gecko-dev/dom/svg/nsSVGBoolean.cpp

185 строки
4.3 KiB
C++

/* -*- 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 "nsError.h"
#include "nsSVGAttrTearoffTable.h"
#include "nsSVGBoolean.h"
#include "nsSMILValue.h"
#include "SMILBoolType.h"
#include "SVGAnimatedBoolean.h"
using namespace mozilla;
using namespace mozilla::dom;
/* Implementation */
static inline
nsSVGAttrTearoffTable<nsSVGBoolean, SVGAnimatedBoolean>&
SVGAnimatedBooleanTearoffTable()
{
static nsSVGAttrTearoffTable<nsSVGBoolean, SVGAnimatedBoolean>
sSVGAnimatedBooleanTearoffTable;
return sSVGAnimatedBooleanTearoffTable;
}
static bool
GetValueFromString(const nsAString& aValueAsString,
bool& aValue)
{
if (aValueAsString.EqualsLiteral("true")) {
aValue = true;
return true;
}
if (aValueAsString.EqualsLiteral("false")) {
aValue = false;
return true;
}
return false;
}
static nsresult
GetValueFromAtom(const nsIAtom* aValueAsAtom, bool *aValue)
{
if (aValueAsAtom == nsGkAtoms::_true) {
*aValue = true;
return NS_OK;
}
if (aValueAsAtom == nsGkAtoms::_false) {
*aValue = false;
return NS_OK;
}
return NS_ERROR_DOM_SYNTAX_ERR;
}
nsresult
nsSVGBoolean::SetBaseValueAtom(const nsIAtom* aValue, nsSVGElement *aSVGElement)
{
bool val = false;
nsresult rv = GetValueFromAtom(aValue, &val);
if (NS_FAILED(rv)) {
return rv;
}
mBaseVal = val;
if (!mIsAnimated) {
mAnimVal = mBaseVal;
}
else {
aSVGElement->AnimationNeedsResample();
}
// We don't need to call DidChange* here - we're only called by
// nsSVGElement::ParseAttribute under Element::SetAttr,
// which takes care of notifying.
return NS_OK;
}
nsIAtom*
nsSVGBoolean::GetBaseValueAtom() const
{
return mBaseVal ? nsGkAtoms::_true : nsGkAtoms::_false;
}
void
nsSVGBoolean::SetBaseValue(bool aValue, nsSVGElement *aSVGElement)
{
if (aValue == mBaseVal) {
return;
}
mBaseVal = aValue;
if (!mIsAnimated) {
mAnimVal = mBaseVal;
} else {
aSVGElement->AnimationNeedsResample();
}
aSVGElement->DidChangeBoolean(mAttrEnum);
}
void
nsSVGBoolean::SetAnimValue(bool aValue, nsSVGElement *aSVGElement)
{
if (mIsAnimated && mAnimVal == aValue) {
return;
}
mAnimVal = aValue;
mIsAnimated = true;
aSVGElement->DidAnimateBoolean(mAttrEnum);
}
already_AddRefed<SVGAnimatedBoolean>
nsSVGBoolean::ToDOMAnimatedBoolean(nsSVGElement* aSVGElement)
{
nsRefPtr<SVGAnimatedBoolean> domAnimatedBoolean =
SVGAnimatedBooleanTearoffTable().GetTearoff(this);
if (!domAnimatedBoolean) {
domAnimatedBoolean = new SVGAnimatedBoolean(this, aSVGElement);
SVGAnimatedBooleanTearoffTable().AddTearoff(this, domAnimatedBoolean);
}
return domAnimatedBoolean.forget();
}
SVGAnimatedBoolean::~SVGAnimatedBoolean()
{
SVGAnimatedBooleanTearoffTable().RemoveTearoff(mVal);
}
nsISMILAttr*
nsSVGBoolean::ToSMILAttr(nsSVGElement *aSVGElement)
{
return new SMILBool(this, aSVGElement);
}
nsresult
nsSVGBoolean::SMILBool::ValueFromString(const nsAString& aStr,
const SVGAnimationElement* /*aSrcElement*/,
nsSMILValue& aValue,
bool& aPreventCachingOfSandwich) const
{
bool value;
if (!GetValueFromString(aStr, value)) {
return NS_ERROR_DOM_SYNTAX_ERR;
}
nsSMILValue val(SMILBoolType::Singleton());
val.mU.mBool = value;
aValue = val;
aPreventCachingOfSandwich = false;
return NS_OK;
}
nsSMILValue
nsSVGBoolean::SMILBool::GetBaseValue() const
{
nsSMILValue val(SMILBoolType::Singleton());
val.mU.mBool = mVal->mBaseVal;
return val;
}
void
nsSVGBoolean::SMILBool::ClearAnimValue()
{
if (mVal->mIsAnimated) {
mVal->mIsAnimated = false;
mVal->mAnimVal = mVal->mBaseVal;
mSVGElement->DidAnimateBoolean(mVal->mAttrEnum);
}
}
nsresult
nsSVGBoolean::SMILBool::SetAnimValue(const nsSMILValue& aValue)
{
NS_ASSERTION(aValue.mType == SMILBoolType::Singleton(),
"Unexpected type to assign animated value");
if (aValue.mType == SMILBoolType::Singleton()) {
mVal->SetAnimValue(uint16_t(aValue.mU.mBool), mSVGElement);
}
return NS_OK;
}