RKAutoLayout/Sources/SafeAreaCompatibility.swift at master · DaskiOFF/RKAutoLayout · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
import UIKit

public extension UIView {
    // MARK: - SafeArea
    /// Return
    /// - safeAreaLayoutGuide for >= iOS 11
    /// - layoutMarginsGuide for < iOS 11
    @available (iOS 9, *)
    public var rkSafeAreaLayoutGuide: UILayoutGuide {
        if #available(iOS 11.0, *) {
            return safeAreaLayoutGuide
        } else {
            return layoutMarginsGuide
        }
    }

    /// Return
    /// - safeAreaInsets for >= iOS 11
    /// - UIEdgeInsets(top: x, left: 0, bottom: y, right: 0) for < iOS 11
    ///
    /// where:
    /// - x – maxY for NavigationBar or maxY for StatusBar
    /// - y – minY for TabBar
    @available (iOS 8, *)
    public var rkSafeAreaInsets: UIEdgeInsets {
        if #available(iOS 11.0, *) {
            return safeAreaInsets
        } else {
            var topInset: CGFloat = 0
            var bottomInset: CGFloat = 0

            if !UIApplication.shared.isStatusBarHidden {
                topInset = UIApplication.shared.statusBarFrame.height
            }

            if let topVC = UIApplication.shared.topViewController {
                if let nc = topVC.navigationController, !nc.isNavigationBarHidden && nc.navigationBar.isTranslucent {
                    topInset += nc.navigationBar.frame.height
                }
                if let tc = topVC.tabBarController, !tc.tabBar.isHidden && tc.tabBar.isTranslucent {
                    bottomInset += tc.tabBar.frame.height
                }
            }

            return UIEdgeInsets(top: topInset, left: 0, bottom: bottomInset, right: 0)
        }
    }
}

@available (iOS 9, *)
public extension UIViewController {
    // MARK: - SafeArea
    /// Return
    /// - safeAreaLayoutGuide.topAnchor for >= iOS 11
    /// - topLayoutGuide.bottomAnchor for < iOS 11
    public var rkTopAnchor: NSLayoutYAxisAnchor {
        if #available(iOS 11, *) {
            return view.rkSafeAreaLayoutGuide.topAnchor
        } else {
            return topLayoutGuide.bottomAnchor
        }
    }

    /// Return view.rkSafeAreaLayoutGuide.leftAnchor
    public var rkLeftAnchor: NSLayoutXAxisAnchor {
        return view.rkSafeAreaLayoutGuide.leftAnchor
    }

    /// Return
    /// - safeAreaLayoutGuide.bottomAnchor for >= iOS 11
    /// - bottomLayoutGuide.topAnchor for < iOS 11
    public var rkBottomAnchor: NSLayoutYAxisAnchor {
        if #available(iOS 11, *) {
            return view.rkSafeAreaLayoutGuide.bottomAnchor
        } else {
            return bottomLayoutGuide.topAnchor
        }
    }

    /// Return view.rkSafeAreaLayoutGuide.rightAnchor
    public var rkRightAnchor: NSLayoutXAxisAnchor {
        return view.rkSafeAreaLayoutGuide.rightAnchor
    }

    /// Return view.rkSafeAreaLayoutGuide.leadingAnchor
    public var rkLeadingAnchor: NSLayoutXAxisAnchor {
        return view.rkSafeAreaLayoutGuide.leadingAnchor
    }

    /// Return view.rkSafeAreaLayoutGuide.trailingAnchor
    public var rkTrailingAnchor: NSLayoutXAxisAnchor {
        return view.rkSafeAreaLayoutGuide.trailingAnchor
    }
}