content/smil/nsSMILFloatType.cpp
author Ehsan Akhgari <ehsan@mozilla.com>
Wed, 22 Aug 2012 11:56:38 -0400
changeset 103003 a16372ce30b5f6b747246b01fcd215a4bf3b6342
parent 94475 f4157e8c410708d76703f19e4dfb61859bfe32d8
child 106719 c4f83d9d8243f3f853a5356188164a5fddee2b5a
permissions -rw-r--r--
Bug 579517 - Part 1: Automated conversion of NSPR numeric types to stdint types in Gecko; r=bsmedberg This patch was generated by a script. Here's the source of the script for future reference: function convert() { echo "Converting $1 to $2..." find . ! -wholename "*nsprpub*" \ ! -wholename "*security/nss*" \ ! -wholename "*/.hg*" \ ! -wholename "obj-ff-dbg*" \ ! -name nsXPCOMCID.h \ ! -name prtypes.h \ -type f \ \( -iname "*.cpp" \ -o -iname "*.h" \ -o -iname "*.c" \ -o -iname "*.cc" \ -o -iname "*.idl" \ -o -iname "*.ipdl" \ -o -iname "*.ipdlh" \ -o -iname "*.mm" \) | \ xargs -n 1 sed -i -e "s/\b$1\b/$2/g" } convert PRInt8 int8_t convert PRUint8 uint8_t convert PRInt16 int16_t convert PRUint16 uint16_t convert PRInt32 int32_t convert PRUint32 uint32_t convert PRInt64 int64_t convert PRUint64 uint64_t convert PRIntn int convert PRUintn unsigned convert PRSize size_t convert PROffset32 int32_t convert PROffset64 int64_t convert PRPtrdiff ptrdiff_t convert PRFloat64 double

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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>

/*static*/ nsSMILFloatType nsSMILFloatType::sSingleton;

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::sSingleton;
}

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;
}