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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SVGLengthSMILType.h"
#include "mozilla/SMILValue.h"
#include "SVGAnimatedLengthList.h"
#include "nsDebug.h"
#include <math.h>
namespace mozilla {
using namespace dom::SVGLength_Binding;
void SVGLengthSMILType::Init(SMILValue& aValue) const {
MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
aValue.mU.mPtr = new SVGLengthAndInfo();
aValue.mType = this;
}
void SVGLengthSMILType::Destroy(SMILValue& aValue) const {
MOZ_ASSERT(aValue.mType == this, "Unexpected SMIL value");
delete static_cast<SVGLengthAndInfo*>(aValue.mU.mPtr);
aValue.mU.mPtr = nullptr;
aValue.mType = SMILNullType::Singleton();
}
nsresult SVGLengthSMILType::Assign(SMILValue& aDest,
const SMILValue& aSrc) const {
MOZ_ASSERT(aDest.mType == aSrc.mType, "Incompatible SMIL types");
MOZ_ASSERT(aDest.mType == this, "Unexpected SMIL value");
auto* src = static_cast<const SVGLengthAndInfo*>(aSrc.mU.mPtr);
auto* dest = static_cast<SVGLengthAndInfo*>(aDest.mU.mPtr);
dest->CopyFrom(*src);
return NS_OK;
}
bool SVGLengthSMILType::IsEqual(const SMILValue& aLeft,
const SMILValue& aRight) const {
MOZ_ASSERT(aLeft.mType == aRight.mType, "Incompatible SMIL types");
MOZ_ASSERT(aLeft.mType == this, "Unexpected type for SMIL value");
return *static_cast<const SVGLengthAndInfo*>(aLeft.mU.mPtr) ==
*static_cast<const SVGLengthAndInfo*>(aRight.mU.mPtr);
}
nsresult SVGLengthSMILType::Add(SMILValue& aDest, const SMILValue& aValueToAdd,
uint32_t aCount) const {
MOZ_ASSERT(aValueToAdd.mType == aDest.mType, "Trying to add invalid types");
MOZ_ASSERT(aValueToAdd.mType == this, "Unexpected source type");
auto& dest = *static_cast<SVGLengthAndInfo*>(aDest.mU.mPtr);
const auto& valueToAdd =
*static_cast<const SVGLengthAndInfo*>(aValueToAdd.mU.mPtr);
dest.Add(valueToAdd, aCount);
return NS_OK;
}
nsresult SVGLengthSMILType::ComputeDistance(const SMILValue& aFrom,
const SMILValue& aTo,
double& aDistance) const {
MOZ_ASSERT(aFrom.mType == aTo.mType, "Trying to compare different types");
MOZ_ASSERT(aFrom.mType == this, "Unexpected source type");
const auto& from = *static_cast<SVGLengthAndInfo*>(aFrom.mU.mPtr);
const auto& to = *static_cast<const SVGLengthAndInfo*>(aTo.mU.mPtr);
MOZ_ASSERT(from.Element() == to.Element());
dom::SVGElementMetrics metrics(from.Element());
// Normalize both to pixels in case they're different units:
aDistance = fabs(to.ValueInPixels(metrics) - from.ValueInPixels(metrics));
return NS_OK;
}
nsresult SVGLengthSMILType::Interpolate(const SMILValue& aStartVal,
const SMILValue& aEndVal,
double aUnitDistance,
SMILValue& aResult) const {
MOZ_ASSERT(aStartVal.mType == aEndVal.mType,
"Trying to interpolate different types");
MOZ_ASSERT(aStartVal.mType == this, "Unexpected types for interpolation");
MOZ_ASSERT(aResult.mType == this, "Unexpected result type");
const auto& start = *static_cast<SVGLengthAndInfo*>(aStartVal.mU.mPtr);
const auto& end = *static_cast<const SVGLengthAndInfo*>(aEndVal.mU.mPtr);
auto& result = *static_cast<SVGLengthAndInfo*>(aResult.mU.mPtr);
SVGLengthAndInfo::Interpolate(start, end, aUnitDistance, result);
return NS_OK;
}
} // namespace mozilla
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