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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| using System; | ||
| // ReSharper disable CheckNamespace | ||
| namespace Avalonia.Media; | ||
|
|
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| public class BlurEffect : Effect, IBlurEffect, IMutableEffect | ||
| { | ||
| public static readonly StyledProperty<double> RadiusProperty = AvaloniaProperty.Register<BlurEffect, double>( | ||
| nameof(Radius), 5); | ||
|
|
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| public double Radius | ||
| { | ||
| get => GetValue(RadiusProperty); | ||
| set => SetValue(RadiusProperty, value); | ||
| } | ||
|
|
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| static BlurEffect() | ||
| { | ||
| AffectsRender<BlurEffect>(RadiusProperty); | ||
| } | ||
|
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| public IImmutableEffect ToImmutable() => new ImmutableBlurEffect(Radius); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| // ReSharper disable once CheckNamespace | ||
|
|
||
| using System; | ||
| // ReSharper disable CheckNamespace | ||
|
|
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| namespace Avalonia.Media; | ||
|
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| public abstract class DropShadowEffectBase : Effect | ||
| { | ||
| public static readonly StyledProperty<double> BlurRadiusProperty = | ||
| AvaloniaProperty.Register<DropShadowEffectBase, double>( | ||
| nameof(BlurRadius), 5); | ||
|
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| public double BlurRadius | ||
| { | ||
| get => GetValue(BlurRadiusProperty); | ||
| set => SetValue(BlurRadiusProperty, value); | ||
| } | ||
|
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| public static readonly StyledProperty<Color> ColorProperty = AvaloniaProperty.Register<DropShadowEffectBase, Color>( | ||
| nameof(Color)); | ||
|
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| public Color Color | ||
| { | ||
| get => GetValue(ColorProperty); | ||
| set => SetValue(ColorProperty, value); | ||
| } | ||
|
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| public static readonly StyledProperty<double> OpacityProperty = | ||
| AvaloniaProperty.Register<DropShadowEffectBase, double>( | ||
| nameof(Opacity), 1); | ||
|
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||
| public double Opacity | ||
| { | ||
| get => GetValue(OpacityProperty); | ||
| set => SetValue(OpacityProperty, value); | ||
| } | ||
|
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| static DropShadowEffectBase() | ||
| { | ||
| AffectsRender<DropShadowEffectBase>(BlurRadiusProperty, ColorProperty, OpacityProperty); | ||
| } | ||
| } | ||
|
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| public class DropShadowEffect : DropShadowEffectBase, IDropShadowEffect, IMutableEffect | ||
| { | ||
| public static readonly StyledProperty<double> OffsetXProperty = AvaloniaProperty.Register<DropShadowEffect, double>( | ||
| nameof(OffsetX), 3.5355); | ||
|
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| public double OffsetX | ||
| { | ||
| get => GetValue(OffsetXProperty); | ||
| set => SetValue(OffsetXProperty, value); | ||
| } | ||
|
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| public static readonly StyledProperty<double> OffsetYProperty = AvaloniaProperty.Register<DropShadowEffect, double>( | ||
| nameof(OffsetY), 3.5355); | ||
|
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| public double OffsetY | ||
| { | ||
| get => GetValue(OffsetYProperty); | ||
| set => SetValue(OffsetYProperty, value); | ||
| } | ||
|
|
||
| static DropShadowEffect() | ||
| { | ||
| AffectsRender<DropShadowEffect>(OffsetXProperty, OffsetYProperty); | ||
| } | ||
|
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| public IImmutableEffect ToImmutable() | ||
| { | ||
| return new ImmutableDropShadowEffect(OffsetX, OffsetY, BlurRadius, Color, Opacity); | ||
| } | ||
| } | ||
|
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||
| /// <summary> | ||
| /// This class is compatible with WPF's DropShadowEffect and provides Direction and ShadowDepth properties instead of OffsetX/OffsetY | ||
| /// </summary> | ||
| public class DropShadowDirectionEffect : DropShadowEffectBase, IDirectionDropShadowEffect, IMutableEffect | ||
| { | ||
| public static readonly StyledProperty<double> ShadowDepthProperty = | ||
| AvaloniaProperty.Register<DropShadowDirectionEffect, double>( | ||
| nameof(ShadowDepth), 5); | ||
|
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| public double ShadowDepth | ||
