|
|
@@ -0,0 +1,81 @@
|
|
|
+//
|
|
|
+// PHPickerResultImageDataProvider.swift
|
|
|
+// Kingfisher
|
|
|
+//
|
|
|
+// Created by nuomi1 on 2024-04-17.
|
|
|
+//
|
|
|
+// Copyright (c) 2024 Wei Wang <onevcat@gmail.com>
|
|
|
+//
|
|
|
+// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
+// of this software and associated documentation files (the "Software"), to deal
|
|
|
+// in the Software without restriction, including without limitation the rights
|
|
|
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
+// copies of the Software, and to permit persons to whom the Software is
|
|
|
+// furnished to do so, subject to the following conditions:
|
|
|
+//
|
|
|
+// The above copyright notice and this permission notice shall be included in
|
|
|
+// all copies or substantial portions of the Software.
|
|
|
+//
|
|
|
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
|
+// THE SOFTWARE.
|
|
|
+
|
|
|
+import Foundation
|
|
|
+import PhotosUI
|
|
|
+
|
|
|
+/// A data provider to provide image data from a given `PHPickerResult`.
|
|
|
+@available(iOS 14.0, macOS 13.0, *)
|
|
|
+@available(watchOS, unavailable)
|
|
|
+@available(tvOS, unavailable)
|
|
|
+public struct PHPickerResultImageDataProvider: ImageDataProvider {
|
|
|
+
|
|
|
+ /// The possible error might be caused by the `PHPickerResultImageDataProvider`.
|
|
|
+ /// - invalidImage: The retrieved image is invalid.
|
|
|
+ public enum PHPickerResultImageDataProviderError: Error {
|
|
|
+ /// The retrieved image is invalid.
|
|
|
+ case invalidImage
|
|
|
+ }
|
|
|
+
|
|
|
+ /// The picker result bound to `self`.
|
|
|
+ public let pickerResult: PHPickerResult
|
|
|
+
|
|
|
+ /// The content type of the image.
|
|
|
+ public let contentType: UTType
|
|
|
+
|
|
|
+ private var internalKey: String {
|
|
|
+ pickerResult.assetIdentifier ?? UUID().uuidString
|
|
|
+ }
|
|
|
+
|
|
|
+ public var cacheKey: String {
|
|
|
+ "\(internalKey)_\(contentType.identifier)"
|
|
|
+ }
|
|
|
+
|
|
|
+ /// Creates an image data provider from a given `PHPickerResult`.
|
|
|
+ /// - Parameters:
|
|
|
+ /// - pickerResult: The picker result to provide image data.
|
|
|
+ /// - contentType: The content type of the image. Default is `UTType.image`.
|
|
|
+ public init(pickerResult: PHPickerResult, contentType: UTType = UTType.image) {
|
|
|
+ self.pickerResult = pickerResult
|
|
|
+ self.contentType = contentType
|
|
|
+ }
|
|
|
+
|
|
|
+ public func data(handler: @escaping (Result<Data, Error>) -> Void) {
|
|
|
+ pickerResult.itemProvider.loadDataRepresentation(forTypeIdentifier: contentType.identifier) { data, error in
|
|
|
+ if let error {
|
|
|
+ handler(.failure(error))
|
|
|
+ return
|
|
|
+ }
|
|
|
+
|
|
|
+ guard let data else {
|
|
|
+ handler(.failure(PHPickerResultImageDataProviderError.invalidImage))
|
|
|
+ return
|
|
|
+ }
|
|
|
+
|
|
|
+ handler(.success(data))
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
nuomi1