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/* -*- 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
#include "SVGAnimatedNumberPair.h"
#include "nsCharSeparatedTokenizer.h"
#include "SVGAttrTearoffTable.h"
#include "SVGNumberPairSMILType.h"
#include "mozilla/SMILValue.h"
#include "mozilla/SVGContentUtils.h"
#include "nsContentUtils.h"
using namespace mozilla::dom;
namespace mozilla {
//----------------------------------------------------------------------
// Helper class: AutoChangeNumberPairNotifier
// Stack-based helper class to pair calls to WillChangeNumberPair and
// DidChangeNumberPair.
class MOZ_RAII AutoChangeNumberPairNotifier {
public:
AutoChangeNumberPairNotifier(SVGAnimatedNumberPair* aNumberPair,
SVGElement* aSVGElement, bool aDoSetAttr = true)
: mNumberPair(aNumberPair),
mSVGElement(aSVGElement),
mDoSetAttr(aDoSetAttr) {
MOZ_ASSERT(mNumberPair, "Expecting non-null numberPair");
MOZ_ASSERT(mSVGElement, "Expecting non-null element");
if (mDoSetAttr) {
mEmptyOrOldValue =
mSVGElement->WillChangeNumberPair(mNumberPair->mAttrEnum);
}
}
~AutoChangeNumberPairNotifier() {
if (mDoSetAttr) {
mSVGElement->DidChangeNumberPair(mNumberPair->mAttrEnum,
mEmptyOrOldValue);
}
if (mNumberPair->mIsAnimated) {
mSVGElement->AnimationNeedsResample();
}
}
private:
SVGAnimatedNumberPair* const mNumberPair;
SVGElement* const mSVGElement;
nsAttrValue mEmptyOrOldValue;
bool mDoSetAttr;
};
MOZ_CONSTINIT static SVGAttrTearoffTable<
SVGAnimatedNumberPair, SVGAnimatedNumberPair::DOMAnimatedNumber>
sSVGFirstAnimatedNumberTearoffTable;
MOZ_CONSTINIT static SVGAttrTearoffTable<
SVGAnimatedNumberPair, SVGAnimatedNumberPair::DOMAnimatedNumber>
sSVGSecondAnimatedNumberTearoffTable;
static nsresult ParseNumberOptionalNumber(const nsAString& aValue,
float aValues[2]) {
nsCharSeparatedTokenizerTemplate<nsContentUtils::IsHTMLWhitespace,
nsTokenizerFlags::SeparatorOptional>
tokenizer(aValue, ',');
uint32_t i;
for (i = 0; i < 2 && tokenizer.hasMoreTokens(); ++i) {
if (!SVGContentUtils::ParseNumber(tokenizer.nextToken(), aValues[i])) {
return NS_ERROR_DOM_SYNTAX_ERR;
}
}
if (i == 1) {
aValues[1] = aValues[0];
}
if (i == 0 || // Too few values.
tokenizer.hasMoreTokens() || // Too many values.
tokenizer.separatorAfterCurrentToken()) { // Trailing comma.
return NS_ERROR_DOM_SYNTAX_ERR;
}
return NS_OK;
}
nsresult SVGAnimatedNumberPair::SetBaseValueString(
const nsAString& aValueAsString, SVGElement* aSVGElement) {
float val[2];
nsresult rv = ParseNumberOptionalNumber(aValueAsString, val);
if (NS_FAILED(rv)) {
return rv;
}
// We don't need to call Will/DidChange* here - we're only called by
// SVGElement::ParseAttribute under Element::SetAttr,
// which takes care of notifying.
