xref: /external/chromium_org/third_party/WebKit/Source/core/svg/SVGPoint.cpp

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 * Copyright (C) 2014 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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#include "config.h"

#include "core/svg/SVGPoint.h"

#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/svg/SVGAnimationElement.h"
#include "core/svg/SVGParserUtilities.h"
#include "platform/transforms/AffineTransform.h"
#include "wtf/text/StringBuilder.h"
#include "wtf/text/WTFString.h"

namespace blink {

SVGPoint::SVGPoint()
{
}

SVGPoint::SVGPoint(const FloatPoint& point)
    : m_value(point)
{
}

PassRefPtr<SVGPoint> SVGPoint::clone() const
{
    return SVGPoint::create(m_value);
}

template<typename CharType>
void SVGPoint::parse(const CharType*& ptr, const CharType* end, ExceptionState& exceptionState)
{
    const CharType* start = ptr;

    skipOptionalSVGSpaces(ptr, end);

    float x = 0.0f;
    float y = 0.0f;
    bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y, DisallowWhitespace);

    if (!valid) {
        exceptionState.throwDOMException(SyntaxError, "Problem parsing point \"" + String(start, end - start) + "\"");
        return;
    }

    skipOptionalSVGSpaces(ptr, end);
    if (ptr < end) { // nothing should come after the last, fourth number
        exceptionState.throwDOMException(SyntaxError, "Problem parsing point \"" + String(start, end - start) + "\"");
        return;
    }

    m_value = FloatPoint(x, y);
}

FloatPoint SVGPoint::matrixTransform(const AffineTransform& transform) const
{
    double newX, newY;
    transform.map(static_cast<double>(x()), static_cast<double>(y()), newX, newY);
    return FloatPoint::narrowPrecision(newX, newY);
}

void SVGPoint::setValueAsString(const String& string, ExceptionState& exceptionState)
{
    if (string.isEmpty()) {
        m_value = FloatPoint(0.0f, 0.0f);
        return;
    }

    if (string.is8Bit()) {
        const LChar* ptr = string.characters8();
        const LChar* end = ptr + string.length();
        parse(ptr, end, exceptionState);
        return;
    }

    const UChar* ptr = string.characters16();
    const UChar* end = ptr + string.length();
    parse(ptr, end, exceptionState);
}

String SVGPoint::valueAsString() const
{
    StringBuilder builder;
    builder.appendNumber(x());
    builder.append(' ');
    builder.appendNumber(y());
    return builder.toString();
}

void SVGPoint::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement*)
{
    // SVGPoint is not animated by itself
    ASSERT_NOT_REACHED();
}

void SVGPoint::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> fromValue, PassRefPtr<SVGPropertyBase> toValue, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*)
{
    // SVGPoint is not animated by itself
    ASSERT_NOT_REACHED();
}

float SVGPoint::calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement* contextElement)
{
    // SVGPoint is not animated by itself
    ASSERT_NOT_REACHED();
    return 0.0f;
}

}