diff options
Diffstat (limited to 'Xamarin.Forms.Platform.iOS/VisualElementRenderer.cs')
| -rw-r--r-- | Xamarin.Forms.Platform.iOS/VisualElementRenderer.cs | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.iOS/VisualElementRenderer.cs b/Xamarin.Forms.Platform.iOS/VisualElementRenderer.cs index ab212b21..d4da0930 100644 --- a/Xamarin.Forms.Platform.iOS/VisualElementRenderer.cs +++ b/Xamarin.Forms.Platform.iOS/VisualElementRenderer.cs @@ -4,6 +4,8 @@ using System.Collections.ObjectModel; using System.Collections.Specialized; using System.Drawing; using System.ComponentModel; +using Xamarin.Forms.PlatformConfiguration.iOSSpecific; + #if __UNIFIED__ using UIKit; #else @@ -13,6 +15,7 @@ using MonoTouch.UIKit; using RectangleF = CoreGraphics.CGRect; using SizeF = CoreGraphics.CGSize; using PointF = CoreGraphics.CGPoint; +using CoreGraphics; #else using nfloat=System.Single; @@ -44,6 +47,9 @@ namespace Xamarin.Forms.Platform.iOS VisualElementPackager _packager; VisualElementTracker _tracker; + UIVisualEffectView _blur; + BlurEffectStyle _previousBlur; + protected VisualElementRenderer() : base(RectangleF.Empty) { _propertyChangedHandler = OnElementPropertyChanged; @@ -180,6 +186,17 @@ namespace Xamarin.Forms.Platform.iOS return new SizeF(0, 0); } + public override void Draw(RectangleF rect) + { + base.Draw(rect); + if (_blur != null) + { + _blur.Frame = rect; + if (_blur.Superview == null) + Superview.Add(_blur); + } + } + protected override void Dispose(bool disposing) { if ((_flags & VisualElementRendererFlags.Disposed) != 0) @@ -220,6 +237,9 @@ namespace Xamarin.Forms.Platform.iOS var changed = ElementChanged; if (changed != null) changed(this, e); + + if (e.NewElement != null) + SetBlur((BlurEffectStyle)e.NewElement.GetValue(PlatformConfiguration.iOSSpecific.VisualElement.BlurEffectProperty)); } protected virtual void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e) @@ -228,6 +248,8 @@ namespace Xamarin.Forms.Platform.iOS SetBackgroundColor(Element.BackgroundColor); else if (e.PropertyName == Layout.IsClippedToBoundsProperty.PropertyName) UpdateClipToBounds(); + else if (e.PropertyName == PlatformConfiguration.iOSSpecific.VisualElement.BlurEffectProperty.PropertyName) + SetBlur((BlurEffectStyle)Element.GetValue(PlatformConfiguration.iOSSpecific.VisualElement.BlurEffectProperty)); } protected virtual void OnRegisterEffect(PlatformEffect effect) @@ -248,6 +270,44 @@ namespace Xamarin.Forms.Platform.iOS BackgroundColor = color.ToUIColor(); } + protected virtual void SetBlur(BlurEffectStyle blur) + { + if (_previousBlur == blur) + return; + + _previousBlur = blur; + + if (_blur != null) + { + _blur.RemoveFromSuperview(); + _blur = null; + } + + if (blur == BlurEffectStyle.None) + { + SetNeedsDisplay(); + return; + } + + UIBlurEffect blurEffect; + switch (blur) + { + default: + case BlurEffectStyle.ExtraLight: + blurEffect = UIBlurEffect.FromStyle(UIBlurEffectStyle.ExtraLight); + break; + case BlurEffectStyle.Light: + blurEffect = UIBlurEffect.FromStyle(UIBlurEffectStyle.Light); + break; + case BlurEffectStyle.Dark: + blurEffect = UIBlurEffect.FromStyle(UIBlurEffectStyle.Dark); + break; + } + + _blur = new UIVisualEffectView(blurEffect); + SetNeedsDisplay(); + } + protected virtual void UpdateNativeWidget() { } |