Source/WebCore/css/CSSToLengthConversionData.cpp

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#include "config.h"
#include "CSSToLengthConversionData.h"

#include "FloatSize.h"
#include "RenderStyle.h"
#include "RenderView.h"
#include "StyleBuilderState.h"

namespace WebCore {

CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle& style, const Style::BuilderContext& builderContext)
    : m_style(&style)
    , m_rootStyle(builderContext.rootElementStyle)
    , m_parentStyle(&builderContext.parentStyle)
    , m_renderView(builderContext.document->renderView())
    , m_elementForContainerUnitResolution(builderContext.element)
    , m_viewportDependencyDetectionStyle(const_cast<RenderStyle*>(m_style))
{
}

CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle& style, const RenderStyle* rootStyle, const RenderStyle* parentStyle, const RenderView* renderView, const Element* elementForContainerUnitResolution)
    : m_style(&style)
    , m_rootStyle(rootStyle)
    , m_parentStyle(parentStyle)
    , m_renderView(renderView)
    , m_elementForContainerUnitResolution(elementForContainerUnitResolution)
    , m_zoom(1.f)
    , m_viewportDependencyDetectionStyle(const_cast<RenderStyle*>(m_style))
{
}

float CSSToLengthConversionData::zoom() const
{
    return m_zoom.value_or(m_style ? m_style->effectiveZoom() : 1.f);
}

FloatSize CSSToLengthConversionData::defaultViewportFactor() const
{
    if (m_viewportDependencyDetectionStyle)
        m_viewportDependencyDetectionStyle->setUsesViewportUnits();

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSDefaultViewportUnits() / 100.0;
}

FloatSize CSSToLengthConversionData::smallViewportFactor() const
{
    if (m_viewportDependencyDetectionStyle)
        m_viewportDependencyDetectionStyle->setUsesViewportUnits();

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSSmallViewportUnits() / 100.0;
}

FloatSize CSSToLengthConversionData::largeViewportFactor() const
{
    if (m_viewportDependencyDetectionStyle)
        m_viewportDependencyDetectionStyle->setUsesViewportUnits();

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSLargeViewportUnits() / 100.0;
}

FloatSize CSSToLengthConversionData::dynamicViewportFactor() const
{
    if (m_viewportDependencyDetectionStyle)
        m_viewportDependencyDetectionStyle->setUsesViewportUnits();

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSDynamicViewportUnits() / 100.0;
}

void CSSToLengthConversionData::setUsesContainerUnits() const
{
    if (m_viewportDependencyDetectionStyle)
        m_viewportDependencyDetectionStyle->setUsesContainerUnits();
}

} // namespace WebCore