Signal-iOS/Signal/Calls/UserInterface/GroupCallViewController.swift

1222 lines
50 KiB
Swift

//
// Copyright 2020 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
//
import Foundation
import SignalServiceKit
import SignalRingRTC
import SignalUI
// TODO: Eventually add 1:1 call support to this view
// and replace CallViewController
class GroupCallViewController: UIViewController {
private let call: SignalCall
private var groupCall: GroupCall { call.groupCall }
private lazy var callControlsConfirmationToastManager = CallControlsConfirmationToastManager(
presentingContainerView: callControlsConfirmationToastContainerView
)
private lazy var callControls = CallControls(
call: call,
callService: callService,
confirmationToastManager: callControlsConfirmationToastManager,
delegate: self
)
private lazy var callControlsConfirmationToastContainerView = UIView()
private lazy var incomingCallControls = IncomingCallControls(video: true, delegate: self)
private var incomingCallControlsConstraint: NSLayoutConstraint?
private lazy var noVideoIndicatorView: UIStackView = createNoVideoIndicatorView()
private lazy var callHeader = CallHeader(call: call, delegate: self)
private lazy var notificationView = GroupCallNotificationView(call: call)
private lazy var videoGrid = GroupCallVideoGrid(call: call)
private lazy var videoOverflow = GroupCallVideoOverflow(call: call, delegate: self)
private let localMemberView: CallMemberView_GroupBridge
private let speakerView: CallMemberView_GroupBridge
private var didUserEverSwipeToSpeakerView = true
private var didUserEverSwipeToScreenShare = true
private let swipeToastView = GroupCallSwipeToastView()
private var speakerPage = UIView()
private let scrollView = UIScrollView()
private let incomingReactionsView = IncomingReactionsView()
private var isCallMinimized = false {
didSet { speakerView.isCallMinimized = isCallMinimized }
}
private var isAutoScrollingToScreenShare = false
private var isAnyRemoteDeviceScreenSharing = false {
didSet {
guard oldValue != isAnyRemoteDeviceScreenSharing else { return }
// Scroll to speaker view when presenting begins.
if isAnyRemoteDeviceScreenSharing {
isAutoScrollingToScreenShare = true
scrollView.setContentOffset(CGPoint(x: 0, y: speakerPage.frame.origin.y), animated: true)
}
}
}
lazy var tapGesture = UITapGestureRecognizer(target: self, action: #selector(didTouchRootView))
lazy var videoOverflowTopConstraint = videoOverflow.autoPinEdge(toSuperviewEdge: .top)
lazy var videoOverflowTrailingConstraint = videoOverflow.autoPinEdge(toSuperviewEdge: .trailing)
var shouldRemoteVideoControlsBeHidden = false {
didSet { updateCallUI() }
}
var hasUnresolvedSafetyNumberMismatch = false
var hasDismissed = false
private var membersAtJoin: Set<SignalServiceAddress>?
private static let keyValueStore = SDSKeyValueStore(collection: "GroupCallViewController")
private static let didUserSwipeToSpeakerViewKey = "didUserSwipeToSpeakerView"
private static let didUserSwipeToScreenShareKey = "didUserSwipeToScreenShare"
/// When the local member view (which is displayed picture-in-picture) is
/// tapped, it expands. If the frame is expanded, its enlarged frame is
/// stored here. If the pip is not in the expanded state, this value is nil.
private var expandedPipFrame: CGRect?
/// Whether the local member view pip has an animation currently in progress.
private var isPipAnimationInProgress = false
/// Whether a relayout needs to occur after the pip animation completes.
/// This is true when we suspended an attempted relayout triggered during
/// the pip animation.
private var shouldRelayoutAfterPipAnimationCompletes = false
private var postAnimationUpdateMemberViewFramesSize: CGSize?
private var postAnimationUpdateMemberViewFramesControlsAreHidden: Bool?
init(call: SignalCall) {
// TODO: Eventually unify UI for group and individual calls
owsAssertDebug(call.isGroupCall)
if FeatureFlags.useCallMemberComposableViewsForRemoteUsersInGroupCalls {
let type = CallMemberView.MemberType.remoteInGroup(.speaker)
speakerView = CallMemberView(type: type)
} else {
speakerView = GroupCallRemoteMemberView(context: .speaker)
}
if FeatureFlags.useCallMemberComposableViewsForLocalUser {
let type = CallMemberView.MemberType.local
localMemberView = CallMemberView(type: type)
} else {
localMemberView = GroupCallLocalMemberView()
}
self.call = call
super.init(nibName: nil, bundle: nil)
if let callMemberView = self.localMemberView as? CallMemberView {
callMemberView.animatableLocalMemberViewDelegate = self
}
if let callMemberView = self.localMemberView as? CallMemberView {
callMemberView.animatableLocalMemberViewDelegate = self
}
if let callMemberView = self.localMemberView as? CallMemberView {
callMemberView.animatableLocalMemberViewDelegate = self
}
call.addObserverAndSyncState(observer: self)
videoGrid.memberViewErrorPresenter = self
videoOverflow.memberViewErrorPresenter = self
speakerView.errorPresenter = self
localMemberView.errorPresenter = self
SDSDatabaseStorage.shared.asyncRead { readTx in
self.didUserEverSwipeToSpeakerView = Self.keyValueStore.getBool(
Self.didUserSwipeToSpeakerViewKey,
defaultValue: false,
transaction: readTx
)
self.didUserEverSwipeToScreenShare = Self.keyValueStore.getBool(
Self.didUserSwipeToScreenShareKey,
defaultValue: false,
transaction: readTx
)
} completion: {
self.updateSwipeToastView()
}
NotificationCenter.default.addObserver(self,
selector: #selector(didBecomeActive),
name: UIApplication.didBecomeActiveNotification,
object: nil)
}
@discardableResult
class func presentLobby(thread: TSGroupThread, videoMuted: Bool = false) -> Bool {
guard DependenciesBridge.shared.tsAccountManager.registrationStateWithMaybeSneakyTransaction.isRegistered else {
Logger.warn("aborting due to user not being onboarded.")
