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Add ZLEnlargeButton class instead of extending UIControl to enlarge b…
…utton click area
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,8 +1,8 @@ | ||
| // | ||
| // UIControl+ZLPhotoBrowser.swift | ||
| // ZLEnlargeButton.swift | ||
| // ZLPhotoBrowser | ||
| // | ||
| // Created by long on 2020/8/17. | ||
| // Created by long on 2022/4/24. | ||
| // | ||
| // Copyright (c) 2020 Long Zhang <[email protected]> | ||
| // | ||
|
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@@ -26,55 +26,43 @@ | |
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| import UIKit | ||
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| private var edgeKey = "edgeKey" | ||
| public class ZLEnlargeButton: UIButton { | ||
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| extension UIControl { | ||
| /// 扩大点击区域 | ||
| public var enlargeInsets: UIEdgeInsets = .zero | ||
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| private var zl_insets: UIEdgeInsets? { | ||
| get { | ||
| if let temp = objc_getAssociatedObject(self, &edgeKey) as? UIEdgeInsets { | ||
| return temp | ||
| } | ||
| return nil | ||
| } | ||
| set { | ||
| objc_setAssociatedObject(self, &edgeKey, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) | ||
| /// 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) | ||
| } | ||
| } | ||
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| open override func point(inside point: CGPoint, with event: UIEvent?) -> Bool { | ||
| guard !self.isHidden && self.alpha != 0 else { | ||
| public override func point(inside point: CGPoint, with event: UIEvent?) -> Bool { | ||
| guard !isHidden && alpha != 0 else { | ||
| return false | ||
| } | ||
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| let rect = self.enlargeRect() | ||
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| if rect.equalTo(self.bounds) { | ||
| let rect = enlargeRect() | ||
| if rect.equalTo(bounds) { | ||
| return super.point(inside: point, with: event) | ||
| } | ||
| return rect.contains(point) ? true : false | ||
| } | ||
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| private func enlargeRect() -> CGRect { | ||
| guard let edge = self.zl_insets else { | ||
| return self.bounds | ||
| guard enlargeInsets != .zero else { | ||
| return bounds | ||
| } | ||
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| let rect = CGRect(x: self.bounds.minX - edge.left, y: self.bounds.minY - edge.top, width: self.bounds.width + edge.left + edge.right, height: self.bounds.height + edge.top + edge.bottom) | ||
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| 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 | ||
| } | ||
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| func zl_enlargeValidTouchArea(insets: UIEdgeInsets) { | ||
| self.zl_insets = insets | ||
| } | ||
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| func zl_enlargeValidTouchArea(inset: CGFloat) { | ||
| guard inset != 0 else { | ||
| return | ||
| } | ||
| self.zl_insets = UIEdgeInsets(top: inset, left: inset, bottom: inset, right: inset) | ||
| } | ||
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| } | ||
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