AutoChangeNumberPairNotifier notifier(this, aSVGElement, false);
mBaseVal[0] = val[0];
mBaseVal[1] = val[1];
mIsBaseSet = true;
if (!mIsAnimated) {
mAnimVal[0] = mBaseVal[0];
mAnimVal[1] = mBaseVal[1];
}
return NS_OK;
}
void SVGAnimatedNumberPair::GetBaseValueString(
nsAString& aValueAsString) const {
aValueAsString.Truncate();
aValueAsString.AppendFloat(mBaseVal[0]);
if (mBaseVal[0] != mBaseVal[1]) {
aValueAsString.AppendLiteral(", ");
aValueAsString.AppendFloat(mBaseVal[1]);
}
}
void SVGAnimatedNumberPair::SetBaseValue(float aValue, PairIndex aPairIndex,
SVGElement* aSVGElement) {
uint32_t index = (aPairIndex == eFirst ? 0 : 1);
if (mIsBaseSet && mBaseVal[index] == aValue) {
return;
}
AutoChangeNumberPairNotifier notifier(this, aSVGElement);
mBaseVal[index] = aValue;
mIsBaseSet = true;
if (!mIsAnimated) {
mAnimVal[index] = aValue;
}
}
void SVGAnimatedNumberPair::SetBaseValues(float aValue1, float aValue2,
SVGElement* aSVGElement) {
if (mIsBaseSet && mBaseVal[0] == aValue1 && mBaseVal[1] == aValue2) {
return;
}
AutoChangeNumberPairNotifier notifier(this, aSVGElement);
mBaseVal[0] = aValue1;
mBaseVal[1] = aValue2;
mIsBaseSet = true;
if (!mIsAnimated) {
mAnimVal[0] = aValue1;
mAnimVal[1] = aValue2;
}
}
void SVGAnimatedNumberPair::SetAnimValue(const float aValue[2],
SVGElement* aSVGElement) {
if (mIsAnimated && mAnimVal[0] == aValue[0] && mAnimVal[1] == aValue[1]) {
return;
}
mAnimVal[0] = aValue[0];
mAnimVal[1] = aValue[1];
mIsAnimated = true;
aSVGElement->DidAnimateNumberPair(mAttrEnum);
}
already_AddRefed<DOMSVGAnimatedNumber>
SVGAnimatedNumberPair::ToDOMAnimatedNumber(PairIndex aIndex,
SVGElement* aSVGElement) {
RefPtr<DOMAnimatedNumber> domAnimatedNumber =
aIndex == eFirst ? sSVGFirstAnimatedNumberTearoffTable.GetTearoff(this)
: sSVGSecondAnimatedNumberTearoffTable.GetTearoff(this);
if (!domAnimatedNumber) {
domAnimatedNumber = new DOMAnimatedNumber(this, aIndex, aSVGElement);
if (aIndex == eFirst) {
sSVGFirstAnimatedNumberTearoffTable.AddTearoff(this, domAnimatedNumber);
} else {
sSVGSecondAnimatedNumberTearoffTable.AddTearoff(this, domAnimatedNumber);
}
}
return domAnimatedNumber.forget();
}
SVGAnimatedNumberPair::DOMAnimatedNumber::~DOMAnimatedNumber() {
if (mIndex == eFirst) {
sSVGFirstAnimatedNumberTearoffTable.RemoveTearoff(mVal);
} else {
sSVGSecondAnimatedNumberTearoffTable.RemoveTearoff(mVal);
}
}
UniquePtr<SMILAttr> SVGAnimatedNumberPair::ToSMILAttr(SVGElement* aSVGElement) {
return MakeUnique<SMILNumberPair>(this, aSVGElement);
}
nsresult SVGAnimatedNumberPair::SMILNumberPair::ValueFromString(
const nsAString& aStr, const dom::SVGAnimationElement* /*aSrcElement*/,
SMILValue& aValue, bool& aPreventCachingOfSandwich) const {
float values[2];
nsresult rv = ParseNumberOptionalNumber(aStr, values);
if (NS_FAILED(rv)) {
return rv;
}
SMILValue val(&SVGNumberPairSMILType::sSingleton);
val.mU.mNumberPair[0] = values[0];
val.mU.mNumberPair[1] = values[1];
aValue = val;
return NS_OK;
}
SMILValue SVGAnimatedNumberPair::SMILNumberPair::GetBaseValue() const {
SMILValue val(&SVGNumberPairSMILType::sSingleton);
val.mU.mNumberPair[0] = mVal->mBaseVal[0];
val.mU.mNumberPair[1] = mVal->mBaseVal[1];
return val;
}
void SVGAnimatedNumberPair::SMILNumberPair::ClearAnimValue() {
if (mVal->mIsAnimated) {
mVal->mIsAnimated = false;
mVal->mAnimVal[0] = mVal->mBaseVal[0];
mVal->mAnimVal[1] = mVal->mBaseVal[1];
mSVGElement->DidAnimateNumberPair(mVal->mAttrEnum);
}
}
nsresult SVGAnimatedNumberPair::SMILNumberPair::SetAnimValue(
const SMILValue& aValue) {
NS_ASSERTION(aValue.mType == &SVGNumberPairSMILType::sSingleton,
"Unexpected type to assign animated value");
if (aValue.mType == &SVGNumberPairSMILType::sSingleton) {
mVal->SetAnimValue(aValue.mU.mNumberPair, mSVGElement);
}
return NS_OK;
}
} // namespace mozilla