// // ZLClipImageViewController.swift // ZLPhotoBrowser // // Created by long on 2020/8/27. // // Copyright (c) 2020 Long Zhang <495181165@qq.com> // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. import UIKit extension ZLClipImageViewController { enum ClipPanEdge { case none case top case bottom case left case right case topLeft case topRight case bottomLeft case bottomRight } } class ZLClipImageViewController: UIViewController { static let bottomToolViewH: CGFloat = 90 static let clipRatioItemSize: CGSize = CGSize(width: 60, height: 70) var animate = true /// 用作进入裁剪界面首次动画frame var presentAnimateFrame: CGRect? /// 用作进入裁剪界面首次动画和取消裁剪时动画的image var presentAnimateImage: UIImage? /// 取消裁剪时动画frame var cancelClipAnimateFrame: CGRect = .zero var viewDidAppearCount = 0 let originalImage: UIImage let clipRatios: [ZLImageClipRatio] var editImage: UIImage /// 初次进入界面时候，裁剪范围 var editRect: CGRect var scrollView: UIScrollView! var containerView: UIView! var imageView: UIImageView! var shadowView: ZLClipShadowView! var overlayView: ZLClipOverlayView! var gridPanGes: UIPanGestureRecognizer! var bottomToolView: UIView! var bottomShadowLayer: CAGradientLayer! var bottomToolLineView: UIView! var cancelBtn: UIButton! var revertBtn: UIButton! var doneBtn: UIButton! var rotateBtn: UIButton! var clipRatioColView: UICollectionView! var shouldLayout = true var panEdge: ZLClipImageViewController.ClipPanEdge = .none var beginPanPoint: CGPoint = .zero var clipBoxFrame: CGRect = .zero var clipOriginFrame: CGRect = .zero var isRotating = false var angle: CGFloat = 0 var selectedRatio: ZLImageClipRatio var thumbnailImage: UIImage? lazy var maxClipFrame: CGRect = { var insets = deviceSafeAreaInsets() insets.top += 20 var rect = CGRect.zero rect.origin.x = 15 rect.origin.y = insets.top rect.size.width = UIScreen.main.bounds.width - 15 * 2 rect.size.height = UIScreen.main.bounds.height - insets.top - ZLClipImageViewController.bottomToolViewH - ZLClipImageViewController.clipRatioItemSize.height - 25 return rect }() var minClipSize = CGSize(width: 45, height: 45) var resetTimer: Timer? var dismissAnimateFromRect: CGRect = .zero var dismissAnimateImage: UIImage? = nil /// 传回旋转角度，图片编辑区域的rect var clipDoneBlock: ( (CGFloat, CGRect, ZLImageClipRatio) -> Void )? var cancelClipBlock: ( () -> Void )? override var prefersStatusBarHidden: Bool { return true } override var supportedInterfaceOrientations: UIInterfaceOrientationMask { return .portrait } deinit { zl_debugPrint("ZLClipImageViewController deinit") self.cleanTimer() } init(image: UIImage, editRect: CGRect?, angle: CGFloat = 0, selectRatio: ZLImageClipRatio?) { self.originalImage = image self.clipRatios = ZLPhotoConfiguration.default().editImageClipRatios self.editRect = editRect ?? .zero self.angle = angle if angle == -90 { self.editImage = image.rotate(orientation: .left) } else if self.angle == -180 { self.editImage = image.rotate(orientation: .down) } else if self.angle == -270 { self.editImage = image.rotate(orientation: .right) } else { self.editImage = image } var firstEnter = false if let sr = selectRatio { self.selectedRatio = sr } else { firstEnter = true self.selectedRatio = ZLPhotoConfiguration.default().editImageClipRatios.first! } super.init(nibName: nil, bundle: nil) if firstEnter { self.calculateClipRect() } } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func viewDidLoad() { super.viewDidLoad() self.setupUI() self.generateThumbnailImage() } override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) self.viewDidAppearCount += 1 if self.presentingViewController is ZLEditImageViewController { self.transitioningDelegate = self } guard self.viewDidAppearCount == 1 else { return } if let frame = self.presentAnimateFrame, let image = self.presentAnimateImage { let animateImageView = UIImageView(image: image) animateImageView.contentMode = .scaleAspectFill animateImageView.clipsToBounds = true animateImageView.frame = frame self.view.addSubview(animateImageView) self.cancelClipAnimateFrame = self.clipBoxFrame UIView.animate(withDuration: 0.25, animations: { animateImageView.frame = self.clipBoxFrame self.bottomToolView.alpha = 1 self.rotateBtn.alpha = 1 }) { (_) in UIView.animate(withDuration: 0.1, animations: { self.scrollView.alpha = 1 self.overlayView.alpha = 1 }) { (_) in animateImageView.removeFromSuperview() } } } else { self.bottomToolView.alpha = 1 self.rotateBtn.alpha = 1 self.scrollView.alpha = 1 self.overlayView.alpha = 1 } } override func viewDidLayoutSubviews() { super.viewDidLayoutSubviews() guard self.shouldLayout else { return } self.shouldLayout = false self.scrollView.frame = self.view.bounds self.shadowView.frame = self.view.bounds