Source/WebCore/css/CSSToLengthConversionData.cpp

/*
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 * modification, are permitted provided that the following conditions are
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#include "config.h"
#include "CSSToLengthConversionData.h"

#include "RenderStyle.h"
#include "RenderView.h"

namespace WebCore {

float CSSToLengthConversionData::zoom() const
{
    if (m_useEffectiveZoom)
        return m_style ? m_style->effectiveZoom() : 1;
    return m_zoom;
}

double CSSToLengthConversionData::viewportWidthFactor() const
{
    if (m_style && !m_computingFontSize)
        const_cast<RenderStyle*>(m_style)->setHasViewportUnits();

    if (!m_renderView)
        return 0;

    return m_renderView->viewportSizeForCSSViewportUnits().width() / 100.0;
}

double CSSToLengthConversionData::viewportHeightFactor() const
{
    if (m_style && !m_computingFontSize)
        const_cast<RenderStyle*>(m_style)->setHasViewportUnits();

    if (!m_renderView)
        return 0;

    return m_renderView->viewportSizeForCSSViewportUnits().height() / 100.0;
}

double CSSToLengthConversionData::viewportMinFactor() const
{
    if (m_style && !m_computingFontSize)
        const_cast<RenderStyle*>(m_style)->setHasViewportUnits();

    if (!m_renderView)
        return 0;

    IntSize viewportSizeForCSSViewportUnits = m_renderView->viewportSizeForCSSViewportUnits();
    return std::min(viewportSizeForCSSViewportUnits.width(), viewportSizeForCSSViewportUnits.height()) / 100.0;
}

double CSSToLengthConversionData::viewportMaxFactor() const
{
    if (m_style && !m_computingFontSize)
        const_cast<RenderStyle*>(m_style)->setHasViewportUnits();

    if (!m_renderView)
        return 0;

    IntSize viewportSizeForCSSViewportUnits = m_renderView->viewportSizeForCSSViewportUnits();
    return std::max(viewportSizeForCSSViewportUnits.width(), viewportSizeForCSSViewportUnits.height()) / 100.0;
}

} // namespace WebCore