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