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Pods/ZLPhotoBrowser/Sources/Edit/ZLImageStickerView.swift

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+//
+//  ZLImageStickerView.swift
+//  ZLPhotoBrowser
+//
+//  Created by long on 2020/11/20.
+//
+//  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
+
+class ZLImageStickerView: ZLBaseStickerView<ZLImageStickerState> {
+    private let image: UIImage
+    
+    private static let edgeInset: CGFloat = 20
+    
+    private lazy var imageView: UIImageView = {
+        let view = UIImageView(image: image)
+        view.contentMode = .scaleAspectFit
+        view.clipsToBounds = true
+        return view
+    }()
+    
+    // Convert all states to model.
+    override var state: ZLImageStickerState {
+        return ZLImageStickerState(
+            image: image,
+            originScale: originScale,
+            originAngle: originAngle,
+            originFrame: originFrame,
+            gesScale: gesScale,
+            gesRotation: gesRotation,
+            totalTranslationPoint: totalTranslationPoint
+        )
+    }
+    
+    deinit {
+        zl_debugPrint("ZLImageStickerView deinit")
+    }
+    
+    convenience init(state: ZLImageStickerState) {
+        self.init(
+            image: state.image,
+            originScale: state.originScale,
+            originAngle: state.originAngle,
+            originFrame: state.originFrame,
+            gesScale: state.gesScale,
+            gesRotation: state.gesRotation,
+            totalTranslationPoint: state.totalTranslationPoint,
+            showBorder: false
+        )
+    }
+    
+    init(
+        image: UIImage,
+        originScale: CGFloat,
+        originAngle: CGFloat,
+        originFrame: CGRect,
+        gesScale: CGFloat = 1,
+        gesRotation: CGFloat = 0,
+        totalTranslationPoint: CGPoint = .zero,
+        showBorder: Bool = true
+    ) {
+        self.image = image
+        super.init(originScale: originScale, originAngle: originAngle, originFrame: originFrame, gesScale: gesScale, gesRotation: gesRotation, totalTranslationPoint: totalTranslationPoint, showBorder: showBorder)
+        
+        borderView.addSubview(imageView)
+    }
+    
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func setupUIFrameWhenFirstLayout() {
+        imageView.frame = bounds.insetBy(dx: Self.edgeInset, dy: Self.edgeInset)
+    }
+    
+    class func calculateSize(image: UIImage, width: CGFloat) -> CGSize {
+        let maxSide = width / 2
+        let minSide: CGFloat = 100
+        let whRatio = image.size.width / image.size.height
+        var size: CGSize = .zero
+        if whRatio >= 1 {
+            let w = min(maxSide, max(minSide, image.size.width))
+            let h = w / whRatio
+            size = CGSize(width: w, height: h)
+        } else {
+            let h = min(maxSide, max(minSide, image.size.width))
+            let w = h * whRatio
+            size = CGSize(width: w, height: h)
+        }
+        size.width += Self.edgeInset * 2
+        size.height += Self.edgeInset * 2
+        return size
+    }
+}
+
+public class ZLImageStickerState: NSObject {
+    let image: UIImage
+    let originScale: CGFloat
+    let originAngle: CGFloat
+    let originFrame: CGRect
+    let gesScale: CGFloat
+    let gesRotation: CGFloat
+    let totalTranslationPoint: CGPoint
+    
+    init(
+        image: UIImage,
+        originScale: CGFloat,
+        originAngle: CGFloat,
+        originFrame: CGRect,
+        gesScale: CGFloat,
+        gesRotation: CGFloat,
+        totalTranslationPoint: CGPoint
+    ) {
+        self.image = image
+        self.originScale = originScale
+        self.originAngle = originAngle
+        self.originFrame = originFrame
+        self.gesScale = gesScale
+        self.gesRotation = gesRotation
+        self.totalTranslationPoint = totalTranslationPoint
+        super.init()
+    }
+}