Upload ViewController.swift

Multi-threading_Practice/ViewController.swift

+//
+//  ViewController1.swift
+//  FOSS_PR
+//
+//  Created by 김사랑 on 2024/06/23.
+//
+
+import UIKit
+
+class ViewController: UIViewController {
+
+    var collectionView: UICollectionView!
+    var images: [UIImage] = []
+    var originalImages: [UIImage] = []
+
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        setupCollectionView()
+        setupButtons()
+    }
+
+    func setupCollectionView() {
+        let layout = UICollectionViewFlowLayout()
+        layout.itemSize = CGSize(width: view.frame.width - 20, height: 300)
+        layout.scrollDirection = .vertical
+        collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
+        collectionView.dataSource = self
+        collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "cell")
+        collectionView.backgroundColor = .white
+        view.addSubview(collectionView)
+    }
+
+    func setupButtons() {
+        let downloadButton = createButton(withTitle: "이미지 불러오기", action: #selector(downloadAndProcessImages))
+        downloadButton.center = CGPoint(x: self.view.center.x, y: self.view.frame.height - 130)
+        let filterButton = createButton(withTitle: "흑백 필터  적용하기", action: #selector(applyFilterToImages))
+        filterButton.center = CGPoint(x: self.view.center.x, y: self.view.frame.height - 90)
+        let resetButton = createButton(withTitle: "되돌리기", action: #selector(resetImages))
+        resetButton.center = CGPoint(x: self.view.center.x, y: self.view.frame.height - 50)
+
+        view.addSubview(downloadButton)
+        view.addSubview(filterButton)
+        view.addSubview(resetButton)
+    }
+
+    func createButton(withTitle title: String, action: Selector) -> UIButton {
+        let button = UIButton(type: .system)
+        button.setTitle(title, for: .normal)
+        button.backgroundColor = .lightGray
+        button.layer.cornerRadius = 10
+        button.layer.masksToBounds = true
+        button.titleLabel?.font = UIFont.systemFont(ofSize: 18, weight: .regular)
+        button.setTitleColor(.black, for: .normal)
+        button.backgroundColor = .init(red: 0.89, green: 0, blue: 1, alpha: 0.5)
+        button.frame = CGRect(x: 0, y: 0, width: 170, height: 30)
+        button.addTarget(self, action: action, for: .touchUpInside)
+        return button
+    }
+
+    @objc func downloadAndProcessImages() {
+        loadImagesUsingOperationQueue()
+    }
+    @objc func applyFilterToImages() {
+        applyFilterUsingOperationQueue()
+    }
+    @objc func resetImages() {
+        resetImagesUsingOperationQueue()
+    }
+
+}
+
+extension ViewController: UICollectionViewDataSource {
+
+    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
+        return images.count
+    }
+
+    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
+        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)
+        for view in cell.contentView.subviews {
+            view.removeFromSuperview()
+        }
+
+        let imageView = UIImageView(image: images[indexPath.item])
+        imageView.frame = cell.contentView.frame
+        cell.contentView.addSubview(imageView)
+        return cell
+    }
+}