103 lines
3.5 KiB
Swift
103 lines
3.5 KiB
Swift
//
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// ImageContext.swift
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// Kingfisher
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//
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// Created by onevcat on 2021/05/08.
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//
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// Copyright (c) 2021 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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#if canImport(SwiftUI) && canImport(Combine)
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import SwiftUI
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import Combine
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@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
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extension KFImage {
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public class Context<HoldingView: KFImageHoldingView> {
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let source: Source?
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var options = KingfisherParsedOptionsInfo(
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KingfisherManager.shared.defaultOptions + [.loadDiskFileSynchronously]
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)
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var configurations: [(HoldingView) -> HoldingView] = []
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var renderConfigurations: [(HoldingView.RenderingView) -> Void] = []
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var contentConfiguration: ((HoldingView) -> AnyView)? = nil
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var cancelOnDisappear: Bool = false
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var placeholder: ((Progress) -> AnyView)? = nil
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let onFailureDelegate = Delegate<KingfisherError, Void>()
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let onSuccessDelegate = Delegate<RetrieveImageResult, Void>()
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let onProgressDelegate = Delegate<(Int64, Int64), Void>()
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var startLoadingBeforeViewAppear: Bool = false
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init(source: Source?) {
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self.source = source
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}
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func shouldApplyFade(cacheType: CacheType) -> Bool {
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options.forceTransition || cacheType == .none
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}
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func fadeTransitionDuration(cacheType: CacheType) -> TimeInterval? {
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shouldApplyFade(cacheType: cacheType)
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? options.transition.fadeDuration
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: nil
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}
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}
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}
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extension ImageTransition {
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// Only for fade effect in SwiftUI.
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fileprivate var fadeDuration: TimeInterval? {
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switch self {
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case .fade(let duration):
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return duration
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default:
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return nil
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}
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}
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}
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@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
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extension KFImage.Context: Hashable {
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public static func == (lhs: KFImage.Context<HoldingView>, rhs: KFImage.Context<HoldingView>) -> Bool {
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lhs.source == rhs.source &&
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lhs.options.processor.identifier == rhs.options.processor.identifier
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}
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public func hash(into hasher: inout Hasher) {
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hasher.combine(source)
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hasher.combine(options.processor.identifier)
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}
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}
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#if !os(watchOS)
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@available(iOS 14.0, macOS 11.0, tvOS 14.0, watchOS 7.0, *)
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extension KFAnimatedImage {
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public typealias Context = KFImage.Context
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typealias ImageBinder = KFImage.ImageBinder
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}
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#endif
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#endif
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