mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Joshua GrossandFacebook Github Bot
28b8b8e370
Summary: The goal is to be able to use MobileConfig params inside of core React Native C++ code. This works on Catalyst iOS now and Wilde; need to add support for FB4A and Catalyst Android. Reviewed By: fkgozali Differential Revision: D13883007 fbshipit-source-id: 115fe6cc884d2a0b9ca26dadf867a5f0ae99f262
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/**
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* Copyright (c) Facebook, Inc. and its 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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#include "ParagraphShadowNode.h"
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#include "ParagraphLocalData.h"
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#include "ParagraphMeasurementCache.h"
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namespace facebook {
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namespace react {
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const char ParagraphComponentName[] = "Paragraph";
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AttributedString ParagraphShadowNode::getAttributedString() const {
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if (!cachedAttributedString_.has_value()) {
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auto textAttributes = TextAttributes::defaultTextAttributes();
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textAttributes.apply(getProps()->textAttributes);
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cachedAttributedString_ = BaseTextShadowNode::getAttributedString(
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textAttributes, shared_from_this());
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}
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return cachedAttributedString_.value();
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}
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void ParagraphShadowNode::setTextLayoutManager(
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SharedTextLayoutManager textLayoutManager) {
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ensureUnsealed();
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textLayoutManager_ = textLayoutManager;
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}
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void ParagraphShadowNode::setMeasureCache(
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const ParagraphMeasurementCache *cache) {
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ensureUnsealed();
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measureCache_ = cache;
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}
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void ParagraphShadowNode::updateLocalDataIfNeeded() {
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ensureUnsealed();
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auto attributedString = getAttributedString();
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auto currentLocalData =
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std::static_pointer_cast<const ParagraphLocalData>(getLocalData());
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if (currentLocalData &&
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currentLocalData->getAttributedString() == attributedString) {
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return;
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}
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auto localData = std::make_shared<ParagraphLocalData>();
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localData->setAttributedString(std::move(attributedString));
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localData->setTextLayoutManager(textLayoutManager_);
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setLocalData(localData);
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}
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#pragma mark - LayoutableShadowNode
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Size ParagraphShadowNode::measure(LayoutConstraints layoutConstraints) const {
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AttributedString attributedString = getAttributedString();
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const ParagraphAttributes attributes = getProps()->paragraphAttributes;
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auto makeMeasurements = [&] {
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return textLayoutManager_->measure(
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attributedString, getProps()->paragraphAttributes, layoutConstraints);
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};
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// Cache results of this function so we don't need to call measure()
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// repeatedly
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if (measureCache_ != nullptr) {
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ParagraphMeasurementCacheKey cacheKey =
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std::make_tuple(attributedString, attributes, layoutConstraints);
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if (measureCache_->exists(cacheKey)) {
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return measureCache_->get(cacheKey);
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}
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auto measuredSize = makeMeasurements();
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measureCache_->set(cacheKey, measuredSize);
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return measuredSize;
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}
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return makeMeasurements();
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}
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void ParagraphShadowNode::layout(LayoutContext layoutContext) {
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updateLocalDataIfNeeded();
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ConcreteViewShadowNode::layout(layoutContext);
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}
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} // namespace react
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} // namespace facebook
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