OWSActionSheets.showActionSheet(title: OWSLocalizedString(
"YOU_MUST_COMPLETE_ONBOARDING_BEFORE_PROCEEDING",
comment: "alert body shown when trying to use features in the app before completing registration-related setup."
))
return false
}
guard let frontmostViewController = UIApplication.shared.frontmostViewController else {
owsFailDebug("could not identify frontmostViewController")
return false
}
frontmostViewController.ows_askForMicrophonePermissions { granted in
guard granted == true else {
Logger.warn("aborting due to missing microphone permissions.")
frontmostViewController.ows_showNoMicrophonePermissionActionSheet()
return
}
guard let groupCall = Self.callService.buildAndConnectGroupCallIfPossible(
thread: thread, videoMuted: videoMuted
) else {
return owsFailDebug("Failed to build group call")
}
let completion = {
// Dismiss the group call tooltip
self.preferences.setWasGroupCallTooltipShown()
let vc = GroupCallViewController(call: groupCall)
vc.modalTransitionStyle = .crossDissolve
WindowManager.shared.startCall(viewController: vc)
}
if videoMuted {
completion()
} else {
frontmostViewController.ows_askForCameraPermissions { granted in
guard granted else {
Logger.warn("aborting due to missing camera permissions.")
return
}
completion()
}
}
}
return true
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func loadView() {
view = UIView()
view.clipsToBounds = true
view.backgroundColor = .ows_black
scrollView.delegate = self
view.addSubview(scrollView)
scrollView.isPagingEnabled = true
scrollView.showsVerticalScrollIndicator = false
scrollView.contentInsetAdjustmentBehavior = .never
scrollView.alwaysBounceVertical = false
scrollView.autoPinEdgesToSuperviewEdges()
view.addSubview(callHeader)
callHeader.autoPinWidthToSuperview()
callHeader.autoPinEdge(toSuperviewEdge: .top)
view.addSubview(noVideoIndicatorView)
noVideoIndicatorView.autoHCenterInSuperview()
// Be flexible on the vertical centering on a cramped screen.
NSLayoutConstraint.autoSetPriority(.defaultLow) {
noVideoIndicatorView.autoVCenterInSuperview()
}
noVideoIndicatorView.autoPinEdge(.top, to: .bottom, of: callHeader, withOffset: 8, relation: .greaterThanOrEqual)
view.addSubview(notificationView)
notificationView.autoPinEdgesToSuperviewEdges()
view.addSubview(callControls)
callControls.autoPinWidthToSuperview()
callControls.autoPinEdge(toSuperviewEdge: .bottom)
callControls.autoPinEdge(.top, to: .bottom, of: noVideoIndicatorView, withOffset: 8, relation: .greaterThanOrEqual)
view.addSubview(incomingCallControls)
incomingCallControls.autoPinWidthToSuperview()
incomingCallControls.autoPinEdge(toSuperviewEdge: .bottom)
// Save this constraint for manual activation/deactivation,
// so we don't push the noVideoIndicatorView out of center if we aren't showing the incoming controls.
incomingCallControlsConstraint = incomingCallControls.autoPinEdge(
.top, to: .bottom, of: noVideoIndicatorView, withOffset: 8, relation: .greaterThanOrEqual)
view.addSubview(videoOverflow)
videoOverflow.autoPinEdge(toSuperviewEdge: .leading)
scrollView.addSubview(videoGrid)
scrollView.addSubview(speakerPage)
if FeatureFlags.callReactionReceiveSupport {
view.addSubview(incomingReactionsView)
incomingReactionsView.autoPinEdge(.leading, to: .leading, of: view, withOffset: 22)
incomingReactionsView.autoPinEdge(.bottom, to: .top, of: videoOverflow, withOffset: -25)
incomingReactionsView.widthAnchor.constraint(equalToConstant: IncomingReactionsView.Constants.viewWidth).isActive = true
incomingReactionsView.heightAnchor.constraint(equalToConstant: IncomingReactionsView.viewHeight).isActive = true
}
scrollView.addSubview(swipeToastView)
swipeToastView.autoPinEdge(.bottom, to: .bottom, of: videoGrid, withOffset: -22)
swipeToastView.autoHCenterInSuperview()
swipeToastView.autoPinEdge(toSuperviewMargin: .leading, relation: .greaterThanOrEqual)
swipeToastView.autoPinEdge(toSuperviewMargin: .trailing, relation: .greaterThanOrEqual)
// Confirmation toasts should sit on top of the `localMemberView` and `videoOverflow`,
// so this `addSubview` should remain towards the end of the setup.
