Add support for rendering drop shadows #2142
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matthewcheok
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Aug 15, 2023
calda
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Aug 15, 2023
| // - `softness=50` roughly corresponds to `cornerRadius=6.25` | ||
| // This could probably be improved with more examples. | ||
| let x = softnessValue.cgFloatValue | ||
| let cornerRadiusMapping = (-0.003 * pow(x, 2)) + (0.281 * x) |
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Worked with Remington to get this to match the preview in After Effects. For example:
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This was the only mapping I could find that we thought looked right in both of these cases
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ptal @thedrick |
thedrick
approved these changes
Aug 22, 2023
| static var shadowOffset: LayerProperty<CGSize> { | ||
| .init( | ||
| caLayerKeypath: #keyPath(CALayer.shadowOffset), | ||
| defaultValue: CGSize(width: 0, height: -3.0), |
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why does this and shadowRadius have non-zero default values?
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This is the default value of the CALayer.shadowOffset property (documentation):
The default value of this property is
(0.0, -3.0).
Knowing this value lets us apply certain optimizations in the code that generates the CAKeyframes. (e.g. if the Lottie animation just sets the property to the default value, we can completely omit the keyframes and reduce the overhead of computing the keyframes)
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ah great, this might be a good comment to add in code here so others aren't confused in the future!
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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [airbnb/lottie-spm](https://togithub.com/airbnb/lottie-spm) | minor | `from: "4.2.0"` -> `from: "4.3.0"` | --- ### Release Notes <details> <summary>airbnb/lottie-spm (airbnb/lottie-spm)</summary> ### [`v4.3.0`](https://togithub.com/airbnb/lottie-spm/releases/tag/4.3.0) [Compare Source](https://togithub.com/airbnb/lottie-spm/compare/4.2.0...4.3.0) **Lottie 4.3.0** adds many new features, including: - Official support for SwiftUI! - A public Core Animation `CALayer` subclass - Support for reduced motion - Support for drop shadow layer effects - Support for visionOS in the lottie-ios repo You can learn more about Lottie 4.3.0 in this announcement: **[Lottie 4.3.0 now available, with official support for SwiftUI #​2189](https://togithub.com/airbnb/lottie-ios/discussions/2189)** #### New Features - Add SwiftUI `LottieView`, which wraps UIKit `LottieAnimationView` - Add SwiftUI `LottieSwitch`, which wraps UIKit `AnimatedSwitch` ([airbnb/lottie-ios#2138) - Add SwiftUI `LottieButton`, which wraps `AnimatedButton` ([airbnb/lottie-ios#2139) - `AnimatedSwitch` and `AnimatedButton` now support macOS ([airbnb/lottie-ios#2138, [airbnb/lottie-ios#2139) - Add `LottieAnimationLayer`, a Core Animation `CALayer` subclass for playing Lottie animations ([airbnb/lottie-ios#2073) - Add support for rendering drop shadow layer effects ([airbnb/lottie-ios#2142) - Add API for playing multiple markers sequentially ([airbnb/lottie-ios#2084) - Play "reduced motion" marker if `UIAccessibility.isReduceMotionEnabled` is true ([airbnb/lottie-ios#2110) - Update text provider API to use full `AnimationKeypath` values ([airbnb/lottie-ios#2183) - Add support for visionOS to lottie-ios repo ([airbnb/lottie-ios#2152) - Drop support for Swift 5.5 ([airbnb/lottie-ios#2152) - Add contents gravity configuration to `AnimationImageProvider` ([airbnb/lottie-ios#2177) - Add support for customizing stroke width values using `FloatValueProvider` ([airbnb/lottie-ios#2179) - Adopt `Sendable` to support using Lottie with strict concurrency enabled ([airbnb/lottie-ios#2126) - Add `LottiePlaybackMode` to support declarative playback configuration ([airbnb/lottie-ios#2128) - Add option make main thread rendering engine force display update on every frame ([airbnb/lottie-ios#2168) - Add a option to prevent caching images from `AnimationImageProvider` ([airbnb/lottie-ios#2171) - Add support for customizing gradient values using `GradientValueProvider` ([airbnb/lottie-ios#2182) - Added additional support for multiple animations in `DotLottieFile` ([airbnb/lottie-ios#2074) - Add helper method to initialize `DotLottieFile` with data ([airbnb/lottie-ios#2090) #### Bug fixes - Remove `.../ZipFoundation/README.md` from targets and `*.md*` files from podspec ([airbnb/lottie-ios#2057 - Fix issue where layers with negative X scale values could be pixelated ([airbnb/lottie-ios#2067) - Fix warnings when building with Swift 5.9 ([airbnb/lottie-ios#2072) - Restructure `ValueProviderStore` to not accumulate multiple values for the same key ([airbnb/lottie-ios#2082) - Disable bitcode when building XCFramework ([airbnb/lottie-ios#2121) - Fix unhandled file warning when building with SPM ([airbnb/lottie-ios#213) - Fix support for customizing color of `SolidLayer` using `ColorValueProvider` ([airbnb/lottie-ios#2154) - Fix issue where shape items could be unexpectedly ignored ([airbnb/lottie-ios#2156) - Fix issue where skew keyframes would unexpectedly not animate ([airbnb/lottie-ios#2157) - Fix issue where value providers could be ignored when falling back to main thread rendering engine ([airbnb/lottie-ios#2164) Thanks to everyone who contributed to this release! </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://togithub.com/renovatebot/renovate/discussions) if that's undesired. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi45My4wIiwidXBkYXRlZEluVmVyIjoiMzYuOTMuMCIsInRhcmdldEJyYW5jaCI6Im1haW4ifQ==--> Co-authored-by: Self-hosted Renovate Bot <361546+cgrindel-self-hosted-renovate[bot]@users.noreply.github.enterprise.com>
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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [airbnb/lottie-spm](https://togithub.com/airbnb/lottie-spm) | patch | `from: "4.3.0"` -> `from: "4.3.1"` | --- ### Release Notes <details> <summary>airbnb/lottie-spm (airbnb/lottie-spm)</summary> ### [`v4.3.1`](https://togithub.com/airbnb/lottie-spm/releases/tag/4.3.1) [Compare Source](https://togithub.com/airbnb/lottie-spm/compare/4.3.0...4.3.1) **Lottie 4.3.0** adds many new features, including: - Official support for SwiftUI! - A public Core Animation `CALayer` subclass - Support for reduced motion - Support for drop shadow layer effects - Support for visionOS You can learn more about Lottie 4.3.0 in this announcement: **[Lottie 4.3.0 now available, with official support for SwiftUI #​2189](https://togithub.com/airbnb/lottie-ios/discussions/2189)** Lottie 4.3.1 fixes a small regression introduced by 4.3.0: [airbnb/lottie-ios#2193 #### New Features - Add SwiftUI `LottieView`, which wraps UIKit `LottieAnimationView` - Add SwiftUI `LottieSwitch`, which wraps UIKit `AnimatedSwitch` ([airbnb/lottie-ios#2138) - Add SwiftUI `LottieButton`, which wraps `AnimatedButton` ([airbnb/lottie-ios#2139) - `AnimatedSwitch` and `AnimatedButton` now support macOS ([airbnb/lottie-ios#2138, [airbnb/lottie-ios#2139) - Add `LottieAnimationLayer`, a Core Animation `CALayer` subclass for playing Lottie animations ([airbnb/lottie-ios#2073) - Add support for rendering drop shadow layer effects ([airbnb/lottie-ios#2142) - Add API for playing multiple markers sequentially ([airbnb/lottie-ios#2084) - Play "reduced motion" marker if `UIAccessibility.isReduceMotionEnabled` is true ([airbnb/lottie-ios#2110) - Update text provider API to use full `AnimationKeypath` values ([airbnb/lottie-ios#2183) - Add support for visionOS ([airbnb/lottie-ios#2152) - Drop support for Swift 5.5 ([airbnb/lottie-ios#2152) - Add contents gravity configuration to `AnimationImageProvider` ([airbnb/lottie-ios#2177) - Add support for customizing stroke width values using `FloatValueProvider` ([airbnb/lottie-ios#2179) - Adopt `Sendable` to support using Lottie with strict concurrency enabled ([airbnb/lottie-ios#2126) - Add `LottiePlaybackMode` to support declarative playback configuration ([airbnb/lottie-ios#2128) - Add option make main thread rendering engine force display update on every frame ([airbnb/lottie-ios#2168) - Add a option to prevent caching images from `AnimationImageProvider` ([airbnb/lottie-ios#2171) - Add support for customizing gradient values using `GradientValueProvider` ([airbnb/lottie-ios#2182) - Added additional support for multiple animations in `DotLottieFile` ([airbnb/lottie-ios#2074) - Add helper method to initialize `DotLottieFile` with data ([airbnb/lottie-ios#2090) #### Bug fixes - Remove `.../ZipFoundation/README.md` from targets and `*.md*` files from podspec ([airbnb/lottie-ios#2057 - Fix issue where layers with negative X scale values could be pixelated ([airbnb/lottie-ios#2067) - Fix warnings when building with Swift 5.9 ([airbnb/lottie-ios#2072) - Restructure `ValueProviderStore` to not accumulate multiple values for the same key ([airbnb/lottie-ios#2082) - Disable bitcode when building XCFramework ([airbnb/lottie-ios#2121) - Fix unhandled file warning when building with SPM ([airbnb/lottie-ios#213) - Fix support for customizing color of `SolidLayer` using `ColorValueProvider` ([airbnb/lottie-ios#2154) - Fix issue where shape items could be unexpectedly ignored ([airbnb/lottie-ios#2156) - Fix issue where skew keyframes would unexpectedly not animate ([airbnb/lottie-ios#2157) - Fix issue where value providers could be ignored when falling back to main thread rendering engine ([airbnb/lottie-ios#2164) Thanks to everyone who contributed to this release! </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://togithub.com/renovatebot/renovate/discussions) if that's undesired. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi4xMDAuMCIsInVwZGF0ZWRJblZlciI6IjM2LjEwMC4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> Co-authored-by: Self-hosted Renovate Bot <361546+cgrindel-self-hosted-renovate[bot]@users.noreply.github.enterprise.com>
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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [airbnb/lottie-spm](https://togithub.com/airbnb/lottie-spm) | patch | `from: "4.3.1"` -> `from: "4.3.2"` | --- ### Release Notes <details> <summary>airbnb/lottie-spm (airbnb/lottie-spm)</summary> ### [`v4.3.2`](https://togithub.com/airbnb/lottie-spm/releases/tag/4.3.2) [Compare Source](https://togithub.com/airbnb/lottie-spm/compare/4.3.1...4.3.2) **Lottie 4.3.0** adds many new features, including: - Official support for SwiftUI! - A public Core Animation `CALayer` subclass - Support for reduced motion - Support for drop shadow layer effects - Support for visionOS in the lottie-ios rep You can learn more about Lottie 4.3.0 in this announcement: **[Lottie 4.3.0 now available, with official support for SwiftUI #​2189](https://togithub.com/airbnb/lottie-ios/discussions/2189)** #### Lottie 4.3.2 Lottie 4.3.2 redesigns the `LottiePlaybackMode` playback APIs that were introduced in Lottie 4.3.0. ##### Before ```swift // Loop from 0.5 to 1.0 LottieView(animation: myAnimation) .play(.fromProgress(0.5, toProgress: 1.0, loopMode: .loop)) // Pause at the halfway point of the animation LottieView(animation: myAnimation) .play(.progress(0.5)) ``` ##### After ```swift // Loop from 0.5 to 1.0 LottieView(animation: myAnimation) .playing(.fromProgress(0.5, toProgress: 1.0, loopMode: .loop)) // Pause