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2021-04-02 02:24:13 +03:00
/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include <memory>
#include <folly/dynamic.h>
#include <react/components/view/ViewEventEmitter.h>
#include <react/core/EventEmitter.h>
#include <react/graphics/Geometry.h>
namespace facebook {
namespace react {
class ScrollViewMetrics {
public:
Size contentSize;
Point contentOffset;
EdgeInsets contentInset;
Size containerSize;
Float zoomScale;
};
class ScrollViewEventEmitter;
using SharedScrollViewEventEmitter =
std::shared_ptr<const ScrollViewEventEmitter>;
class ScrollViewEventEmitter : public ViewEventEmitter {
public:
using ViewEventEmitter::ViewEventEmitter;
void onScroll(const ScrollViewMetrics &scrollViewMetrics) const;
void onScrollBeginDrag(const ScrollViewMetrics &scrollViewMetrics) const;
void onScrollEndDrag(const ScrollViewMetrics &scrollViewMetrics) const;
void onMomentumScrollBegin(const ScrollViewMetrics &scrollViewMetrics) const;
void onMomentumScrollEnd(const ScrollViewMetrics &scrollViewMetrics) const;
private:
void dispatchScrollViewEvent(
const std::string &name,
const ScrollViewMetrics &scrollViewMetrics,
EventPriority priority = EventPriority::AsynchronousBatched) const;
};
} // namespace react
} // namespace facebook