root/Source/core/animation/AnimatableShapeValue.cpp

DEFINITIONS

1. usesDefaultInterpolationWith
2. interpolateTo
3. equalTo

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

namespace WebCore {

bool AnimatableShapeValue::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
    const AnimatableShapeValue* shapeValue = toAnimatableShapeValue(value);

    if (m_shape->type() != ShapeValue::Shape
        || shapeValue->m_shape->type() != ShapeValue::Shape
        || m_shape->cssBox() != shapeValue->m_shape->cssBox())
        return true;

    const BasicShape* fromShape = this->m_shape->shape();
    const BasicShape* toShape = shapeValue->m_shape->shape();

    return !fromShape->canBlend(toShape);
}

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

    const AnimatableShapeValue* shapeValue = toAnimatableShapeValue(value);
    const BasicShape* fromShape = this->m_shape->shape();
    const BasicShape* toShape = shapeValue->m_shape->shape();
    return AnimatableShapeValue::create(ShapeValue::createShapeValue(toShape->blend(fromShape, fraction), shapeValue->m_shape->cssBox()).get());
}

bool AnimatableShapeValue::equalTo(const AnimatableValue* value) const
{
    const ShapeValue* shape = toAnimatableShapeValue(value)->m_shape.get();
    return m_shape == shape || (m_shape && shape && *m_shape == *shape);
}

}