//
// TODO: The call controls '...' overflow menu (which will include reactions and raise hand
// options) will sit on top of these toasts.
view.addSubview(callControlsConfirmationToastContainerView)
callControlsConfirmationToastContainerView.autoPinEdge(.bottom, to: .top, of: callControls, withOffset: -30)
callControlsConfirmationToastContainerView.autoHCenterInSuperview()
view.addGestureRecognizer(tapGesture)
updateCallUI()
}
private func createNoVideoIndicatorView() -> UIStackView {
let icon = UIImageView()
icon.contentMode = .scaleAspectFit
icon.setTemplateImageName("video-slash-fill-28", tintColor: .ows_white)
let label = UILabel()
label.font = .dynamicTypeCaption1
label.text = OWSLocalizedString("CALLING_MEMBER_VIEW_YOUR_CAMERA_IS_OFF",
comment: "Indicates to the user that their camera is currently off.")
label.textAlignment = .center
label.textColor = Theme.darkThemePrimaryColor
let container = UIStackView(arrangedSubviews: [icon, label])
if UIDevice.current.isIPhone5OrShorter {
// Use a horizontal layout to save on vertical space.
// Allow the icon to shrink below its natural size of 28pt...
icon.setContentCompressionResistancePriority(.defaultLow, for: .vertical)
container.axis = .horizontal
container.spacing = 4
// ...by always matching the label's height.
container.alignment = .fill
} else {
// Use a simple vertical layout.
icon.autoSetDimensions(to: CGSize(square: 28))
container.axis = .vertical
container.spacing = 10
container.alignment = .center
label.autoPinWidthToSuperview()
}
return container
}
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
super.viewWillTransition(to: size, with: coordinator)
let wasOnSpeakerPage = scrollView.contentOffset.y >= view.height
coordinator.animate(alongsideTransition: { _ in
self.updateCallUI(size: size)
self.videoGrid.reloadData()
self.videoOverflow.reloadData()
self.scrollView.contentOffset = wasOnSpeakerPage ? CGPoint(x: 0, y: size.height) : .zero
}, completion: nil)
}
private var hasAppeared = false
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
guard !hasAppeared else { return }
hasAppeared = true
callService.sendInitialPhoneOrientationNotification()
if let splitViewSnapshot = SignalApp.shared.snapshotSplitViewController(afterScreenUpdates: false) {
view.superview?.insertSubview(splitViewSnapshot, belowSubview: view)
splitViewSnapshot.autoPinEdgesToSuperviewEdges()
view.transform = .scale(1.5)
view.alpha = 0
UIView.animate(withDuration: 0.2, animations: {
self.view.alpha = 1
self.view.transform = .identity
}) { _ in
splitViewSnapshot.removeFromSuperview()
}
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
if hasUnresolvedSafetyNumberMismatch && CurrentAppContext().isAppForegroundAndActive() {
// If we're not active yet, this will be handled by the `didBecomeActive` callback.
resolveSafetyNumberMismatch()
}
}
@objc
private func didBecomeActive() {
if hasUnresolvedSafetyNumberMismatch {
resolveSafetyNumberMismatch()
}
}
private var hasOverflowMembers: Bool { videoGrid.maxItems < groupCall.remoteDeviceStates.count }
private func updateScrollViewFrames(size: CGSize? = nil, controlsAreHidden: Bool) {
view.layoutIfNeeded()
let size = size ?? view.frame.size
if groupCall.remoteDeviceStates.count < 2 || groupCall.localDeviceState.joinState != .joined {
videoGrid.frame = .zero
videoGrid.isHidden = true
speakerPage.frame = CGRect(
x: 0,
y: 0,
width: size.width,
height: size.height
)
scrollView.contentSize = size
scrollView.contentOffset = .zero
scrollView.isScrollEnabled = false
} else {
let wasVideoGridHidden = videoGrid.isHidden
scrollView.isScrollEnabled = true
videoGrid.isHidden = false
videoGrid.frame = CGRect(
x: 0,
y: view.safeAreaInsets.top,
width: size.width,
height: size.height - view.safeAreaInsets.top - (controlsAreHidden ? 16 : callControls.height) - (hasOverflowMembers ? videoOverflow.height + 32 : 0)
)
speakerPage.frame = CGRect(
x: 0,
y: size.height,
width: size.width,
height: size.height
)
scrollView.contentSize = CGSize(width: size.width, height: size.height * 2)
if wasVideoGridHidden {
scrollView.contentOffset = .zero
}
}
}
func updateVideoOverflowTrailingConstraint() {
var trailingConstraintConstant = -(GroupCallVideoOverflow.itemHeight * ReturnToCallViewController.inherentPipSize.aspectRatio + 4)
if view.width + trailingConstraintConstant > videoOverflow.contentSize.width {
trailingConstraintConstant += 16
}
videoOverflowTrailingConstraint.constant = trailingConstraintConstant
view.layoutIfNeeded()
}
private func updateMemberViewFrames(size: CGSize? = nil, controlsAreHidden: Bool) {
guard !isPipAnimationInProgress else {
// Wait for the pip to reach its new size before re-laying out.
