зеркало из https://github.com/mozilla/gecko-dev.git
93 строки
2.9 KiB
C++
93 строки
2.9 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 "nsSMILFloatType.h"
|
|
#include "nsSMILValue.h"
|
|
#include "nsDebug.h"
|
|
#include <math.h>
|
|
|
|
void
|
|
nsSMILFloatType::Init(nsSMILValue& aValue) const
|
|
{
|
|
NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");
|
|
aValue.mU.mDouble = 0.0;
|
|
aValue.mType = this;
|
|
}
|
|
|
|
void
|
|
nsSMILFloatType::Destroy(nsSMILValue& aValue) const
|
|
{
|
|
NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
|
|
aValue.mU.mDouble = 0.0;
|
|
aValue.mType = nsSMILNullType::Singleton();
|
|
}
|
|
|
|
nsresult
|
|
nsSMILFloatType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
|
|
{
|
|
NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
|
|
NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
|
|
aDest.mU.mDouble = aSrc.mU.mDouble;
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsSMILFloatType::IsEqual(const nsSMILValue& aLeft,
|
|
const nsSMILValue& aRight) const
|
|
{
|
|
NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
|
|
NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
|
|
|
|
return aLeft.mU.mDouble == aRight.mU.mDouble;
|
|
}
|
|
|
|
nsresult
|
|
nsSMILFloatType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
|
|
uint32_t aCount) const
|
|
{
|
|
NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
|
|
"Trying to add invalid types");
|
|
NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
|
|
aDest.mU.mDouble += aValueToAdd.mU.mDouble * aCount;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsSMILFloatType::ComputeDistance(const nsSMILValue& aFrom,
|
|
const nsSMILValue& aTo,
|
|
double& aDistance) const
|
|
{
|
|
NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
|
|
NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
|
|
|
|
const double &from = aFrom.mU.mDouble;
|
|
const double &to = aTo.mU.mDouble;
|
|
|
|
aDistance = fabs(to - from);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsSMILFloatType::Interpolate(const nsSMILValue& aStartVal,
|
|
const nsSMILValue& aEndVal,
|
|
double aUnitDistance,
|
|
nsSMILValue& aResult) const
|
|
{
|
|
NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
|
|
"Trying to interpolate different types");
|
|
NS_PRECONDITION(aStartVal.mType == this,
|
|
"Unexpected types for interpolation");
|
|
NS_PRECONDITION(aResult.mType == this, "Unexpected result type");
|
|
|
|
const double &startVal = aStartVal.mU.mDouble;
|
|
const double &endVal = aEndVal.mU.mDouble;
|
|
|
|
aResult.mU.mDouble = (startVal + (endVal - startVal) * aUnitDistance);
|
|
|
|
return NS_OK;
|
|
}
|