107 lines
2.6 KiB
Swift
107 lines
2.6 KiB
Swift
// Copyright 2021 Tokamak contributors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import Foundation
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public struct _ShadowEffect: EnvironmentalModifier, Equatable {
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public var color: Color
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public var radius: CGFloat
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public var offset: CGSize
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@inlinable
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init(
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color: Color,
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radius: CGFloat,
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offset: CGSize
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) {
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self.color = color
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self.radius = radius
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self.offset = offset
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}
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public func resolve(in environment: EnvironmentValues) -> _Resolved {
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.init(
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color: color.provider.resolve(in: environment),
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radius: radius,
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offset: offset
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)
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}
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public struct _Resolved: ViewModifier, Animatable {
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public var color: AnyColorBox.ResolvedValue
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public var radius: CGFloat
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public var offset: CGSize
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public func body(content: Content) -> some View {
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content
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}
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public typealias AnimatableData = AnimatablePair<
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AnimatablePair<
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Float,
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AnimatablePair<
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Float,
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AnimatablePair<Float, Float>
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>
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>,
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AnimatablePair<CGFloat, CGSize.AnimatableData>
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>
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public var animatableData: _Resolved.AnimatableData {
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get {
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.init(
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.init(
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Float(color.red),
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.init(
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Float(color.green),
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.init(
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Float(color.blue),
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Float(color.opacity)
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)
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)
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),
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.init(radius, offset.animatableData)
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)
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}
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set {
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color = .init(
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red: Double(newValue[].0[].0),
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green: Double(newValue[].0[].1[].0),
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blue: Double(newValue[].0[].1[].1[].0),
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opacity: Double(newValue[].0[].1[].1[].1),
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space: .sRGB
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)
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(radius, offset.animatableData) = newValue[].1[]
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}
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}
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}
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}
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public extension View {
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@inlinable
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func shadow(
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color: Color = Color(.sRGBLinear, white: 0, opacity: 0.33),
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radius: CGFloat,
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x: CGFloat = 0,
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y: CGFloat = 0
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) -> some View {
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modifier(
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_ShadowEffect(
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color: color,
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radius: radius,
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offset: .init(width: x, height: y)
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)
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)
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}
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}
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