root/Source/core/css/resolver/FontBuilder.cpp

DEFINITIONS

1. m_fontDescription
2. reset
3. set
4. fontDescription
5. m_fontDirty
6. initForStyleResolve
7. setFontFamilyToStandard
8. setInitial
9. inheritFrom
10. didChangeFontParameters
11. fromSystemFont
12. setFontFamilyInitial
13. setFontFamilyInherit
14. setFontFamilyValue
15. setFontSizeInitial
16. setFontSizeInherit
17. largerFontSize
18. smallerFontSize
19. setFontSizeValue
20. setWeight
21. setWeightBolder
22. setWeightLighter
23. setFontVariantLigaturesInitial
24. setFontVariantLigaturesInherit
25. setFontVariantLigaturesValue
26. setScript
27. setStyle
28. setVariant
29. setTextRendering
30. setKerning
31. setFontSmoothing
32. setFeatureSettingsNormal
33. setFeatureSettingsValue
34. setSize
35. getComputedSizeFromSpecifiedSize
36. getFontAndGlyphOrientation
37. checkForOrientationChange
38. checkForGenericFamilyChange
39. updateComputedSize
40. createFont
41. createFontForDocument

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include "config.h"
#include "core/css/resolver/FontBuilder.h"

#include "core/css/CSSCalculationValue.h"
#include "core/css/CSSFontFeatureValue.h"
#include "core/css/CSSToLengthConversionData.h"
#include "core/css/FontSize.h"
#include "core/frame/LocalFrame.h"
#include "core/frame/Settings.h"
#include "core/rendering/RenderTheme.h"
#include "core/rendering/RenderView.h"
#include "platform/text/LocaleToScriptMapping.h"

namespace WebCore {

// FIXME: This scoping class is a short-term fix to minimize the changes in
// Font-constructing logic.
class FontDescriptionChangeScope {
public:
    FontDescriptionChangeScope(FontBuilder* fontBuilder)
        : m_fontBuilder(fontBuilder)
        , m_fontDescription(fontBuilder->m_style->fontDescription())
    {
    }

    void reset() { m_fontDescription = FontDescription(); }
    void set(const FontDescription& fontDescription) { m_fontDescription = fontDescription; }
    FontDescription& fontDescription() { return m_fontDescription; }

    ~FontDescriptionChangeScope()
    {
        m_fontBuilder->didChangeFontParameters(m_fontBuilder->m_style->setFontDescription(m_fontDescription));
    }

private:
    FontBuilder* m_fontBuilder;
    FontDescription m_fontDescription;
};

FontBuilder::FontBuilder()
    : m_document(0)
    , m_useSVGZoomRules(false)
    , m_fontSizehasViewportUnits(false)
    , m_style(0)
    , m_fontDirty(false)
{
}

void FontBuilder::initForStyleResolve(const Document& document, RenderStyle* style, bool useSVGZoomRules)
{
    // All documents need to be in a frame (and thus have access to Settings)
    // for style-resolution to make sense.
    // Unfortunately SVG Animations currently violate this: crbug.com/260966
    // ASSERT(m_document->frame());
    m_document = &document;
    m_useSVGZoomRules = useSVGZoomRules;
    m_style = style;
    m_fontDirty = false;
}

inline static void setFontFamilyToStandard(FontDescription& fontDescription, const Document* document)
{
    if (!document || !document->settings())
        return;

    fontDescription.setGenericFamily(FontDescription::StandardFamily);
    const AtomicString& standardFontFamily = document->settings()->genericFontFamilySettings().standard();
    if (standardFontFamily.isEmpty())
        return;

    fontDescription.firstFamily().setFamily(standardFontFamily);
    // FIXME: Why is this needed here?
    fontDescription.firstFamily().appendFamily(nullptr);
}

void FontBuilder::setInitial(float effectiveZoom)
{
    ASSERT(m_document && m_document->settings());
    if (!m_document || !m_document->settings())
        return;

