root/Source/core/animation/AnimatableClipPathOperation.cpp

DEFINITIONS

1. usesDefaultInterpolationWith
2. interpolateTo
3. equalTo

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#include "config.h"
#include "core/animation/AnimatableClipPathOperation.h"

namespace WebCore {

bool AnimatableClipPathOperation::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
    const AnimatableClipPathOperation* toOperation = toAnimatableClipPathOperation(value);

    if (m_operation->type() != ClipPathOperation::SHAPE || toOperation->m_operation->type() != ClipPathOperation::SHAPE)
        return true;

    const BasicShape* fromShape = toShapeClipPathOperation(clipPathOperation())->basicShape();
    const BasicShape* toShape = toShapeClipPathOperation(toOperation->clipPathOperation())->basicShape();

    return !fromShape->canBlend(toShape);
}

PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableClipPathOperation::interpolateTo(const AnimatableValue* value, double fraction) const
{
    if (usesDefaultInterpolationWith(value))
        return defaultInterpolateTo(this, value, fraction);

    const AnimatableClipPathOperation* toOperation = toAnimatableClipPathOperation(value);
    const BasicShape* fromShape = toShapeClipPathOperation(clipPathOperation())->basicShape();
    const BasicShape* toShape = toShapeClipPathOperation(toOperation->clipPathOperation())->basicShape();

    return AnimatableClipPathOperation::create(ShapeClipPathOperation::create(toShape->blend(fromShape, fraction)).get());
}

bool AnimatableClipPathOperation::equalTo(const AnimatableValue* value) const
{
    const ClipPathOperation* operation = toAnimatableClipPathOperation(value)->m_operation.get();
    return m_operation == operation || (m_operation && operation && *m_operation == *operation);
}

}