| { | ||
| get => GetValue(ShadowDepthProperty); | ||
| set => SetValue(ShadowDepthProperty, value); | ||
| } | ||
|
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| public static readonly StyledProperty<double> DirectionProperty = AvaloniaProperty.Register<DropShadowDirectionEffect, double>( | ||
| nameof(Direction), 315); | ||
|
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| public double Direction | ||
| { | ||
| get => GetValue(DirectionProperty); | ||
| set => SetValue(DirectionProperty, value); | ||
| } | ||
|
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| public double OffsetX => Math.Cos(Direction) * ShadowDepth; | ||
| public double OffsetY => Math.Sin(Direction) * ShadowDepth; | ||
|
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| public IImmutableEffect ToImmutable() => new ImmutableDropShadowDirectionEffect(OffsetX, OffsetY, BlurRadius, Color, Opacity); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| using System; | ||
| using Avalonia.Animation; | ||
| using Avalonia.Animation.Animators; | ||
| using Avalonia.Reactive; | ||
| using Avalonia.Rendering.Composition.Expressions; | ||
| using Avalonia.Utilities; | ||
|
|
||
| // ReSharper disable once CheckNamespace | ||
| namespace Avalonia.Media; | ||
|
|
||
| public class Effect : Animatable, IAffectsRender | ||
| { | ||
| /// <summary> | ||
| /// Marks a property as affecting the brush's visual representation. | ||
| /// </summary> | ||
| /// <param name="properties">The properties.</param> | ||
| /// <remarks> | ||
| /// After a call to this method in a brush's static constructor, any change to the | ||
| /// property will cause the <see cref="Invalidated"/> event to be raised on the brush. | ||
| /// </remarks> | ||
| protected static void AffectsRender<T>(params AvaloniaProperty[] properties) | ||
| where T : Effect | ||
| { | ||
| var invalidateObserver = new AnonymousObserver<AvaloniaPropertyChangedEventArgs>( | ||
| static e => (e.Sender as T)?.RaiseInvalidated(EventArgs.Empty)); | ||
|
|
||
| foreach (var property in properties) | ||
| { | ||
| property.Changed.Subscribe(invalidateObserver); | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Raises the <see cref="Invalidated"/> event. | ||
| /// </summary> | ||
| /// <param name="e">The event args.</param> | ||
| protected void RaiseInvalidated(EventArgs e) => Invalidated?.Invoke(this, e); | ||
|
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| /// <inheritdoc /> | ||
| public event EventHandler? Invalidated; | ||
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| static Exception ParseError(string s) => throw new ArgumentException("Unable to parse effect: " + s); | ||
| public static IEffect Parse(string s) | ||
| { | ||
| var span = s.AsSpan(); | ||
| var r = new TokenParser(span); | ||
| if (r.TryConsume("blur")) | ||
| { | ||
| if (!r.TryConsume('(') || !r.TryParseDouble(out var radius) || !r.TryConsume(')') || !r.IsEofWithWhitespace()) | ||
| throw ParseError(s); | ||
| return new ImmutableBlurEffect(radius); | ||
| } | ||
|
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| if (r.TryConsume("drop-shadow")) | ||
| { | ||
| if (!r.TryConsume('(') || !r.TryParseDouble(out var offsetX) | ||
| || !r.TryParseDouble(out var offsetY)) | ||
| throw ParseError(s); | ||
| double blurRadius = 0; | ||
| var color = Colors.Black; | ||
| if (!r.TryConsume(')')) | ||
| { | ||
| if (!r.TryParseDouble(out blurRadius) || blurRadius < 0) | ||
| throw ParseError(s); | ||
| if (!r.TryConsume(')')) | ||
| { | ||
| var endOfExpression = s.LastIndexOf(")", StringComparison.Ordinal); | ||
| if (endOfExpression == -1) | ||
| throw ParseError(s); | ||
|
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| if (!new TokenParser(span.Slice(endOfExpression + 1)).IsEofWithWhitespace()) | ||
| throw ParseError(s); | ||
|
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| if (!Color.TryParse(span.Slice(r.Position, endOfExpression - r.Position).TrimEnd(), out color)) | ||
| throw ParseError(s); | ||
| return new ImmutableDropShadowEffect(offsetX, offsetY, blurRadius, color, 1); | ||
| } | ||
| } | ||
| if (!r.IsEofWithWhitespace()) | ||
| throw ParseError(s); | ||
| return new ImmutableDropShadowEffect(offsetX, offsetY, blurRadius, color, 1); | ||
| } | ||
|
|
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| throw ParseError(s); | ||
| } | ||
|
|
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| static Effect() | ||
| { | ||
| EffectAnimator.EnsureRegistered(); | ||
| } | ||
| } |
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