    FontDescriptionChangeScope scope(this);

    scope.reset();
    scope.fontDescription().setUsePrinterFont(m_document->printing());
    setFontFamilyToStandard(scope.fontDescription(), m_document);
    scope.fontDescription().setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
    setSize(scope.fontDescription(), effectiveZoom, FontSize::fontSizeForKeyword(m_document, CSSValueMedium, false));
}

void FontBuilder::inheritFrom(const FontDescription& fontDescription)
{
    FontDescriptionChangeScope scope(this);

    scope.set(fontDescription);
}

void FontBuilder::didChangeFontParameters(bool changed)
{
    m_fontDirty |= changed;
}

void FontBuilder::fromSystemFont(CSSValueID valueId, float effectiveZoom)
{
    FontDescriptionChangeScope scope(this);

    FontDescription fontDescription;
    RenderTheme::theme().systemFont(valueId, fontDescription);

    // Double-check and see if the theme did anything. If not, don't bother updating the font.
    if (!fontDescription.isAbsoluteSize())
        return;

    // Make sure the rendering mode and printer font settings are updated.
    const Settings* settings = m_document->settings();
    ASSERT(settings); // If we're doing style resolution, this document should always be in a frame and thus have settings
    if (!settings)
        return;
    fontDescription.setUsePrinterFont(m_document->printing());

    // Handle the zoom factor.
    fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(fontDescription, effectiveZoom, fontDescription.specifiedSize()));
    scope.set(fontDescription);
}

void FontBuilder::setFontFamilyInitial()
{
    FontDescriptionChangeScope scope(this);

    setFontFamilyToStandard(scope.fontDescription(), m_document);
}

void FontBuilder::setFontFamilyInherit(const FontDescription& parentFontDescription)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setGenericFamily(parentFontDescription.genericFamily());
    scope.fontDescription().setFamily(parentFontDescription.family());
}

// FIXME: I am not convinced FontBuilder needs to know anything about CSSValues.
void FontBuilder::setFontFamilyValue(CSSValue* value)
{
    FontDescriptionChangeScope scope(this);

    if (!value->isValueList())
        return;

    FontFamily& firstFamily = scope.fontDescription().firstFamily();
    FontFamily* currFamily = 0;

    // Before mapping in a new font-family property, we should reset the generic family.
    bool oldFamilyUsedFixedDefaultSize = scope.fontDescription().useFixedDefaultSize();
    scope.fontDescription().setGenericFamily(FontDescription::NoFamily);

    for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
        CSSValue* item = i.value();
        if (!item->isPrimitiveValue())
            continue;
        CSSPrimitiveValue* contentValue = toCSSPrimitiveValue(item);
        AtomicString face;
        Settings* settings = m_document->settings();
        if (contentValue->isString()) {
            face = AtomicString(contentValue->getStringValue());
        } else if (settings) {
            switch (contentValue->getValueID()) {
            case CSSValueWebkitBody:
                face = settings->genericFontFamilySettings().standard();
                break;
            case CSSValueSerif:
                face = FontFamilyNames::webkit_serif;
                scope.fontDescription().setGenericFamily(FontDescription::SerifFamily);
                break;
            case CSSValueSansSerif:
                face = FontFamilyNames::webkit_sans_serif;
                scope.fontDescription().setGenericFamily(FontDescription::SansSerifFamily);
                break;
            case CSSValueCursive:
                face = FontFamilyNames::webkit_cursive;
                scope.fontDescription().setGenericFamily(FontDescription::CursiveFamily);
                break;
            case CSSValueFantasy:
                face = FontFamilyNames::webkit_fantasy;
                scope.fontDescription().setGenericFamily(FontDescription::FantasyFamily);
                break;
            case CSSValueMonospace:
                face = FontFamilyNames::webkit_monospace;
                scope.fontDescription().setGenericFamily(FontDescription::MonospaceFamily);
                break;
            case CSSValueWebkitPictograph:
                face = FontFamilyNames::webkit_pictograph;
                scope.fontDescription().setGenericFamily(FontDescription::PictographFamily);
                break;
            default:
                break;
            }
        }

        if (!face.isEmpty()) {
            if (!currFamily) {
                // Filling in the first family.
                firstFamily.setFamily(face);
                firstFamily.appendFamily(nullptr); // Remove any inherited family-fallback list.
                currFamily = &firstFamily;
            } else {
                RefPtr<SharedFontFamily> newFamily = SharedFontFamily::create();
                newFamily->setFamily(face);
                currFamily->appendFamily(newFamily);
                currFamily = newFamily.get();
            }
        }
    }

