The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/dom/smil/nsSMILFloatType.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,91 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "nsSMILFloatType.h"
    1.10 +#include "nsSMILValue.h"
    1.11 +#include "nsDebug.h"
    1.12 +#include <math.h>
    1.13 +
    1.14 +void
    1.15 +nsSMILFloatType::Init(nsSMILValue& aValue) const
    1.16 +{
    1.17 +  NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");
    1.18 +  aValue.mU.mDouble = 0.0;
    1.19 +  aValue.mType = this;
    1.20 +}
    1.21 +
    1.22 +void
    1.23 +nsSMILFloatType::Destroy(nsSMILValue& aValue) const
    1.24 +{
    1.25 +  NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
    1.26 +  aValue.mU.mDouble = 0.0;
    1.27 +  aValue.mType      = nsSMILNullType::Singleton();
    1.28 +}
    1.29 +
    1.30 +nsresult
    1.31 +nsSMILFloatType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
    1.32 +{
    1.33 +  NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
    1.34 +  NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
    1.35 +  aDest.mU.mDouble = aSrc.mU.mDouble;
    1.36 +  return NS_OK;
    1.37 +}
    1.38 +
    1.39 +bool
    1.40 +nsSMILFloatType::IsEqual(const nsSMILValue& aLeft,
    1.41 +                         const nsSMILValue& aRight) const
    1.42 +{
    1.43 +  NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
    1.44 +  NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
    1.45 +
    1.46 +  return aLeft.mU.mDouble == aRight.mU.mDouble;
    1.47 +}
    1.48 +
    1.49 +nsresult
    1.50 +nsSMILFloatType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
    1.51 +                     uint32_t aCount) const
    1.52 +{
    1.53 +  NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
    1.54 +                  "Trying to add invalid types");
    1.55 +  NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
    1.56 +  aDest.mU.mDouble += aValueToAdd.mU.mDouble * aCount;
    1.57 +  return NS_OK;
    1.58 +}
    1.59 +
    1.60 +nsresult
    1.61 +nsSMILFloatType::ComputeDistance(const nsSMILValue& aFrom,
    1.62 +                                 const nsSMILValue& aTo,
    1.63 +                                 double& aDistance) const
    1.64 +{
    1.65 +  NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
    1.66 +  NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
    1.67 +
    1.68 +  const double &from = aFrom.mU.mDouble;
    1.69 +  const double &to   = aTo.mU.mDouble;
    1.70 +
    1.71 +  aDistance = fabs(to - from);
    1.72 +
    1.73 +  return NS_OK;
    1.74 +}
    1.75 +
    1.76 +nsresult
    1.77 +nsSMILFloatType::Interpolate(const nsSMILValue& aStartVal,
    1.78 +                             const nsSMILValue& aEndVal,
    1.79 +                             double aUnitDistance,
    1.80 +                             nsSMILValue& aResult) const
    1.81 +{
    1.82 +  NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
    1.83 +      "Trying to interpolate different types");
    1.84 +  NS_PRECONDITION(aStartVal.mType == this,
    1.85 +      "Unexpected types for interpolation");
    1.86 +  NS_PRECONDITION(aResult.mType   == this, "Unexpected result type");
    1.87 +
    1.88 +  const double &startVal = aStartVal.mU.mDouble;
    1.89 +  const double &endVal   = aEndVal.mU.mDouble;
    1.90 +
    1.91 +  aResult.mU.mDouble = (startVal + (endVal - startVal) * aUnitDistance);
    1.92 +
    1.93 +  return NS_OK;
    1.94 +}