third_party/WebKit/Source/core/dom/IntersectionObserver.cpp - Issue 2272773002: Use intersection observer to control frame throttling

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Unified Diff: third_party/WebKit/Source/core/dom/IntersectionObserver.cpp

Issue 2272773002: Use intersection observer to control frame throttling (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Add support for setting initial observer state Created 4 years, 2 months ago

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« third_party/WebKit/Source/core/dom/ElementVisibilityObserver.h ('K') | « third_party/WebKit/Source/core/dom/IntersectionObserver.h ('k') | third_party/WebKit/Source/core/frame/FrameView.h » ('j') | third_party/WebKit/Source/core/frame/FrameView.cpp » ('J')
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Index: third_party/WebKit/Source/core/dom/IntersectionObserver.cpp

diff --git a/third_party/WebKit/Source/core/dom/IntersectionObserver.cpp b/third_party/WebKit/Source/core/dom/IntersectionObserver.cpp

index 7509dcf7051d0c111c615918360c489eed7e098e..260f68bfba19a1ad02566475ce31d43ef27a4aa7 100644

--- a/third_party/WebKit/Source/core/dom/IntersectionObserver.cpp

+++ b/third_party/WebKit/Source/core/dom/IntersectionObserver.cpp

@@ -345,6 +345,12 @@ void IntersectionObserver::removeObservation(

m_observations.remove(&observation);

}

+void IntersectionObserver::setInitialState(InitialState initialState) {

+ DCHECK_EQ(initialState, InitialState::AUTO);

+ for (auto& observation : observations())

+ observation->setLastThresholdIndex(std::numeric_limits<unsigned>::max());

HeapVector<Member<IntersectionObserverEntry>> IntersectionObserver::takeRecords(

ExceptionState& exceptionState) {

HeapVector<Member<IntersectionObserverEntry>> entries;