95 lines
3.1 KiB
Swift
95 lines
3.1 KiB
Swift
//
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// ComposeAttachmentTableViewCell.swift
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// Tusker
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//
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// Created by Shadowfacts on 3/13/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import UIKit
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import Photos
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import AVFoundation
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protocol ComposeAttachmentTableViewCellDelegate: class {
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func removeAttachment(_ cell: ComposeAttachmentTableViewCell)
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func attachmentDescriptionChanged(_ cell: ComposeAttachmentTableViewCell)
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}
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class ComposeAttachmentTableViewCell: UITableViewCell {
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weak var delegate: ComposeAttachmentTableViewCellDelegate?
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@IBOutlet weak var assetImageView: UIImageView!
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@IBOutlet weak var descriptionTextView: UITextView!
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@IBOutlet weak var descriptionPlaceholderLabel: UILabel!
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@IBOutlet weak var removeButton: UIButton!
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var attachment: CompositionAttachment!
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override func awakeFromNib() {
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super.awakeFromNib()
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assetImageView.layer.masksToBounds = true
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assetImageView.layer.cornerRadius = 8
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descriptionTextView.delegate = self
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}
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func updateUI(for attachment: CompositionAttachment) {
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self.attachment = attachment
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descriptionTextView.text = attachment.attachmentDescription
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updateDescriptionPlaceholderLabel()
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assetImageView.contentMode = .scaleAspectFill
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assetImageView.backgroundColor = .secondarySystemBackground
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switch attachment.data {
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case let .image(image):
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assetImageView.image = image
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case let .asset(asset):
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let size = CGSize(width: 80, height: 80)
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PHImageManager.default().requestImage(for: asset, targetSize: size, contentMode: .aspectFill, options: nil) { (image, _) in
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guard self.attachment == attachment else { return }
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self.assetImageView.image = image
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}
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case let .video(url):
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let asset = AVURLAsset(url: url)
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let imageGenerator = AVAssetImageGenerator(asset: asset)
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if let cgImage = try? imageGenerator.copyCGImage(at: .zero, actualTime: nil) {
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assetImageView.image = UIImage(cgImage: cgImage)
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}
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case let .drawing(drawing):
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assetImageView.image = drawing.imageInLightMode(from: drawing.bounds)
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assetImageView.contentMode = .scaleAspectFit
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assetImageView.backgroundColor = .white
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}
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}
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func updateDescriptionPlaceholderLabel() {
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descriptionPlaceholderLabel.isHidden = !descriptionTextView.text.isEmpty
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}
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func setEnabled(_ enabled: Bool) {
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descriptionTextView.isEditable = enabled
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removeButton.isEnabled = enabled
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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assetImageView.image = nil
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}
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@IBAction func removeButtonPressed(_ sender: Any) {
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delegate?.removeAttachment(self)
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}
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}
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extension ComposeAttachmentTableViewCell: UITextViewDelegate {
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func textViewDidChange(_ textView: UITextView) {
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attachment.attachmentDescription = textView.text
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updateDescriptionPlaceholderLabel()
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delegate?.attachmentDescriptionChanged(self)
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}
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}
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