mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
197c644f7a
Summary: This is the final piece of change that makes measuring (`LayoutableShadowNode::getRelativeLayoutMetrics()`) take ScrollView content offset into account (on iOS). It works pretty simply: at the end of scrolling (or zooming) action ScrollView updates the state which later can be used for computing `transform` which measuring uses to adjust values in LaoutMetrics. Reviewed By: mdvacca Differential Revision: D15323688 fbshipit-source-id: fdf86c6cd9bdfd56caddd4b39bdd1185760b9f94
43 lines
1.2 KiB
C++
43 lines
1.2 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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#pragma once
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#include <react/components/scrollview/ScrollViewEventEmitter.h>
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#include <react/components/scrollview/ScrollViewProps.h>
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#include <react/components/scrollview/ScrollViewState.h>
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#include <react/components/view/ConcreteViewShadowNode.h>
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#include <react/core/LayoutContext.h>
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namespace facebook {
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namespace react {
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extern const char ScrollViewComponentName[];
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/*
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* `ShadowNode` for <ScrollView> component.
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*/
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class ScrollViewShadowNode final : public ConcreteViewShadowNode<
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ScrollViewComponentName,
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ScrollViewProps,
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ScrollViewEventEmitter,
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ScrollViewState> {
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public:
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using ConcreteViewShadowNode::ConcreteViewShadowNode;
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#pragma mark - LayoutableShadowNode
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void layout(LayoutContext layoutContext) override;
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Transform getTransform() const override;
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private:
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void updateStateIfNeeded();
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};
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} // namespace react
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} // namespace facebook
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