GLEGram 12.5 — Initial public release

Based on Swiftgram 12.5 (Telegram iOS 12.5).
All GLEGram features ported and organized in GLEGram/ folder.

Features: Ghost Mode, Saved Deleted Messages, Content Protection Bypass,
Font Replacement, Fake Profile, Chat Export, Plugin System, and more.

See CHANGELOG_12.5.md for full details.

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.cpp

@@ -0,0 +1,17 @@
+#include "CompositionLayer.hpp"
+
+namespace lottie {
+
+InvertedMatteLayer::InvertedMatteLayer(std::shared_ptr<CompositionLayer> inputMatte) :
+_inputMatte(inputMatte) {
+    setSize(inputMatte->size());
+    
+    addSublayer(_inputMatte);
+}
+
+std::shared_ptr<InvertedMatteLayer> makeInvertedMatteLayer(std::shared_ptr<CompositionLayer> compositionLayer) {
+    auto result = std::make_shared<InvertedMatteLayer>(compositionLayer);
+    return result;
+}
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.hpp

@@ -0,0 +1,201 @@
+#ifndef CompositionLayer_hpp
+#define CompositionLayer_hpp
+
+#include <LottieCpp/Vectors.h>
+#include "Lottie/Public/Primitives/CALayer.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/NodeProperties/Protocols/KeypathSearchable.hpp"
+#include "Lottie/Private/Model/Layers/LayerModel.hpp"
+#include "Lottie/Private/MainThread/LayerContainers/Utility/LayerTransformNode.hpp"
+#include "Lottie/Private/MainThread/LayerContainers/CompLayers/MaskContainerLayer.hpp"
+
+#include <memory>
+
+namespace lottie {
+
+class CompositionLayer;
+class InvertedMatteLayer;
+
+/// A layer that inverses the alpha output of its input layer.
+class InvertedMatteLayer: public CALayer {
+public:
+    InvertedMatteLayer(std::shared_ptr<CompositionLayer> inputMatte);
+    
+    std::shared_ptr<CompositionLayer> _inputMatte;
+    
+    virtual bool isInvertedMatte() const override {
+        return true;
+    }
+};
+
+std::shared_ptr<InvertedMatteLayer> makeInvertedMatteLayer(std::shared_ptr<CompositionLayer> compositionLayer);
+
+/// The base class for a child layer of CompositionContainer
+class CompositionLayer: public CALayer, public KeypathSearchable {
+public:
+    CompositionLayer(std::shared_ptr<LayerModel> const &layer, Vector2D size) {
+        _contentsLayer = std::make_shared<CALayer>();
+        
+        _transformNode = std::make_shared<LayerTransformNode>(layer->transform);
+        
+        if (layer->masks.has_value()) {
+            _maskLayer = std::make_shared<MaskContainerLayer>(layer->masks.value());
+        } else {
+            _maskLayer = nullptr;
+        }
+        
+        _matteType = layer->matte;
+        
+        _inFrame = layer->inFrame;
+        _outFrame = layer->outFrame;
+        _timeStretch = layer->timeStretch();
+        _startFrame = layer->startTime;
+        if (layer->name.has_value()) {
+            _keypathName = layer->name.value();
+        } else {
+            _keypathName = "Layer";
+        }
+        
+        _childKeypaths.push_back(_transformNode->transformProperties());
+        
+        _contentsLayer->setSize(size);
+        
+        if (layer->blendMode.has_value() && layer->blendMode.value() != BlendMode::Normal) {
+            setCompositingFilter(layer->blendMode);
+        }
+        
+        addSublayer(_contentsLayer);
+        
+        if (_maskLayer) {
+            _contentsLayer->setMask(_maskLayer);
+        }
+    }
+    
+    virtual std::string keypathName() const override {
+        return _keypathName;
+    }
+    
+    virtual std::map<std::string, std::shared_ptr<AnyNodeProperty>> keypathProperties() const override {
+        return {};
+    }
+    
+    virtual std::shared_ptr<CALayer> keypathLayer() const override {
+        return _contentsLayer;
+    }
+    
+    void displayWithFrame(float frame, bool forceUpdates, BezierPathsBoundingBoxContext &boundingBoxContext) {
+        bool layerVisible = isInRangeOrEqual(frame, _inFrame, _outFrame);
+        
+        if (_transformNode->updateTree(frame, forceUpdates) || _contentsLayer->isHidden() != !layerVisible) {
+            _contentsLayer->setTransform(_transformNode->globalTransform());
+            _contentsLayer->setOpacity(_transformNode->opacity());
+            _contentsLayer->setIsHidden(!layerVisible);
+            
+            updateContentsLayerParameters();
+        }
+        
+        /// Only update contents if current time is within the layers time bounds.
+        if (layerVisible) {
+            displayContentsWithFrame(frame, forceUpdates, boundingBoxContext);
+            if (_maskLayer) {
+                _maskLayer->updateWithFrame(frame, forceUpdates);
+            }
+        }
+    }
+    
+    virtual void updateContentsLayerParameters() {
+    }
+    
+    virtual void displayContentsWithFrame(float frame, bool forceUpdates, BezierPathsBoundingBoxContext &boundingBoxContext) {
+        /// To be overridden by subclass
+    }
+    
+    
+    virtual std::vector<std::shared_ptr<KeypathSearchable>> const &childKeypaths() const override {
+        return _childKeypaths;
+    }
+    
+    std::shared_ptr<CompositionLayer> _matteLayer;
+    void setMatteLayer(std::shared_ptr<CompositionLayer> matteLayer) {
+        _matteLayer = matteLayer;
+        if (matteLayer) {
+            if (_matteType.has_value() && _matteType.value() == MatteType::Invert) {
+                setMask(makeInvertedMatteLayer(matteLayer));
+            } else {
+                setMask(matteLayer);
+            }
+        } else {
+            setMask(nullptr);
+        }
+    }
+    
+    std::shared_ptr<CALayer> const &contentsLayer() const {
+        return _contentsLayer;
+    }
+    
+    std::shared_ptr<MaskContainerLayer> const &maskLayer() const {
+        return _maskLayer;
+    }
+    void setMaskLayer(std::shared_ptr<MaskContainerLayer> const &maskLayer) {
+        _maskLayer = maskLayer;
+    }
+    
+    std::optional<MatteType> const &matteType() const {
+        return _matteType;
+    }
+    
+    float inFrame() const {
+        return _inFrame;
+    }
+    float outFrame() const {
+        return _outFrame;
+    }
+    float startFrame() const {
+        return _startFrame;
+    }
+    float timeStretch() const {
+        return _timeStretch;
+    }
+    
+    virtual std::shared_ptr<RenderTreeNode> renderTreeNode(BezierPathsBoundingBoxContext &boundingBoxContext) {
+        return nullptr;
+    }
+    
+public:
+    std::shared_ptr<LayerTransformNode> const transformNode() const {
+        return _transformNode;
+    }
+    
+protected:
+    std::shared_ptr<CALayer> _contentsLayer;
+    std::optional<MatteType> _matteType;
+    
+private:
+    std::shared_ptr<LayerTransformNode> _transformNode;
+    
+    std::shared_ptr<MaskContainerLayer> _maskLayer;
+    
+    float _inFrame = 0.0;
+    float _outFrame = 0.0;
+    float _startFrame = 0.0;
+    float _timeStretch = 0.0;
+    
+    // MARK: Keypath Searchable
+    
+    std::string _keypathName;
+    
+public:
+    virtual bool isImageCompositionLayer() const {
+        return false;
+    }
+    
+    virtual bool isTextCompositionLayer() const {
+        return false;
+    }
+    
+protected:
+    std::vector<std::shared_ptr<KeypathSearchable>> _childKeypaths;
+};
+
+}
+
+#endif /* CompositionLayer_hpp */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/ImageCompositionLayer.cpp

