Source/WebCore/css/CSSToLengthConversionData.cpp

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

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

namespace WebCore {

CSSToLengthConversionData::CSSToLengthConversionData() = default;
CSSToLengthConversionData::CSSToLengthConversionData(const CSSToLengthConversionData&) = default;
CSSToLengthConversionData::CSSToLengthConversionData(CSSToLengthConversionData&&) = default;

CSSToLengthConversionData::CSSToLengthConversionData(const RenderStyle& style, Style::BuilderState& builderState)
    : m_style(&style)
    , m_rootStyle(builderState.rootElementRenderStyle())
    , m_parentStyle(&builderState.parentRenderStyle())
    , m_renderView(builderState.document().renderView())
    , m_elementForContainerUnitResolution(builderState.element())
    , m_styleBuilderState(&builderState)
{
}

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)
{
}

CSSToLengthConversionData::~CSSToLengthConversionData() = default;

const FontCascade& CSSToLengthConversionData::fontCascadeForFontUnits() const
{
    if (computingFontSize()) {
        ASSERT(parentStyle());
        return parentStyle()->fontCascade();
    }
    ASSERT(style());
    return style()->fontCascade();
}

float CSSToLengthConversionData::computedLineHeightForFontUnits() const
{
    if (computingFontSize()) {
        ASSERT(parentStyle());
        return parentStyle()->computedLineHeight();
    }
    ASSERT(style());
    return style()->computedLineHeight();
}

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

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

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSDefaultViewportUnits() / 100.0;
}

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

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSSmallViewportUnits() / 100.0;
}

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

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSLargeViewportUnits() / 100.0;
}

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

    if (!m_renderView)
        return { };

    return m_renderView->sizeForCSSDynamicViewportUnits() / 100.0;
}

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

CheckedPtr<Style::BuilderState> CSSToLengthConversionData::protectedStyleBuilderState() const
{
    return m_styleBuilderState;
}

bool CSSToLengthConversionData::evaluationTimeZoomEnabled() const
{
    ASSERT(m_style);
    return CheckedPtr { m_style }->evaluationTimeZoomEnabled();
}

} // namespace WebCore