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https://github.com/zhigang1992/react-native.git
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edceba9a9c
Summary: Small perf wins for both iOS and Android. Reviewed By: PeteTheHeat Differential Revision: D14237532 fbshipit-source-id: 2be114d36adfa6e8540cb8cbca5412782791d8ce
69 lines
1.7 KiB
C++
69 lines
1.7 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 "SliderMeasurementsManager.h"
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#include <fb/fbjni.h>
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#include <react/core/conversions.h>
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#include <react/jni/ReadableNativeMap.h>
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using namespace facebook::jni;
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namespace facebook {
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namespace react {
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Size SliderMeasurementsManager::measure(
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LayoutConstraints layoutConstraints) const {
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{
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std::lock_guard<std::mutex> lock(mutex_);
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if (hasBeenMeasured_) {
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return cachedMeasurement_;
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}
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}
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const jni::global_ref<jobject> &fabricUIManager =
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contextContainer_->getInstance<jni::global_ref<jobject>>(
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"FabricUIManager");
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static auto measure =
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jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
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->getMethod<jlong(
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jstring,
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ReadableMap::javaobject,
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ReadableMap::javaobject,
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jint,
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jint,
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jint,
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jint)>("measure");
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auto minimumSize = layoutConstraints.minimumSize;
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auto maximumSize = layoutConstraints.maximumSize;
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int minWidth = (int)minimumSize.width;
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int minHeight = (int)minimumSize.height;
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int maxWidth = (int)maximumSize.width;
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int maxHeight = (int)maximumSize.height;
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local_ref<JString> componentName = make_jstring("RCTSlider");
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auto measurement = yogaMeassureToSize(measure(
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fabricUIManager,
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componentName.get(),
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nullptr,
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nullptr,
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minWidth,
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maxWidth,
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minHeight,
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maxHeight));
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std::lock_guard<std::mutex> lock(mutex_);
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cachedMeasurement_ = measurement;
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return measurement;
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}
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} // namespace react
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} // namespace facebook
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