at the halfway point of the animation LottieView(animation: myAnimation) .paused(at: .progress(0.5)) ``` #### New Features in Lottie 4.3.0 - Add SwiftUI `LottieView`, which wraps UIKit `LottieAnimationView` - Add SwiftUI `LottieSwitch`, which wraps UIKit `AnimatedSwitch` ([airbnb/lottie-ios#2138) - Add SwiftUI `LottieButton`, which wraps `AnimatedButton` ([airbnb/lottie-ios#2139) - `AnimatedSwitch` and `AnimatedButton` now support macOS ([airbnb/lottie-ios#2138, [airbnb/lottie-ios#2139) - Add `LottieAnimationLayer`, a Core Animation `CALayer` subclass for playing Lottie animations ([airbnb/lottie-ios#2073) - Add support for rendering drop shadow layer effects ([airbnb/lottie-ios#2142) - Add API for playing multiple markers sequentially ([airbnb/lottie-ios#2084) - Play "reduced motion" marker if `UIAccessibility.isReduceMotionEnabled` is true ([airbnb/lottie-ios#2110) - Update text provider API to use full `AnimationKeypath` values ([airbnb/lottie-ios#2183) - Add support for visionOS ([airbnb/lottie-ios#2152) - Drop support for Swift 5.5 ([airbnb/lottie-ios#2152) - Add contents gravity configuration to `AnimationImageProvider` ([airbnb/lottie-ios#2177) - Add support for customizing stroke width values using `FloatValueProvider` ([airbnb/lottie-ios#2179) - Adopt `Sendable` to support using Lottie with strict concurrency enabled ([airbnb/lottie-ios#2126) - Add `LottiePlaybackMode` to support declarative playback configuration ([airbnb/lottie-ios#2128) - Add option make main thread rendering engine force display update on every frame ([airbnb/lottie-ios#2168) - Add a option to prevent caching images from `AnimationImageProvider` ([airbnb/lottie-ios#2171) - Add support for customizing gradient values using `GradientValueProvider` ([airbnb/lottie-ios#2182) - Added additional support for multiple animations in `DotLottieFile` ([airbnb/lottie-ios#2074) - Add helper method to initialize `DotLottieFile` with data ([airbnb/lottie-ios#2090) #### Bug fixes - Remove `.../ZipFoundation/README.md` from targets and `*.md*` files from podspec ([airbnb/lottie-ios#2057 - Fix issue where layers with negative X scale values could be pixelated ([airbnb/lottie-ios#2067) - Fix warnings when building with Swift 5.9 ([airbnb/lottie-ios#2072) - Restructure `ValueProviderStore` to not accumulate multiple values for the same key ([airbnb/lottie-ios#2082) - Disable bitcode when building XCFramework ([airbnb/lottie-ios#2121) - Fix unhandled file warning when building with SPM ([airbnb/lottie-ios#213) - Fix support for customizing color of `SolidLayer` using `ColorValueProvider` ([airbnb/lottie-ios#2154) - Fix issue where shape items could be unexpectedly ignored ([airbnb/lottie-ios#2156) - Fix issue where skew keyframes would unexpectedly not animate ([airbnb/lottie-ios#2157) - Fix issue where value providers could be ignored when falling back to main thread rendering engine ([airbnb/lottie-ios#2164) Thanks to everyone who contributed to this release! </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [airbnb/lottie-spm](https://togithub.com/airbnb/lottie-spm) | patch | `from: "4.3.2"` -> `from: "4.3.3"` | --- ### Release Notes <details> <summary>airbnb/lottie-spm (airbnb/lottie-spm)</summary> ### [`v4.3.3`](https://togithub.com/airbnb/lottie-spm/releases/tag/4.3.3) [Compare Source](https://togithub.com/airbnb/lottie-spm/compare/4.3.2...4.3.3) **Lottie 4.3.0** adds many new features, including: - Official support for SwiftUI! - A public Core Animation `CALayer` subclass - Support for reduced motion - Support for drop shadow layer effects - Support for visionOS You can learn more about Lottie 4.3.0 in this announcement: **[Lottie 4.3.0 now available, with official support for SwiftUI #​2189](https://togithub.com/airbnb/lottie-ios/discussions/2189)** Lottie 4.3.3 fixes a regression introduced by