/* -*- 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 DOM_SVG_SVGANIMATEDNUMBERPAIR_H_
#define DOM_SVG_SVGANIMATEDNUMBERPAIR_H_
#include "DOMSVGAnimatedNumber.h"
#include "nsCycleCollectionParticipant.h"
#include "nsError.h"
#include "nsMathUtils.h"
#include "mozilla/Attributes.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/SMILAttr.h"
#include "mozilla/UniquePtr.h"
namespace mozilla {
class SMILValue;
namespace dom {
class SVGAnimationElement;
class SVGElement;
}
// namespace dom
class SVGAnimatedNumberPair {
public:
friend class AutoChangeNumberPairNotifier;
using SVGElement = dom::SVGElement;
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, SVGElement* aSVGElement);
void GetBaseValueString(nsAString& aValue)
const;
void SetBaseValue(
float aValue, PairIndex aPairIndex,
SVGElement* aSVGElement);
void SetBaseValues(
float aValue1,
float aValue2, SVGElement* aSVGElement);
float GetBaseValue(PairIndex aIndex)
const {
return mBaseVal[aIndex == eFirst ? 0 : 1];
}
void SetAnimValue(
const float aValue[2], SVGElement* 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,
// usable, and represents the default base value of the attribute.
bool IsExplicitlySet()
const {
return mIsAnimated || mIsBaseSet; }
already_AddRefed<dom::DOMSVGAnimatedNumber> ToDOMAnimatedNumber(
PairIndex aIndex, SVGElement* aSVGElement);
UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
private:
float mAnimVal[2];
float mBaseVal[2];
uint8_t mAttrEnum;
// element specified tracking for attribute
bool mIsAnimated;
bool mIsBaseSet;
public:
// DOM wrapper class for the (DOM)SVGAnimatedNumber interface where the
// wrapped class is SVGAnimatedNumberPair.
struct DOMAnimatedNumber final :
public dom::DOMSVGAnimatedNumber {
DOMAnimatedNumber(SVGAnimatedNumberPair* aVal, PairIndex aIndex,
SVGElement* aSVGElement)
: dom::DOMSVGAnimatedNumber(aSVGElement), mVal(aVal), mIndex(aIndex) {}
virtual ~DOMAnimatedNumber();
SVGAnimatedNumberPair* mVal;
// kept alive because it belongs to content
PairIndex mIndex;
// are we the first or second number
float BaseVal() override {
return mVal->GetBaseValue(mIndex); }
void SetBaseVal(
float aValue) override {
MOZ_ASSERT(std::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.
float AnimVal() override {
mSVGElement->FlushAnimations();
return mVal->GetAnimValue(mIndex);
}
};
struct SMILNumberPair :
public SMILAttr {
public:
SMILNumberPair(SVGAnimatedNumberPair* aVal, SVGElement* aSVGElement)
: mVal(aVal), mSVGElement(aSVGElement) {}
// These will stay alive because a SMILAttr only lives as long
// as the Compositing step, and DOM elements don't get a chance to
// die during that.
SVGAnimatedNumberPair* mVal;
SVGElement* mSVGElement;
// SMILAttr methods
nsresult ValueFromString(
const nsAString& aStr,
const dom::SVGAnimationElement* aSrcElement,
SMILValue& aValue,
bool& aPreventCachingOfSandwich)
const override;
SMILValue GetBaseValue()
const override;
void ClearAnimValue() override;
nsresult SetAnimValue(
const SMILValue& aValue) override;
};
};
}
// namespace mozilla
#endif // DOM_SVG_SVGANIMATEDNUMBERPAIR_H_
