Add compose attachments preview
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@ -177,10 +177,11 @@ class AssetCollectionViewController: UICollectionViewController {
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}
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override func collectionView(_ collectionView: UICollectionView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
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if let indexPath = (configuration.identifier as? NSIndexPath) as IndexPath?, let cell = collectionView.cellForItem(at: indexPath) {
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if let indexPath = (configuration.identifier as? NSIndexPath) as IndexPath?,
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let cell = collectionView.cellForItem(at: indexPath) as? AssetCollectionViewCell {
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let parameters = UIPreviewParameters()
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parameters.backgroundColor = .black
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return UITargetedPreview(view: cell, parameters: parameters)
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return UITargetedPreview(view: cell.imageView, parameters: parameters)
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} else {
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return nil
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}
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@ -13,14 +13,18 @@ import AVKit
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class AssetPreviewViewController: UIViewController {
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let asset: PHAsset
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let attachment: CompositionAttachmentData
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init(asset: PHAsset) {
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self.asset = asset
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init(attachment: CompositionAttachmentData) {
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self.attachment = attachment
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super.init(nibName: nil, bundle: nil)
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}
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convenience init(asset: PHAsset) {
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self.init(attachment: .asset(asset))
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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@ -30,21 +34,29 @@ class AssetPreviewViewController: UIViewController {
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view.backgroundColor = .black
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if asset.mediaType == .image {
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switch attachment {
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case let .image(image):
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showImage(image)
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case let .video(url):
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showVideo(asset: AVURLAsset(url: url))
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case let .asset(asset):
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switch asset.mediaType {
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case .image:
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if asset.mediaSubtypes.contains(.photoLive) {
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showLivePhoto()
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showLivePhoto(asset)
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} else {
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showImage()
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showAssetImage(asset)
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}
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} else if asset.mediaType == .video {
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playVideo()
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} else {
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case .video:
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showAssetVideo(asset)
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default:
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fatalError("asset mediaType must be image or video")
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}
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}
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}
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func showImage() {
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let imageView = UIImageView()
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func showImage(_ image: UIImage) {
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let imageView = UIImageView(image: image)
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imageView.translatesAutoresizingMaskIntoConstraints = false
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imageView.contentMode = .scaleAspectFit
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view.addSubview(imageView)
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@ -54,7 +66,10 @@ class AssetPreviewViewController: UIViewController {
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imageView.topAnchor.constraint(equalTo: view.topAnchor),
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imageView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
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])
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preferredContentSize = image.size
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}
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func showAssetImage(_ asset: PHAsset) {
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let options = PHImageRequestOptions()
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options.version = .current
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options.deliveryMode = .opportunistic
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@ -62,13 +77,12 @@ class AssetPreviewViewController: UIViewController {
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options.isNetworkAccessAllowed = true
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PHImageManager.default().requestImage(for: asset, targetSize: view.bounds.size, contentMode: .aspectFit, options: options) { (image, _) in
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DispatchQueue.main.async {
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imageView.image = image
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self.preferredContentSize = image!.size
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self.showImage(image!)
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}
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}
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}
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func showLivePhoto() {
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func showLivePhoto(_ asset: PHAsset) {
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let options = PHLivePhotoRequestOptions()
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options.deliveryMode = .opportunistic
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options.version = .current
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@ -96,7 +110,18 @@ class AssetPreviewViewController: UIViewController {
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}
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}
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func playVideo() {
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func showVideo(asset: AVAsset) {
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let playerController = AVPlayerViewController()
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let item = AVPlayerItem(asset: asset)
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let player = AVPlayer(playerItem: item)
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player.isMuted = true
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player.play()
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playerController.player = player
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self.embedChild(playerController)
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self.preferredContentSize = item.presentationSize
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}
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func showAssetVideo(_ asset: PHAsset) {
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let options = PHVideoRequestOptions()
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options.deliveryMode = .automatic
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options.isNetworkAccessAllowed = true
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@ -106,14 +131,7 @@ class AssetPreviewViewController: UIViewController {
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fatalError("failed to get AVAsset")
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}
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DispatchQueue.main.async {
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let playerController = AVPlayerViewController()
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let item = AVPlayerItem(asset: avAsset)
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let player = AVPlayer(playerItem: item)
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player.isMuted = true
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player.play()
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playerController.player = player
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self.embedChild(playerController)
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self.preferredContentSize = item.presentationSize
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self.showVideo(asset: avAsset)
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}
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}
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}
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@ -265,6 +265,37 @@ class ComposeAttachmentsViewController: UITableViewController {
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}
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}
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override func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
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let attachment = attachments[indexPath.row]
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// cast to NSIndexPath because identifier needs to conform to NSCopying
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return UIContextMenuConfiguration(identifier: indexPath as NSIndexPath, previewProvider: { () -> UIViewController? in
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return AssetPreviewViewController(attachment: attachment.data)
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}) { (_) -> UIMenu? in
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return nil
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}
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}
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private func targetedPreview(forConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
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if let indexPath = (configuration.identifier as? NSIndexPath) as IndexPath?,
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let cell = tableView.cellForRow(at: indexPath) as? ComposeAttachmentTableViewCell {
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let parameters = UIPreviewParameters()
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parameters.backgroundColor = .black
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return UITargetedPreview(view: cell.assetImageView, parameters: parameters)
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} else {
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return nil
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}
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}
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override func tableView(_ tableView: UITableView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
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return targetedPreview(forConfiguration: configuration)
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}
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override func tableView(_ tableView: UITableView, previewForDismissingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
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return targetedPreview(forConfiguration: configuration)
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}
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// MARK: Interaction
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func addAttachmentPressed() {
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let sheetContainer = AssetPickerSheetContainerViewController()
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sheetContainer.assetPicker.assetPickerDelegate = self
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