f29f525c77
- 37개 파일 IP → zioinfo.co.kr 치환 (소스/매뉴얼/설정/하네스) - Manager DrConsole/NetworkConsole/CsapConsole 빌드 + /var/www/manager/ 배포 - 테스트: Manager HTTP 200, ITSM 신규 API 7개 전체 200 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
95 lines
3.4 KiB
C++
95 lines
3.4 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/attributedstring/AttributedString.h>
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#include <react/renderer/attributedstring/ParagraphAttributes.h>
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#include <react/renderer/core/LayoutConstraints.h>
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#include <react/renderer/textlayoutmanager/TextLayoutContext.h>
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#include <react/renderer/textlayoutmanager/TextLayoutManager.h>
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namespace facebook::react {
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/*
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* Serves as a middle man between `ParagraphShadowNode` and `TextLayoutManager`.
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* On iOS, caches `NSTextStorage` for individual `ParagraphShadowNode` to make
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* sure only one `NSTextStorage` is created for every string. `NSTextStorage`
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* can be re created on native views layer but it is expensive. On Android, this
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* class does not cache anything.
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*/
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class ParagraphLayoutManager {
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public:
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TextMeasurement measure(
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const AttributedString& attributedString,
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const ParagraphAttributes& paragraphAttributes,
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const TextLayoutContext& layoutContext,
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LayoutConstraints layoutConstraints) const;
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LinesMeasurements measureLines(
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const AttributedString& attributedString,
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const ParagraphAttributes& paragraphAttributes,
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Size size) const;
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void setTextLayoutManager(
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std::shared_ptr<const TextLayoutManager> textLayoutManager) const;
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/*
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* Returns an opaque pointer to platform-specific `TextLayoutManager`.
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* Is used on a native views layer to delegate text rendering to the manager.
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*/
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std::shared_ptr<const TextLayoutManager> getTextLayoutManager() const;
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/*
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* Returns opaque shared_ptr holding `NSTextStorage`.
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* May be nullptr.
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* Is used on a native views layer to prevent `NSTextStorage` from being
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* created twice.
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*/
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std::shared_ptr<void> getHostTextStorage() const;
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private:
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std::shared_ptr<const TextLayoutManager> mutable textLayoutManager_{};
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/*
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* Stores opaque pointer to `NSTextStorage` on iOS. nullptr on Android.
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* TODO: In the future, we may want to cache Android's text storage.
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*/
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std::shared_ptr<void> mutable hostTextStorage_{};
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/*
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* Hash of AttributedString and ParagraphAttributes last used to
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* measure. Result of that measure is stored in cachedTextMeasurement_.
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* The available width defined for the measurement is stored in
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* lastAvailableWidth_.
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*/
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size_t mutable paragraphInputHash_{};
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/* The width Yoga set as maximum width.
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* Yoga calls measure twice with two
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* different maximum width. One of available space.
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* The other one is exact space needed for the string.
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* This happens when node is dirtied but its size is not affected.
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* To deal with this inefficiency, we cache `TextMeasurement` for each
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* `ParagraphShadowNode`. If Yoga tries to re-measure with available width
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* or exact width, we provide it with the cached value.
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*/
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Float mutable lastAvailableWidth_{};
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TextMeasurement mutable cachedTextMeasurement_{};
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/*
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* Checks whether the inputs into text measurement meaningfully affect
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* text measurement result. Returns true if inputs have changed and measure is
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* needed.
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*/
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bool shouldMeasureString(
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const AttributedString& attributedString,
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const ParagraphAttributes& paragraphAttributes,
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LayoutConstraints layoutConstraints) const;
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};
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} // namespace facebook::react
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