@@ -0,0 +1,5 @@
+#include "ImageCompositionLayer.hpp"
+
+namespace lottie {
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/ImageCompositionLayer.hpp

@@ -0,0 +1,43 @@
+#ifndef ImageCompositionLayer_hpp
+#define ImageCompositionLayer_hpp
+
+#include "Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.hpp"
+#include "Lottie/Private/Model/Assets/ImageAsset.hpp"
+#include "Lottie/Private/Model/Layers/ImageLayerModel.hpp"
+
+namespace lottie {
+
+class ImageCompositionLayer: public CompositionLayer {
+public:
+    ImageCompositionLayer(std::shared_ptr<ImageLayerModel> const &imageLayer, Vector2D const &size) :
+    CompositionLayer(imageLayer, size) {
+        _imageReferenceID = imageLayer->referenceID;
+        
+        contentsLayer()->setMasksToBounds(true);
+    }
+    
+    std::shared_ptr<Image> image() {
+        return _image;
+    }
+    void setImage(std::shared_ptr<Image> image) {
+        _image = image;
+        //contentsLayer()->setContents(image);
+    }
+    
+    std::string const &imageReferenceID() {
+        return _imageReferenceID;
+    }
+    
+public:
+    virtual bool isImageCompositionLayer() const override {
+        return true;
+    }
+    
+private:
+    std::string _imageReferenceID;
+    std::shared_ptr<Image> _image;
+};
+
+}
+
+#endif /* ImageCompositionLayer_hpp */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/MaskContainerLayer.cpp

@@ -0,0 +1,5 @@
+#include "MaskContainerLayer.hpp"
+
+namespace lottie {
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/MaskContainerLayer.hpp

