Source/core/animation/AnimatableStrokeDasharrayList.cpp

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

#include "bindings/v8/ExceptionStatePlaceholder.h"
#include "core/animation/AnimatableSVGLength.h"

namespace WebCore {

AnimatableStrokeDasharrayList::AnimatableStrokeDasharrayList(const Vector<SVGLength>& lengths)
{
    for (size_t i = 0; i < lengths.size(); ++i)
        m_values.append(AnimatableSVGLength::create(lengths[i]));
}

Vector<SVGLength> AnimatableStrokeDasharrayList::toSVGLengthVector() const
{
    Vector<SVGLength> lengths(m_values.size());
    for (size_t i = 0; i < m_values.size(); ++i) {
        lengths[i] = toAnimatableSVGLength(m_values[i].get())->toSVGLength();
        if (lengths[i].valueInSpecifiedUnits() < 0)
            lengths[i].setValueInSpecifiedUnits(0);
    }
    return lengths;
}

PassRefPtr<AnimatableValue> AnimatableStrokeDasharrayList::interpolateTo(const AnimatableValue* value, double fraction) const
{
    Vector<RefPtr<AnimatableValue> > from = m_values;
    Vector<RefPtr<AnimatableValue> > to = toAnimatableStrokeDasharrayList(value)->m_values;

    // The spec states that if the sum of all values is zero, this should be
    // treated like a value of 'none', which means that a solid line is drawn.
    // Since we animate to and from values of zero, treat a value of 'none' the
    // same. If both the two and from values are 'none', we return 'none'
    // rather than '0 0'.
    if (from.isEmpty() && to.isEmpty())
        return takeConstRef(this);
    if (from.isEmpty() || to.isEmpty()) {
        DEFINE_STATIC_LOCAL(RefPtr<AnimatableSVGLength>, zeroPixels, ());
        if (!zeroPixels) {
            SVGLength length;
            length.newValueSpecifiedUnits(LengthTypePX, 0, IGNORE_EXCEPTION);
            zeroPixels = AnimatableSVGLength::create(length);
        }
        if (from.isEmpty()) {
            from.append(zeroPixels);
            from.append(zeroPixels);
        }
        if (to.isEmpty()) {
            to.append(zeroPixels);
            to.append(zeroPixels);
        }
    }

    Vector<RefPtr<AnimatableValue> > interpolatedValues;
    bool success = interpolateLists(from, to, fraction, interpolatedValues);
    ASSERT_UNUSED(success, success);
    return adoptRef(new AnimatableStrokeDasharrayList(interpolatedValues));
}

} // namespace WebCore