// Otherwise the pip snaps back to its size at the start of the
// animation, effectively undoing it. When the animation is
// complete, we'll call `updateMemberViewFrames`.
self.shouldRelayoutAfterPipAnimationCompletes = true
self.postAnimationUpdateMemberViewFramesSize = size
self.postAnimationUpdateMemberViewFramesControlsAreHidden = controlsAreHidden
return
}
view.layoutIfNeeded()
let size = size ?? view.frame.size
let yMax = (controlsAreHidden ? size.height - 16 : callControls.frame.minY) - 16
videoOverflowTopConstraint.constant = yMax - videoOverflow.height
updateVideoOverflowTrailingConstraint()
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
view.removeFromSuperview()
}
speakerView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
view.removeFromSuperview()
}
switch groupCall.localDeviceState.joinState {
case .joined:
if groupCall.remoteDeviceStates.count > 0 {
speakerView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: true) { view in
speakerPage.addSubview(view)
view.autoPinEdgesToSuperviewEdges()
}
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: true) { aView in
view.insertSubview(aView, belowSubview: callControlsConfirmationToastContainerView)
}
let pipSize = CallMemberView.pipSize(
expandedPipFrame: self.expandedPipFrame,
remoteDeviceCount: groupCall.remoteDeviceStates.count
)
if groupCall.remoteDeviceStates.count > 1 {
let y: CGFloat
if nil != expandedPipFrame {
// Necessary because when the pip is expanded, the
// pip height will not follow along with that of
// the video overflow, which is tiny.
y = yMax - pipSize.height
} else {
y = videoOverflow.frame.origin.y
}
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
view.frame = CGRect(
x: size.width - pipSize.width - 16,
y: y,
width: pipSize.width,
height: pipSize.height
)
}
flipCameraTooltipManager.presentTooltipIfNecessary(
fromView: self.view,
widthReferenceView: self.view,
tailReferenceView: localMemberView,
tailDirection: .down,
isVideoMuted: call.isOutgoingVideoMuted
)
} else {
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
view.frame = CGRect(
x: size.width - pipSize.width - 16,
y: yMax - pipSize.height,
width: pipSize.width,
height: pipSize.height
)
}
flipCameraTooltipManager.presentTooltipIfNecessary(
fromView: self.view,
widthReferenceView: self.view,
tailReferenceView: localMemberView,
tailDirection: .down,
isVideoMuted: call.isOutgoingVideoMuted
)
}
} else {
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
speakerPage.addSubview(view)
view.frame = CGRect(origin: .zero, size: size)
}
}
case .notJoined, .joining, .pending:
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
speakerPage.addSubview(view)
view.frame = CGRect(origin: .zero, size: size)
}
}
}
func updateSwipeToastView() {
let isSpeakerViewAvailable = groupCall.remoteDeviceStates.count >= 2 && groupCall.localDeviceState.joinState == .joined
guard isSpeakerViewAvailable else {
swipeToastView.isHidden = true
return
}
if isAnyRemoteDeviceScreenSharing {
if didUserEverSwipeToScreenShare {
swipeToastView.isHidden = true
return
}
} else if didUserEverSwipeToSpeakerView {
swipeToastView.isHidden = true
return
}
swipeToastView.alpha = 1.0 - (scrollView.contentOffset.y / view.height)
swipeToastView.text = isAnyRemoteDeviceScreenSharing
? OWSLocalizedString(
"GROUP_CALL_SCREEN_SHARE_TOAST",
comment: "Toast view text informing user about swiping to screen share"
)
: OWSLocalizedString(
"GROUP_CALL_SPEAKER_VIEW_TOAST",
comment: "Toast view text informing user about swiping to speaker view"
)
if scrollView.contentOffset.y >= view.height {
swipeToastView.isHidden = true
if isAnyRemoteDeviceScreenSharing {
if !isAutoScrollingToScreenShare {
didUserEverSwipeToScreenShare = true
SDSDatabaseStorage.shared.asyncWrite { writeTx in
Self.keyValueStore.setBool(true, key: Self.didUserSwipeToScreenShareKey, transaction: writeTx)
}
}
} else {
didUserEverSwipeToSpeakerView = true
SDSDatabaseStorage.shared.asyncWrite { writeTx in
Self.keyValueStore.setBool(true, key: Self.didUserSwipeToSpeakerViewKey, transaction: writeTx)
}
}
} else if swipeToastView.isHidden {
swipeToastView.alpha = 0
swipeToastView.isHidden = false
UIView.animate(withDuration: 0.2, delay: 3.0, options: []) {
self.swipeToastView.alpha = 1
}
}
}
private var flipCameraTooltipManager = FlipCameraTooltipManager(db: DependenciesBridge.shared.db)
func updateCallUI(size: CGSize? = nil) {
// Force load the view if it hasn't been yet.
_ = self.view
let localDevice = groupCall.localDeviceState
let isFullScreen = localDevice.joinState != .joined || groupCall.remoteDeviceStates.isEmpty
if let localMemberView = localMemberView as? CallMemberView {
localMemberView.configure(
call: call,
isFullScreen: isFullScreen
)
} else if let localMemberView = localMemberView as? GroupCallLocalMemberView {
localMemberView.configure(call: call, isFullScreen: isFullScreen)
}
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
// In the context of `isCallInPip`, the "pip" refers to when the entire call is in a pip
// (ie, minimized in the app). This is not to be confused with the local member view pip
// (ie, when the call is full screen and the local user is displayed in a pip).
