/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// ScrollLinkedEffectDetector is used to detect the existence of a scroll-linked // effect on a webpage. Generally speaking, a scroll-linked effect is something // on the page that animates or changes with respect to the scroll position. // Content authors usually rely on running some JS in response to the scroll // event in order to implement such effects, and therefore it tends to be laggy // or work improperly with APZ enabled. This class helps us detect such an // effect so that we can warn the author and/or take other preventative // measures. class MOZ_STACK_CLASS ScrollLinkedEffectDetector final { private: static uint32_t sDepth; staticbool sFoundScrollLinkedEffect;
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