@@ -0,0 +1,178 @@
+#ifndef MaskContainerLayer_hpp
+#define MaskContainerLayer_hpp
+
+#include "Lottie/Private/Model/Objects/Mask.hpp"
+#include "Lottie/Public/Primitives/CALayer.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/NodeProperties/Protocols/NodePropertyMap.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/NodeProperties/NodeProperty.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/NodeProperties/ValueProviders/KeyframeInterpolator.hpp"
+
+namespace lottie {
+
+inline MaskMode usableMaskMode(MaskMode mode) {
+    switch (mode) {
+        case MaskMode::Add:
+            return MaskMode::Add;
+        case MaskMode::Subtract:
+            return MaskMode::Subtract;
+        case MaskMode::Intersect:
+            return MaskMode::Intersect;
+        case MaskMode::Lighten:
+            return MaskMode::Add;
+        case MaskMode::Darken:
+            return MaskMode::Darken;
+        case MaskMode::Difference:
+            return MaskMode::Intersect;
+        case MaskMode::None:
+            return MaskMode::None;
+    }
+}
+
+class MaskNodeProperties: public NodePropertyMap {
+public:
+    MaskNodeProperties(std::shared_ptr<Mask> const &mask) :
+    _mode(mask->mode()),
+    _inverted(mask->inverted) {
+        _opacity = std::make_shared<NodeProperty<Vector1D>>(std::make_shared<KeyframeInterpolator<Vector1D>>(mask->opacity->keyframes));
+        _shape = std::make_shared<NodeProperty<BezierPath>>(std::make_shared<KeyframeInterpolator<BezierPath>>(mask->shape.keyframes));
+        _expansion = std::make_shared<NodeProperty<Vector1D>>(std::make_shared<KeyframeInterpolator<Vector1D>>(mask->expansion->keyframes));
+        
+        _propertyMap.insert(std::make_pair("Opacity", _opacity));
+        _propertyMap.insert(std::make_pair("Shape", _shape));
+        _propertyMap.insert(std::make_pair("Expansion", _expansion));
+        
+        for (const auto &it : _propertyMap) {
+            _properties.push_back(it.second);
+        }
+    }
+    
+    virtual std::vector<std::shared_ptr<AnyNodeProperty>> &properties() override {
+        return _properties;
+    }
+    
+    virtual std::vector<std::shared_ptr<KeypathSearchable>> const &childKeypaths() const override {
+        return _childKeypaths;
+    }
+    
+    std::shared_ptr<NodeProperty<Vector1D>> const &opacity() const {
+        return _opacity;
+    }
+    
+    std::shared_ptr<NodeProperty<BezierPath>> const &shape() const {
+        return _shape;
+    }
+    
+    std::shared_ptr<NodeProperty<Vector1D>> const &expansion() const {
+        return _expansion;
+    }
+    
+    MaskMode mode() const {
+        return _mode;
+    }
+    
+    bool inverted() const {
+        return _inverted;
+    }
+    
+private:
+    std::map<std::string, std::shared_ptr<AnyNodeProperty>> _propertyMap;
+    std::vector<std::shared_ptr<KeypathSearchable>> _childKeypaths;
+    
+    std::vector<std::shared_ptr<AnyNodeProperty>> _properties;
+    
+    MaskMode _mode = MaskMode::Add;
+    bool _inverted = false;
+    
+    std::shared_ptr<NodeProperty<Vector1D>> _opacity;
+    std::shared_ptr<NodeProperty<BezierPath>> _shape;
+    std::shared_ptr<NodeProperty<Vector1D>> _expansion;
+};
+
+class MaskLayer: public CALayer {
+public:
+    MaskLayer(std::shared_ptr<Mask> const &mask) :
+    _properties(mask) {
+        /*_maskLayer = std::make_shared<CAShapeLayer>();
+        
+        addSublayer(_maskLayer);
+        
+        if (mask->mode() == MaskMode::Add) {
+            _maskLayer->setFillColor(Color(1.0, 0.0, 0.0, 1.0));
+        } else {
+            _maskLayer->setFillColor(Color(0.0, 1.0, 0.0, 1.0));
+        }
+        _maskLayer->setFillRule(FillRule::EvenOdd);*/
+    }
+    
+    virtual ~MaskLayer() = default;
+    
+    void updateWithFrame(float frame, bool forceUpdates) {
+        if (_properties.opacity()->needsUpdate(frame) || forceUpdates) {
+            _properties.opacity()->update(frame);
+            setOpacity(_properties.opacity()->value().value);
+        }
+        
+        if (_properties.shape()->needsUpdate(frame) || forceUpdates) {
+            _properties.shape()->update(frame);
+            _properties.expansion()->update(frame);
+            
+            /*auto path = _properties.shape()->value().cgPath();
+            auto usableMode = usableMaskMode(_properties.mode());
+            if ((usableMode == MaskMode::Subtract && !_properties.inverted()) ||
+                 (usableMode == MaskMode::Add && _properties.inverted())) {
+                /// Add a bounds rect to invert the mask
+                auto newPath = CGPath::makePath();
+                newPath->addRect(CGRect::veryLarge());
+                newPath->addPath(path);
+                path = std::static_pointer_cast<CGPath>(newPath);
+            }
+            _maskLayer->setPath(path);*/
+        }
+    }
+    
+private:
+    MaskNodeProperties _properties;
+    
+    //std::shared_ptr<CAShapeLayer> _maskLayer;
+};
+
+class MaskContainerLayer: public CALayer {
+public:
+    MaskContainerLayer(std::vector<std::shared_ptr<Mask>> const &masks) {
+        auto containerLayer = std::make_shared<CALayer>();
+        bool firstObject = true;
+        for (const auto &mask : masks) {
+            auto maskLayer = std::make_shared<MaskLayer>(mask);
+            _maskLayers.push_back(maskLayer);
+            
+            auto usableMode = usableMaskMode(mask->mode());
+            if (usableMode == MaskMode::None) {
+                continue;
+            } else if (usableMode == MaskMode::Add || firstObject) {
+                firstObject = false;
+                containerLayer->addSublayer(maskLayer);
+            } else {
+                containerLayer->setMask(maskLayer);
+                auto newContainer = std::make_shared<CALayer>();
+                newContainer->addSublayer(containerLayer);
+                containerLayer = newContainer;
+            }
+        }
+        addSublayer(containerLayer);
+    }
+    
+    // MARK: Internal
+    
+    void updateWithFrame(float frame, bool forceUpdates) {
+        for (const auto &maskLayer : _maskLayers) {
+            maskLayer->updateWithFrame(frame, forceUpdates);
+        }
+    }
+    
+private:
+    std::vector<std::shared_ptr<MaskLayer>> _maskLayers;
+};
+
+}
+
+#endif /* MaskContainerLayer_hpp */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/NullCompositionLayer.cpp

@@ -0,0 +1,5 @@
+#include "NullCompositionLayer.hpp"
+
+namespace lottie {
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/NullCompositionLayer.hpp

@@ -0,0 +1,17 @@
+#ifndef NullCompositionLayer_hpp
+#define NullCompositionLayer_hpp
+
+#include "Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.hpp"
+
+namespace lottie {
+
+class NullCompositionLayer: public CompositionLayer {
+public:
+    NullCompositionLayer(std::shared_ptr<LayerModel> const &layer) :
+    CompositionLayer(layer, Vector2D::Zero()) {
+    }
+};
+
+}
+
+#endif /* NullCompositionLayer_hpp */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/PreCompositionLayer.cpp

@@ -0,0 +1,5 @@
+#include "PreCompositionLayer.hpp"
+
+namespace lottie {
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/PreCompositionLayer.hpp

