Use Length for the stroke-width property in SVGLayoutStyle

Source/core/animation/SVGLengthStyleInterpolation.cpp

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "config.h"
-#include "core/animation/SVGLengthStyleInterpolation.h"
-
-#include "core/css/resolver/StyleBuilder.h"
-
-namespace blink {
-
-bool SVGLengthStyleInterpolation::canCreateFrom(const CSSValue& value)
-{
-    if (!value.isPrimitiveValue())
-        return false;
-
-    switch (toCSSPrimitiveValue(value).primitiveType()) {
-    case CSSPrimitiveValue::CSS_NUMBER:
-    case CSSPrimitiveValue::CSS_PERCENTAGE:
-    case CSSPrimitiveValue::CSS_EMS:
-    case CSSPrimitiveValue::CSS_EXS:
-    case CSSPrimitiveValue::CSS_PX:
-    case CSSPrimitiveValue::CSS_CM:
-    case CSSPrimitiveValue::CSS_MM:
-    case CSSPrimitiveValue::CSS_IN:
-    case CSSPrimitiveValue::CSS_PT:
-    case CSSPrimitiveValue::CSS_PC:
-        return true;
-
-    default:
-        return false;
-    }
-}
-
-PassOwnPtrWillBeRawPtr<InterpolableValue> SVGLengthStyleInterpolation::lengthToInterpolableValue(const CSSPrimitiveValue& length)
-{
-    ASSERT(canCreateFrom(length));
-    return InterpolableNumber::create(length.getDoubleValue());
-}
-
-PassRefPtrWillBeRawPtr<CSSPrimitiveValue> SVGLengthStyleInterpolation::interpolableValueToLength(const InterpolableValue& interpolableValue, CSSPrimitiveValue::UnitType type, InterpolationRange range)
-{
-    double value = toInterpolableNumber(interpolableValue).value();
-    if (range == RangeNonNegative && value < 0)
-        value = 0;
-
-    return CSSPrimitiveValue::create(value, type);
-}
-
-PassRefPtrWillBeRawPtr<SVGLengthStyleInterpolation> SVGLengthStyleInterpolation::maybeCreate(const CSSValue& start, const CSSValue& end, CSSPropertyID id, InterpolationRange range)
-{
-    if (!canCreateFrom(start) || !canCreateFrom(end))
-        return nullptr;
-
-    const CSSPrimitiveValue& primitiveStart = toCSSPrimitiveValue(start);
-    const CSSPrimitiveValue& primitiveEnd = toCSSPrimitiveValue(end);
-
-    CSSPrimitiveValue::UnitType type = commonUnitType(primitiveStart, primitiveEnd);
-    if (type == CSSPrimitiveValue::CSS_UNKNOWN)
-        return nullptr;
-    return adoptRefWillBeNoop(new SVGLengthStyleInterpolation(primitiveStart, primitiveEnd, id, type, range));
-}
-
-CSSPrimitiveValue::UnitType SVGLengthStyleInterpolation::commonUnitType(const CSSPrimitiveValue& start, const CSSPrimitiveValue& end)
-{
-    if (start.getDoubleValue() == 0 || start.primitiveType() == end.primitiveType())
-        return end.primitiveType();
-    if (end.getDoubleValue() == 0)
-        return start.primitiveType();
-    return CSSPrimitiveValue::CSS_UNKNOWN;
-}
-
-SVGLengthStyleInterpolation::SVGLengthStyleInterpolation(const CSSPrimitiveValue& start, const CSSPrimitiveValue& end, CSSPropertyID id, CSSPrimitiveValue::UnitType type, InterpolationRange range)
-    : StyleInterpolation(lengthToInterpolableValue(start), lengthToInterpolableValue(end), id)
-    , m_type(type)
-    , m_range(range)
-{
-}
-
-void SVGLengthStyleInterpolation::apply(StyleResolverState& state) const
-{
-    StyleBuilder::applyProperty(m_id, state, interpolableValueToLength(*m_cachedValue, m_type, m_range).get());
-}
-
-}