    // We can't call useFixedDefaultSize() until all new font families have been added
    // If currFamily is non-zero then we set at least one family on this description.
    if (!currFamily)
        return;

    if (scope.fontDescription().keywordSize() && scope.fontDescription().useFixedDefaultSize() != oldFamilyUsedFixedDefaultSize)
        scope.fontDescription().setSpecifiedSize(FontSize::fontSizeForKeyword(m_document, CSSValueXxSmall + scope.fontDescription().keywordSize() - 1, !oldFamilyUsedFixedDefaultSize));
}

void FontBuilder::setFontSizeInitial()
{
    FontDescriptionChangeScope scope(this);

    float size = FontSize::fontSizeForKeyword(m_document, CSSValueMedium, scope.fontDescription().useFixedDefaultSize());

    if (size < 0)
        return;

    scope.fontDescription().setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
    scope.fontDescription().setSpecifiedSize(size);
}

void FontBuilder::setFontSizeInherit(const FontDescription& parentFontDescription)
{
    FontDescriptionChangeScope scope(this);

    float size = parentFontDescription.specifiedSize();

    if (size < 0)
        return;

    scope.fontDescription().setKeywordSize(parentFontDescription.keywordSize());
    scope.fontDescription().setSpecifiedSize(size);
}

// FIXME: Figure out where we fall in the size ranges (xx-small to xxx-large)
// and scale down/up to the next size level.
static float largerFontSize(float size)
{
    return size * 1.2f;
}

static float smallerFontSize(float size)
{
    return size / 1.2f;
}

// FIXME: Have to pass RenderStyles here for calc/computed values. This shouldn't be neecessary.
void FontBuilder::setFontSizeValue(CSSValue* value, RenderStyle* parentStyle, const RenderStyle* rootElementStyle)
{
    if (!value->isPrimitiveValue())
        return;

    CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);

    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setKeywordSize(0);
    float parentSize = 0;
    bool parentIsAbsoluteSize = false;
    float size = 0;

    // FIXME: Find out when parentStyle could be 0?
    if (parentStyle) {
        parentSize = parentStyle->fontDescription().specifiedSize();
        parentIsAbsoluteSize = parentStyle->fontDescription().isAbsoluteSize();
    }

    if (CSSValueID valueID = primitiveValue->getValueID()) {
        switch (valueID) {
        case CSSValueXxSmall:
        case CSSValueXSmall:
        case CSSValueSmall:
        case CSSValueMedium:
        case CSSValueLarge:
        case CSSValueXLarge:
        case CSSValueXxLarge:
        case CSSValueWebkitXxxLarge:
            size = FontSize::fontSizeForKeyword(m_document, valueID, scope.fontDescription().useFixedDefaultSize());
            scope.fontDescription().setKeywordSize(valueID - CSSValueXxSmall + 1);
            break;
        case CSSValueLarger:
            size = largerFontSize(parentSize);
            break;
        case CSSValueSmaller:
            size = smallerFontSize(parentSize);
            break;
        default:
            return;
        }

