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session-ios/SignalMessaging/Views/OWSNavigationBar.swift

96 lines
3.3 KiB
Swift

//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
import Foundation
import UIKit
@objc
protocol NavBarLayoutDelegate: class {
func navBarCallLayoutDidChange(navbar: OWSNavigationBar)
}
@objc
class OWSNavigationBar: UINavigationBar {
weak var navBarLayoutDelegate: NavBarLayoutDelegate?
// TODO - get a more precise value
// TODO - test with other heights, e.g. w/ hotspot, w/ call in other app
let navbarWithoutStatusHeight: CGFloat = 44
let callBannerHeight: CGFloat = 40
// MJK safe to hardcode? Do we even need this approach anymore?
var statusBarHeight: CGFloat {
// TODO? plumb through CurrentAppContext()
return 20
}
override init(frame: CGRect) {
super.init(frame: frame)
self.isTranslucent = false
NotificationCenter.default.addObserver(self, selector: #selector(callDidChange), name: .OWSWindowManagerCallDidChange, object: nil)
}
@objc
public func callDidChange() {
Logger.debug("\(self.logTag) in \(#function)")
self.navBarLayoutDelegate?.navBarCallLayoutDidChange(navbar: self)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
guard OWSWindowManager.shared().hasCall() else {
return super.sizeThatFits(size)
}
if #available(iOS 11, *) {
return super.sizeThatFits(size)
} else {
// pre iOS11, sizeThatFits is repeatedly called to determine how much space to reserve for that navbar.
// That is, increasing this causes the child view controller to be pushed down.
// (as of iOS11, this is not used and instead we use additionalSafeAreaInsets)
let result = CGSize(width: CurrentAppContext().mainWindow!.bounds.width, height: navbarWithoutStatusHeight + statusBarHeight)
Logger.debug("\(self.logTag) in \(#function): \(result)")
return result
}
}
override func layoutSubviews() {
Logger.debug("\(self.logTag) in \(#function)")
guard OWSWindowManager.shared().hasCall() else {
super.layoutSubviews()
return
}
// let rect = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: self.navbarHeightWithoutStatusBar)
// self.frame = CGRect(x: 0, y: 20, width: UI Screen.main.bounds.width, height: ios11NavbarHeight)
self.frame = CGRect(x: 0, y: callBannerHeight, width: UIScreen.main.bounds.width, height: navbarWithoutStatusHeight)
self.bounds = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: navbarWithoutStatusHeight)
super.layoutSubviews()
guard #available(iOS 11, *) else {
return
}
// This is only necessary on iOS11, which has some private views within the navbar
for subview in self.subviews {
let stringFromClass = NSStringFromClass(subview.classForCoder)
if stringFromClass.contains("BarBackground") {
subview.frame = self.bounds//.offsetBy(dx: 0, dy: 20)
} else if stringFromClass.contains("BarContentView") {
subview.frame = self.bounds//.offsetBy(dx: 0, dy: 20)
}
}
}
}