// The following line disallows having a [local member] pip within a [call] pip.
view.isHidden = WindowManager.shared.isCallInPip
}
if let speakerState = groupCall.remoteDeviceStates.sortedBySpeakerTime.first {
if let speakerView = speakerView as? CallMemberView {
speakerView.configure(
call: call,
remoteGroupMemberDeviceState: speakerState
)
} else if let speakerView = speakerView as? GroupCallRemoteMemberView {
speakerView.configure(call: call, device: speakerState)
}
} else {
speakerView.clearConfiguration()
}
guard !isCallMinimized else { return }
// TODO: When ``CallMemberCameraOffView`` is used in Production,
// `noVideoIndicatorView` in this class will no longer be needed.
let showNoVideoIndicator = !FeatureFlags.useCallMemberComposableViewsForLocalUser && groupCall.remoteDeviceStates.isEmpty && groupCall.isOutgoingVideoMuted
// Hide the subviews of this view to collapse the stack.
noVideoIndicatorView.subviews.forEach { $0.isHidden = !showNoVideoIndicator }
if call.groupCallRingState.isIncomingRing {
callControls.isHidden = true
incomingCallControls.isHidden = false
incomingCallControlsConstraint?.isActive = true
// These views aren't visible at this point, but we need them to be configured anyway.
updateMemberViewFrames(size: size, controlsAreHidden: true)
updateScrollViewFrames(size: size, controlsAreHidden: true)
return
}
if !incomingCallControls.isHidden {
// We were showing the incoming call controls, but now we don't want to.
// To make sure all views transition properly, pretend we were showing the regular controls all along.
callControls.isHidden = false
incomingCallControls.isHidden = true
incomingCallControlsConstraint?.isActive = false
}
let hideRemoteControls = shouldRemoteVideoControlsBeHidden && !groupCall.remoteDeviceStates.isEmpty
let remoteControlsAreHidden = callControls.isHidden && callHeader.isHidden
if hideRemoteControls != remoteControlsAreHidden {
callControls.isHidden = false
callHeader.isHidden = false
UIView.animate(withDuration: 0.15, animations: {
self.callControls.alpha = hideRemoteControls ? 0 : 1
self.callHeader.alpha = hideRemoteControls ? 0 : 1
self.updateMemberViewFrames(size: size, controlsAreHidden: hideRemoteControls)
self.updateScrollViewFrames(size: size, controlsAreHidden: hideRemoteControls)
self.view.layoutIfNeeded()
}) { _ in
self.callControls.isHidden = hideRemoteControls
self.callHeader.isHidden = hideRemoteControls
}
} else {
updateMemberViewFrames(size: size, controlsAreHidden: hideRemoteControls)
updateScrollViewFrames(size: size, controlsAreHidden: hideRemoteControls)
}
scheduleControlTimeoutIfNecessary()
updateSwipeToastView()
}
private func dismissCall(shouldHangUp: Bool = true) {
if shouldHangUp {
callService.callUIAdapter.localHangupCall(call)
}
didHangupCall()
}
func didHangupCall() {
guard !hasDismissed else {
return
}
hasDismissed = true
guard
let splitViewSnapshot = SignalApp.shared.snapshotSplitViewController(afterScreenUpdates: false),
view.superview?.insertSubview(splitViewSnapshot, belowSubview: view) != nil
else {
// This can happen if we're in the background when the call is dismissed (say, from CallKit).
WindowManager.shared.endCall(viewController: self)
return
}
splitViewSnapshot.autoPinEdgesToSuperviewEdges()
UIView.animate(withDuration: 0.2, animations: {
self.view.alpha = 0
}) { _ in
splitViewSnapshot.removeFromSuperview()
WindowManager.shared.endCall(viewController: self)
}
}
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
override var prefersHomeIndicatorAutoHidden: Bool {
return true
}
// MARK: - Video control timeout
@objc
private func didTouchRootView(sender: UIGestureRecognizer) {
shouldRemoteVideoControlsBeHidden = !shouldRemoteVideoControlsBeHidden
}
private var controlTimeoutTimer: Timer?
private func scheduleControlTimeoutIfNecessary() {
if groupCall.remoteDeviceStates.isEmpty || shouldRemoteVideoControlsBeHidden {
controlTimeoutTimer?.invalidate()
controlTimeoutTimer = nil
}
guard controlTimeoutTimer == nil else { return }
controlTimeoutTimer = .weakScheduledTimer(
withTimeInterval: 5,
target: self,
selector: #selector(timeoutControls),
userInfo: nil,
repeats: false
)
}
@objc
private func timeoutControls() {
controlTimeoutTimer?.invalidate()
controlTimeoutTimer = nil
guard !isCallMinimized && !groupCall.remoteDeviceStates.isEmpty && !shouldRemoteVideoControlsBeHidden else { return }
shouldRemoteVideoControlsBeHidden = true
}
}
extension GroupCallViewController: CallViewControllerWindowReference {
var localVideoViewReference: UIView { localMemberView }
var remoteVideoViewReference: UIView { speakerView }
var remoteVideoAddress: SignalServiceAddress {
guard let firstMember = groupCall.remoteDeviceStates.sortedByAddedTime.first else {
return DependenciesBridge.shared.tsAccountManager.localIdentifiersWithMaybeSneakyTransaction!.aciAddress
}
return firstMember.address
}
public func returnFromPip(pipWindow: UIWindow) {
// The call "pip" uses our remote and local video views since only
// one `AVCaptureVideoPreviewLayer` per capture session is supported.