        scope.fontDescription().setIsAbsoluteSize(parentIsAbsoluteSize && (valueID == CSSValueLarger || valueID == CSSValueSmaller));
    } else {
        scope.fontDescription().setIsAbsoluteSize(parentIsAbsoluteSize || !(primitiveValue->isPercentage() || primitiveValue->isFontRelativeLength()));
        if (primitiveValue->isPercentage()) {
            size = (primitiveValue->getFloatValue() * parentSize) / 100.0f;
        } else {
            // If we have viewport units the conversion will mark the parent style as having viewport units.
            bool parentHasViewportUnits = parentStyle->hasViewportUnits();
            parentStyle->setHasViewportUnits(false);
            CSSToLengthConversionData conversionData(parentStyle, rootElementStyle, m_document->renderView(), 1.0f, true);
            if (primitiveValue->isLength())
                size = primitiveValue->computeLength<float>(conversionData);
            else if (primitiveValue->isCalculatedPercentageWithLength())
                size = primitiveValue->cssCalcValue()->toCalcValue(conversionData)->evaluate(parentSize);
            else
                ASSERT_NOT_REACHED();
            m_fontSizehasViewportUnits = parentStyle->hasViewportUnits();
            parentStyle->setHasViewportUnits(parentHasViewportUnits);
        }
    }

    if (size < 0)
        return;

    // Overly large font sizes will cause crashes on some platforms (such as Windows).
    // Cap font size here to make sure that doesn't happen.
    size = std::min(maximumAllowedFontSize, size);


    scope.fontDescription().setSpecifiedSize(size);
}

void FontBuilder::setWeight(FontWeight fontWeight)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setWeight(fontWeight);
}

void FontBuilder::setWeightBolder()
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setWeight(scope.fontDescription().bolderWeight());
}

void FontBuilder::setWeightLighter()
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setWeight(scope.fontDescription().lighterWeight());
}

void FontBuilder::setFontVariantLigaturesInitial()
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setCommonLigaturesState(FontDescription::NormalLigaturesState);
    scope.fontDescription().setDiscretionaryLigaturesState(FontDescription::NormalLigaturesState);
    scope.fontDescription().setHistoricalLigaturesState(FontDescription::NormalLigaturesState);
    scope.fontDescription().setContextualLigaturesState(FontDescription::NormalLigaturesState);
}

void FontBuilder::setFontVariantLigaturesInherit(const FontDescription& parentFontDescription)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setCommonLigaturesState(parentFontDescription.commonLigaturesState());
    scope.fontDescription().setDiscretionaryLigaturesState(parentFontDescription.discretionaryLigaturesState());
    scope.fontDescription().setHistoricalLigaturesState(parentFontDescription.historicalLigaturesState());
    scope.fontDescription().setContextualLigaturesState(parentFontDescription.historicalLigaturesState());
}

void FontBuilder::setFontVariantLigaturesValue(CSSValue* value)
{
    FontDescriptionChangeScope scope(this);

    FontDescription::LigaturesState commonLigaturesState = FontDescription::NormalLigaturesState;
    FontDescription::LigaturesState discretionaryLigaturesState = FontDescription::NormalLigaturesState;
    FontDescription::LigaturesState historicalLigaturesState = FontDescription::NormalLigaturesState;
    FontDescription::LigaturesState contextualLigaturesState = FontDescription::NormalLigaturesState;

    if (value->isValueList()) {
        CSSValueList* valueList = toCSSValueList(value);
        for (size_t i = 0; i < valueList->length(); ++i) {
            CSSValue* item = valueList->itemWithoutBoundsCheck(i);
            ASSERT(item->isPrimitiveValue());
            if (item->isPrimitiveValue()) {
                CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(item);
                switch (primitiveValue->getValueID()) {
                case CSSValueNoCommonLigatures:
                    commonLigaturesState = FontDescription::DisabledLigaturesState;
                    break;
                case CSSValueCommonLigatures:
                    commonLigaturesState = FontDescription::EnabledLigaturesState;
                    break;
                case CSSValueNoDiscretionaryLigatures:
                    discretionaryLigaturesState = FontDescription::DisabledLigaturesState;
                    break;
                case CSSValueDiscretionaryLigatures:
                    discretionaryLigaturesState = FontDescription::EnabledLigaturesState;
                    break;
                case CSSValueNoHistoricalLigatures:
                    historicalLigaturesState = FontDescription::DisabledLigaturesState;
                    break;
                case CSSValueHistoricalLigatures:
                    historicalLigaturesState = FontDescription::EnabledLigaturesState;
                    break;
                case CSSValueNoContextual:
                    contextualLigaturesState = FontDescription::DisabledLigaturesState;
                    break;
                case CSSValueContextual:
                    contextualLigaturesState = FontDescription::EnabledLigaturesState;
                    break;
                default:
                    ASSERT_NOT_REACHED();
                    break;
                }
            }
        }
    }
#if !ASSERT_DISABLED
    else {
        ASSERT_WITH_SECURITY_IMPLICATION(value->isPrimitiveValue());
        ASSERT(toCSSPrimitiveValue(value)->getValueID() == CSSValueNormal);
    }
#endif

