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Add support for rounded corners to Main Thread rendering engine (#1795)
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81
Sources/Private/MainThread/NodeRenderSystem/Nodes/ModifierNodes/RoundedCornersNode.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // | ||
| // RoundedCornersNode.swift | ||
| // Lottie | ||
| // | ||
| // Created by Duolingo on 10/31/22. | ||
| // | ||
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| import Foundation | ||
| import QuartzCore | ||
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| // MARK: - RoundedCornersProperties | ||
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| final class RoundedCornersProperties: NodePropertyMap, KeypathSearchable { | ||
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| // MARK: Lifecycle | ||
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| init(roundedCorners: RoundedCorners) { | ||
| keypathName = roundedCorners.name | ||
| radius = NodeProperty(provider: KeyframeInterpolator(keyframes: roundedCorners.radius.keyframes)) | ||
| keypathProperties = ["Radius" : radius] | ||
| properties = Array(keypathProperties.values) | ||
| } | ||
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| // MARK: Internal | ||
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| let keypathProperties: [String: AnyNodeProperty] | ||
| let properties: [AnyNodeProperty] | ||
| let keypathName: String | ||
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| let radius: NodeProperty<LottieVector1D> | ||
| } | ||
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| // MARK: - RoundedCornersNode | ||
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| final class RoundedCornersNode: AnimatorNode { | ||
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| // MARK: Lifecycle | ||
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| init(parentNode: AnimatorNode?, roundedCorners: RoundedCorners, upstreamPaths: [PathOutputNode]) { | ||
| outputNode = PassThroughOutputNode(parent: parentNode?.outputNode) | ||
| self.parentNode = parentNode | ||
| properties = RoundedCornersProperties(roundedCorners: roundedCorners) | ||
| self.upstreamPaths = upstreamPaths | ||
| } | ||
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| // MARK: Internal | ||
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| let properties: RoundedCornersProperties | ||
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| let parentNode: AnimatorNode? | ||
| let outputNode: NodeOutput | ||
| var hasLocalUpdates = false | ||
| var hasUpstreamUpdates = false | ||
| var lastUpdateFrame: CGFloat? = nil | ||
| var isEnabled = true | ||
|
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| // MARK: Animator Node | ||
| var propertyMap: NodePropertyMap & KeypathSearchable { | ||
| properties | ||
| } | ||
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| func forceUpstreamOutputUpdates() -> Bool { | ||
| hasLocalUpdates || hasUpstreamUpdates | ||
| } | ||
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| func rebuildOutputs(frame: CGFloat) { | ||
| for pathContainer in upstreamPaths { | ||
| let pathObjects = pathContainer.removePaths(updateFrame: frame) | ||
| for path in pathObjects { | ||
| pathContainer.appendPath( | ||
| path.roundCorners( | ||
| radius: properties.radius.value.cgFloatValue), | ||
| updateFrame: frame) | ||
| } | ||
| } | ||
| } | ||
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| // MARK: Fileprivate | ||
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| fileprivate let upstreamPaths: [PathOutputNode] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // | ||
| // RoundedCorners.swift | ||
| // Lottie | ||
| // | ||
| // Created by Duolingo on 10/31/22. | ||
| // | ||
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| import Foundation | ||
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| // MARK: - RoundedCorners | ||
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| final class RoundedCorners: ShapeItem { | ||
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| // MARK: Lifecycle | ||
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| required init(from decoder: Decoder) throws { | ||
| let container = try decoder.container(keyedBy: RoundedCorners.CodingKeys.self) | ||
| radius = try | ||
| container.decode( | ||
| KeyframeGroup<LottieVector1D>.self, | ||
| forKey: .radius) | ||
| try super.init(from: decoder) | ||
| } | ||
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| required init(dictionary: [String: Any]) throws { | ||
| let radiusDictionary: [String: Any] = try dictionary.value(for: CodingKeys.radius) | ||
| radius = try KeyframeGroup<LottieVector1D>(dictionary: radiusDictionary) | ||
| try super.init(dictionary: dictionary) | ||
| } | ||
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| // MARK: Internal | ||
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| /// The radius of rounded corners | ||
| let radius: KeyframeGroup<LottieVector1D> | ||
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| override func encode(to encoder: Encoder) throws { | ||
| try super.encode(to: encoder) | ||
| var container = encoder.container(keyedBy: CodingKeys.self) | ||
| try container.encode(radius, forKey: .radius) | ||
| } | ||
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| // MARK: Private | ||
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| private enum CodingKeys: String, CodingKey { | ||
| case radius = "r" | ||
| } | ||
| } |
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