self.layoutInitialImage() self.bottomToolView.frame = CGRect(x: 0, y: self.view.bounds.height-ZLClipImageViewController.bottomToolViewH, width: self.view.bounds.width, height: ZLClipImageViewController.bottomToolViewH) self.bottomShadowLayer.frame = self.bottomToolView.bounds self.bottomToolLineView.frame = CGRect(x: 0, y: 0, width: self.view.bounds.width, height: 1/UIScreen.main.scale) let toolBtnH: CGFloat = 25 let toolBtnY = (ZLClipImageViewController.bottomToolViewH - toolBtnH) / 2 - 10 self.cancelBtn.frame = CGRect(x: 30, y: toolBtnY, width: toolBtnH, height: toolBtnH) let revertBtnW = localLanguageTextValue(.revert).boundingRect(font: ZLLayout.bottomToolTitleFont, limitSize: CGSize(width: CGFloat.greatestFiniteMagnitude, height: toolBtnH)).width + 20 self.revertBtn.frame = CGRect(x: (self.view.bounds.width-revertBtnW)/2, y: toolBtnY, width: revertBtnW, height: toolBtnH) self.doneBtn.frame = CGRect(x: self.view.bounds.width-30-toolBtnH, y: toolBtnY, width: toolBtnH, height: toolBtnH) let ratioColViewY = self.bottomToolView.frame.minY - ZLClipImageViewController.clipRatioItemSize.height - 5 self.rotateBtn.frame = CGRect(x: 30, y: ratioColViewY + (ZLClipImageViewController.clipRatioItemSize.height-25)/2, width: 25, height: 25) let ratioColViewX = self.rotateBtn.frame.maxX + 15 self.clipRatioColView.frame = CGRect(x: ratioColViewX, y: ratioColViewY, width: self.view.bounds.width - ratioColViewX, height: 70) if self.clipRatios.count > 1, let index = self.clipRatios.firstIndex(where: { $0 == self.selectedRatio}) { self.clipRatioColView.scrollToItem(at: IndexPath(row: index, section: 0), at: .centeredHorizontally, animated: false) } } func setupUI() { self.view.backgroundColor = .black self.scrollView = UIScrollView() self.scrollView.alwaysBounceVertical = true self.scrollView.alwaysBounceHorizontal = true self.scrollView.showsVerticalScrollIndicator = false self.scrollView.showsHorizontalScrollIndicator = false if #available(iOS 11.0, *) { self.scrollView.contentInsetAdjustmentBehavior = .never } else { // Fallback on earlier versions } self.scrollView.delegate = self self.view.addSubview(self.scrollView) self.containerView = UIView() self.scrollView.addSubview(self.containerView) self.imageView = UIImageView(image: self.editImage) self.imageView.contentMode = .scaleAspectFit self.imageView.clipsToBounds = true self.containerView.addSubview(self.imageView) self.shadowView = ZLClipShadowView() self.shadowView.isUserInteractionEnabled = false self.shadowView.backgroundColor = UIColor.black.withAlphaComponent(0.3) self.view.addSubview(self.shadowView) self.overlayView = ZLClipOverlayView() self.overlayView.isUserInteractionEnabled = false self.view.addSubview(self.overlayView) self.bottomToolView = UIView() self.view.addSubview(self.bottomToolView) let color1 = UIColor.black.withAlphaComponent(0.15).cgColor let color2 = UIColor.black.withAlphaComponent(0.35).cgColor self.bottomShadowLayer = CAGradientLayer() self.bottomShadowLayer.colors = [color1, color2] self.bottomShadowLayer.locations = [0, 1] self.bottomToolView.layer.addSublayer(self.bottomShadowLayer) self.bottomToolLineView = UIView() self.bottomToolLineView.backgroundColor = zlRGB(240, 240, 240) self.bottomToolView.addSubview(self.bottomToolLineView) self.cancelBtn = UIButton(type: .custom) self.cancelBtn.setImage(getImage("zl_close"), for: .normal) self.cancelBtn.adjustsImageWhenHighlighted = false self.cancelBtn.zl_enlargeValidTouchArea(inset: 20) self.cancelBtn.addTarget(self, action: #selector(cancelBtnClick), for: .touchUpInside) self.bottomToolView.addSubview(self.cancelBtn) self.revertBtn = UIButton(type: .custom) self.revertBtn.setTitleColor(.white, for: .normal) self.revertBtn.setTitle(localLanguageTextValue(.revert), for: .normal) self.revertBtn.zl_enlargeValidTouchArea(inset: 20) self.revertBtn.titleLabel?.font = ZLLayout.bottomToolTitleFont self.revertBtn.addTarget(self, action: #selector(revertBtnClick), for: .touchUpInside) self.bottomToolView.addSubview(self.revertBtn) self.doneBtn = UIButton(type: .custom) self.doneBtn.setImage(getImage("zl_right"), for: .normal) self.doneBtn.adjustsImageWhenHighlighted = false self.doneBtn.zl_enlargeValidTouchArea(inset: 20) self.doneBtn.addTarget(self, action: #selector(doneBtnClick), for: .touchUpInside) self.bottomToolView.addSubview(self.doneBtn) self.rotateBtn = UIButton(type: .custom) self.rotateBtn.setImage(getImage("zl_rotateimage"), for: .normal) self.rotateBtn.adjustsImageWhenHighlighted = false self.rotateBtn.zl_enlargeValidTouchArea(inset: 20) self.rotateBtn.addTarget(self, action: #selector(rotateBtnClick), for: .touchUpInside) self.view.addSubview(self.rotateBtn) let layout = UICollectionViewFlowLayout() layout.itemSize = ZLClipImageViewController.clipRatioItemSize layout.scrollDirection = .horizontal layout.sectionInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 20) self.clipRatioColView = UICollectionView(frame: .zero, collectionViewLayout: layout) self.clipRatioColView.delegate = self self.clipRatioColView.dataSource = self self.clipRatioColView.backgroundColor = .clear self.clipRatioColView.isHidden = self.clipRatios.count <= 1 self.clipRatioColView.showsHorizontalScrollIndicator = false self.view.addSubview(self.clipRatioColView) ZLImageClipRatioCell.zl_register(self.clipRatioColView) self.gridPanGes = UIPanGestureRecognizer(target: self, action: #selector(gridGesPanAction(_:))) self.gridPanGes.delegate = self self.view.addGestureRecognizer(self.gridPanGes) self.scrollView.panGestureRecognizer.require(toFail: self.gridPanGes) self.scrollView.alpha = 0 self.overlayView.alpha = 0 self.bottomToolView.alpha = 0 self.rotateBtn.alpha = 0 } func generateThumbnailImage() { let size: CGSize let ratio = (self.editImage.size.width / self.editImage.size.height) let fixLength: CGFloat = 100 if ratio >= 1 { size = CGSize(width: fixLength * ratio, height: fixLength) } else { size = CGSize(width: fixLength, height: fixLength / ratio) } self.thumbnailImage = self.editImage.resize(size) } func calculateClipRect() { if self.selectedRatio.whRatio == 0 { self.editRect = CGRect(origin: .zero, size: self.editImage.size) } else { let imageSize = self.editImage.size let imageWHRatio = imageSize.width / imageSize.height var w: CGFloat = 0, h: CGFloat = 0 if self.selectedRatio.whRatio >= imageWHRatio { w = imageSize.width h = w / self.selectedRatio.whRatio } else { h = imageSize.height w = h * self.selectedRatio.whRatio } self.editRect = CGRect(x: (imageSize.width - w) / 2, y: (imageSize.height - h) / 2, width: w, height: h) } } func layoutInitialImage() { self.scrollView.minimumZoomScale = 1 self.scrollView.maximumZoomScale = 1 self.scrollView.zoomScale = 1 let editSize = self.editRect.size self.scrollView.contentSize = editSize let maxClipRect = self.maxClipFrame self.containerView.frame = CGRect(origin: .zero, size: self.editImage.size) self.imageView.frame = self.containerView.bounds // editRect比例，计算editRect所占frame let editScale = min(maxClipRect.width/editSize.width, maxClipRect.height/editSize.height) let scaledSize = CGSize(width: floor(editSize.width * editScale), height: floor(editSize.height * editScale)) var frame = CGRect.zero frame.size = scaledSize frame.origin.x = maxClipRect.minX + floor((maxClipRect.width-frame.width) / 2) frame.origin.y = maxClipRect.minY + floor((maxClipRect.height-frame.height) / 2) // 按照edit image进行计算最小缩放比例 let originalScale = min(maxClipRect.width/self.editImage.size.width, maxClipRect.height/self.editImage.size.height) // 将 edit rect 相对 originalScale 进行缩放，缩放到图片未放大时候的clip rect let scaleEditSize = CGSize(width: self.editRect.width * originalScale, height: self.editRect.height * originalScale) // 计算缩放后的clip rect相对maxClipRect的比例 let clipRectZoomScale = min(maxClipRect.width/scaleEditSize.width, maxClipRect.height/scaleEditSize.height) self.scrollView.minimumZoomScale = originalScale self.scrollView.maximumZoomScale = 10 // 设置当前zoom scale let zoomScale = (clipRectZoomScale * originalScale) self.scrollView.zoomScale = zoomScale self.scrollView.contentSize = CGSize(width: self.editImage.size.width * zoomScale, height: self.editImage.size.height * zoomScale) self.changeClipBoxFrame(newFrame: frame) if (frame.size.width < scaledSize.width - CGFloat.ulpOfOne) || (frame.size.height < scaledSize.height - CGFloat.ulpOfOne) { var offset = CGPoint.zero offset.x = -floor((self.scrollView.frame.width - scaledSize.width) / 2) offset.y = -floor((self.scrollView.frame.height - scaledSize.height) / 2) self.scrollView.contentOffset = offset } // edit rect 相对 image size 的 偏移量 let diffX = self.editRect.origin.x / self.editImage.size.width * self.scrollView.contentSize.width let diffY = self.editRect.origin.y / self.editImage.size.height * self.scrollView.contentSize.height self.scrollView.contentOffset = CGPoint(x: -self.scrollView.contentInset.left+diffX, y: -self.scrollView.contentInset.top+diffY) } func changeClipBoxFrame(newFrame: CGRect) { guard self.clipBoxFrame != newFrame else { return } if newFrame.width < CGFloat.ulpOfOne || newFrame.height < CGFloat.ulpOfOne { return } var frame = newFrame let originX = ceil(self.maxClipFrame.minX) let diffX = frame.minX - originX frame.origin.x = max(frame.minX, originX) // frame.origin.x = floor(max(frame.minX, originX)) if diffX < -CGFloat.ulpOfOne { frame.size.width += diffX } let originY = ceil(self.maxClipFrame.minY) let diffY = frame.minY - originY frame.origin.y = max(frame.minY, originY) // frame.origin.y = floor(max(frame.minY, originY)) if diffY < -CGFloat.ulpOfOne { frame.size.height += diffY } let maxW = self.maxClipFrame.width + self.maxClipFrame.minX - frame.minX frame.size.width = max(self.minClipSize.width, min(frame.width, maxW)) // frame.size.width = floor(max(self.minClipSize.width, min(frame.width, maxW))) let maxH = self.maxClipFrame.height + self.maxClipFrame.minY - frame.minY frame.size.height = max(self.minClipSize.height, min(frame.height, maxH)) // frame.size.height = floor(max(self.minClipSize.height, min(frame.height, maxH))) self.clipBoxFrame = frame self.shadowView.clearRect = frame self.overlayView.frame = frame.insetBy(dx: -ZLClipOverlayView.cornerLineWidth, dy: -ZLClipOverlayView.cornerLineWidth) self.scrollView.contentInset = UIEdgeInsets(top: frame.minY, left: frame.minX, bottom: self.scrollView.frame.maxY-frame.maxY, right: self.scrollView.frame.maxX-frame.maxX) let scale = max(frame.height/self.editImage.size.height, frame.width/self.editImage.size.width) self.scrollView.minimumZoomScale = scale // var size = self.scrollView.contentSize // size.width = floor(size.width) // size.height = floor(size.height) // self.scrollView.contentSize = size self.scrollView.zoomScale = self.scrollView.zoomScale } @objc func cancelBtnClick() { self.dismissAnimateFromRect = self.cancelClipAnimateFrame self.dismissAnimateImage = self.presentAnimateImage self.cancelClipBlock?() self.dismiss(animated: self.animate, completion: nil) } @objc func revertBtnClick() { self.angle = 0 self.editImage = self.originalImage self.calculateClipRect() self.imageView.image = self.editImage self.layoutInitialImage() self.generateThumbnailImage() self.clipRatioColView.reloadData() } @objc func doneBtnClick() { let image = self.clipImage() self.dismissAnimateFromRect = self.clipBoxFrame self.dismissAnimateImage = image.clipImage self.clipDoneBlock?(self.angle, image.editRect, self.selectedRatio) self.dismiss(animated: self.animate, completion: nil) } @objc func rotateBtnClick() { guard !self.isRotating else { return } self.angle -= 90 if self.angle == -360 { self.angle = 0 } self.isRotating = true let animateImageView = UIImageView(image: self.editImage) animateImageView.contentMode = .scaleAspectFit animateImageView.clipsToBounds = true let originFrame = self.view.convert(self.containerView.frame, from: self.scrollView) animateImageView.frame = originFrame self.view.addSubview(animateImageView) if self.selectedRatio.whRatio == 0 || self.selectedRatio.whRatio == 1 { // 自由比例和1:1比例，进行edit rect转换 // 将edit rect转换为相对edit image的rect let rect = self.convertClipRectToEditImageRect() // 旋转图片 self.editImage = self.editImage.rotate(orientation: .left) // 将rect进行旋转，转换到相对于旋转后的edit image的rect self.editRect = CGRect(x: rect.minY, y: self.editImage.size.height-rect.minX-rect.width, width: rect.height, height: rect.width) } else { // 其他比例的裁剪框，旋转后都重置edit rect // 旋转图片 self.editImage = self.editImage.rotate(orientation: .left) self.calculateClipRect() } self.imageView.image = self.editImage self.layoutInitialImage() let toFrame = self.view.convert(self.containerView.frame, from: self.scrollView) let transform = CGAffineTransform(rotationAngle: -CGFloat.pi/2) self.overlayView.alpha = 0 self.containerView.alpha = 0 UIView.animate(withDuration: 0.3, animations: { animateImageView.transform = transform animateImageView.frame = toFrame }) { (_) in animateImageView.removeFromSuperview() self.overlayView.alpha = 1 self.containerView.alpha = 1 self.isRotating = false } self.generateThumbnailImage() self.clipRatioColView.reloadData() } @objc func gridGesPanAction(_ pan: UIPanGestureRecognizer) { let point = pan.location(in: self.view) if pan.state == .began { self.startEditing() self.beginPanPoint = point self.clipOriginFrame = self.clipBoxFrame self.panEdge = self.calculatePanEdge(at: point) } else if pan.state == .changed { guard self.panEdge != .none else { return } self.updateClipBoxFrame(point: point) } else if pan.state == .cancelled || pan.state == .ended { self.panEdge = .none self.startTimer() } } func calculatePanEdge(at point: CGPoint) -> ZLClipImageViewController.ClipPanEdge { let frame = self.clipBoxFrame.insetBy(dx: -30, dy: -30) let cornerSize = CGSize(width: 60, height: 60) let topLeftRect = CGRect(origin: frame.origin, size: cornerSize) if topLeftRect.contains(point) { return .topLeft } let topRightRect = CGRect(origin: CGPoint(x: frame.maxX-cornerSize.width, y: frame.minY), size: cornerSize) if topRightRect.contains(point) { return .topRight } let bottomLeftRect = CGRect(origin: CGPoint(x: frame.minX, y: frame.maxY-cornerSize.height), size: cornerSize) if bottomLeftRect.contains(point) { return .bottomLeft } let bottomRightRect = CGRect(origin: CGPoint(x: frame.maxX-cornerSize.width, y: frame.maxY-cornerSize.height), size: cornerSize) if bottomRightRect.contains(point) { return .bottomRight } let topRect = CGRect(origin: frame.origin, size: CGSize(width: frame.width, height: cornerSize.height)) if topRect.contains(point) { return .top } let bottomRect = CGRect(origin: CGPoint(x: frame.minX, y: frame.maxY-cornerSize.height), size: CGSize(width: frame.width, height: cornerSize.height)) if bottomRect.contains(point) { return .bottom } let leftRect = CGRect(origin: frame.origin, size: CGSize(width: cornerSize.width, height: frame.height)) if leftRect.contains(point) { return .left } let rightRect = CGRect(origin: CGPoint(x: frame.maxX-cornerSize.width, y: frame.minY), size: CGSize(width: cornerSize.width, height: frame.height)) if rightRect.contains(point) { return .right } return .none } func updateClipBoxFrame(point: CGPoint) { var frame = self.clipBoxFrame let originFrame = self.clipOriginFrame var newPoint = point newPoint.x = max(self.maxClipFrame.minX, newPoint.x) newPoint.y = max(self.maxClipFrame.minY, newPoint.y) let diffX = ceil(newPoint.x - self.beginPanPoint.x) let diffY = ceil(newPoint.y - self.beginPanPoint.y) let ratio = self.selectedRatio.whRatio switch self.panEdge { case .left: frame.origin.x = originFrame.minX + diffX frame.size.width = originFrame.width - diffX if ratio != 0 { frame.size.height = originFrame.height - diffX / ratio } case .right: frame.size.width = originFrame.width + diffX if ratio != 0 { frame.size.height = originFrame.height + diffX / ratio } case .top: frame.origin.y = originFrame.minY + diffY frame.size.height = originFrame.height - diffY if ratio != 0 { frame.size.width = originFrame.width - diffY * ratio } case .bottom: frame.size.height = originFrame.height + diffY if ratio != 0 { frame.size.width = originFrame.width + diffY * ratio } case .topLeft: if ratio != 0 { // if abs(diffX / ratio) >= abs(diffY) { frame.origin.x = originFrame.minX + diffX frame.size.width = originFrame.width - diffX frame.origin.y = originFrame.minY + diffX / ratio frame.size.height = originFrame.height - diffX / ratio // } else { // frame.origin.y = originFrame.minY + diffY // frame.size.height = originFrame.height - diffY // frame.origin.x = originFrame.minX + diffY * ratio // frame.size.width = originFrame.width - diffY * ratio // } } else { frame.origin.x = originFrame.minX + diffX frame.size.width = originFrame.width - diffX frame.origin.y = originFrame.minY + diffY frame.size.height = originFrame.height - diffY } case .topRight: if ratio != 0 { // if abs(diffX / ratio) >= abs(diffY) { frame.size.width = originFrame.width + diffX frame.origin.y = originFrame.minY - diffX / ratio frame.size.height = originFrame.height + diffX / ratio // } else { // frame.origin.y = originFrame.minY + diffY // frame.size.height = originFrame.height - diffY // frame.size.width = originFrame.width - diffY * ratio // } } else { frame.size.width = originFrame.width + diffX frame.origin.y = originFrame.minY + diffY frame.size.height = originFrame.height - diffY } case .bottomLeft: if ratio != 0 { // if abs(diffX / ratio) >= abs(diffY) { frame.origin.x = originFrame.minX + diffX frame.size.width = originFrame.width - diffX frame.size.height = originFrame.height - diffX / ratio // } else { // frame.origin.x = originFrame.minX - diffY * ratio // frame.size.width = originFrame.width + diffY * ratio // frame.size.height = originFrame.height + diffY // } } else { frame.origin.x = originFrame.minX + diffX frame.size.width = originFrame.width - diffX frame.size.height = originFrame.height + diffY } case .bottomRight: if ratio != 0 { // if abs(diffX / ratio) >= abs(diffY) { frame.size.width = originFrame.width + diffX frame.size.height = originFrame.height + diffX / ratio // } else { // frame.size.width += diffY * ratio // frame.size.height += diffY // } } else { frame.size.width = originFrame.width + diffX frame.size.height = originFrame.height + diffY } default: break } let minSize: CGSize let maxSize: CGSize let maxClipFrame: CGRect if ratio != 0 { if ratio >= 1 { minSize = CGSize(width: self.minClipSize.height * ratio, height: self.minClipSize.height) } else { minSize = CGSize(width: self.minClipSize.width, height: self.minClipSize.width / ratio) } if ratio > self.maxClipFrame.width / self.maxClipFrame.height { maxSize = CGSize(width: self.maxClipFrame.width, height: self.maxClipFrame.width / ratio) } else { maxSize = CGSize(width: self.maxClipFrame.height * ratio, height: self.maxClipFrame.height) } maxClipFrame = CGRect(origin: CGPoint(x: self.maxClipFrame.minX + (self.maxClipFrame.width-maxSize.width)/2, y: self.maxClipFrame.minY + (self.maxClipFrame.height-maxSize.height)/2), size: maxSize) } else { minSize = self.minClipSize maxSize = self.maxClipFrame.size maxClipFrame = self.maxClipFrame } frame.size.width = min(maxSize.width, max(minSize.width, frame.size.width)) frame.size.height = min(maxSize.height, max(minSize.height, frame.size.height)) frame.origin.x = min(maxClipFrame.maxX-minSize.width, max(frame.origin.x, maxClipFrame.minX)) frame.origin.y = min(maxClipFrame.maxY-minSize.height, max(frame.origin.y, maxClipFrame.minY)) if (self.panEdge == .topLeft || self.panEdge == .bottomLeft || self.panEdge == .left) && frame.size.width <= minSize.width + CGFloat.ulpOfOne { frame.origin.x = originFrame.maxX - minSize.width } if (self.panEdge == .topLeft || self.panEdge == .topRight || self.panEdge == .top) && frame.size.height <= minSize.height + CGFloat.ulpOfOne { frame.origin.y = originFrame.maxY - minSize.height } self.changeClipBoxFrame(newFrame: frame) } func startEditing() { self.cleanTimer() self.shadowView.alpha = 0 if self.rotateBtn.alpha != 0 { self.rotateBtn.layer.removeAllAnimations() self.clipRatioColView.layer.removeAllAnimations() UIView.animate(withDuration: 0.2) { self.rotateBtn.alpha = 0 self.clipRatioColView.alpha = 0 } } } func endEditing() { self.moveClipContentToCenter() } func startTimer() { self.cleanTimer() self.resetTimer = Timer.scheduledTimer(withTimeInterval: 0.8, repeats: false, block: { (timer) in self.cleanTimer() self.endEditing() }) } func cleanTimer() { self.resetTimer?.invalidate() self.resetTimer = nil } func moveClipContentToCenter() { let maxClipRect = self.maxClipFrame var clipRect = self.clipBoxFrame if clipRect.width < CGFloat.ulpOfOne || clipRect.height < CGFloat.ulpOfOne { return } let scale = min(maxClipRect.width/clipRect.width, maxClipRect.height/clipRect.height) let focusPoint = CGPoint(x: clipRect.midX, y: clipRect.midY) let midPoint = CGPoint(x: maxClipRect.midX, y: maxClipRect.midY) clipRect.size.width = ceil(clipRect.width * scale) clipRect.size.height = ceil(clipRect.height * scale) clipRect.origin.x = maxClipRect.minX + ceil((maxClipRect.width-clipRect.width)/2) clipRect.origin.y = maxClipRect.minY + ceil((maxClipRect.height-clipRect.height)/2) var contentTargetPoint = CGPoint.zero contentTargetPoint.x = (focusPoint.x + self.scrollView.contentOffset.x) * scale contentTargetPoint.y = (focusPoint.y + self.scrollView.contentOffset.y) * scale var offset = CGPoint(x: contentTargetPoint.x - midPoint.x, y: contentTargetPoint.y - midPoint.y) offset.x = max(-clipRect.minX, offset.x) offset.y = max(-clipRect.minY, offset.y) UIView.animate(withDuration: 0.3) { if scale < 1 - CGFloat.ulpOfOne || scale > 1 + CGFloat.ulpOfOne { self.scrollView.zoomScale *= scale self.scrollView.zoomScale = min(self.scrollView.maximumZoomScale, self.scrollView.zoomScale) } if self.scrollView.zoomScale < self.scrollView.maximumZoomScale - CGFloat.ulpOfOne { offset.x = min(self.scrollView.contentSize.width-clipRect.maxX, offset.x) offset.y = min(self.scrollView.contentSize.height-clipRect.maxY, offset.y) self.scrollView.contentOffset = offset } self.rotateBtn.alpha = 1 self.clipRatioColView.alpha = 1 self.shadowView.alpha = 1 self.changeClipBoxFrame(newFrame: clipRect) } } func clipImage() -> (clipImage: UIImage, editRect: CGRect) { let frame = self.convertClipRectToEditImageRect() let origin = CGPoint(x: -frame.minX, y: -frame.minY) UIGraphicsBeginImageContextWithOptions(frame.size, false, self.editImage.scale) self.editImage.draw(at: origin) let temp = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() guard let cgi = temp?.cgImage else { return (self.editImage, CGRect(origin: .zero, size: self.editImage.size)) } let newImage = UIImage(cgImage: cgi, scale: self.editImage.scale, orientation: .up) return (newImage, frame) } func convertClipRectToEditImageRect() -> CGRect { let imageSize = self.editImage.size let contentSize = self.scrollView.contentSize let offset = self.scrollView.contentOffset let insets = self.scrollView.contentInset var frame = CGRect.zero frame.origin.x = floor((offset.x + insets.left) * (imageSize.width / contentSize.width)) frame.origin.x = max(0, frame.origin.x) frame.origin.y = floor((offset.y + insets.top) * (imageSize.height / contentSize.height)) frame.origin.y = max(0, frame.origin.y) frame.size.width = ceil(self.clipBoxFrame.width * (imageSize.width / contentSize.width)) frame.size.width = min(imageSize.width, frame.width) frame.size.height = ceil(self.clipBoxFrame.height * (imageSize.height / contentSize.height)) frame.size.height = min(imageSize.height, frame.height) return frame } } extension ZLClipImageViewController: UIGestureRecognizerDelegate { func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool { guard gestureRecognizer == self.gridPanGes else { return true } let point = gestureRecognizer.location(in: self.view) let frame = self.overlayView.frame let innerFrame = frame.insetBy(dx: 22, dy: 22) let outerFrame = frame.insetBy(dx: -22, dy: -22) if innerFrame.contains(point) || !outerFrame.contains(point) { return false } return true } } extension ZLClipImageViewController: UICollectionViewDataSource, UICollectionViewDelegate { func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return self.clipRatios.count } func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCell(withReuseIdentifier: ZLImageClipRatioCell.zl_identifier(), for: indexPath) as! ZLImageClipRatioCell let ratio = self.clipRatios[indexPath.row] cell.configureCell(image: self.thumbnailImage ?? self.editImage, ratio: ratio) if ratio == self.selectedRatio { cell.titleLabel.textColor = .white } else { cell.titleLabel.textColor = zlRGB(160, 160, 160) } return cell } func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) { let ratio = self.clipRatios[indexPath.row] guard ratio != self.selectedRatio else { return } self.selectedRatio = ratio self.clipRatioColView.reloadData() self.clipRatioColView.scrollToItem(at: indexPath, at: .centeredHorizontally, animated: true) self.calculateClipRect() self.layoutInitialImage() } } extension ZLClipImageViewController: UIScrollViewDelegate { func viewForZooming(in scrollView: UIScrollView) -> UIView? { return self.containerView } func scrollViewWillBeginZooming(_ scrollView: UIScrollView, with view: UIView?) { self.startEditing() } func scrollViewWillBeginDragging(_ scrollView: UIScrollView) { guard scrollView == self.scrollView else { return } self.startEditing() } func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) { guard scrollView == self.scrollView else { return } self.startTimer() } func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) { guard scrollView == self.scrollView else { return } if !decelerate { self.startTimer() } } } extension ZLClipImageViewController: UIViewControllerTransitioningDelegate { func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? { return ZLClipImageDismissAnimatedTransition() } } // MARK: 裁剪比例cell class ZLImageClipRatioCell: UICollectionViewCell { var imageView: UIImageView! var titleLabel: UILabel! var image: UIImage? var ratio: ZLImageClipRatio! override init(frame: CGRect) { super.init(frame: frame) self.setupUI() } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func layoutSubviews() { super.layoutSubviews() guard let ratio = self.ratio, let image = self.image else { return } let center = self.imageView.center var w: CGFloat = 0, h: CGFloat = 0 let imageMaxW = self.bounds.width-10 if ratio.whRatio == 0 { let maxSide = max(image.size.width, image.size.height) w = imageMaxW * image.size.width / maxSide h = imageMaxW * image.size.height / maxSide } else { if ratio.whRatio >= 1 { w = imageMaxW h = w / ratio.whRatio } else { h = imageMaxW w = h * ratio.whRatio } } self.imageView.frame = CGRect(x: center.x-w/2, y: center.y-h/2, width: w, height: h) } func setupUI() { self.imageView = UIImageView(frame: CGRect(x: 8, y: 5, width: self.bounds.width-16, height: self.bounds.width-16)) self.imageView.contentMode = .scaleAspectFill self.imageView.layer.cornerRadius = 3 self.imageView.layer.masksToBounds = true self.imageView.clipsToBounds = true self.contentView.addSubview(self.imageView) self.titleLabel = UILabel(frame: CGRect(x: 0, y: self.bounds.height-15, width: self.bounds.width, height: 12)) self.titleLabel.font = getFont(12) self.titleLabel.textColor = .white self.titleLabel.textAlignment = .center self.titleLabel.layer.shadowColor = UIColor.black.withAlphaComponent(0.3).cgColor self.titleLabel.layer.shadowOffset = .zero self.titleLabel.layer.shadowOpacity = 1 self.contentView.addSubview(self.titleLabel) } func configureCell(image: UIImage, ratio: ZLImageClipRatio) { self.imageView.image = image self.titleLabel.text = ratio.title self.image = image self.ratio = ratio self.setNeedsLayout() } } class ZLClipShadowView: UIView { var clearRect: CGRect = .zero { didSet { self.setNeedsDisplay() } } override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = .clear self.isOpaque = false } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func draw(_ rect: CGRect) { UIColor(white: 0, alpha: 0.7).setFill() UIRectFill(rect) let cr = self.clearRect.intersection(rect) UIColor.clear.setFill() UIRectFill(cr) } } // MARK: 裁剪网格视图 class ZLClipOverlayView: UIView { static let cornerLineWidth: CGFloat = 3 var cornerBoldLines: [UIView] = [] var velLines: [UIView] = [] var horLines: [UIView] = [] override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = .clear self.clipsToBounds = false // 两种方法实现裁剪框，drawrect动画效果 更好一点 // func line(_ isCorner: Bool) -> UIView { // let line = UIView() // line.backgroundColor = .white // line.layer.shadowColor = UIColor.black.cgColor // if !isCorner { // line.layer.shadowOffset = .zero // line.layer.shadowRadius = 1.5 // line.layer.shadowOpacity = 0.8 // } // self.addSubview(line) // return line // } // // (0..