    scope.fontDescription().setCommonLigaturesState(commonLigaturesState);
    scope.fontDescription().setDiscretionaryLigaturesState(discretionaryLigaturesState);
    scope.fontDescription().setHistoricalLigaturesState(historicalLigaturesState);
    scope.fontDescription().setContextualLigaturesState(contextualLigaturesState);
}

void FontBuilder::setScript(const String& locale)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setScript(localeToScriptCodeForFontSelection(locale));
}

void FontBuilder::setStyle(FontStyle italic)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setStyle(italic);
}

void FontBuilder::setVariant(FontVariant smallCaps)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setVariant(smallCaps);
}

void FontBuilder::setTextRendering(TextRenderingMode textRenderingMode)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setTextRendering(textRenderingMode);
}

void FontBuilder::setKerning(FontDescription::Kerning kerning)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setKerning(kerning);
}

void FontBuilder::setFontSmoothing(FontSmoothingMode foontSmoothingMode)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setFontSmoothing(foontSmoothingMode);
}

void FontBuilder::setFeatureSettingsNormal()
{
    FontDescriptionChangeScope scope(this);

    // FIXME: Eliminate FontDescription::makeNormalFeatureSettings. It's useless.
    scope.set(scope.fontDescription().makeNormalFeatureSettings());
}

void FontBuilder::setFeatureSettingsValue(CSSValue* value)
{
    FontDescriptionChangeScope scope(this);

    CSSValueList* list = toCSSValueList(value);
    RefPtr<FontFeatureSettings> settings = FontFeatureSettings::create();
    int len = list->length();
    for (int i = 0; i < len; ++i) {
        CSSValue* item = list->itemWithoutBoundsCheck(i);
        if (!item->isFontFeatureValue())
            continue;
        CSSFontFeatureValue* feature = toCSSFontFeatureValue(item);
        settings->append(FontFeature(feature->tag(), feature->value()));
    }
    scope.fontDescription().setFeatureSettings(settings.release());
}

void FontBuilder::setSize(FontDescription& fontDescription, float effectiveZoom, float size)
{
    fontDescription.setSpecifiedSize(size);
    fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(fontDescription, effectiveZoom, size));
}

float FontBuilder::getComputedSizeFromSpecifiedSize(FontDescription& fontDescription, float effectiveZoom, float specifiedSize)
{
    float zoomFactor = 1.0f;
    if (!m_useSVGZoomRules) {
        zoomFactor = effectiveZoom;
        // FIXME: Why is this here!!!!?!
        if (LocalFrame* frame = m_document->frame())
            zoomFactor *= frame->textZoomFactor();
    }

    return FontSize::getComputedSizeFromSpecifiedSize(m_document, zoomFactor, fontDescription.isAbsoluteSize(), specifiedSize);
}

static void getFontAndGlyphOrientation(const RenderStyle* style, FontOrientation& fontOrientation, NonCJKGlyphOrientation& glyphOrientation)
{
    if (style->isHorizontalWritingMode()) {
        fontOrientation = Horizontal;
        glyphOrientation = NonCJKGlyphOrientationVerticalRight;
        return;
    }

