diff options
Diffstat (limited to 'dom/svg/SVGAnimatedNumberPair.cpp')
| -rw-r--r-- | dom/svg/SVGAnimatedNumberPair.cpp | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/dom/svg/SVGAnimatedNumberPair.cpp b/dom/svg/SVGAnimatedNumberPair.cpp new file mode 100644 index 0000000000..ffab25c6e9 --- /dev/null +++ b/dom/svg/SVGAnimatedNumberPair.cpp @@ -0,0 +1,242 @@ +/* -*- 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/. */ + +#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; +}; + +static SVGAttrTearoffTable<SVGAnimatedNumberPair, + SVGAnimatedNumberPair::DOMAnimatedNumber> + sSVGFirstAnimatedNumberTearoffTable; +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; + aPreventCachingOfSandwich = false; + + 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 |