// We need to re-add them when we return to this view.
guard speakerView.superview != speakerPage && localMemberView.superview != view else {
return owsFailDebug("unexpectedly returned to call while we own the video views")
}
guard let splitViewSnapshot = SignalApp.shared.snapshotSplitViewController(afterScreenUpdates: false) else {
return owsFailDebug("failed to snapshot rootViewController")
}
guard let pipSnapshot = pipWindow.snapshotView(afterScreenUpdates: false) else {
return owsFailDebug("failed to snapshot pip")
}
isCallMinimized = false
shouldRemoteVideoControlsBeHidden = false
animateReturnFromPip(pipSnapshot: pipSnapshot, pipFrame: pipWindow.frame, splitViewSnapshot: splitViewSnapshot)
}
func willMoveToPip(pipWindow: UIWindow) {
flipCameraTooltipManager.dismissTooltip()
localMemberView.applyChangesToCallMemberViewAndVideoView(startWithVideoView: false) { view in
view.isHidden = true
}
}
private func animateReturnFromPip(pipSnapshot: UIView, pipFrame: CGRect, splitViewSnapshot: UIView) {
guard let window = view.window else { return owsFailDebug("missing window") }
view.superview?.insertSubview(splitViewSnapshot, belowSubview: view)
splitViewSnapshot.autoPinEdgesToSuperviewEdges()
let originalContentOffset = scrollView.contentOffset
view.frame = pipFrame
view.addSubview(pipSnapshot)
pipSnapshot.autoPinEdgesToSuperviewEdges()
view.layoutIfNeeded()
UIView.animate(withDuration: 0.2, animations: {
pipSnapshot.alpha = 0
self.view.frame = window.frame
self.updateCallUI()
self.scrollView.contentOffset = originalContentOffset
self.view.layoutIfNeeded()
}) { _ in
splitViewSnapshot.removeFromSuperview()
pipSnapshot.removeFromSuperview()
if self.hasUnresolvedSafetyNumberMismatch {
self.resolveSafetyNumberMismatch()
}
}
}
private func safetyNumberMismatchAddresses(untrustedThreshold: Date?) -> [SignalServiceAddress] {
databaseStorage.read { transaction in
let addressesToCheck: [SignalServiceAddress]
if groupCall.localDeviceState.joinState == .notJoined {
// If we haven't joined the call yet, we want to alert for all members of the group
addressesToCheck = call.thread.recipientAddresses(with: transaction)
} else {
// If we are in the call, we only care about safety numbers for the active call participants
addressesToCheck = groupCall.remoteDeviceStates.map { $0.value.address }
}
let identityManager = DependenciesBridge.shared.identityManager
return addressesToCheck.filter { memberAddress in
identityManager.untrustedIdentityForSending(
to: memberAddress,
untrustedThreshold: untrustedThreshold,
tx: transaction.asV2Read
) != nil
}
}
}
fileprivate func resolveSafetyNumberMismatch() {
let resendMediaKeysAndResetMismatch = { [unowned self] in
self.groupCall.resendMediaKeys()
self.hasUnresolvedSafetyNumberMismatch = false
}
if !isCallMinimized, CurrentAppContext().isAppForegroundAndActive() {
presentSafetyNumberChangeSheetIfNecessary { [weak self] success in
guard let self = self else { return }
if success {
resendMediaKeysAndResetMismatch()
} else {
self.dismissCall()
}
}
} else {
let unresolvedAddresses = safetyNumberMismatchAddresses(untrustedThreshold: nil)
guard !unresolvedAddresses.isEmpty else {
// Spurious warning, maybe from delayed callbacks.
resendMediaKeysAndResetMismatch()
return
}
// If a problematic member was present at join, leaves, and then joins again,
// we'll still treat them as having been there "since join", but that's okay.
// It's not worth trying to track this more precisely.
let atLeastOneUnresolvedPresentAtJoin = unresolvedAddresses.contains { membersAtJoin?.contains($0) ?? false }
Self.notificationPresenter.notifyForGroupCallSafetyNumberChange(inThread: call.thread,
presentAtJoin: atLeastOneUnresolvedPresentAtJoin)
}
}
fileprivate func presentSafetyNumberChangeSheetIfNecessary(untrustedThreshold: Date? = nil, completion: @escaping (Bool) -> Void) {
let localDeviceHasNotJoined = groupCall.localDeviceState.joinState == .notJoined
let newUntrustedThreshold = Date()
let addressesToAlert = safetyNumberMismatchAddresses(untrustedThreshold: untrustedThreshold)
// There are no unverified addresses that we're currently concerned about. No need to show a sheet
guard !addressesToAlert.isEmpty else { return completion(true) }
if let existingSheet = presentedViewController as? SafetyNumberConfirmationSheet {
// The set of untrusted addresses may have changed.
// It's a bit clunky, but we'll just dismiss the existing sheet before putting up a new one.
