The Tor Browser: dom/smil/SMILEnumType.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

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

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "SMILEnumType.h"

     7 #include "nsSMILValue.h"

     8 #include "nsDebug.h"

     9 #include <math.h>

    11 namespace mozilla {

    13 void

    14 SMILEnumType::Init(nsSMILValue& aValue) const

    15 {

    16   NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");

    17   aValue.mU.mUint = 0;

    18   aValue.mType = this;

    19 }

    21 void

    22 SMILEnumType::Destroy(nsSMILValue& aValue) const

    23 {

    24   NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");

    25   aValue.mU.mUint = 0;

    26   aValue.mType = nsSMILNullType::Singleton();

    27 }

    29 nsresult

    30 SMILEnumType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const

    31 {

    32   NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");

    33   NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");

    34   aDest.mU.mUint = aSrc.mU.mUint;

    35   return NS_OK;

    36 }

    38 bool

    39 SMILEnumType::IsEqual(const nsSMILValue& aLeft,

    40                       const nsSMILValue& aRight) const

    41 {

    42   NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");

    43   NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");

    45   return aLeft.mU.mUint == aRight.mU.mUint;

    46 }

    48 nsresult

    49 SMILEnumType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,

    50                   uint32_t aCount) const

    51 {

    52   NS_PRECONDITION(aValueToAdd.mType == aDest.mType,

    53                   "Trying to add invalid types");

    54   NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");

    55   return NS_ERROR_FAILURE; // enum values can't be added to each other

    56 }

    58 nsresult

    59 SMILEnumType::ComputeDistance(const nsSMILValue& aFrom,

    60                               const nsSMILValue& aTo,

    61                               double& aDistance) const

    62 {

    63   NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");

    64   NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");

    65   return NS_ERROR_FAILURE; // there is no concept of distance between enum values

    66 }

    68 nsresult

    69 SMILEnumType::Interpolate(const nsSMILValue& aStartVal,

    70                           const nsSMILValue& aEndVal,

    71                           double aUnitDistance,

    72                           nsSMILValue& aResult) const

    73 {

    74   NS_PRECONDITION(aStartVal.mType == aEndVal.mType,

    75       "Trying to interpolate different types");

    76   NS_PRECONDITION(aStartVal.mType == this,

    77       "Unexpected types for interpolation");

    78   NS_PRECONDITION(aResult.mType   == this, "Unexpected result type");

    79   return NS_ERROR_FAILURE; // enum values do not interpolate

    80 }

    82 } // namespace mozilla

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