@@ -0,0 +1,202 @@
+#ifndef PreCompositionLayer_hpp
+#define PreCompositionLayer_hpp
+
+#include "Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.hpp"
+#include "Lottie/Private/Model/Layers/PreCompLayerModel.hpp"
+#include "Lottie/Private/Model/Assets/PrecompAsset.hpp"
+#include "Lottie/Private/MainThread/LayerContainers/Utility/LayerImageProvider.hpp"
+#include "Lottie/Public/TextProvider/AnimationTextProvider.hpp"
+#include "Lottie/Public/FontProvider/AnimationFontProvider.hpp"
+#include "Lottie/Private/Model/Assets/AssetLibrary.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/NodeProperties/NodeProperty.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/NodeProperties/ValueProviders/KeyframeInterpolator.hpp"
+#include "Lottie/Private/MainThread/LayerContainers/Utility/CompositionLayersInitializer.hpp"
+
+namespace lottie {
+
+class PreCompositionLayer: public CompositionLayer {
+public:
+    PreCompositionLayer(
+        std::shared_ptr<PreCompLayerModel> const &precomp,
+        PrecompAsset const &asset,
+        std::shared_ptr<LayerImageProvider> const &layerImageProvider,
+        std::shared_ptr<AnimationTextProvider> const &textProvider,
+        std::shared_ptr<AnimationFontProvider> const &fontProvider,
+        std::shared_ptr<AssetLibrary> const &assetLibrary,
+        float frameRate
+    ) : CompositionLayer(precomp, Vector2D(precomp->width, precomp->height)) {
+        if (precomp->timeRemapping) {
+            _remappingNode = std::make_shared<NodeProperty<Vector1D>>(std::make_shared<KeyframeInterpolator<Vector1D>>(precomp->timeRemapping->keyframes));
+        }
+        _frameRate = frameRate;
+        
+        setSize(Vector2D(precomp->width, precomp->height));
+        contentsLayer()->setMasksToBounds(true);
+        contentsLayer()->setSize(size());
+        
+        auto layers = initializeCompositionLayers(
+            asset.layers,
+            assetLibrary,
+            layerImageProvider,
+            textProvider,
+            fontProvider,
+            frameRate
+        );
+        
+        std::vector<std::shared_ptr<ImageCompositionLayer>> imageLayers;
+        
+        std::shared_ptr<CompositionLayer> mattedLayer;
+        
+        for (auto layerIt = layers.rbegin(); layerIt != layers.rend(); layerIt++) {
+            std::shared_ptr<CompositionLayer> layer = *layerIt;
+            layer->setSize(size());
+            _animationLayers.push_back(layer);
+            
+            if (layer->isImageCompositionLayer()) {
+                imageLayers.push_back(std::static_pointer_cast<ImageCompositionLayer>(layer));
+            }
+            if (mattedLayer) {
+                /// The previous layer requires this layer to be its matte
+                mattedLayer->setMatteLayer(layer);
+                mattedLayer = nullptr;
+                continue;
+            }
+            if (layer->matteType().has_value() && (layer->matteType().value() == MatteType::Add || layer->matteType().value() == MatteType::Invert)) {
+                /// We have a layer that requires a matte.
+                mattedLayer = layer;
+            }
+            contentsLayer()->addSublayer(layer);
+        }
+        
+        for (const auto &layer : layers) {
+            _childKeypaths.push_back(layer);
+        }
+        
+        layerImageProvider->addImageLayers(imageLayers);
+    }
+    
+    virtual std::map<std::string, std::shared_ptr<AnyNodeProperty>> keypathProperties() const override {
+        if (!_remappingNode) {
+            return {};
+        }
+        
+        std::map<std::string, std::shared_ptr<AnyNodeProperty>> result;
+        result.insert(std::make_pair("Time Remap", _remappingNode));
+        
+        return result;
+    }
+    
+    virtual void displayContentsWithFrame(float frame, bool forceUpdates, BezierPathsBoundingBoxContext &boundingBoxContext) override {
+        float localFrame = 0.0;
+        if (_remappingNode) {
+            _remappingNode->update(frame);
+            localFrame = _remappingNode->value().value * _frameRate;
+        } else {
+            localFrame = (frame - startFrame()) / timeStretch();
+        }
+        
+        for (const auto &animationLayer : _animationLayers) {
+            animationLayer->displayWithFrame(localFrame, forceUpdates, boundingBoxContext);
+        }
+    }
+    
+    virtual std::shared_ptr<RenderTreeNode> renderTreeNode(BezierPathsBoundingBoxContext &boundingBoxContext) override {
+        if (!_renderTreeNode) {
+            std::vector<std::shared_ptr<RenderTreeNode>> renderTreeSubnodes;
+            for (const auto &animationLayer : _animationLayers) {
+                bool found = false;
+                for (const auto &sublayer : contentsLayer()->sublayers()) {
+                    if (animationLayer == sublayer) {
+                        found = true;
+                        break;
+                    }
+                }
+                if (found) {
+                    auto node = animationLayer->renderTreeNode(boundingBoxContext);
+                    if (node) {
+                        renderTreeSubnodes.push_back(node);
+                    }
+                }
+            }
+            
+            std::vector<std::shared_ptr<RenderTreeNode>> renderTreeValue;
+            auto renderTreeContentItem = std::make_shared<RenderTreeNode>(
+                Vector2D(0.0, 0.0),
+                Transform2D::identity(),
+                1.0,
+                false,
+                false,
+                renderTreeSubnodes,
+                nullptr,
+                false
+            );
+            if (renderTreeContentItem) {
+                renderTreeValue.push_back(renderTreeContentItem);
+            }
+            
+            _contentsTreeNode = std::make_shared<RenderTreeNode>(
+                Vector2D(0.0, 0.0),
+                Transform2D::identity(),
+                1.0,
+                false,
+                false,
+                renderTreeValue,
+                nullptr,
+                false
+            );
+            
+            std::vector<std::shared_ptr<RenderTreeNode>> subnodes;
+            subnodes.push_back(_contentsTreeNode);
+            
+            std::shared_ptr<RenderTreeNode> maskNode;
+            bool invertMask = false;
+            if (_matteLayer) {
+                maskNode = _matteLayer->renderTreeNode(boundingBoxContext);
+                if (maskNode && _matteType.has_value() && _matteType.value() == MatteType::Invert) {
+                    invertMask = true;
+                }
+            }
+            
+            _renderTreeNode = std::make_shared<RenderTreeNode>(
+                Vector2D(0.0, 0.0),
+                Transform2D::identity(),
+                1.0,
+                false,
+                false,
+                subnodes,
+                maskNode,
+                invertMask
+            );
+        }
+        
+        _contentsTreeNode->_size = _contentsLayer->size();
+        _contentsTreeNode->_masksToBounds = _contentsLayer->masksToBounds();
+        
+        _renderTreeNode->_size = size();
+        _renderTreeNode->_transform = transform();
+        _renderTreeNode->_alpha = opacity();
+        _renderTreeNode->_masksToBounds = masksToBounds();
+        _renderTreeNode->_isHidden = isHidden();
+        
+        return _renderTreeNode;
+    }
+    
+    virtual void updateContentsLayerParameters() override {
+        _contentsTreeNode->_transform = _contentsLayer->transform();
+        _contentsTreeNode->_alpha = _contentsLayer->opacity();
+        _contentsTreeNode->_isHidden = _contentsLayer->isHidden();
+    }
+    
+private:
+    float _frameRate = 0.0;
+    std::shared_ptr<NodeProperty<Vector1D>> _remappingNode;
+    
+    std::vector<std::shared_ptr<CompositionLayer>> _animationLayers;
+    
+    std::shared_ptr<RenderTreeNode> _renderTreeNode;
+    std::shared_ptr<RenderTreeNode> _contentsTreeNode;
+};
+
+}
+
+#endif /* PreCompositionLayer_hpp */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/ShapeCompositionLayer.hpp

