diff options
Diffstat (limited to 'dom/svg/SVGLengthSMILType.cpp')
-rw-r--r-- | dom/svg/SVGLengthSMILType.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/dom/svg/SVGLengthSMILType.cpp b/dom/svg/SVGLengthSMILType.cpp new file mode 100644 index 0000000000..45650a602e --- /dev/null +++ b/dom/svg/SVGLengthSMILType.cpp @@ -0,0 +1,103 @@ +/* -*- 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 "SVGLengthSMILType.h" + +#include "mozilla/SMILValue.h" +#include "SVGAnimatedLengthList.h" +#include "nsDebug.h" +#include <math.h> + +namespace mozilla { + +using namespace dom::SVGLength_Binding; + +void SVGLengthSMILType::Init(SMILValue& aValue) const { + MOZ_ASSERT(aValue.IsNull(), "Unexpected value type"); + + aValue.mU.mPtr = new SVGLengthAndInfo(); + aValue.mType = this; +} + +void SVGLengthSMILType::Destroy(SMILValue& aValue) const { + MOZ_ASSERT(aValue.mType == this, "Unexpected SMIL value"); + delete static_cast<SVGLengthAndInfo*>(aValue.mU.mPtr); + aValue.mU.mPtr = nullptr; + aValue.mType = SMILNullType::Singleton(); +} + +nsresult SVGLengthSMILType::Assign(SMILValue& aDest, + const SMILValue& aSrc) const { + MOZ_ASSERT(aDest.mType == aSrc.mType, "Incompatible SMIL types"); + MOZ_ASSERT(aDest.mType == this, "Unexpected SMIL value"); + + auto* src = static_cast<const SVGLengthAndInfo*>(aSrc.mU.mPtr); + auto* dest = static_cast<SVGLengthAndInfo*>(aDest.mU.mPtr); + dest->CopyFrom(*src); + + return NS_OK; +} + +bool SVGLengthSMILType::IsEqual(const SMILValue& aLeft, + const SMILValue& aRight) const { + MOZ_ASSERT(aLeft.mType == aRight.mType, "Incompatible SMIL types"); + MOZ_ASSERT(aLeft.mType == this, "Unexpected type for SMIL value"); + + return *static_cast<const SVGLengthAndInfo*>(aLeft.mU.mPtr) == + *static_cast<const SVGLengthAndInfo*>(aRight.mU.mPtr); +} + +nsresult SVGLengthSMILType::Add(SMILValue& aDest, const SMILValue& aValueToAdd, + uint32_t aCount) const { + MOZ_ASSERT(aValueToAdd.mType == aDest.mType, "Trying to add invalid types"); + MOZ_ASSERT(aValueToAdd.mType == this, "Unexpected source type"); + + auto& dest = *static_cast<SVGLengthAndInfo*>(aDest.mU.mPtr); + const auto& valueToAdd = + *static_cast<const SVGLengthAndInfo*>(aValueToAdd.mU.mPtr); + + dest.Add(valueToAdd, aCount); + return NS_OK; +} + +nsresult SVGLengthSMILType::ComputeDistance(const SMILValue& aFrom, + const SMILValue& aTo, + double& aDistance) const { + MOZ_ASSERT(aFrom.mType == aTo.mType, "Trying to compare different types"); + MOZ_ASSERT(aFrom.mType == this, "Unexpected source type"); + + const auto& from = *static_cast<SVGLengthAndInfo*>(aFrom.mU.mPtr); + const auto& to = *static_cast<const SVGLengthAndInfo*>(aTo.mU.mPtr); + + MOZ_ASSERT(from.Element() == to.Element()); + + dom::SVGElementMetrics metrics(from.Element()); + + // Normalize both to pixels in case they're different units: + aDistance = fabs(to.ValueInPixels(metrics) - from.ValueInPixels(metrics)); + + return NS_OK; +} + +nsresult SVGLengthSMILType::Interpolate(const SMILValue& aStartVal, + const SMILValue& aEndVal, + double aUnitDistance, + SMILValue& aResult) const { + MOZ_ASSERT(aStartVal.mType == aEndVal.mType, + "Trying to interpolate different types"); + MOZ_ASSERT(aStartVal.mType == this, "Unexpected types for interpolation"); + MOZ_ASSERT(aResult.mType == this, "Unexpected result type"); + + const auto& start = *static_cast<SVGLengthAndInfo*>(aStartVal.mU.mPtr); + const auto& end = *static_cast<const SVGLengthAndInfo*>(aEndVal.mU.mPtr); + auto& result = *static_cast<SVGLengthAndInfo*>(aResult.mU.mPtr); + + SVGLengthAndInfo::Interpolate(start, end, aUnitDistance, result); + + return NS_OK; +} + +} // namespace mozilla |