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Add task cancellation

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This commit is contained in:
Ali 2022-06-10 17:05:29 +04:00
parent ef727ee08e
commit 0608b573f9
1 changed files with 21 additions and 7 deletions
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22
submodules/AnimatedStickerNode/Sources/DirectAnimatedStickerNode.swift
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@ -10,6 +10,7 @@ public final class DirectAnimatedStickerNode: ASDisplayNode, AnimatedStickerNode
private static let sharedQueue = Queue(name: "DirectAnimatedStickerNode", qos: .userInteractive)
private final class LoadFrameTask {
var isCancelled: Bool = false
}
public var automaticallyLoadFirstFrame: Bool = false
@ -129,7 +130,7 @@ public final class DirectAnimatedStickerNode: ASDisplayNode, AnimatedStickerNode
}
private func startNextFrameTimerIfNeeded() {
if self.nextFrameTimer == nil, let lottieInstance = self.lottieInstance {
if self.nextFrameTimer == nil, let lottieInstance = self.lottieInstance, self.frameImages[self.frameIndex] != nil {
let nextFrameTimer = SwiftSignalKit.Timer(timeout: 1.0 / Double(lottieInstance.frameRate), repeat: false, completion: { [weak self] in
guard let strongSelf = self else {
return
@ -201,6 +202,12 @@ public final class DirectAnimatedStickerNode: ASDisplayNode, AnimatedStickerNode
self.frameImages.removeValue(forKey: index)
}
for (index, task) in self.loadFrameTasks {
if !allowedIndices.contains(index) {
task.isCancelled = true
}
}
if let image = self.frameImages[self.frameIndex] {
self.layer.contents = image.cgImage
@ -238,22 +245,29 @@ public final class DirectAnimatedStickerNode: ASDisplayNode, AnimatedStickerNode
return
}
self.loadFrameTasks[frameIndex] = LoadFrameTask()
let task = LoadFrameTask()
self.loadFrameTasks[frameIndex] = task
DirectAnimatedStickerNode.sharedQueue.async { [weak self] in
var image: UIImage?
if !task.isCancelled {
let drawingContext = DrawingContext(size: playbackSize, scale: 1.0, opaque: false, clear: false)
lottieInstance.renderFrame(with: Int32(frameIndex), into: drawingContext.bytes.assumingMemoryBound(to: UInt8.self), width: Int32(drawingContext.scaledSize.width), height: Int32(drawingContext.scaledSize.height), bytesPerRow: Int32(drawingContext.bytesPerRow))
let image = drawingContext.generateImage()
image = drawingContext.generateImage()
}
Queue.mainQueue().async {
guard let strongSelf = self else {
return
}
if let currentTask = strongSelf.loadFrameTasks[frameIndex], currentTask === task {
strongSelf.loadFrameTasks.removeValue(forKey: frameIndex)
}
if let image = image {
if !task.isCancelled, let image = image {
strongSelf.frameImages[frameIndex] = image
strongSelf.updateFrameImageIfNeeded()
strongSelf.updateLoadFrameTasks()