@@ -0,0 +1,36 @@
+#ifndef ShapeCompositionLayer_hpp
+#define ShapeCompositionLayer_hpp
+
+#include "Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.hpp"
+#include "Lottie/Private/Model/Layers/ShapeLayerModel.hpp"
+#include "Lottie/Private/Model/Layers/SolidLayerModel.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/Protocols/AnimatorNode.hpp"
+
+namespace lottie {
+
+class ShapeLayerPresentationTree;
+
+/// A CompositionLayer responsible for initializing and rendering shapes
+class ShapeCompositionLayer: public CompositionLayer {
+public:
+    ShapeCompositionLayer(std::shared_ptr<ShapeLayerModel> const &shapeLayer);
+    ShapeCompositionLayer(std::shared_ptr<SolidLayerModel> const &solidLayer);
+    
+    virtual void displayContentsWithFrame(float frame, bool forceUpdates, BezierPathsBoundingBoxContext &boundingBoxContext) override;
+    virtual std::shared_ptr<RenderTreeNode> renderTreeNode(BezierPathsBoundingBoxContext &boundingBoxContext) override;
+    void initializeContentsLayerParameters();
+    virtual void updateContentsLayerParameters() override;
+    
+private:
+    std::shared_ptr<ShapeLayerPresentationTree> _contentTree;
+    
+    AnimationFrameTime _frameTime = 0.0;
+    bool _frameTimeInitialized = false;
+    
+    std::shared_ptr<RenderTreeNode> _renderTreeNode;
+    std::shared_ptr<RenderTreeNode> _contentRenderTreeNode;
+};
+
+}
+
+#endif /* ShapeCompositionLayer_hpp */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/ShapeUtils/BezierPathUtils.cpp

