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* limitations under the License.
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*/
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-/// Alias defining a completion closure that returns a Bool
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-public typealias CompletionAction = (Bool) -> Void
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+public typealias AnimationCompletion = (Bool) -> Void
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-/// A window that allows its root view controller to be presented
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-/// in full screen or in a custom Picture in Picture mode
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-open class PiPWindow: UIWindow {
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+/// Coordinates the view state of a specified view to allow
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+/// to be presented in full screen or in a custom Picture in Picture mode.
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+/// This object will also provide the drag and tap interactions of the view
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+/// when is presented in Picure in Picture mode.
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+public class PiPViewCoordinator {
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- /// Limits the boundries of root view position on screen when minimized
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+ /// Limits the boundries of view position on screen when minimized
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public var dragBoundInsets: UIEdgeInsets = UIEdgeInsets(top: 25,
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left: 5,
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bottom: 5,
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@@ -31,10 +32,10 @@ open class PiPWindow: UIWindow {
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}
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}
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- /// The size ratio for root view controller view when in PiP mode
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+ /// The size ratio of the view when in PiP mode
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public var pipSizeRatio: CGFloat = {
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let deviceIdiom = UIScreen.main.traitCollection.userInterfaceIdiom
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- switch (deviceIdiom) {
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+ switch deviceIdiom {
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case .pad:
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return 0.25
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case .phone:
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@@ -44,50 +45,62 @@ open class PiPWindow: UIWindow {
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}
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}()
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- /// The PiP state of this contents of the window
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- private(set) var isInPiP: Bool = false
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+ private(set) var isInPiP: Bool = false // true if view is in PiP mode
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- private let dragController: DragGestureController = DragGestureController()
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+ private(set) var view: UIView
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+ private var currentBounds: CGRect = CGRect.zero
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- /// Used when in PiP mode to enable/disable exit PiP UI
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private var tapGestureRecognizer: UITapGestureRecognizer?
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private var exitPiPButton: UIButton?
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- /// Help out to bubble up the gesture detection outside of the rootVC frame
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- open override func point(inside point: CGPoint,
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- with event: UIEvent?) -> Bool {
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- guard let vc = rootViewController else {
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- return super.point(inside: point, with: event)
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- }
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- return vc.view.frame.contains(point)
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+ private let dragController: DragGestureController = DragGestureController()
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+
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+ public init(withView view: UIView) {
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+ self.view = view
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+ }
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+
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+ /// Configure the view to be always on top of all the contents
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+ /// of the provided parent view.
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+ /// If a parentView is not provided it will try to use the main window
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+ public func configureAsStickyView(withParentView parentView: UIView? = nil) {
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+ guard
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+ let parentView = parentView ?? UIApplication.shared.keyWindow
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+ else { return }
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+
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+ parentView.addSubview(view)
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+ currentBounds = parentView.bounds
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+ view.frame = currentBounds
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+ view.layer.zPosition = CGFloat(Float.greatestFiniteMagnitude)
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}
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- /// animate in the window
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- open func show(completion: CompletionAction? = nil) {
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- if self.isHidden || self.alpha < 1 {
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- self.isHidden = false
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- self.alpha = 0
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+ /// Show view with fade in animation
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+ public func show(completion: AnimationCompletion? = nil) {
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+ if view.isHidden || view.alpha < 1 {
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+ view.isHidden = false
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+ view.alpha = 0
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- animateTransition(animations: {
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- self.alpha = 1
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+ animateTransition(animations: { [weak self] in
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+ self?.view.alpha = 1
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}, completion: completion)
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}
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}
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- /// animate out the window
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- open func hide(completion: CompletionAction? = nil) {
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- if !self.isHidden || self.alpha > 0 {
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- animateTransition(animations: {
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- self.alpha = 1
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+ /// Hide view with fade out animation
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+ public func hide(completion: AnimationCompletion? = nil) {
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+ if view.isHidden || view.alpha > 0 {
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+ animateTransition(animations: { [weak self] in
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+ self?.view.alpha = 0
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+ self?.view.isHidden = true
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}, completion: completion)
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}
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}
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- /// Resize the root view to PiP mode
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- open func enterPictureInPicture() {
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- guard let view = rootViewController?.view else { return }
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+ /// Resize view to and change state to custom PictureInPicture mode
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+ /// This will resize view, add a gesture to enable user to "drag" view
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+ /// around screen, and add a button of top of the view to be able to exit mode
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+ public func enterPictureInPicture() {
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isInPiP = true
