diff options
Diffstat (limited to 'Xamarin.Forms.Platform.MacOS/Renderers/CarouselPageRenderer.cs')
| -rw-r--r-- | Xamarin.Forms.Platform.MacOS/Renderers/CarouselPageRenderer.cs | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/Xamarin.Forms.Platform.MacOS/Renderers/CarouselPageRenderer.cs b/Xamarin.Forms.Platform.MacOS/Renderers/CarouselPageRenderer.cs deleted file mode 100644 index 014d503b..00000000 --- a/Xamarin.Forms.Platform.MacOS/Renderers/CarouselPageRenderer.cs +++ /dev/null @@ -1,229 +0,0 @@ -using System; -using System.Collections.Generic; -using System.Collections.Specialized; -using System.ComponentModel; -using AppKit; -using Foundation; - -namespace Xamarin.Forms.Platform.MacOS -{ - [Register("CarouselPageRenderer")] - public class CarouselPageRenderer : NSPageController, IVisualElementRenderer - { - bool _appeared; - bool _disposed; - EventTracker _events; - VisualElementTracker _tracker; - - public CarouselPageRenderer() - { - View = new NSView - { - WantsLayer = true, - Layer = { BackgroundColor = NSColor.White.CGColor } - }; - } - - public CarouselPageRenderer(IntPtr handle) : base(handle) - { - } - - IElementController ElementController => Element; - - IPageController PageController => (IPageController)Element; - - public override nint SelectedIndex - { - get { return base.SelectedIndex; } - set - { - if (base.SelectedIndex == value) - return; - base.SelectedIndex = value; - if (Carousel != null) - Carousel.CurrentPage = (ContentPage)ElementController.LogicalChildren[(int)SelectedIndex]; - } - } - - public VisualElement Element { get; private set; } - - public event EventHandler<VisualElementChangedEventArgs> ElementChanged; - - public SizeRequest GetDesiredSize(double widthConstraint, double heightConstraint) - { - return NativeView.GetSizeRequest(widthConstraint, heightConstraint); - } - - public NSView NativeView => View; - - public void SetElement(VisualElement element) - { - VisualElement oldElement = Element; - Element = element; - - Init(); - - OnElementChanged(new VisualElementChangedEventArgs(oldElement, element)); - } - - public void SetElementSize(Size size) - { - Element.Layout(new Rectangle(Element.X, Element.Y, size.Width, size.Height)); - } - - public NSViewController ViewController => this; - - public override void ViewDidAppear() - { - base.ViewDidAppear(); - if (_appeared || _disposed) - return; - - _appeared = true; - PageController.SendAppearing(); - } - - public override void ViewDidDisappear() - { - base.ViewDidDisappear(); - - if (!_appeared || _disposed) - return; - - _appeared = false; - PageController.SendDisappearing(); - } - - protected override void Dispose(bool disposing) - { - if (disposing && !_disposed) - { - if (Carousel != null) - { - Carousel.PropertyChanged -= OnPropertyChanged; - Carousel.PagesChanged -= OnPagesChanged; - } - - Platform.SetRenderer(Element, null); - - if (_appeared) - { - _appeared = false; - PageController?.SendDisappearing(); - } - - if (_events != null) - { - _events.Dispose(); - _events = null; - } - - if (_tracker != null) - { - _tracker.Dispose(); - _tracker = null; - } - - Element = null; - _disposed = true; - } - - base.Dispose(disposing); - } - - void OnElementChanged(VisualElementChangedEventArgs e) - { - ElementChanged?.Invoke(this, e); - } - - void ConfigureNSPageController() - { - TransitionStyle = NSPageControllerTransitionStyle.HorizontalStrip; - } - - CarouselPage Carousel => Element as CarouselPage; - - void Init() - { - Delegate = new PageControllerDelegate(); - - _tracker = new VisualElementTracker(this); - _events = new EventTracker(this); - _events.LoadEvents(View); - - ConfigureNSPageController(); - - UpdateBackground(); - UpdateSource(); - - Carousel.PropertyChanged += OnPropertyChanged; - Carousel.PagesChanged += OnPagesChanged; - } - - void UpdateSource() - { - var pages = new List<NSPageContainer>(); - for (var i = 0; i < ElementController.LogicalChildren.Count; i++) - { - Element element = ElementController.LogicalChildren[i]; - var child = element as ContentPage; - if (child != null) - pages.Add(new NSPageContainer(child, i)); - } - - ArrangedObjects = pages.ToArray(); - UpdateCurrentPage(false); - } - - void OnPagesChanged(object sender, NotifyCollectionChangedEventArgs e) - { - UpdateSource(); - } - - void OnPropertyChanged(object sender, PropertyChangedEventArgs e) - { - if (e.PropertyName == nameof(TabbedPage.CurrentPage)) - UpdateCurrentPage(); - else if (e.PropertyName == VisualElement.BackgroundColorProperty.PropertyName) - UpdateBackground(); - else if (e.PropertyName == Page.BackgroundImageProperty.PropertyName) - UpdateBackground(); - } - - void UpdateBackground() - { - if (View.Layer == null) - return; - - string bgImage = ((Page)Element).BackgroundImage; - - if (!string.IsNullOrEmpty(bgImage)) - { - View.Layer.BackgroundColor = NSColor.FromPatternImage(NSImage.ImageNamed(bgImage)).CGColor; - return; - } - - Color bgColor = Element.BackgroundColor; - View.Layer.BackgroundColor = bgColor.IsDefault ? NSColor.White.CGColor : bgColor.ToCGColor(); - } - - void UpdateCurrentPage(bool animated = true) - { - ContentPage current = Carousel.CurrentPage; - if (current != null) - { - int index = Carousel.CurrentPage != null ? CarouselPage.GetIndex(Carousel.CurrentPage) : 0; - if (index < 0) - index = 0; - - if (SelectedIndex == index) - return; - - if (animated) - NSAnimationContext.RunAnimation(context => { ((NSPageController)Animator).SelectedIndex = index; }, - CompleteTransition); - else SelectedIndex = index; - } - } - } -}
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