Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "SVGIntegerPairSMILType.h"
       8             : #include "nsSMILValue.h"
       9             : #include "nsMathUtils.h"
      10             : #include "nsDebug.h"
      11             : 
      12             : namespace mozilla {
      13             : 
      14             : void
      15           0 : SVGIntegerPairSMILType::Init(nsSMILValue& aValue) const
      16             : {
      17           0 :   MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
      18             : 
      19           0 :   aValue.mU.mIntPair[0] = 0;
      20           0 :   aValue.mU.mIntPair[1] = 0;
      21           0 :   aValue.mType = this;
      22           0 : }
      23             : 
      24             : void
      25           0 : SVGIntegerPairSMILType::Destroy(nsSMILValue& aValue) const
      26             : {
      27           0 :   NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
      28           0 :   aValue.mU.mIntPair[0] = 0;
      29           0 :   aValue.mU.mIntPair[1] = 0;
      30           0 :   aValue.mType = nsSMILNullType::Singleton();
      31           0 : }
      32             : 
      33             : nsresult
      34           0 : SVGIntegerPairSMILType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
      35             : {
      36           0 :   NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
      37           0 :   NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
      38             : 
      39           0 :   aDest.mU.mIntPair[0] = aSrc.mU.mIntPair[0];
      40           0 :   aDest.mU.mIntPair[1] = aSrc.mU.mIntPair[1];
      41           0 :   return NS_OK;
      42             : }
      43             : 
      44             : bool
      45           0 : SVGIntegerPairSMILType::IsEqual(const nsSMILValue& aLeft,
      46             :                                 const nsSMILValue& aRight) const
      47             : {
      48           0 :   NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
      49           0 :   NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
      50             : 
      51           0 :   return aLeft.mU.mIntPair[0] == aRight.mU.mIntPair[0] &&
      52           0 :          aLeft.mU.mIntPair[1] == aRight.mU.mIntPair[1];
      53             : }
      54             : 
      55             : nsresult
      56           0 : SVGIntegerPairSMILType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
      57             :                             uint32_t aCount) const
      58             : {
      59           0 :   NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
      60             :                   "Trying to add invalid types");
      61           0 :   NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
      62             : 
      63           0 :   aDest.mU.mIntPair[0] += aValueToAdd.mU.mIntPair[0] * aCount;
      64           0 :   aDest.mU.mIntPair[1] += aValueToAdd.mU.mIntPair[1] * aCount;
      65             : 
      66           0 :   return NS_OK;
      67             : }
      68             : 
      69             : nsresult
      70           0 : SVGIntegerPairSMILType::ComputeDistance(const nsSMILValue& aFrom,
      71             :                                         const nsSMILValue& aTo,
      72             :                                         double& aDistance) const
      73             : {
      74           0 :   NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
      75           0 :   NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
      76             : 
      77             :   double delta[2];
      78           0 :   delta[0] = aTo.mU.mIntPair[0] - aFrom.mU.mIntPair[0];
      79           0 :   delta[1] = aTo.mU.mIntPair[1] - aFrom.mU.mIntPair[1];
      80             : 
      81           0 :   aDistance = NS_hypot(delta[0], delta[1]);
      82           0 :   return NS_OK;
      83             : }
      84             : 
      85             : nsresult
      86           0 : SVGIntegerPairSMILType::Interpolate(const nsSMILValue& aStartVal,
      87             :                                     const nsSMILValue& aEndVal,
      88             :                                     double aUnitDistance,
      89             :                                     nsSMILValue& aResult) const
      90             : {
      91           0 :   NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
      92             :                   "Trying to interpolate different types");
      93           0 :   NS_PRECONDITION(aStartVal.mType == this,
      94             :                   "Unexpected types for interpolation");
      95           0 :   NS_PRECONDITION(aResult.mType == this, "Unexpected result type");
      96             : 
      97             :   double currentVal[2];
      98           0 :   currentVal[0] = aStartVal.mU.mIntPair[0] +
      99           0 :                   (aEndVal.mU.mIntPair[0] - aStartVal.mU.mIntPair[0]) * aUnitDistance;
     100           0 :   currentVal[1] = aStartVal.mU.mIntPair[1] +
     101           0 :                   (aEndVal.mU.mIntPair[1] - aStartVal.mU.mIntPair[1]) * aUnitDistance;
     102             : 
     103           0 :   aResult.mU.mIntPair[0] = NS_lround(currentVal[0]);
     104           0 :   aResult.mU.mIntPair[1] = NS_lround(currentVal[1]);
     105           0 :   return NS_OK;
     106             : }
     107             : 
     108             : } // namespace mozilla