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- animateRootViewChange()
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+ animateViewChange()
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dragController.startDragListener(inView: view)
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dragController.insets = dragBoundInsets
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@@ -99,10 +112,11 @@ open class PiPWindow: UIWindow {
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view.addGestureRecognizer(tapGestureRecognizer)
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}
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- /// Resize the root view to full screen
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- open func exitPictureInPicture() {
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+ /// Exit Picture in picture mode, this will resize view, remove
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+ /// exit pip button, and disable the drag gesture
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+ @objc public func exitPictureInPicture() {
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isInPiP = false
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- animateRootViewChange()
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+ animateViewChange()
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dragController.stopDragListener()
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// hide PiP UI
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@@ -115,6 +129,13 @@ open class PiPWindow: UIWindow {
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tapGestureRecognizer = nil
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}
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+ /// Reset view to provide bounds, use this method on rotation or
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+ /// screen size changes
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+ public func resetBounds(bounds: CGRect) {
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+ currentBounds = bounds
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+ exitPictureInPicture()
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+ }
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+
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/// Stop the dragging gesture of the root view
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public func stopDragGesture() {
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dragController.stopDragListener()
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@@ -132,41 +153,14 @@ open class PiPWindow: UIWindow {
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button.backgroundColor = .gray
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button.layer.cornerRadius = size.width / 2
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button.frame = CGRect(origin: CGPoint.zero, size: size)
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- if let view = rootViewController?.view {
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- button.center = view.convert(view.center, from:view.superview)
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- }
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+ button.center = view.convert(view.center, from: view.superview)
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button.addTarget(target, action: action, for: .touchUpInside)
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return button
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}
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- // MARK: - Manage presentation switching
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-
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- private func animateRootViewChange() {
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- UIView.animate(withDuration: 0.25) {
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- self.rootViewController?.view.frame = self.changeRootViewRect()
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- self.rootViewController?.view.setNeedsLayout()
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- }
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- }
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-
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- private func changeRootViewRect() -> CGRect {
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- guard isInPiP else {
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- return self.bounds
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- }
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-
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- // resize to suggested ratio and position to the bottom right
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- let adjustedBounds = UIEdgeInsetsInsetRect(self.bounds, dragBoundInsets)
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- let size = CGSize(width: bounds.size.width * pipSizeRatio,
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- height: bounds.size.height * pipSizeRatio)
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- let x: CGFloat = adjustedBounds.maxX - size.width
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- let y: CGFloat = adjustedBounds.maxY - size.height
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- return CGRect(x: x, y: y, width: size.width, height: size.height)
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- }
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-
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- // MARK: - Exit PiP
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+ // MARK: - Interactions
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@objc private func toggleExitPiP() {
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- guard let view = rootViewController?.view else { return }
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-
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if exitPiPButton == nil {
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// show button
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let exitSelector = #selector(exitPictureInPicture)
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@@ -182,18 +176,40 @@ open class PiPWindow: UIWindow {
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}
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}
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- @objc private func exitPiP() {
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- exitPictureInPicture()
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+ // MARK: - Size calculation
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+
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+ private func animateViewChange() {
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+ UIView.animate(withDuration: 0.25) {
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+ self.view.frame = self.changeViewRect()
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+ self.view.setNeedsLayout()
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+ }
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+ }
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+
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+ private func changeViewRect() -> CGRect {
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+ let bounds = currentBounds
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+
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+ guard isInPiP else {
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+ return bounds
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+ }
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+
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+ // resize to suggested ratio and position to the bottom right
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+ let adjustedBounds = UIEdgeInsetsInsetRect(bounds, dragBoundInsets)
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+ let size = CGSize(width: bounds.size.width * pipSizeRatio,
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+ height: bounds.size.height * pipSizeRatio)
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+ let x: CGFloat = adjustedBounds.maxX - size.width
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+ let y: CGFloat = adjustedBounds.maxY - size.height
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+ return CGRect(x: x, y: y, width: size.width, height: size.height)
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}
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- // MARK: - Animation transition
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+ // MARK: - Animation helpers
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private func animateTransition(animations: @escaping () -> Void,
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- completion: CompletionAction?) {
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+ completion: AnimationCompletion?) {
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UIView.animate(withDuration: 0.1,
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delay: 0,
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options: .beginFromCurrentState,
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animations: animations,
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completion: completion)
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}
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+
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}
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Daniel Ornelas
7 年之前