mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
79090c4802
Summary: We need to do this to break a dependency cycle that would happen if we try to have `view` depend on `mounting` just to add some telemetry to `view`. Changelog: [Internal] Fabric-specific internal change. Reviewed By: mdvacca Differential Revision: D26827446 fbshipit-source-id: 4c415ebf5be3a02c18c80ea8a4a77068cae0f0fe
100 lines
3.2 KiB
Plaintext
100 lines
3.2 KiB
Plaintext
/*
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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 "TextLayoutManager.h"
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#include <react/renderer/telemetry/TransactionTelemetry.h>
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#include <react/utils/ManagedObjectWrapper.h>
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#import "RCTTextLayoutManager.h"
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namespace facebook {
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namespace react {
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TextLayoutManager::TextLayoutManager(ContextContainer::Shared const &contextContainer)
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{
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self_ = wrapManagedObject([RCTTextLayoutManager new]);
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}
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std::shared_ptr<void> TextLayoutManager::getNativeTextLayoutManager() const
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{
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assert(self_ && "Stored NativeTextLayoutManager must not be null.");
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return self_;
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}
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TextMeasurement TextLayoutManager::measure(
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AttributedStringBox attributedStringBox,
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ParagraphAttributes paragraphAttributes,
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LayoutConstraints layoutConstraints) const
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{
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RCTTextLayoutManager *textLayoutManager = (RCTTextLayoutManager *)unwrapManagedObject(self_);
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auto measurement = TextMeasurement{};
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switch (attributedStringBox.getMode()) {
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case AttributedStringBox::Mode::Value: {
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auto &attributedString = attributedStringBox.getValue();
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measurement = measureCache_.get(
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{attributedString, paragraphAttributes, layoutConstraints}, [&](TextMeasureCacheKey const &key) {
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auto telemetry = TransactionTelemetry::threadLocalTelemetry();
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if (telemetry) {
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telemetry->willMeasureText();
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}
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auto measurement = [textLayoutManager measureAttributedString:attributedString
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paragraphAttributes:paragraphAttributes
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layoutConstraints:layoutConstraints];
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if (telemetry) {
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telemetry->didMeasureText();
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}
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return measurement;
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});
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break;
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}
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case AttributedStringBox::Mode::OpaquePointer: {
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NSAttributedString *nsAttributedString =
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(NSAttributedString *)unwrapManagedObject(attributedStringBox.getOpaquePointer());
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auto telemetry = TransactionTelemetry::threadLocalTelemetry();
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if (telemetry) {
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telemetry->willMeasureText();
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}
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measurement = [textLayoutManager measureNSAttributedString:nsAttributedString
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paragraphAttributes:paragraphAttributes
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layoutConstraints:layoutConstraints];
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if (telemetry) {
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telemetry->didMeasureText();
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}
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break;
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}
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}
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measurement.size = layoutConstraints.clamp(measurement.size);
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return measurement;
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}
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LinesMeasurements TextLayoutManager::measureLines(
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AttributedString attributedString,
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ParagraphAttributes paragraphAttributes,
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Size size) const
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{
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RCTTextLayoutManager *textLayoutManager = (RCTTextLayoutManager *)unwrapManagedObject(self_);
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return [textLayoutManager getLinesForAttributedString:attributedString
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paragraphAttributes:paragraphAttributes
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size:{size.width, size.height}];
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}
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} // namespace react
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} // namespace facebook
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