mirror of
https://github.com/zhigang1992/react-native.git
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5c0da011cb
Summary: In this diff I added support to be able to measure C++ shadowNode in Android. As an example I implemented the measurement of TextViews Reviewed By: shergin Differential Revision: D9583972 fbshipit-source-id: 1344782d4c586c94a4576b18a4acfa4775e46952
51 lines
1.6 KiB
C++
51 lines
1.6 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 "TextLayoutManager.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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TextLayoutManager::~TextLayoutManager() {
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}
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void *TextLayoutManager::getNativeTextLayoutManager() const {
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return self_;
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}
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Size TextLayoutManager::measure(
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Tag reactTag,
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AttributedString attributedString,
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ParagraphAttributes paragraphAttributes,
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LayoutConstraints layoutConstraints
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) const {
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const jni::global_ref<jobject> & fabricUIManager = contextContainer_->getInstance<jni::global_ref<jobject>>("FabricUIManager");
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auto clazz = jni::findClassStatic("com/facebook/fbreact/fabricxx/UIManager");
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static auto measure =
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clazz->getMethod<JArrayFloat::javaobject(jint, jstring, ReadableNativeMap::javaobject, ReadableNativeMap::javaobject, jint, jint)>("measure");
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int width = (int) layoutConstraints.maximumSize.width;
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int height = (int) layoutConstraints.maximumSize.height;
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local_ref<JString> componentName = make_jstring("RCTText");
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auto values = measure(fabricUIManager, reactTag, componentName.get(), ReadableNativeMap::newObjectCxxArgs(attributedString.toDynamic()).get(), ReadableNativeMap::newObjectCxxArgs(paragraphAttributes.toDynamic()).get(), width, height);
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std::vector<float> indices;
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indices.resize(values->size());
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values->getRegion(0, values->size(), indices.data());
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return {(float) indices[0], (float) indices[1]};
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}
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} // namespace react
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} // namespace facebook
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