зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
2.6 KiB
C++
86 строки
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_AnimationUtils_h
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#define mozilla_dom_AnimationUtils_h
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#include "mozilla/TimeStamp.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/Nullable.h"
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#include "nsRFPService.h"
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#include "nsStringFwd.h"
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class nsIContent;
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class nsIDocument;
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class nsIFrame;
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struct JSContext;
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namespace mozilla {
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class ComputedTimingFunction;
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class EffectSet;
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class AnimationUtils {
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public:
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static dom::Nullable<double> TimeDurationToDouble(
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const dom::Nullable<TimeDuration>& aTime) {
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dom::Nullable<double> result;
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if (!aTime.IsNull()) {
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// 0 is an inappropriate mixin for this this area; however CSS Animations
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// needs to have it's Time Reduction Logic refactored, so it's currently
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// only clamping for RFP mode. RFP mode gives a much lower time precision,
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// so we accept the security leak here for now
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result.SetValue(nsRFPService::ReduceTimePrecisionAsMSecs(
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aTime.Value().ToMilliseconds(), 0, TimerPrecisionType::RFPOnly));
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}
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return result;
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}
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static dom::Nullable<TimeDuration> DoubleToTimeDuration(
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const dom::Nullable<double>& aTime) {
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dom::Nullable<TimeDuration> result;
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if (!aTime.IsNull()) {
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result.SetValue(TimeDuration::FromMilliseconds(aTime.Value()));
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}
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return result;
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}
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static void LogAsyncAnimationFailure(nsCString& aMessage,
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const nsIContent* aContent = nullptr);
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/**
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* Get the document from the JS context to use when parsing CSS properties.
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*/
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static nsIDocument* GetCurrentRealmDocument(JSContext* aCx);
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/**
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* Get the document from the global object, or nullptr if the document has
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* no window, to use when constructing DOM object without entering the
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* target window's compartment (see KeyframeEffect constructor).
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*/
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static nsIDocument* GetDocumentFromGlobal(JSObject* aGlobalObject);
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/**
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* Checks if offscreen animation throttling is enabled.
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*/
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static bool IsOffscreenThrottlingEnabled();
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/**
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* Returns true if the given EffectSet contains a current effect that animates
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* scale. |aFrame| is used for calculation of scale values.
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*/
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static bool EffectSetContainsAnimatedScale(EffectSet& aEffects,
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const nsIFrame* aFrame);
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};
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} // namespace mozilla
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#endif
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