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Merge pull request #58 from muak/development
Add Gradient
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| using System; | ||
| using System.ComponentModel; | ||
| using System.Linq; | ||
| using AiForms.Effects; | ||
| using AiForms.Effects.Droid; | ||
| using Android.Graphics.Drawables; | ||
| using Xamarin.Forms; | ||
| using Xamarin.Forms.Platform.Android; | ||
|
|
||
| [assembly: ExportEffect(typeof(GradientPlatformEffect), nameof(Gradient))] | ||
| namespace AiForms.Effects.Droid | ||
| { | ||
| public class GradientPlatformEffect:AiEffectBase | ||
| { | ||
| Android.Views.View _view; | ||
| GradientDrawable _gradient; | ||
| Drawable _orgDrawable; | ||
|
|
||
| protected override void OnAttachedOverride() | ||
| { | ||
| _view = Container ?? Control; | ||
|
|
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| _gradient = new GradientDrawable(); | ||
| _orgDrawable = _view.Background; | ||
|
|
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| UpdateGradient(); | ||
| } | ||
|
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| protected override void OnDetachedOverride() | ||
| { | ||
| if(!IsDisposed) | ||
| { | ||
| _view.Background = _orgDrawable; | ||
| _view.ClipToOutline = false; | ||
| System.Diagnostics.Debug.WriteLine($"{this.GetType().FullName} Detached Disposing"); | ||
| } | ||
|
|
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| _gradient?.Dispose(); | ||
| _gradient = null; | ||
| _view = null; | ||
| System.Diagnostics.Debug.WriteLine($"{this.GetType().FullName} Detached completely"); | ||
| } | ||
|
|
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| protected override void OnElementPropertyChanged(PropertyChangedEventArgs args) | ||
| { | ||
| base.OnElementPropertyChanged(args); | ||
|
|
||
| if (!IsSupportedByApi) | ||
| return; | ||
|
|
||
| if (IsDisposed) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| if (args.PropertyName == Gradient.ColorsProperty.PropertyName || | ||
| args.PropertyName == Gradient.OrientationProperty.PropertyName) | ||
| { | ||
| UpdateGradient(); | ||
| } | ||
| } | ||
|
|
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| void UpdateGradient() | ||
| { | ||
| var colors = Gradient.GetColors(Element); | ||
| if(colors == null) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| _gradient.SetColors(colors.Select(x => (int)x.ToAndroid()).ToArray()); | ||
| _gradient.SetOrientation(ConvertOrientation()); | ||
|
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| _view.ClipToOutline = true; //not to overflow children | ||
| _view.SetBackground(_gradient); | ||
| } | ||
|
|
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| GradientDrawable.Orientation ConvertOrientation() | ||
| { | ||
| var orientation = Gradient.GetOrientation(Element); | ||
|
|
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| switch (orientation) | ||
| { | ||
| case GradientOrientation.LeftRight: | ||
| return GradientDrawable.Orientation.LeftRight; | ||
| case GradientOrientation.BlTr: | ||
| return GradientDrawable.Orientation.BlTr; | ||
| case GradientOrientation.BottomTop: | ||
| return GradientDrawable.Orientation.BottomTop; | ||
| case GradientOrientation.BrTl: | ||
| return GradientDrawable.Orientation.BrTl; | ||
| case GradientOrientation.RightLeft: | ||
| return GradientDrawable.Orientation.RightLeft; | ||
| case GradientOrientation.TrBl: | ||
| return GradientDrawable.Orientation.TrBl; | ||
| case GradientOrientation.TopBottom: | ||
| return GradientDrawable.Orientation.TopBottom; | ||
| case GradientOrientation.TlBr: | ||
| return GradientDrawable.Orientation.TlBr; | ||
| default: | ||
| return GradientDrawable.Orientation.LeftRight; | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| using System; | ||
| using System.ComponentModel; | ||
| using System.Linq; | ||
| using AiForms.Effects; | ||
| using AiForms.Effects.iOS; | ||
| using CoreAnimation; | ||
| using CoreGraphics; | ||
| using UIKit; | ||
| using Xamarin.Forms; | ||
| using Xamarin.Forms.Platform.iOS; | ||
|
|
