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bd99d3a6f4
Summary: All the props of a scrollview, and local data. LocalData part is probably the most interesting: with it we precompute content size which we use inside native scrollview. Previously we rely on some assumptions like "ScrollView must have only one subview" instead, and that was not so efficient and straight-forward. Reviewed By: fkgozali Differential Revision: D7961869 fbshipit-source-id: fa070b8423a3e7739aeb62220e51213683e1a223
42 lines
1022 B
C++
42 lines
1022 B
C++
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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 "ScrollViewShadowNode.h"
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#include <fabric/core/LayoutMetrics.h>
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#include "ScrollViewLocalData.h"
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namespace facebook {
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namespace react {
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ComponentName ScrollViewShadowNode::getComponentName() const {
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return ComponentName("ScrollView");
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}
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void ScrollViewShadowNode::updateLocalData() {
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ensureUnsealed();
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Rect contentBoundingRect;
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for (auto &&childNode : getLayoutableChildNodes()) {
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contentBoundingRect.unionInPlace(childNode->getLayoutMetrics().frame);
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}
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auto &&localData = std::make_shared<const ScrollViewLocalData>(contentBoundingRect);
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setLocalData(localData);
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}
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#pragma mark - LayoutableShadowNode
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void ScrollViewShadowNode::layout(LayoutContext layoutContext) {
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ConcreteViewShadowNode<ScrollViewProps>::layout(layoutContext);
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updateLocalData();
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}
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} // namespace react
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} // namespace facebook
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