linphone-iphone/Linphone/Utils/PhotoPicker.swift
2023-11-06 15:16:41 +01:00

85 lines
2.5 KiB
Swift

/*
* Copyright (c) 2010-2023 Belledonne Communications SARL.
*
* This file is part of linphone-iphone
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import SwiftUI
import PhotosUI
struct PhotoPicker: UIViewControllerRepresentable {
typealias UIViewControllerType = PHPickerViewController
let filter: PHPickerFilter
var limit: Int = 0
let onComplete: ([PHPickerResult]) -> Void
func makeUIViewController(context: Context) -> PHPickerViewController {
var configuration = PHPickerConfiguration()
configuration.filter = filter
configuration.selectionLimit = limit
let controller = PHPickerViewController(configuration: configuration)
controller.delegate = context.coordinator
return controller
}
static func convertToUIImageArray(fromResults results: [PHPickerResult], onComplete: @escaping ([UIImage]?, Error?) -> Void) {
var images = [UIImage]()
let dispatchGroup = DispatchGroup()
for result in results {
dispatchGroup.enter()
let itemProvider = result.itemProvider
if itemProvider.canLoadObject(ofClass: UIImage.self) {
itemProvider.loadObject(ofClass: UIImage.self) { (imageOrNil, errorOrNil) in
if let error = errorOrNil {
onComplete(nil, error)
}
if let image = imageOrNil as? UIImage {
images.append(image)
}
dispatchGroup.leave()
}
}
}
dispatchGroup.notify(queue: .main) {
onComplete(images, nil)
}
}
func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) {}
func makeCoordinator() -> Coordinator {
return Coordinator(self)
}
class Coordinator: PHPickerViewControllerDelegate {
private let parent: PhotoPicker
init(_ parent: PhotoPicker) {
self.parent = parent
}
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
picker.dismiss(animated: true)
parent.onComplete(results)
}
}
}