||
| [assembly: ExportEffect(typeof(GradientPlatformEffect), nameof(Gradient))] | ||
| namespace AiForms.Effects.iOS | ||
| { | ||
| public class GradientPlatformEffect:PlatformEffect | ||
| { | ||
| UIView _view; | ||
| VisualElement _visualElement; | ||
| CAGradientLayer _layer; | ||
| bool _clipsToBounds; | ||
|
|
||
| protected override void OnAttached() | ||
| { | ||
| _view = Control ?? Container; | ||
| _visualElement = Element as VisualElement; | ||
| if(_visualElement == null) | ||
| { | ||
| Device.BeginInvokeOnMainThread(() => Gradient.SetOn(Element, false)); | ||
| return; | ||
| } | ||
|
|
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| if (Element is Label) | ||
| { | ||
| _view = Container; | ||
| } | ||
|
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| _clipsToBounds = _view.ClipsToBounds; | ||
| _visualElement.SizeChanged += OnSizeChanged; | ||
| UpdateGradient(); | ||
| } | ||
|
|
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| protected override void OnDetached() | ||
| { | ||
| if(_visualElement != null) | ||
| { | ||
| _visualElement.SizeChanged -= OnSizeChanged; | ||
| } | ||
|
|
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| if(_view != null) | ||
| { | ||
| _view.ClipsToBounds = _clipsToBounds; | ||
| } | ||
|
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| _layer?.RemoveFromSuperLayer(); | ||
| _layer?.Dispose(); | ||
| _layer = null; | ||
|
|
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| _view = null; | ||
| _visualElement = null; | ||
|
|
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| System.Diagnostics.Debug.WriteLine($"Detached {GetType().Name} from {Element.GetType().FullName}"); | ||
| } | ||
|
|
||
| protected override void OnElementPropertyChanged(PropertyChangedEventArgs args) | ||
| { | ||
| base.OnElementPropertyChanged(args); | ||
| if(args.PropertyName == Gradient.ColorsProperty.PropertyName || | ||
| args.PropertyName == Gradient.OrientationProperty.PropertyName) | ||
| { | ||
| UpdateGradient(); | ||
| } | ||
| } | ||
|
|
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| private void OnSizeChanged(object sender, EventArgs e) | ||
| { | ||
| UpdateGradient(); | ||
| } | ||
|
|
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| void UpdateGradient() | ||
| { | ||
| var colors = Gradient.GetColors(Element); | ||
| if(colors == null) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| _layer?.RemoveFromSuperLayer(); | ||
| _layer?.Dispose(); | ||
|
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| _layer = new CAGradientLayer(); | ||
| _layer.Frame = new CGRect(0, 0, _visualElement.Width, _visualElement.Height); | ||
| _layer.Colors = colors.Select(x => x.ToCGColor()).ToArray(); | ||
| (_layer.StartPoint,_layer.EndPoint) = ConvertPoint(); | ||
| _view.Layer.InsertSublayer(_layer, 0); | ||
| _view.ClipsToBounds = true; | ||
| } | ||
|
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| (CGPoint start,CGPoint end) ConvertPoint() | ||
| { | ||
| var orientation = Gradient.GetOrientation(Element); | ||
|
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| switch(orientation) | ||
| { | ||
| case GradientOrientation.LeftRight: | ||
| return (new CGPoint(0, 0.5), new CGPoint(1, 0.5)); | ||
| case GradientOrientation.BlTr: | ||
| return (new CGPoint(0, 1.0), new CGPoint(1, 0)); | ||
| case GradientOrientation.BottomTop: | ||
| return (new CGPoint(0.5, 1), new CGPoint(0.5, 0)); | ||
| case GradientOrientation.BrTl: | ||
| return (new CGPoint(1, 1), new CGPoint(0, 0)); | ||
| case GradientOrientation.RightLeft: | ||
| return (new CGPoint(1, 0.5), new CGPoint(0, 0.5)); | ||
| case GradientOrientation.TrBl: | ||
| return (new CGPoint(1, 0), new CGPoint(0, 1)); | ||
| case GradientOrientation.TopBottom: | ||
| return (new CGPoint(0.5, 0), new CGPoint(0.5, 1)); | ||
| case GradientOrientation.TlBr: | ||
| return (new CGPoint(0, 0), new CGPoint(1, 1)); | ||
| default: | ||
| return (new CGPoint(0, 0.5), new CGPoint(1, 0.5)); | ||
| } | ||
| } | ||
| } | ||
| } |
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