63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <react/renderer/core/ShadowNode.h>
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#include <react/renderer/graphics/Point.h>
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#include <react/renderer/mounting/ShadowView.h>
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namespace facebook::react {
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/*
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* Describes pair of a `ShadowView` and a `ShadowNode`.
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* This is not exposed to the mounting layer.
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*/
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struct ShadowViewNodePair final {
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ShadowView shadowView;
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const ShadowNode* shadowNode;
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/**
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* The ShadowNode does not form a stacking context, and the native views
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* corresponding to its children may be parented to an ancestor.
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*/
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bool flattened{false};
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/**
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* Whether this ShadowNode should create a corresponding native view.
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*/
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bool isConcreteView{true};
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Point contextOrigin{0, 0};
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size_t mountIndex{0};
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/**
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* This is nullptr unless `inOtherTree` is set to true.
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* We rely on this only for marginal cases. TODO: could we
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* rely on this more heavily to simplify the diffing algorithm
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* overall?
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*/
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mutable const ShadowViewNodePair* otherTreePair{nullptr};
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/*
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* The stored pointer to `ShadowNode` represents an identity of the pair.
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*/
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bool operator==(const ShadowViewNodePair& rhs) const {
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return this->shadowNode == rhs.shadowNode;
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}
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bool operator!=(const ShadowViewNodePair& rhs) const {
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return !(*this == rhs);
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}
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bool inOtherTree() const {
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return this->otherTreePair != nullptr;
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}
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};
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} // namespace facebook::react
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