existingSheet.dismiss(animated: false)
}
let startCallString = OWSLocalizedString("CALL_START_BUTTON", comment: "Button to start a call")
let joinCallString = OWSLocalizedString("GROUP_CALL_JOIN_BUTTON", comment: "Button to join an ongoing group call")
let continueCallString = OWSLocalizedString("GROUP_CALL_CONTINUE_BUTTON", comment: "Button to continue an ongoing group call")
let leaveCallString = OWSLocalizedString("GROUP_CALL_LEAVE_BUTTON", comment: "Button to leave a group call")
let cancelString = CommonStrings.cancelButton
let approveText: String
let denyText: String
if localDeviceHasNotJoined {
approveText = call.ringRestrictions.contains(.callInProgress) ? joinCallString : startCallString
denyText = cancelString
} else {
approveText = continueCallString
denyText = leaveCallString
}
let sheet = SafetyNumberConfirmationSheet(
addressesToConfirm: addressesToAlert,
confirmationText: approveText,
cancelText: denyText,
theme: .translucentDark
) { [weak self] didApprove in
if let self, didApprove {
self.presentSafetyNumberChangeSheetIfNecessary(untrustedThreshold: newUntrustedThreshold, completion: completion)
} else {
completion(false)
}
}
sheet.allowsDismissal = localDeviceHasNotJoined
present(sheet, animated: true, completion: nil)
}
}
extension GroupCallViewController: CallObserver {
func groupCallLocalDeviceStateChanged(_ call: SignalCall) {
AssertIsOnMainThread()
owsAssertDebug(call.isGroupCall)
updateCallUI()
switch call.groupCall.localDeviceState.joinState {
case .joined:
if membersAtJoin == nil {
membersAtJoin = Set(call.groupCall.remoteDeviceStates.lazy.map { $0.value.address })
}
case .pending, .joining, .notJoined:
membersAtJoin = nil
}
}
func groupCallRemoteDeviceStatesChanged(_ call: SignalCall) {
AssertIsOnMainThread()
owsAssertDebug(call.isGroupCall)
isAnyRemoteDeviceScreenSharing = call.groupCall.remoteDeviceStates.values.first { $0.sharingScreen == true } != nil
updateCallUI()
}
func groupCallPeekChanged(_ call: SignalCall) {
AssertIsOnMainThread()
owsAssertDebug(call.isGroupCall)
updateCallUI()
}
func groupCallEnded(_ call: SignalCall, reason: GroupCallEndReason) {
AssertIsOnMainThread()
owsAssertDebug(call.isGroupCall)
guard reason != .deviceExplicitlyDisconnected else {
dismissCall(shouldHangUp: false)
return
}
defer { updateCallUI() }
let title: String
if reason == .hasMaxDevices {
if let maxDevices = groupCall.maxDevices {
let formatString = OWSLocalizedString("GROUP_CALL_HAS_MAX_DEVICES_%d", tableName: "PluralAware",
comment: "An error displayed to the user when the group call ends because it has exceeded the max devices. Embeds {{max device count}}."
)
title = String.localizedStringWithFormat(formatString, maxDevices)
} else {
title = OWSLocalizedString(
"GROUP_CALL_HAS_MAX_DEVICES_UNKNOWN_COUNT",
comment: "An error displayed to the user when the group call ends because it has exceeded the max devices."
)
}
} else {
owsFailDebug("Group call ended with reason \(reason)")
title = OWSLocalizedString(
"GROUP_CALL_UNEXPECTEDLY_ENDED",
comment: "An error displayed to the user when the group call unexpectedly ends."
)
}
let actionSheet = ActionSheetController(title: title)
actionSheet.addAction(ActionSheetAction(
title: CommonStrings.okButton,
style: .default,
handler: { [weak self] _ in
guard reason == .hasMaxDevices else { return }
self?.dismissCall()
}
))
presentActionSheet(actionSheet)
}
func groupCallReceivedReactions(_ call: SignalCall, reactions: [SignalRingRTC.Reaction]) {
let mappedReactions = databaseStorage.read { tx in
let localIdentifiers = DependenciesBridge.shared.tsAccountManager.localIdentifiers(tx: tx.asV2Read)
return reactions.map { reaction in
let name: String
if
let remoteDeviceState = call.groupCall.remoteDeviceStates[reaction.demuxId],
remoteDeviceState.aci != localIdentifiers?.aci
{
name = contactsManager.displayName(for: remoteDeviceState.address, tx: tx).resolvedValue()
} else {
name = CommonStrings.you
}
return Reaction(emoji: reaction.value, name: name, timestamp: Date.timeIntervalSinceReferenceDate)
}
}
self.incomingReactionsView.addReactions(reactions: mappedReactions)
}
func callMessageSendFailedUntrustedIdentity(_ call: SignalCall) {
AssertIsOnMainThread()
guard call === self.call else { return owsFailDebug("Unexpected call \(call)") }
if !hasUnresolvedSafetyNumberMismatch {
hasUnresolvedSafetyNumberMismatch = true
resolveSafetyNumberMismatch()
}
}
}
extension GroupCallViewController: IncomingCallControlsDelegate {
func didDeclineIncomingCall() {
dismissCall()
}
func didAcceptIncomingCall(sender: UIButton) {
// Explicitly unmute video in order to request permissions as needed.
// (Audio is unmuted as part of the call UI adapter.)
let videoMute = IncomingCallControls.VideoEnabledTag(rawValue: sender.tag) == .disabled
callService.updateIsLocalVideoMuted(isLocalVideoMuted: videoMute)
// When turning off video, default speakerphone to on.
if videoMute && !callService.audioService.hasExternalInputs {
callService.audioService.requestSpeakerphone(call: call, isEnabled: true)
}
callService.callUIAdapter.answerCall(call)
}
}
extension GroupCallViewController: CallHeaderDelegate {
func didTapBackButton() {
if groupCall.localDeviceState.joinState == .joined {
isCallMinimized = true
WindowManager.shared.leaveCallView()
} else {
dismissCall()
}
}
func didTapMembersButton() {
let sheet = GroupCallMemberSheet(call: call)
present(sheet, animated: true)
}
}
extension GroupCallViewController: GroupCallVideoOverflowDelegate {
var firstOverflowMemberIndex: Int {
if scrollView.contentOffset.y >= view.height {
return 1
} else {
return videoGrid.maxItems
}
}
}
extension GroupCallViewController: UIScrollViewDelegate {
func scrollViewDidScroll(_ scrollView: UIScrollView) {
// If we changed pages, update the overflow view.