@@ -0,0 +1,487 @@
+#include "BezierPathUtils.hpp"
+
+namespace lottie {
+
+BezierPath makeEllipseBezierPath(
+    Vector2D const &size,
+    Vector2D const &center,
+    PathDirection direction
+) {
+    const float ControlPointConstant = 0.55228;
+    
+    Vector2D half = size * 0.5;
+    if (direction == PathDirection::CounterClockwise) {
+        half.x = half.x * -1.0;
+    }
+    
+    Vector2D q1(center.x, center.y - half.y);
+    Vector2D q2(center.x + half.x, center.y);
+    Vector2D q3(center.x, center.y + half.y);
+    Vector2D q4(center.x - half.x, center.y);
+    
+    Vector2D cp = half * ControlPointConstant;
+    
+    BezierPath path(CurveVertex::relative(
+        q1,
+        Vector2D(-cp.x, 0),
+        Vector2D(cp.x, 0)));
+    path.addVertex(CurveVertex::relative(
+        q2,
+        Vector2D(0, -cp.y),
+        Vector2D(0, cp.y)));
+    
+    path.addVertex(CurveVertex::relative(
+        q3,
+        Vector2D(cp.x, 0),
+        Vector2D(-cp.x, 0)));
+    
+    path.addVertex(CurveVertex::relative(
+        q4,
+        Vector2D(0, cp.y),
+        Vector2D(0, -cp.y)));
+    
+    path.addVertex(CurveVertex::relative(
+        q1,
+        Vector2D(-cp.x, 0),
+        Vector2D(cp.x, 0)));
+    path.close();
+    return path;
+}
+
+BezierPath makeRectangleBezierPath(
+    Vector2D const &position,
+    Vector2D const &inputSize,
+    float cornerRadius,
+    PathDirection direction
+) {
+    const float ControlPointConstant = 0.55228;
+    
+    Vector2D size = inputSize * 0.5;
+    float radius = std::min(std::min(cornerRadius, (float)size.x), (float)size.y);
+    
+    BezierPath bezierPath;
+    std::vector<CurveVertex> points;
+    
+    if (radius <= 0.0) {
+        /// No Corners
+        points = {
+            /// Lead In
+            CurveVertex::relative(
+                Vector2D(size.x, -size.y),
+                Vector2D::Zero(),
+                Vector2D::Zero())
+            .translated(position),
+            /// Corner 1
+            CurveVertex::relative(
+                Vector2D(size.x, size.y),
+                Vector2D::Zero(),
+                Vector2D::Zero())
+            .translated(position),
+            /// Corner 2
+            CurveVertex::relative(
+                Vector2D(-size.x, size.y),
+                Vector2D::Zero(),
+                Vector2D::Zero())
+            .translated(position),
+            /// Corner 3
+            CurveVertex::relative(
+                Vector2D(-size.x, -size.y),
+                Vector2D::Zero(),
+                Vector2D::Zero())
+            .translated(position),
+            /// Corner 4
+            CurveVertex::relative(
+                Vector2D(size.x, -size.y),
+                Vector2D::Zero(),
+                Vector2D::Zero())
+            .translated(position)
+        };
+    } else {
+        float controlPoint = radius * ControlPointConstant;
+        points = {
+            /// Lead In
+            CurveVertex::absolute(
+                Vector2D(radius, 0),
+                Vector2D(radius, 0),
+                Vector2D(radius, 0))
+            .translated(Vector2D(-radius, radius))
+            .translated(Vector2D(size.x, -size.y))
+            .translated(position),
+            /// Corner 1
+            CurveVertex::absolute(
+                Vector2D(radius, 0), // Point
+                Vector2D(radius, 0), // In tangent
+                Vector2D(radius, controlPoint))
+            .translated(Vector2D(-radius, -radius))
+            .translated(Vector2D(size.x, size.y))
+            .translated(position),
+            CurveVertex::absolute(
+                Vector2D(0, radius), // Point
+                Vector2D(controlPoint, radius), // In tangent
+                Vector2D(0, radius)) // Out Tangent
+                .translated(Vector2D(-radius, -radius))
+                .translated(Vector2D(size.x, size.y))
+                .translated(position),
+            /// Corner 2
+            CurveVertex::absolute(
+                Vector2D(0, radius), // Point
+                Vector2D(0, radius), // In tangent
+                Vector2D(-controlPoint, radius))// Out tangent
+                .translated(Vector2D(radius, -radius))
+                .translated(Vector2D(-size.x, size.y))
+                .translated(position),
+            CurveVertex::absolute(
+                Vector2D(-radius, 0), // Point
+                Vector2D(-radius, controlPoint), // In tangent
+                Vector2D(-radius, 0)) // Out tangent
+                .translated(Vector2D(radius, -radius))
+                .translated(Vector2D(-size.x, size.y))
+                .translated(position),
+            /// Corner 3
+            CurveVertex::absolute(
+                Vector2D(-radius, 0), // Point
+                Vector2D(-radius, 0), // In tangent
+                Vector2D(-radius, -controlPoint)) // Out tangent
+                .translated(Vector2D(radius, radius))
+                .translated(Vector2D(-size.x, -size.y))
+                .translated(position),
+            CurveVertex::absolute(
+                Vector2D(0, -radius), // Point
+                Vector2D(-controlPoint, -radius), // In tangent
+                Vector2D(0, -radius)) // Out tangent
+                .translated(Vector2D(radius, radius))
+                .translated(Vector2D(-size.x, -size.y))
+                .translated(position),
+            /// Corner 4
+            CurveVertex::absolute(
+                Vector2D(0, -radius), // Point
+                Vector2D(0, -radius), // In tangent
+                Vector2D(controlPoint, -radius)) // Out tangent
+                .translated(Vector2D(-radius, radius))
+                .translated(Vector2D(size.x, -size.y))
+                .translated(position),
+            CurveVertex::absolute(
+                Vector2D(radius, 0), // Point
+                Vector2D(radius, -controlPoint), // In tangent
+                Vector2D(radius, 0)) // Out tangent
+                .translated(Vector2D(-radius, radius))
+                .translated(Vector2D(size.x, -size.y))
+                .translated(position)
+        };
+    }
+    bool reversed = direction == PathDirection::CounterClockwise;
+    if (reversed) {
+        for (auto vertexIt = points.rbegin(); vertexIt != points.rend(); vertexIt++) {
+            bezierPath.addVertex((*vertexIt).reversed());
+        }
+    } else {
+        for (auto vertexIt = points.begin(); vertexIt != points.end(); vertexIt++) {
+            bezierPath.addVertex(*vertexIt);
+        }
+    }
+    bezierPath.close();
+    return bezierPath;
+}
+
+/// Magic number needed for building path data
+static constexpr float StarNodePolystarConstant = 0.47829;
+
+BezierPath makeStarBezierPath(
+    Vector2D const &position,
+    float outerRadius,
+    float innerRadius,
+    float inputOuterRoundedness,
+    float inputInnerRoundedness,
+    float numberOfPoints,
+    float rotation,
+    PathDirection direction
+) {
+    float currentAngle = degreesToRadians(rotation - 90.0);
+    float anglePerPoint = (2.0 * M_PI) / numberOfPoints;
+    float halfAnglePerPoint = anglePerPoint / 2.0;
+    float partialPointAmount = numberOfPoints - floor(numberOfPoints);
+    float outerRoundedness = inputOuterRoundedness * 0.01;
+    float innerRoundedness = inputInnerRoundedness * 0.01;
+    
+    Vector2D point = Vector2D::Zero();
+    
+    float partialPointRadius = 0.0;
+    if (partialPointAmount != 0.0) {
+        currentAngle += halfAnglePerPoint * (1 - partialPointAmount);
+        partialPointRadius = innerRadius + partialPointAmount * (outerRadius - innerRadius);
+        point.x = (partialPointRadius * cos(currentAngle));
+        point.y = (partialPointRadius * sin(currentAngle));
+        currentAngle += anglePerPoint * partialPointAmount / 2;
+    } else {
+        point.x = (outerRadius * cos(currentAngle));
+        point.y = (outerRadius * sin(currentAngle));
+        currentAngle += halfAnglePerPoint;
+    }
+    
+    std::vector<CurveVertex> vertices;
+    vertices.push_back(CurveVertex::relative(point + position, Vector2D::Zero(), Vector2D::Zero()));
+    
+    Vector2D previousPoint = point;
+    bool longSegment = false;
+    int numPoints = (int)(ceil(numberOfPoints) * 2.0);
+    for (int i = 0; i < numPoints; i++) {
+        float radius = longSegment ? outerRadius : innerRadius;
+        float dTheta = halfAnglePerPoint;
+        if (partialPointRadius != 0.0 && i == numPoints - 2) {
+            dTheta = anglePerPoint * partialPointAmount / 2;
+        }
+        if (partialPointRadius != 0.0 && i == numPoints - 1) {
+            radius = partialPointRadius;
+        }
+        previousPoint = point;
+        point.x = (radius * cos(currentAngle));
+        point.y = (radius * sin(currentAngle));
+        
+        if (innerRoundedness == 0.0 && outerRoundedness == 0.0) {
+            vertices.push_back(CurveVertex::relative(point + position, Vector2D::Zero(), Vector2D::Zero()));
+        } else {
+            float cp1Theta = (atan2(previousPoint.y, previousPoint.x) - M_PI / 2.0);
+            float cp1Dx = cos(cp1Theta);
+            float cp1Dy = sin(cp1Theta);
+            
+            float cp2Theta = (atan2(point.y, point.x) - M_PI / 2.0);
+            float cp2Dx = cos(cp2Theta);
+            float cp2Dy = sin(cp2Theta);
+            
+            float cp1Roundedness = longSegment ? innerRoundedness : outerRoundedness;
+            float cp2Roundedness = longSegment ? outerRoundedness : innerRoundedness;
+            float cp1Radius = longSegment ? innerRadius : outerRadius;
+            float cp2Radius = longSegment ? outerRadius : innerRadius;
