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Demo/Demo/Gravatar-UIKit-Demo/DemoImageCropperViewController.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,123 @@ | ||
| #if DEBUG | ||
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| import UIKit | ||
| @testable import GravatarUI | ||
| import PhotosUI | ||
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| class DemoImageCropperViewController: UIViewController { | ||
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| lazy var selectImageButton: UIButton = { | ||
| let button = UIButton(type: .system) | ||
| button.translatesAutoresizingMaskIntoConstraints = false | ||
| button.setTitle("Select Image", for: .normal) | ||
| button.addTarget(self, action: #selector(selectImage), for: .touchUpInside) | ||
| return button | ||
| }() | ||
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| lazy var croppedImageView: UIImageView = { | ||
| let imageView = UIImageView() | ||
| imageView.translatesAutoresizingMaskIntoConstraints = false | ||
| imageView.contentMode = .scaleAspectFit | ||
| imageView.widthAnchor.constraint(equalToConstant: 300).isActive = true | ||
| imageView.heightAnchor.constraint(equalToConstant: 300).isActive = true | ||
| imageView.backgroundColor = UIColor.secondarySystemBackground | ||
| return imageView | ||
| }() | ||
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| lazy var sizeLabel: UILabel = { | ||
| let label = UILabel() | ||
| label.translatesAutoresizingMaskIntoConstraints = false | ||
| label.textColor = UIColor.label | ||
| label.numberOfLines = 0 | ||
| return label | ||
| }() | ||
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| lazy var rootStackView: UIStackView = { | ||
| let stack = UIStackView(arrangedSubviews: [selectImageButton, croppedImageView, sizeLabel]) | ||
| stack.translatesAutoresizingMaskIntoConstraints = false | ||
| stack.axis = .vertical | ||
| stack.spacing = 12 | ||
| stack.distribution = .fill | ||
| stack.alignment = .center | ||
| return stack | ||
| }() | ||
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| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
| view.backgroundColor = UIColor.systemBackground | ||
| view.addSubview(rootStackView) | ||
| NSLayoutConstraint.activate([ | ||
| rootStackView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor), | ||
| rootStackView.leadingAnchor.constraint(equalTo: view.leadingAnchor), | ||
| rootStackView.trailingAnchor.constraint(equalTo: view.trailingAnchor) | ||
| ]) | ||
| } | ||
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| @objc private func selectImage() { | ||
| var configuration = PHPickerConfiguration() | ||
| configuration.filter = .images // Only show images in picker | ||
| configuration.selectionLimit = 1 // Limit selection to one image | ||
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| let picker = PHPickerViewController(configuration: configuration) | ||
| picker.delegate = self | ||
| present(picker, animated: true, completion: nil) | ||
| } | ||
| } | ||
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| extension DemoImageCropperViewController: PHPickerViewControllerDelegate { | ||
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| func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) { | ||
| dismiss(animated: true, completion: nil) | ||
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| // Ensure the user selected an image and that it can be loaded as a UIImage | ||
| guard let result = results.first else { return } | ||
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| // Load the selected image | ||
| if result.itemProvider.canLoadObject(ofClass: UIImage.self) { | ||
| result.itemProvider.loadObject(ofClass: UIImage.self) { [weak self] (object, error) in | ||
| if let image = object as? UIImage { | ||
| DispatchQueue.main.async { | ||
| self?.showCropper(with: image) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| // Show the cropper with the selected image | ||
| func showCropper(with image: UIImage) { | ||
| let cropperVC = ImageCropperViewController.wrappedInNavigationViewController(image: image) { image, _ in | ||
| self.croppedImageView.image = image | ||
| self.sizeLabel.text = "\(image.size.width) x \(image.size.height) - scale: \(image.scale) - \(image.calculateSizeInMB())MB" | ||
| self.dismiss(animated: true) | ||
| } onCancel: { | ||
| self.dismiss(animated: true) | ||
| } | ||
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| present(cropperVC, animated: true, completion: nil) | ||
| } | ||
| } | ||
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| private extension UIImage { | ||
| // Function to calculate and print the size of the UIImage in megabytes | ||
| func calculateSizeInMB() -> Double { | ||
| guard let cgImage = self.cgImage else { return 0.0 } | ||
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| // Get the width and height of the image | ||
| let width = cgImage.width | ||
| let height = cgImage.height | ||
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| // Assume 4 bytes per pixel for RGBA (32-bit color depth) | ||
| let bytesPerPixel = 4 | ||
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| // Calculate the total number of bytes | ||
| let totalBytes = width * height * bytesPerPixel | ||
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| // Convert bytes to megabytes | ||
| let totalMB = Double(totalBytes) / (1024.0 * 1024.0) | ||
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| return Double(round(100 * totalMB) / 100) | ||
| } | ||
| } | ||
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| #endif |
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25 changes: 25 additions & 0 deletions
25
Sources/GravatarUI/ImageCropper/CropFrameOverlayView.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| import UIKit | ||
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| class CropFrameOverlayView: UIView { | ||
| var scrollViewFrame: CGRect = .zero { | ||
| didSet { | ||
| setNeedsDisplay() | ||
| } | ||
| } | ||
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| override func draw(_ rect: CGRect) { | ||
| guard let context = UIGraphicsGetCurrentContext() else { return } | ||
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| // Fill the entire view with a semi black color | ||
| context.setFillColor(UIColor.black.withAlphaComponent(0.5).cgColor) | ||
| context.fill(rect) | ||
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| // Clear the scrollView's area to make it transparent | ||
| context.clear(scrollViewFrame) | ||
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| // Draw a border around the crop frame | ||
| context.setStrokeColor(UIColor.white.cgColor) | ||
| context.setLineWidth(1) | ||
| context.stroke(scrollViewFrame) | ||
| } | ||
| } |
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