if scrollView.contentOffset.y == 0 || scrollView.contentOffset.y == view.height {
videoOverflow.reloadData()
updateCallUI()
}
if isAutoScrollingToScreenShare {
isAutoScrollingToScreenShare = scrollView.contentOffset.y != speakerView.frame.origin.y
}
updateSwipeToastView()
}
}
extension GroupCallViewController: CallControlsDelegate {
func didPressRing() {
if call.ringRestrictions.isEmpty {
// Refresh the call header.
callHeader.groupCallLocalDeviceStateChanged(call)
} else if call.ringRestrictions.contains(.groupTooLarge) {
let toast = ToastController(text: OWSLocalizedString("GROUP_CALL_TOO_LARGE_TO_RING", comment: "Text displayed when trying to turn on ringing when calling a large group."))
toast.presentToastView(from: .top, of: view, inset: view.safeAreaInsets.top + 8)
}
}
func didPressJoin() {
guard call.canJoin else {
let text: String
if let maxDevices = call.groupCall.maxDevices {
let formatString = OWSLocalizedString("GROUP_CALL_HAS_MAX_DEVICES_%d", tableName: "PluralAware",
comment: "An error displayed to the user when the group call ends because it has exceeded the max devices. Embeds {{max device count}}."
)
text = String.localizedStringWithFormat(formatString, maxDevices)
} else {
text = OWSLocalizedString(
"GROUP_CALL_HAS_MAX_DEVICES_UNKNOWN_COUNT",
comment: "An error displayed to the user when the group call ends because it has exceeded the max devices."
)
}
let toastController = ToastController(text: text)
// Leave the toast up longer than usual because this message is pretty long.
toastController.presentToastView(
from: .top,
of: view,
inset: view.safeAreaInsets.top + 8,
dismissAfter: .seconds(8)
)
return
}
presentSafetyNumberChangeSheetIfNecessary { [weak self] success in
guard let self = self else { return }
if success {
self.callService.joinGroupCallIfNecessary(self.call)
}
}
}
func didPressHangup() {
didHangupCall()
}
}
extension GroupCallViewController: CallMemberErrorPresenter {
func presentErrorSheet(for error: CallMemberErrorState) {
let title: String
let message: String
switch error {
case let .blocked(address):
message = OWSLocalizedString(
"GROUP_CALL_BLOCKED_ALERT_MESSAGE",
comment: "Message body for alert explaining that a group call participant is blocked")
let titleFormat = OWSLocalizedString(
"GROUP_CALL_BLOCKED_ALERT_TITLE_FORMAT",
comment: "Title for alert explaining that a group call participant is blocked. Embeds {{ user's name }}")
let displayName = databaseStorage.read { tx in contactsManager.displayName(for: address, tx: tx).resolvedValue() }
title = String(format: titleFormat, displayName)
case let .noMediaKeys(address):
message = OWSLocalizedString(
"GROUP_CALL_NO_KEYS_ALERT_MESSAGE",
comment: "Message body for alert explaining that a group call participant cannot be displayed because of missing keys")
let titleFormat = OWSLocalizedString(
"GROUP_CALL_NO_KEYS_ALERT_TITLE_FORMAT",
comment: "Title for alert explaining that a group call participant cannot be displayed because of missing keys. Embeds {{ user's name }}")
let displayName = databaseStorage.read { tx in contactsManager.displayName(for: address, tx: tx).resolvedValue() }
title = String(format: titleFormat, displayName)
}
let actionSheet = ActionSheetController(title: title, message: message, theme: .translucentDark)
actionSheet.addAction(ActionSheetAction(title: CommonStrings.okButton))
presentActionSheet(actionSheet)
}
}
extension GroupCallViewController: AnimatableLocalMemberViewDelegate {
var enclosingBounds: CGRect {
return self.view.bounds
}
var remoteDeviceCount: Int {
return call.groupCall.remoteDeviceStates.count
}
func animatableLocalMemberViewDidCompleteExpandAnimation(_ localMemberView: CallMemberView) {
self.expandedPipFrame = localMemberView.frame
self.isPipAnimationInProgress = false
performRetroactiveUiUpdateIfNecessary()
}
func animatableLocalMemberViewDidCompleteShrinkAnimation(_ localMemberView: CallMemberView) {
self.expandedPipFrame = nil
self.isPipAnimationInProgress = false
performRetroactiveUiUpdateIfNecessary()
}
private func performRetroactiveUiUpdateIfNecessary() {
if self.shouldRelayoutAfterPipAnimationCompletes {
if
let postAnimationUpdateMemberViewFramesSize,
let postAnimationUpdateMemberViewFramesControlsAreHidden
{
updateMemberViewFrames(
size: postAnimationUpdateMemberViewFramesSize,
controlsAreHidden: postAnimationUpdateMemberViewFramesControlsAreHidden
)
self.postAnimationUpdateMemberViewFramesSize = nil
self.postAnimationUpdateMemberViewFramesControlsAreHidden = nil
}
self.shouldRelayoutAfterPipAnimationCompletes = false
}
}
func animatableLocalMemberViewWillBeginAnimation(_ localMemberView: CallMemberView) {
self.isPipAnimationInProgress = true
self.flipCameraTooltipManager.dismissTooltip()
}
}