+            
+            Vector2D cp1(
+                cp1Radius * cp1Roundedness * StarNodePolystarConstant * cp1Dx,
+                cp1Radius * cp1Roundedness * StarNodePolystarConstant * cp1Dy
+            );
+            Vector2D cp2(
+                cp2Radius * cp2Roundedness * StarNodePolystarConstant * cp2Dx,
+                cp2Radius * cp2Roundedness * StarNodePolystarConstant * cp2Dy
+            );
+            if (partialPointAmount != 0.0) {
+                if (i == 0) {
+                    cp1 = cp1 * partialPointAmount;
+                } else if (i == numPoints - 1) {
+                    cp2 = cp2 * partialPointAmount;
+                }
+            }
+            auto previousVertex = vertices[vertices.size() - 1];
+            vertices[vertices.size() - 1] = CurveVertex::absolute(
+                previousVertex.point,
+                previousVertex.inTangent,
+                previousVertex.point - cp1
+            );
+            vertices.push_back(CurveVertex::relative(point + position, cp2, Vector2D::Zero()));
+        }
+        currentAngle += dTheta;
+        longSegment = !longSegment;
+    }
+    
+    bool reverse = direction == PathDirection::CounterClockwise;
+    BezierPath path;
+    if (reverse) {
+        for (auto vertexIt = vertices.rbegin(); vertexIt != vertices.rend(); vertexIt++) {
+            path.addVertex((*vertexIt).reversed());
+        }
+    } else {
+        for (auto vertexIt = vertices.begin(); vertexIt != vertices.end(); vertexIt++) {
+            path.addVertex(*vertexIt);
+        }
+    }
+    path.close();
+    return path;
+}
+
+CompoundBezierPath trimCompoundPath(CompoundBezierPath sourcePath, float start, float end, float offset, TrimType type) {
+    /// No need to trim, it's a full path
+    if (start == 0.0 && end == 1.0) {
+        return sourcePath;
+    }
+    
+    /// All paths are empty.
+    if (start == end) {
+        return CompoundBezierPath();
+    }
+    
+    if (type == TrimType::Simultaneously) {
+        CompoundBezierPath result;
+        
+        for (BezierPath &path : sourcePath.paths) {
+            CompoundBezierPath tempPath;
+            tempPath.appendPath(path);
+            
+            auto subPaths = tempPath.trim(start, end, offset);
+            
+            for (const auto &subPath : subPaths->paths) {
+                result.appendPath(subPath);
+            }
+        }
+
+        return result;
+    }
+    
+    /// Individual path trimming.
+    
+    /// Brace yourself for the below code.
+    
+    /// Normalize lengths with offset.
+    float startPosition = fmod(start + offset, 1.0);
+    float endPosition = fmod(end + offset, 1.0);
+    
+    if (startPosition < 0.0) {
+        startPosition = 1.0 + startPosition;
+    }
+    
+    if (endPosition < 0.0) {
+        endPosition = 1.0 + endPosition;
+    }
+    if (startPosition == 1.0) {
+        startPosition = 0.0;
+    }
+    if (endPosition == 0.0) {
+        endPosition = 1.0;
+    }
+    
+    /// First get the total length of all paths.
+    float totalLength = 0.0;
+    for (auto &upstreamPath : sourcePath.paths) {
+        totalLength += upstreamPath.length();
+    }
+    
+    /// Now determine the start and end cut lengths
+    float startLength = startPosition * totalLength;
+    float endLength = endPosition * totalLength;
+    float pathStart = 0.0;
+    
+    CompoundBezierPath result;
+    
+    /// Now loop through all path containers
+    for (auto &pathContainer : sourcePath.paths) {
+        auto pathEnd = pathStart + pathContainer.length();
+        
+        if (!isInRange(startLength, pathStart, pathEnd) &&
+            isInRange(endLength, pathStart, pathEnd)) {
+            // pathStart|=======E----------------------|pathEnd
+            // Cut path components, removing after end.
+            
+            float pathCutLength = endLength - pathStart;
+            float subpathStart = 0.0;
+            float subpathEnd = subpathStart + pathContainer.length();
+            if (pathCutLength < subpathEnd) {
+                /// This is the subpath that needs to be cut.
+                float cutLength = pathCutLength - subpathStart;
+                
+                CompoundBezierPath tempPath;
+                tempPath.appendPath(pathContainer);
+                auto newPaths = tempPath.trim(0, cutLength / pathContainer.length(), 0);
+                for (const auto &newPath : newPaths->paths) {
+                    result.appendPath(newPath);
+                }
+            } else {
+                /// Add to container and move on
+                result.appendPath(pathContainer);
+            }
+            /*if (pathCutLength == subpathEnd) {
+                /// Right on the end. The next subpath is not included. Break.
+                break;
+            }
+            subpathStart = subpathEnd;*/
+        } else if (!isInRange(endLength, pathStart, pathEnd) &&
+                   isInRange(startLength, pathStart, pathEnd)) {
+            // pathStart|-------S======================|pathEnd
+            //
+            
+            // Cut path components, removing before beginning.
+            float pathCutLength = startLength - pathStart;
+            // Clear paths from container
+            float subpathStart = 0.0;
+            float subpathEnd = subpathStart + pathContainer.length();
+            
+            if (subpathStart < pathCutLength && pathCutLength < subpathEnd) {
+                /// This is the subpath that needs to be cut.
+                float cutLength = pathCutLength - subpathStart;
+                CompoundBezierPath tempPath;
+                tempPath.appendPath(pathContainer);
+                auto newPaths = tempPath.trim(cutLength / pathContainer.length(), 1, 0);
+                for (const auto &newPath : newPaths->paths) {
+                    result.appendPath(newPath);
+                }
+            } else if (pathCutLength <= subpathStart) {
+                result.appendPath(pathContainer);
+            }
+            //subpathStart = subpathEnd;
+        } else if (isInRange(endLength, pathStart, pathEnd) &&
+                   isInRange(startLength, pathStart, pathEnd)) {
+            // pathStart|-------S============E---------|endLength
+            // pathStart|=====E----------------S=======|endLength
+            // trim from path beginning to endLength.
+            
+            // Cut path components, removing before beginnings.
+            float startCutLength = startLength - pathStart;
+            float endCutLength = endLength - pathStart;
+            
+            float subpathStart = 0.0;
+                
+            float subpathEnd = subpathStart + pathContainer.length();
+            
+            if (!isInRange(startCutLength, subpathStart, subpathEnd) &&
+                !isInRange(endCutLength, subpathStart, subpathEnd))
+            {
+                // The whole path is included. Add
+                // S|==============================|E
+                result.appendPath(pathContainer);
+            } else if (isInRange(startCutLength, subpathStart, subpathEnd) &&
+                       !isInRange(endCutLength, subpathStart, subpathEnd)) {
+                /// The start of the path needs to be trimmed
+                //  |-------S======================|E
+                float cutLength = startCutLength - subpathStart;
+                CompoundBezierPath tempPath;
+                tempPath.appendPath(pathContainer);
+                auto newPaths = tempPath.trim(cutLength / pathContainer.length(), 1, 0);
+                for (const auto &newPath : newPaths->paths) {
+                    result.appendPath(newPath);
+                }
+            } else if (!isInRange(startCutLength, subpathStart, subpathEnd) &&
+                       isInRange(endCutLength, subpathStart, subpathEnd)) {
+                // S|=======E----------------------|
+                float cutLength = endCutLength - subpathStart;
+                CompoundBezierPath tempPath;
+                tempPath.appendPath(pathContainer);
+                auto newPaths = tempPath.trim(0, cutLength / pathContainer.length(), 0);
+                for (const auto &newPath : newPaths->paths) {
+                    result.appendPath(newPath);
+                }
+            } else if (isInRange(startCutLength, subpathStart, subpathEnd) &&
+                       isInRange(endCutLength, subpathStart, subpathEnd)) {
+                //  |-------S============E---------|
+                float cutFromLength = startCutLength - subpathStart;
+                float cutToLength = endCutLength - subpathStart;
+                CompoundBezierPath tempPath;
+                tempPath.appendPath(pathContainer);
+                auto newPaths = tempPath.trim(
+                    cutFromLength / pathContainer.length(),
+                    cutToLength / pathContainer.length(),
+                    0
+                );
+                for (const auto &newPath : newPaths->paths) {
+                    result.appendPath(newPath);
+                }
+            }
+        } else if ((endLength <= pathStart && pathEnd <= startLength) ||
+                   (startLength <= pathStart && endLength <= pathStart) ||
+                   (pathEnd <= startLength && pathEnd <= endLength)) {
+            /// The Path needs to be cleared
+        } else {
+            result.appendPath(pathContainer);
+        }
+        
+        pathStart = pathEnd;
+    }
+    
+    return result;
+}
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/ShapeUtils/BezierPathUtils.hpp

