mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Kevin Gozali
55142efd3a
Summary: Added basic hook to enable image instrumentation. The hook passes information to the existing image loader, where instrumentation is done, specific for each app, if any. Changelog: [Internal] Reviewed By: mdvacca Differential Revision: D19047899 fbshipit-source-id: 6c013806cce98bcf1ea240d696a7ede9697e5cd9
41 lines
956 B
C++
41 lines
956 B
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/core/ReactPrimitives.h>
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namespace facebook {
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namespace react {
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/*
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* A base class for performing image loading instrumentation.
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* The actual instrumentation is app, platform, and image loader-specific.
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*/
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class ImageInstrumentation {
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public:
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virtual ~ImageInstrumentation() noexcept = default;
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/**
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* Mark that the image content is set on the native image component on screen.
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*/
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virtual void didSetImage() const = 0;
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/**
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* Mark that the image view starts to be visible on screen.
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*/
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virtual void didEnterVisibilityRange() const = 0;
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/**
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* Mark that the image view is no longer visible on screen.
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*/
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virtual void didExitVisibilityRange() const = 0;
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};
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} // namespace react
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} // namespace facebook
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