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// Copyright 2014 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/ShadowStyleInterpolation.h"
#include "core/animation/ColorStyleInterpolation.h"
#include "core/animation/LengthStyleInterpolation.h"
#include "core/css/CSSPrimitiveValue.h"
#include "core/css/CSSValuePool.h"
#include "core/css/resolver/StyleBuilder.h"
namespace blink {
bool ShadowStyleInterpolation::canCreateFrom(const CSSValue& value)
{
return value.isShadowValue();
}
PassOwnPtrWillBeRawPtr<InterpolableValue> ShadowStyleInterpolation::shadowToInterpolableValue(const CSSValue& value)
{
OwnPtrWillBeRawPtr<InterpolableList> result = InterpolableList::create(6);
const CSSShadowValue* shadowValue = toCSSShadowValue(&value);
ASSERT(shadowValue);
result->set(0, LengthStyleInterpolation::lengthToInterpolableValue(*shadowValue->x));
result->set(1, LengthStyleInterpolation::lengthToInterpolableValue(*shadowValue->y));
result->set(2, LengthStyleInterpolation::lengthToInterpolableValue(*shadowValue->blur));
result->set(3, LengthStyleInterpolation::lengthToInterpolableValue(*shadowValue->spread));
result->set(4, ColorStyleInterpolation::colorToInterpolableValue(*shadowValue->color));
return result.release();
}
PassRefPtrWillBeRawPtr<CSSValue> ShadowStyleInterpolation::interpolableValueToShadow(InterpolableValue* value, bool styleFlag)
{
InterpolableList* shadow = toInterpolableList(value);
RefPtrWillBeRawPtr<CSSPrimitiveValue> x = LengthStyleInterpolation::interpolableValueToLength(shadow->get(0), ValueRangeNonNegative);
RefPtrWillBeRawPtr<CSSPrimitiveValue> y = LengthStyleInterpolation::interpolableValueToLength(shadow->get(1), ValueRangeNonNegative);
RefPtrWillBeRawPtr<CSSPrimitiveValue> blur = LengthStyleInterpolation::interpolableValueToLength(shadow->get(2), ValueRangeNonNegative);
RefPtrWillBeRawPtr<CSSPrimitiveValue> spread = LengthStyleInterpolation::interpolableValueToLength(shadow->get(3), ValueRangeNonNegative);
RefPtrWillBeRawPtr<CSSPrimitiveValue> color = ColorStyleInterpolation::interpolableValueToColor(*(shadow->get(4)));
RefPtrWillBeRawPtr<CSSPrimitiveValue> style = styleFlag ? CSSPrimitiveValue::createIdentifier(CSSValueInset) : CSSPrimitiveValue::createIdentifier(CSSValueNone);
RefPtrWillBeRawPtr<CSSShadowValue> result = CSSShadowValue::create(x, y, blur, spread, style, color);
return result.release();
}
PassRefPtrWillBeRawPtr<ShadowStyleInterpolation> ShadowStyleInterpolation::maybeCreateFromShadow(const CSSValue& start, const CSSValue& end, CSSPropertyID id)
{
if (canCreateFrom(start) && canCreateFrom(end)) {
if (toCSSShadowValue(start).style == toCSSShadowValue(end).style) {
bool styleFlag = (toCSSShadowValue(start).style->getValueID() == CSSValueInset) ? true : false;
return ShadowStyleInterpolation::create(start, end, id, styleFlag);
}
}
return nullptr;
}
void ShadowStyleInterpolation::apply(StyleResolverState& state) const
{
StyleBuilder::applyProperty(m_id, state, interpolableValueToShadow(m_cachedValue.get(), m_styleFlag).get());
}
void ShadowStyleInterpolation::trace(Visitor* visitor)
{
StyleInterpolation::trace(visitor);
}
}
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