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