- Crop picture widget.
- 裁切圖片小工具.
dependencies: [
.package(url: "https://github.com/William-Weng/WWCropViewController.git", .upToNextMajor(from: "1.0.0"))
]
| 函式 | 功能 |
|---|---|
| build() | 建立WWCropViewController |
| cropPhoto() | 裁切圖片 |
| cropViewTypeSetting(_:) | 設定縮放框比例 / 種類 (1:1 / 4:3 / 16:9) |
| recoverOriginalPhoto() | 還原成一開始的照片 |
| updateCropViewBackgroundColor(_:) | 設定縮放框的底色 |
| angleImagesSetting(_:) | 設定縮放的四角圖示 (↖左上 / ↗右上 / ↙左下 / ↘右下) |
import UIKit
import WWPrint
import WWCropViewController
final class ViewController: UIViewController {
@IBOutlet weak var containerView: UIView!
private var cropViewController: WWCropViewController?
override func viewDidLoad() {
super.viewDidLoad()
containerViewSetting()
}
@IBAction func cropPhotoAction(_ sender: UIButton) { _ = cropViewController?.cropPhoto() }
@IBAction func recoverPhotoAction(_ sender: UIButton) { _ = cropViewController?.recoverOriginalPhoto() }
@IBAction func cropViewTypeAction1(_ sender: UIButton) { cropViewController?.cropViewTypeSetting(.rectangle) }
@IBAction func cropViewTypeAction2(_ sender: UIButton) { cropViewController?.cropViewTypeSetting(.scaleRectangle(.to4_3)) }
@IBAction func cropViewTypeAction3(_ sender: UIButton) { cropViewController?.cropViewTypeSetting(.scaleRectangle(.to9_16)) }
}
extension ViewController {
private func containerViewSetting() {
guard let viewController = WWCropViewController.build() else { return }
cropViewController = viewController
viewController.photo = #imageLiteral(resourceName: "Wallpaper")
viewController.angleZoomViewImages = ([#imageLiteral(resourceName: "Angle_LeftTop"), #imageLiteral(resourceName: "Angle_RightTop"), #imageLiteral(resourceName: "Angle_LefttBottom"), #imageLiteral(resourceName: "Angle_RightBottom")])
viewController.cropViewBackgroundColor = .blue.withAlphaComponent(0.3)
viewController.cropViewType = .circle
self._changeContainerView(to: viewController, at: containerView)
}
}
extension UIViewController {
/// [改變ContainerView](https://disp.cc/b/11-9XMd)
/// - Parameters:
/// - oldViewController: UIViewController
/// - newViewController: UIViewController
/// - containerView: UIView
func _changeContainerView(from oldViewController: UIViewController? = nil ,to newViewController: UIViewController, at containerView: UIView) {
oldViewController?.willMove(toParent: nil)
oldViewController?.view.removeFromSuperview()
oldViewController?.removeFromParent()
addChild(newViewController)
containerView.addSubview(newViewController.view)
newViewController.view.frame = containerView.frame
newViewController.didMove(toParent: self)
}
}