diff options
Diffstat (limited to 'dom/svg/SVGNumberPairSMILType.cpp')
-rw-r--r-- | dom/svg/SVGNumberPairSMILType.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/dom/svg/SVGNumberPairSMILType.cpp b/dom/svg/SVGNumberPairSMILType.cpp new file mode 100644 index 000000000..e314dfcf1 --- /dev/null +++ b/dom/svg/SVGNumberPairSMILType.cpp @@ -0,0 +1,108 @@ +/* -*- 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 "SVGNumberPairSMILType.h" +#include "nsSMILValue.h" +#include "nsMathUtils.h" +#include "nsDebug.h" + +namespace mozilla { + +/*static*/ SVGNumberPairSMILType SVGNumberPairSMILType::sSingleton; + +void +SVGNumberPairSMILType::Init(nsSMILValue& aValue) const +{ + MOZ_ASSERT(aValue.IsNull(), "Unexpected value type"); + + aValue.mU.mNumberPair[0] = 0; + aValue.mU.mNumberPair[1] = 0; + aValue.mType = this; +} + +void +SVGNumberPairSMILType::Destroy(nsSMILValue& aValue) const +{ + NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value"); + aValue.mU.mNumberPair[0] = 0; + aValue.mU.mNumberPair[1] = 0; + aValue.mType = nsSMILNullType::Singleton(); +} + +nsresult +SVGNumberPairSMILType::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.mNumberPair[0] = aSrc.mU.mNumberPair[0]; + aDest.mU.mNumberPair[1] = aSrc.mU.mNumberPair[1]; + return NS_OK; +} + +bool +SVGNumberPairSMILType::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.mNumberPair[0] == aRight.mU.mNumberPair[0] && + aLeft.mU.mNumberPair[1] == aRight.mU.mNumberPair[1]; +} + +nsresult +SVGNumberPairSMILType::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.mNumberPair[0] += aValueToAdd.mU.mNumberPair[0] * aCount; + aDest.mU.mNumberPair[1] += aValueToAdd.mU.mNumberPair[1] * aCount; + + return NS_OK; +} + +nsresult +SVGNumberPairSMILType::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"); + + double delta[2]; + delta[0] = aTo.mU.mNumberPair[0] - aFrom.mU.mNumberPair[0]; + delta[1] = aTo.mU.mNumberPair[1] - aFrom.mU.mNumberPair[1]; + + aDistance = NS_hypot(delta[0], delta[1]); + return NS_OK; +} + +nsresult +SVGNumberPairSMILType::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"); + + aResult.mU.mNumberPair[0] = + float(aStartVal.mU.mNumberPair[0] + + (aEndVal.mU.mNumberPair[0] - aStartVal.mU.mNumberPair[0]) * aUnitDistance); + aResult.mU.mNumberPair[1] = + float(aStartVal.mU.mNumberPair[1] + + (aEndVal.mU.mNumberPair[1] - aStartVal.mU.mNumberPair[1]) * aUnitDistance); + return NS_OK; +} + +} // namespace mozilla |