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Pods/ZLPhotoBrowser/Sources/General/ZLEnlargeButton.swift

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+//
+//  ZLEnlargeButton.swift
+//  ZLPhotoBrowser
+//
+//  Created by long on 2022/4/24.
+//
+//  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
+
+public class ZLEnlargeButton: UIButton {
+    
+    /// 扩大点击区域
+    public var enlargeInsets: UIEdgeInsets = .zero
+    
+    /// 上下左右均扩大该值的点击范围
+    public var enlargeInset: CGFloat = 0 {
+        didSet {
+            let inset = max(0, enlargeInset)
+            enlargeInsets = UIEdgeInsets(top: inset, left: inset, bottom: inset, right: inset)
+        }
+    }
+    
+    override public func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
+        guard !isHidden, alpha != 0 else {
+            return false
+        }
+        
+        let rect = enlargeRect()
+        if rect.equalTo(bounds) {
+            return super.point(inside: point, with: event)
+        }
+        return rect.contains(point) ? true : false
+    }
+    
+    private func enlargeRect() -> CGRect {
+        guard enlargeInsets != .zero else {
+            return bounds
+        }
+        
+        let rect = CGRect(
+            x: bounds.minX - enlargeInsets.left,
+            y: bounds.minY - enlargeInsets.top,
+            width: bounds.width + enlargeInsets.left + enlargeInsets.right,
+            height: bounds.height + enlargeInsets.top + enlargeInsets.bottom
+        )
+        return rect
+    }
+    
+}