third_party/WebKit/Source/core/svg/SVGNumber.cpp

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#include "core/svg/SVGNumber.h"

#include "core/svg/SVGAnimationElement.h"
#include "core/svg/SVGParserUtilities.h"

namespace blink {

SVGNumber::SVGNumber(float value)
    : m_value(value)
{
}

PassRefPtrWillBeRawPtr<SVGNumber> SVGNumber::clone() const
{
    return create(m_value);
}

String SVGNumber::valueAsString() const
{
    return String::number(m_value);
}

template<typename CharType>
bool SVGNumber::parse(const CharType*& ptr, const CharType* end)
{
    if (!parseNumber(ptr, end, m_value, AllowLeadingAndTrailingWhitespace)) {
        m_value = 0;
        return false;
    }

    if (ptr != end) {
        m_value = 0;
        return false;
    }

    return true;
}

SVGParsingError SVGNumber::setValueAsString(const String& string)
{
    if (string.isEmpty()) {
        m_value = 0;
        return NoError;
    }

    bool valid = false;
    if (string.is8Bit()) {
        const LChar* ptr = string.characters8();
        const LChar* end = ptr + string.length();
        valid = parse(ptr, end);
    } else {
        const UChar* ptr = string.characters16();
        const UChar* end = ptr + string.length();
        valid = parse(ptr, end);
    }

    if (!valid) {
        m_value = 0;
        return ParsingAttributeFailedError;
    }
    return NoError;
}

void SVGNumber::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement*)
{
    setValue(m_value + toSVGNumber(other)->value());
}

void SVGNumber::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> from, PassRefPtrWillBeRawPtr<SVGPropertyBase> to, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDuration, SVGElement*)
{
    ASSERT(animationElement);

    RefPtrWillBeRawPtr<SVGNumber> fromNumber = toSVGNumber(from);
    RefPtrWillBeRawPtr<SVGNumber> toNumber = toSVGNumber(to);
    RefPtrWillBeRawPtr<SVGNumber> toAtEndOfDurationNumber = toSVGNumber(toAtEndOfDuration);

    animationElement->animateAdditiveNumber(percentage, repeatCount, fromNumber->value(), toNumber->value(), toAtEndOfDurationNumber->value(), m_value);
}

float SVGNumber::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement*)
{
    return fabsf(m_value - toSVGNumber(other)->value());
}

PassRefPtrWillBeRawPtr<SVGNumber> SVGNumberAcceptPercentage::clone() const
{
    return create(m_value);
}

SVGParsingError SVGNumberAcceptPercentage::setValueAsString(const String& string)
{
    if (parseNumberOrPercentage(string, m_value))
        return NoError;

    m_value = 0;
    return ParsingAttributeFailedError;
}

SVGNumberAcceptPercentage::SVGNumberAcceptPercentage(float value)
    : SVGNumber(value)
{
}

}