/* -*- 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 __NS_SVGNUMBERPAIR_H__ #define __NS_SVGNUMBERPAIR_H__ #include "nsCycleCollectionParticipant.h" #include "nsError.h" #include "nsISMILAttr.h" #include "nsMathUtils.h" #include "nsSVGElement.h" #include "mozilla/Attributes.h" #include "mozilla/dom/SVGAnimatedNumber.h" #include "mozilla/FloatingPoint.h" class nsSMILValue; namespace mozilla { namespace dom { class SVGAnimationElement; } // namespace dom } // namespace mozilla class nsSVGNumberPair { public: enum PairIndex { eFirst, eSecond }; void Init(uint8_t aAttrEnum = 0xff, float aValue1 = 0, float aValue2 = 0) { mAnimVal[0] = mBaseVal[0] = aValue1; mAnimVal[1] = mBaseVal[1] = aValue2; mAttrEnum = aAttrEnum; mIsAnimated = false; mIsBaseSet = false; } nsresult SetBaseValueString(const nsAString& aValue, nsSVGElement *aSVGElement); void GetBaseValueString(nsAString& aValue) const; void SetBaseValue(float aValue, PairIndex aIndex, nsSVGElement *aSVGElement); void SetBaseValues(float aValue1, float aValue2, nsSVGElement *aSVGElement); float GetBaseValue(PairIndex aIndex) const { return mBaseVal[aIndex == eFirst ? 0 : 1]; } void SetAnimValue(const float aValue[2], nsSVGElement *aSVGElement); float GetAnimValue(PairIndex aIndex) const { return mAnimVal[aIndex == eFirst ? 0 : 1]; } // Returns true if the animated value of this number has been explicitly // set (either by animation, or by taking on the base value which has been // explicitly set by markup or a DOM call), false otherwise. // If this returns false, the animated value is still valid, that is, // useable, and represents the default base value of the attribute. bool IsExplicitlySet() const { return mIsAnimated || mIsBaseSet; } already_AddRefed<mozilla::dom::SVGAnimatedNumber> ToDOMAnimatedNumber(PairIndex aIndex, nsSVGElement* aSVGElement); // Returns a new nsISMILAttr object that the caller must delete nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement); private: float mAnimVal[2]; float mBaseVal[2]; uint8_t mAttrEnum; // element specified tracking for attribute bool mIsAnimated; bool mIsBaseSet; public: struct DOMAnimatedNumber final : public mozilla::dom::SVGAnimatedNumber { DOMAnimatedNumber(nsSVGNumberPair* aVal, PairIndex aIndex, nsSVGElement *aSVGElement) : mozilla::dom::SVGAnimatedNumber(aSVGElement) , mVal(aVal) , mIndex(aIndex) {} virtual ~DOMAnimatedNumber(); nsSVGNumberPair* mVal; // kept alive because it belongs to content PairIndex mIndex; // are we the first or second number virtual float BaseVal() override { return mVal->GetBaseValue(mIndex); } virtual void SetBaseVal(float aValue) override { MOZ_ASSERT(mozilla::IsFinite(aValue)); mVal->SetBaseValue(aValue, mIndex, mSVGElement); } // Script may have modified animation parameters or timeline -- DOM getters // need to flush any resample requests to reflect these modifications. virtual float AnimVal() override { mSVGElement->FlushAnimations(); return mVal->GetAnimValue(mIndex); } }; struct SMILNumberPair : public nsISMILAttr { public: SMILNumberPair(nsSVGNumberPair* aVal, nsSVGElement* aSVGElement) : mVal(aVal), mSVGElement(aSVGElement) {} // These will stay alive because a nsISMILAttr only lives as long // as the Compositing step, and DOM elements don't get a chance to // die during that. nsSVGNumberPair* mVal; nsSVGElement* mSVGElement; // nsISMILAttr methods virtual nsresult ValueFromString(const nsAString& aStr, const mozilla::dom::SVGAnimationElement* aSrcElement, nsSMILValue& aValue, bool& aPreventCachingOfSandwich) const override; virtual nsSMILValue GetBaseValue() const override; virtual void ClearAnimValue() override; virtual nsresult SetAnimValue(const nsSMILValue& aValue) override; }; }; #endif //__NS_SVGNUMBERPAIR_H__