root/Source/core/animation/AnimatableFilterOperations.cpp

DEFINITIONS

1. usesDefaultInterpolationWith
2. interpolateTo
3. addWith
4. equalTo

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

#include <algorithm>

namespace WebCore {

bool AnimatableFilterOperations::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
    const AnimatableFilterOperations* target = toAnimatableFilterOperations(value);
    return !operations().canInterpolateWith(target->operations());
}

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

    const AnimatableFilterOperations* target = toAnimatableFilterOperations(value);
    FilterOperations result;
    size_t fromSize = operations().size();
    size_t toSize = target->operations().size();
    size_t size = std::max(fromSize, toSize);
    for (size_t i = 0; i < size; i++) {
        FilterOperation* from = (i < fromSize) ? m_operations.operations()[i].get() : 0;
        FilterOperation* to = (i < toSize) ? target->m_operations.operations()[i].get() : 0;
        RefPtr<FilterOperation> blendedOp = FilterOperation::blend(from, to, fraction);
        if (blendedOp)
            result.operations().append(blendedOp);
        else
            ASSERT_NOT_REACHED();
    }
    return AnimatableFilterOperations::create(result);
}

PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableFilterOperations::addWith(const AnimatableValue* value) const
{
    ASSERT_WITH_MESSAGE(false, "Web Animations not yet implemented: AnimatableFilterOperations::addWith()");
    return defaultAddWith(this, value);
}

bool AnimatableFilterOperations::equalTo(const AnimatableValue* value) const
{
    return operations() == toAnimatableFilterOperations(value)->operations();
}

}