<8).forEach { (_) in // self.cornerBoldLines.append(line(true)) // } // // (0..<4).forEach { (_) in // self.velLines.append(line(false)) // self.horLines.append(line(false)) // } } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func layoutSubviews() { super.layoutSubviews() self.setNeedsDisplay() // let borderLineLength: CGFloat = 20 // let borderLineWidth: CGFloat = ZLClipOverlayView.cornerLineWidth // for (i, line) in self.cornerBoldLines.enumerated() { // switch i { // case 0: // // 左上 hor // line.frame = CGRect(x: -borderLineWidth, y: -borderLineWidth, width: borderLineLength, height: borderLineWidth) // case 1: // // 左上 vel // line.frame = CGRect(x: -borderLineWidth, y: -borderLineWidth, width: borderLineWidth, height: borderLineLength) // case 2: // // 右上 hor // line.frame = CGRect(x: self.bounds.width-borderLineLength+borderLineWidth, y: -borderLineWidth, width: borderLineLength, height: borderLineWidth) // case 3: // // 右上 vel // line.frame = CGRect(x: self.bounds.width, y: -borderLineWidth, width: borderLineWidth, height: borderLineLength) // case 4: // // 左下 hor // line.frame = CGRect(x: -borderLineWidth, y: self.bounds.height, width: borderLineLength, height: borderLineWidth) // case 5: // // 左下 vel // line.frame = CGRect(x: -borderLineWidth, y: self.bounds.height-borderLineLength+borderLineWidth, width: borderLineWidth, height: borderLineLength) // case 6: // // 右下 hor // line.frame = CGRect(x: self.bounds.width-borderLineLength+borderLineWidth, y: self.bounds.height, width: borderLineLength, height: borderLineWidth) // case 7: // line.frame = CGRect(x: self.bounds.width, y: self.bounds.height-borderLineLength+borderLineWidth, width: borderLineWidth, height: borderLineLength) // // default: // break // } // } // // let normalLineWidth: CGFloat = 1 // var x: CGFloat = 0 // var y: CGFloat = -1 // // 横线 // for (index, line) in self.horLines.enumerated() { // if index == 0 || index == 3 { // x = borderLineLength-borderLineWidth // } else { // x = 0 // } // line.frame = CGRect(x: x, y: y, width: self.bounds.width - x * 2, height: normalLineWidth) // y += (self.bounds.height + 1) / 3 // } // // x = -1 // y = 0 // // 竖线 // for (index, line) in self.velLines.enumerated() { // if index == 0 || index == 3 { // y = borderLineLength-borderLineWidth // } else { // y = 0 // } // line.frame = CGRect(x: x, y: y, width: normalLineWidth, height: self.bounds.height - y * 2) // x += (self.bounds.width + 1) / 3 // } } override func draw(_ rect: CGRect) { let context = UIGraphicsGetCurrentContext() context?.setFillColor(UIColor.clear.cgColor) context?.setStrokeColor(UIColor.white.cgColor) context?.setLineWidth(1) context?.beginPath() var dw: CGFloat = 3 for _ in 0..<4 { context?.move(to: CGPoint(x: rect.origin.x+dw, y: rect.origin.y+3)) context?.addLine(to: CGPoint(x: rect.origin.x+dw, y: rect.origin.y+rect.height-3)) dw += (rect.size.width - 6) / 3 } var dh: CGFloat = 3 for _ in 0..<4 { context?.move(to: CGPoint(x: rect.origin.x+3, y: rect.origin.y+dh)) context?.addLine(to: CGPoint(x: rect.origin.x+rect.width-3, y: rect.origin.y+dh)) dh += (rect.size.height - 6) / 3 } context?.strokePath() context?.setLineWidth(3) let boldLineLength: CGFloat = 20 // 左上 context?.move(to: CGPoint(x: 0, y: 1.5)) context?.addLine(to: CGPoint(x: boldLineLength, y: 1.5)) context?.move(to: CGPoint(x: 1.5, y: 0)) context?.addLine(to: CGPoint(x: 1.5, y: boldLineLength)) // 右上 context?.move(to: CGPoint(x: rect.width-boldLineLength, y: 1.5)) context?.addLine(to: CGPoint(x: rect.width, y: 1.5)) context?.move(to: CGPoint(x: rect.width-1.5, y: 0)) context?.addLine(to: CGPoint(x: rect.width-1.5, y: boldLineLength)) // 左下 context?.move(to: CGPoint(x: 1.5, y: rect.height-boldLineLength)) context?.addLine(to: CGPoint(x: 1.5, y: rect.height)) context?.move(to: CGPoint(x: 0, y: rect.height-1.5)) context?.addLine(to: CGPoint(x: boldLineLength, y: rect.height-1.5)) // 右下 context?.move(to: CGPoint(x: rect.width-boldLineLength, y: rect.height-1.5)) context?.addLine(to: CGPoint(x: rect.width, y: rect.height-1.5)) context?.move(to: CGPoint(x: rect.width-1.5, y: rect.height-boldLineLength)) context?.addLine(to: CGPoint(x: rect.width-1.5, y: rect.height)) context?.strokePath() context?.setShadow(offset: CGSize(width: 1, height: 1), blur: 0) } }