GT2/Ejectable/node_modules/react-native/ReactCommon/fabric/imagemanager/ImageInstrumentation.h

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2021-08-16 00:14:59 +00:00
/*
* 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 <react/core/ReactPrimitives.h>
namespace facebook {
namespace react {
/*
* A base class for performing image loading instrumentation.
* The actual instrumentation is app, platform, and image loader-specific.
*/
class ImageInstrumentation {
public:
virtual ~ImageInstrumentation() noexcept = default;
/**
* Mark that the image content is set on the native image component on screen.
*/
virtual void didSetImage() const = 0;
/**
* Mark that the image view starts to be visible on screen.
*/
virtual void didEnterVisibilityRange() const = 0;
/**
* Mark that the image view is no longer visible on screen.
*/
virtual void didExitVisibilityRange() const = 0;
};
} // namespace react
} // namespace facebook