@@ -0,0 +1,39 @@
+#ifndef BezierPaths_h
+#define BezierPaths_h
+
+#include "Lottie/Private/Model/ShapeItems/Ellipse.hpp"
+#include <LottieCpp/BezierPath.h>
+#include "Lottie/Private/Utility/Primitives/CompoundBezierPath.hpp"
+#include "Lottie/Private/Model/ShapeItems/Trim.hpp"
+
+namespace lottie {
+
+BezierPath makeEllipseBezierPath(
+    Vector2D const &size,
+    Vector2D const &center,
+    PathDirection direction
+);
+
+BezierPath makeRectangleBezierPath(
+    Vector2D const &position,
+    Vector2D const &inputSize,
+    float cornerRadius,
+    PathDirection direction
+);
+
+BezierPath makeStarBezierPath(
+    Vector2D const &position,
+    float outerRadius,
+    float innerRadius,
+    float inputOuterRoundedness,
+    float inputInnerRoundedness,
+    float numberOfPoints,
+    float rotation,
+    PathDirection direction
+);
+
+CompoundBezierPath trimCompoundPath(CompoundBezierPath sourcePath, float start, float end, float offset, TrimType type);
+
+}
+
+#endif /* BezierPaths_h */

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/TextCompositionLayer.cpp

@@ -0,0 +1,5 @@
+#include "TextCompositionLayer.hpp"
+
+namespace lottie {
+
+}

submodules/LottieCpp/lottiecpp/Sources/Lottie/Private/MainThread/LayerContainers/CompLayers/TextCompositionLayer.hpp

@@ -0,0 +1,81 @@
+#ifndef TextCompositionLayer_hpp
+#define TextCompositionLayer_hpp
+
+#include "Lottie/Private/MainThread/LayerContainers/CompLayers/CompositionLayer.hpp"
+#include "Lottie/Private/Model/Layers/TextLayerModel.hpp"
+#include "Lottie/Public/TextProvider/AnimationTextProvider.hpp"
+#include "Lottie/Public/FontProvider/AnimationFontProvider.hpp"
+#include "Lottie/Private/MainThread/NodeRenderSystem/Nodes/Text/TextAnimatorNode.hpp"
+
+namespace lottie {
+
+class TextCompositionLayer: public CompositionLayer {
+public:
+    TextCompositionLayer(std::shared_ptr<TextLayerModel> const &textLayer, std::shared_ptr<AnimationTextProvider> textProvider, std::shared_ptr<AnimationFontProvider> fontProvider) :
+    CompositionLayer(textLayer, Vector2D::Zero()) {
+        std::shared_ptr<TextAnimatorNode> rootNode;
+        for (const auto &animator : textLayer->animators) {
+            rootNode = std::make_shared<TextAnimatorNode>(rootNode, animator);
+        }
+        _rootNode = rootNode;
+        _textDocument = std::make_shared<KeyframeInterpolator<TextDocument>>(textLayer->text.keyframes);
+        
+        _textProvider = textProvider;
+        _fontProvider = fontProvider;
+        
+        if (_rootNode) {
+            _childKeypaths.push_back(rootNode);
+        }
+    }
+    
+    std::shared_ptr<AnimationTextProvider> const &textProvider() const {
+        return _textProvider;
+    }
+    void setTextProvider(std::shared_ptr<AnimationTextProvider> const &textProvider) {
+        _textProvider = textProvider;
+    }
+    
+    std::shared_ptr<AnimationFontProvider> const &fontProvider() const {
+        return _fontProvider;
+    }
+    void setFontProvider(std::shared_ptr<AnimationFontProvider> const &fontProvider) {
+        _fontProvider = fontProvider;
+    }
+    
+    virtual void displayContentsWithFrame(float frame, bool forceUpdates, BezierPathsBoundingBoxContext &boundingBoxContext) override {
+        if (!_textDocument) {
+            return;
+        }
+        
+        bool documentUpdate = _textDocument->hasUpdate(frame);
+        
+        bool animatorUpdate = false;
+        if (_rootNode) {
+            animatorUpdate = _rootNode->updateContents(frame, forceUpdates);
+        }
+        
+        if (!(documentUpdate || animatorUpdate)) {
+            return;
+        }
+        
+        if (_rootNode) {
+            _rootNode->rebuildOutputs(frame);
+        }
+    }
+    
+public:
+    virtual bool isTextCompositionLayer() const override {
+        return true;
+    }
+    
+private:
+    std::shared_ptr<TextAnimatorNode> _rootNode;
+    std::shared_ptr<KeyframeInterpolator<TextDocument>> _textDocument;
+    
+    std::shared_ptr<AnimationTextProvider> _textProvider;
+    std::shared_ptr<AnimationFontProvider> _fontProvider;
+};
+
+}
+
+#endif /* TextCompositionLayer_hpp */