зеркало из https://github.com/mozilla/gecko-dev.git
102 строки
3.7 KiB
C++
102 строки
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SVGLengthSMILType.h"
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#include "mozilla/SMILValue.h"
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#include "SVGAnimatedLengthList.h"
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#include "nsDebug.h"
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#include <math.h>
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namespace mozilla {
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void SVGLengthSMILType::Init(SMILValue& aValue) const {
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MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
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aValue.mU.mPtr = new SVGLengthAndInfo();
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aValue.mType = this;
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}
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void SVGLengthSMILType::Destroy(SMILValue& aValue) const {
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MOZ_ASSERT(aValue.mType == this, "Unexpected SMIL value");
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delete static_cast<SVGLengthAndInfo*>(aValue.mU.mPtr);
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aValue.mU.mPtr = nullptr;
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aValue.mType = SMILNullType::Singleton();
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}
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nsresult SVGLengthSMILType::Assign(SMILValue& aDest,
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const SMILValue& aSrc) const {
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MOZ_ASSERT(aDest.mType == aSrc.mType, "Incompatible SMIL types");
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MOZ_ASSERT(aDest.mType == this, "Unexpected SMIL value");
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auto* src = static_cast<const SVGLengthAndInfo*>(aSrc.mU.mPtr);
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auto* dest = static_cast<SVGLengthAndInfo*>(aDest.mU.mPtr);
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dest->CopyFrom(*src);
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return NS_OK;
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}
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bool SVGLengthSMILType::IsEqual(const SMILValue& aLeft,
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const SMILValue& aRight) const {
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MOZ_ASSERT(aLeft.mType == aRight.mType, "Incompatible SMIL types");
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MOZ_ASSERT(aLeft.mType == this, "Unexpected type for SMIL value");
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return *static_cast<const SVGLengthAndInfo*>(aLeft.mU.mPtr) ==
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*static_cast<const SVGLengthAndInfo*>(aRight.mU.mPtr);
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}
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nsresult SVGLengthSMILType::Add(SMILValue& aDest, const SMILValue& aValueToAdd,
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uint32_t aCount) const {
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MOZ_ASSERT(aValueToAdd.mType == aDest.mType, "Trying to add invalid types");
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MOZ_ASSERT(aValueToAdd.mType == this, "Unexpected source type");
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auto& dest = *static_cast<SVGLengthAndInfo*>(aDest.mU.mPtr);
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const auto& valueToAdd =
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*static_cast<const SVGLengthAndInfo*>(aValueToAdd.mU.mPtr);
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dest.Add(valueToAdd, aCount);
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return NS_OK;
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}
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nsresult SVGLengthSMILType::ComputeDistance(const SMILValue& aFrom,
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const SMILValue& aTo,
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double& aDistance) const {
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MOZ_ASSERT(aFrom.mType == aTo.mType, "Trying to compare different types");
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MOZ_ASSERT(aFrom.mType == this, "Unexpected source type");
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const auto& from = *static_cast<SVGLengthAndInfo*>(aFrom.mU.mPtr);
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const auto& to = *static_cast<const SVGLengthAndInfo*>(aTo.mU.mPtr);
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MOZ_ASSERT(from.Element() == to.Element());
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dom::SVGElementMetrics metrics(from.Element());
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// Normalize both to pixels in case they're different units:
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aDistance = fabs(to.ValueInPixels(metrics) - from.ValueInPixels(metrics));
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return NS_OK;
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}
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nsresult SVGLengthSMILType::Interpolate(const SMILValue& aStartVal,
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const SMILValue& aEndVal,
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double aUnitDistance,
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SMILValue& aResult) const {
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MOZ_ASSERT(aStartVal.mType == aEndVal.mType,
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"Trying to interpolate different types");
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MOZ_ASSERT(aStartVal.mType == this, "Unexpected types for interpolation");
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MOZ_ASSERT(aResult.mType == this, "Unexpected result type");
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const auto& start = *static_cast<SVGLengthAndInfo*>(aStartVal.mU.mPtr);
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const auto& end = *static_cast<const SVGLengthAndInfo*>(aEndVal.mU.mPtr);
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auto& result = *static_cast<SVGLengthAndInfo*>(aResult.mU.mPtr);
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SVGLengthAndInfo::Interpolate(start, end, aUnitDistance, result);
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return NS_OK;
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}
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} // namespace mozilla
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