mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
d41e95fb1a
Summary: changelog: [internal] This diff introduces a mechanism to cache NSTextStorage on Paragraph's state. The old renderer already has caching for NSTextStorage: https://github.com/facebook/react-native/blob/main/Libraries/Text/Text/RCTTextShadowView.m#L21 Fabric will store `NSTextStorage` inside `ParagraphLayoutManager` which is owned by state. There is one notable change which is not gated: Paragraph's state strongly owns `TextLayoutManager`, not `ParagraphShadowNode` like previously. This shouldn't change anything Reviewed By: mdvacca Differential Revision: D43692171 fbshipit-source-id: efe6077222a30ab6d89abd9916534b9a96e745d4
76 lines
2.3 KiB
C++
76 lines
2.3 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/debug/react_native_assert.h>
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#include <react/renderer/attributedstring/AttributedString.h>
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#include <react/renderer/attributedstring/ParagraphAttributes.h>
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#include <react/renderer/components/text/ParagraphLayoutManager.h>
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#ifdef ANDROID
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#include <folly/dynamic.h>
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#include <react/renderer/mapbuffer/MapBuffer.h>
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#endif
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namespace facebook::react {
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#ifdef ANDROID
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// constants for Text State serialization
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constexpr static MapBuffer::Key TX_STATE_KEY_ATTRIBUTED_STRING = 0;
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constexpr static MapBuffer::Key TX_STATE_KEY_PARAGRAPH_ATTRIBUTES = 1;
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// Used for TextInput only
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constexpr static MapBuffer::Key TX_STATE_KEY_HASH = 2;
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constexpr static MapBuffer::Key TX_STATE_KEY_MOST_RECENT_EVENT_COUNT = 3;
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#endif
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/*
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* State for <Paragraph> component.
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* Represents what to render and how to render.
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*/
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struct ParagraphState {
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/*
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* All content of <Paragraph> component represented as an `AttributedString`.
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*/
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AttributedString attributedString;
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/*
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* Represents all visual attributes of a paragraph of text represented as
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* a ParagraphAttributes.
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*/
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ParagraphAttributes paragraphAttributes;
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/*
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* `ParagraphLayoutManager` provides a connection to platform-specific
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* text rendering infrastructure which is capable to render the
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* `AttributedString`.
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* This is not on every platform. This is not used on Android, but is
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* used on the iOS mounting layer.
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*/
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ParagraphLayoutManager paragraphLayoutManager;
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#ifdef ANDROID
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ParagraphState(
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AttributedString const &attributedString,
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ParagraphAttributes const ¶graphAttributes,
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ParagraphLayoutManager const ¶graphLayoutManager)
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: attributedString(attributedString),
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paragraphAttributes(paragraphAttributes),
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paragraphLayoutManager(paragraphLayoutManager) {}
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ParagraphState() = default;
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ParagraphState(
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ParagraphState const &previousState,
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folly::dynamic const &data) {
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react_native_assert(false && "Not supported");
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};
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folly::dynamic getDynamic() const;
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MapBuffer getMapBuffer() const;
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#endif
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};
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} // namespace facebook::react
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