevice` to specify the camera to use when the `source` is [ImageSource.camera]. |
| /// The `preferredCameraDevice` is ignored when `source` is [ImageSource.gallery]. It is also ignored if the chosen camera is not supported on the device. |
| /// Defaults to [CameraDevice.rear]. |
| /// |
| /// In Android, the MainActivity can be destroyed for various fo reasons. If that happens, the result will be lost |
| /// in this call. You can then call [retrieveLostData] when your app relaunches to retrieve the lost data. |
| Future<PickedFile> pickVideo({ |
| @required ImageSource source, |
| CameraDevice preferredCameraDevice = CameraDevice.rear, |
| Duration maxDuration, |
| }) { |
| throw UnimplementedError('pickVideo() has not been implemented.'); |
| } |
| |
| /// Retrieve the lost [PickedFile] file when [pickImage] or [pickVideo] failed because the MainActivity is destroyed. (Android only) |
| /// |
| /// Image or video can be lost if the MainActivity is destroyed. And there is no guarantee that the MainActivity is always alive. |
| /// Call this method to retrieve the lost data and process the data according to your APP's business logic. |
| /// |
| /// Returns a [LostData] object if successfully retrieved the lost data. The [LostData] object can represent either a |
| /// successful image/video selection, or a failure. |
| /// |
| /// Calling this on a non-Android platform will throw [UnimplementedError] exception. |
| /// |
| /// See also: |
| /// * [LostData], for what's included in the response. |
| /// * [Android Activity Lifecycle](https://developer.android.com/reference/android/app/Activity.html), for more information on MainActivity destruction. |
| Future<LostData> retrieveLostData() { |
| throw UnimplementedError('retrieveLostData() has not been implemented.'); |
| } |
| } |