/* -*- 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/. */ #ifndef mozilla_ComputedTimingFunction_h #define mozilla_ComputedTimingFunction_h #include "nsSMILKeySpline.h" // nsSMILKeySpline #include "nsStyleStruct.h" // nsTimingFunction namespace mozilla { class ComputedTimingFunction { public: // BeforeFlag is used in step timing function. // https://w3c.github.io/web-animations/#before-flag enum class BeforeFlag { Unset, Set }; void Init(const nsTimingFunction &aFunction); double GetValue(double aPortion, BeforeFlag aBeforeFlag) const; const nsSMILKeySpline* GetFunction() const { NS_ASSERTION(HasSpline(), "Type mismatch"); return &mTimingFunction; } nsTimingFunction::Type GetType() const { return mType; } bool HasSpline() const { return nsTimingFunction::IsSplineType(mType); } uint32_t GetSteps() const { return mSteps; } bool operator==(const ComputedTimingFunction& aOther) const { return mType == aOther.mType && (HasSpline() ? mTimingFunction == aOther.mTimingFunction : mSteps == aOther.mSteps); } bool operator!=(const ComputedTimingFunction& aOther) const { return !(*this == aOther); } int32_t Compare(const ComputedTimingFunction& aRhs) const; void AppendToString(nsAString& aResult) const; static double GetPortion(const Maybe<ComputedTimingFunction>& aFunction, double aPortion, BeforeFlag aBeforeFlag) { return aFunction ? aFunction->GetValue(aPortion, aBeforeFlag) : aPortion; } static int32_t Compare(const Maybe<ComputedTimingFunction>& aLhs, const Maybe<ComputedTimingFunction>& aRhs); private: nsTimingFunction::Type mType; nsSMILKeySpline mTimingFunction; uint32_t mSteps; }; } // namespace mozilla #endif // mozilla_ComputedTimingFunction_h