Lottie 4.3.0 where the contents of a `LottieAnimationView` could crossfade / animate unexpectedly when updating the current `LottieAnimation` or rendering engine: [airbnb/lottie-ios#2200 #### New Features in Lottie 4.3.0 - Add SwiftUI `LottieView`, which wraps UIKit `LottieAnimationView` - Add SwiftUI `LottieSwitch`, which wraps UIKit `AnimatedSwitch` ([airbnb/lottie-ios#2138) - Add SwiftUI `LottieButton`, which wraps `AnimatedButton` ([airbnb/lottie-ios#2139) - `AnimatedSwitch` and `AnimatedButton` now support macOS ([airbnb/lottie-ios#2138, [airbnb/lottie-ios#2139) - Add `LottieAnimationLayer`, a Core Animation `CALayer` subclass for playing Lottie animations ([airbnb/lottie-ios#2073) - Add support for rendering drop shadow layer effects ([airbnb/lottie-ios#2142) - Add API for playing multiple markers sequentially ([airbnb/lottie-ios#2084) - Play "reduced motion" marker if `UIAccessibility.isReduceMotionEnabled` is true ([airbnb/lottie-ios#2110) - Update text provider API to use full `AnimationKeypath` values ([airbnb/lottie-ios#2183) - Add support for visionOS ([airbnb/lottie-ios#2152) - Drop support for Swift 5.5 ([airbnb/lottie-ios#2152) - Add contents gravity configuration to `AnimationImageProvider` ([airbnb/lottie-ios#2177) - Add support for customizing stroke width values using `FloatValueProvider` ([airbnb/lottie-ios#2179) - Adopt `Sendable` to support using Lottie with strict concurrency enabled ([airbnb/lottie-ios#2126) - Add `LottiePlaybackMode` to support declarative playback configuration ([airbnb/lottie-ios#2128) - Add option make main thread rendering engine force display update on every frame ([airbnb/lottie-ios#2168) - Add a option to prevent caching images from `AnimationImageProvider` ([airbnb/lottie-ios#2171) - Add support for customizing gradient values using `GradientValueProvider` ([airbnb/lottie-ios#2182) - Added additional support for multiple animations in `DotLottieFile` ([airbnb/lottie-ios#2074) - Add helper method to initialize `DotLottieFile` with data ([airbnb/lottie-ios#2090) #### Bug fixes - Remove `.../ZipFoundation/README.md` from targets and `*.md*` files from podspec ([airbnb/lottie-ios#2057 - Fix issue where layers with negative X scale values could be pixelated ([airbnb/lottie-ios#2067) - Fix warnings when building with Swift 5.9 ([airbnb/lottie-ios#2072) - Restructure `ValueProviderStore` to not accumulate multiple values for the same key ([airbnb/lottie-ios#2082) - Disable bitcode when building XCFramework ([airbnb/lottie-ios#2121) - Fix unhandled file warning when building with SPM ([airbnb/lottie-ios#213) - Fix support for customizing color of `SolidLayer` using `ColorValueProvider` ([airbnb/lottie-ios#2154) - Fix issue where shape items could be unexpectedly ignored ([airbnb/lottie-ios#2156) - Fix issue where skew keyframes would unexpectedly not animate ([airbnb/lottie-ios#2157) - Fix issue where value providers could be ignored when falling back to main thread rendering engine ([airbnb/lottie-ios#2164) Thanks to everyone who contributed to this release! </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://togithub.com/renovatebot/renovate/discussions) if that's undesired. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi4xMDAuMCIsInVwZGF0ZWRJblZlciI6IjM2LjEwMC4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> Co-authored-by: Self-hosted Renovate Bot <361546+cgrindel-self-hosted-renovate[bot]@users.noreply.github.enterprise.com>
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This PR adds support for rendering drop shadows using the Core Animation rendering engine. Fixes #1169.
There are two different JSON schema representations for drop shadows. The most common option is the "layer effects" schema, but there's also a second "layer style" schema. This PR adds support for both.
DropShadowEffectDropShadowStyle