    switch (style->textOrientation()) {
    case TextOrientationVerticalRight:
        fontOrientation = Vertical;
        glyphOrientation = NonCJKGlyphOrientationVerticalRight;
        return;
    case TextOrientationUpright:
        fontOrientation = Vertical;
        glyphOrientation = NonCJKGlyphOrientationUpright;
        return;
    case TextOrientationSideways:
        if (style->writingMode() == LeftToRightWritingMode) {
            // FIXME: This should map to sideways-left, which is not supported yet.
            fontOrientation = Vertical;
            glyphOrientation = NonCJKGlyphOrientationVerticalRight;
            return;
        }
        fontOrientation = Horizontal;
        glyphOrientation = NonCJKGlyphOrientationVerticalRight;
        return;
    case TextOrientationSidewaysRight:
        fontOrientation = Horizontal;
        glyphOrientation = NonCJKGlyphOrientationVerticalRight;
        return;
    default:
        ASSERT_NOT_REACHED();
        fontOrientation = Horizontal;
        glyphOrientation = NonCJKGlyphOrientationVerticalRight;
        return;
    }
}

void FontBuilder::checkForOrientationChange(RenderStyle* style)
{
    FontOrientation fontOrientation;
    NonCJKGlyphOrientation glyphOrientation;
    getFontAndGlyphOrientation(style, fontOrientation, glyphOrientation);

    FontDescriptionChangeScope scope(this);

    if (scope.fontDescription().orientation() == fontOrientation && scope.fontDescription().nonCJKGlyphOrientation() == glyphOrientation)
        return;

    scope.fontDescription().setNonCJKGlyphOrientation(glyphOrientation);
    scope.fontDescription().setOrientation(fontOrientation);
}

void FontBuilder::checkForGenericFamilyChange(RenderStyle* style, const RenderStyle* parentStyle)
{
    FontDescriptionChangeScope scope(this);

    if (scope.fontDescription().isAbsoluteSize() || !parentStyle)
        return;

    const FontDescription& parentFontDescription = parentStyle->fontDescription();
    if (scope.fontDescription().useFixedDefaultSize() == parentFontDescription.useFixedDefaultSize())
        return;

    // For now, lump all families but monospace together.
    if (scope.fontDescription().genericFamily() != FontDescription::MonospaceFamily
        && parentFontDescription.genericFamily() != FontDescription::MonospaceFamily)
        return;

    // We know the parent is monospace or the child is monospace, and that font
    // size was unspecified. We want to scale our font size as appropriate.
    // If the font uses a keyword size, then we refetch from the table rather than
    // multiplying by our scale factor.
    float size;
    if (scope.fontDescription().keywordSize()) {
        size = FontSize::fontSizeForKeyword(m_document, CSSValueXxSmall + scope.fontDescription().keywordSize() - 1, scope.fontDescription().useFixedDefaultSize());
    } else {
        Settings* settings = m_document->settings();
        float fixedScaleFactor = (settings && settings->defaultFixedFontSize() && settings->defaultFontSize())
            ? static_cast<float>(settings->defaultFixedFontSize()) / settings->defaultFontSize()
            : 1;
        size = parentFontDescription.useFixedDefaultSize() ?
            scope.fontDescription().specifiedSize() / fixedScaleFactor :
            scope.fontDescription().specifiedSize() * fixedScaleFactor;
    }

    setSize(scope.fontDescription(), style->effectiveZoom(), size);
}

void FontBuilder::updateComputedSize(RenderStyle* style, const RenderStyle* parentStyle)
{
    FontDescriptionChangeScope scope(this);

    scope.fontDescription().setComputedSize(getComputedSizeFromSpecifiedSize(scope.fontDescription(), style->effectiveZoom(), scope.fontDescription().specifiedSize()));
}

// FIXME: style param should come first
void FontBuilder::createFont(PassRefPtr<FontSelector> fontSelector, const RenderStyle* parentStyle, RenderStyle* style)
{
    if (!m_fontDirty)
        return;

    updateComputedSize(style, parentStyle);
    checkForGenericFamilyChange(style, parentStyle);
    checkForOrientationChange(style);
    style->font().update(fontSelector);
    m_fontDirty = false;
}

void FontBuilder::createFontForDocument(PassRefPtr<FontSelector> fontSelector, RenderStyle* documentStyle)
{
    FontDescription fontDescription = FontDescription();
    fontDescription.setScript(localeToScriptCodeForFontSelection(documentStyle->locale()));
    fontDescription.setUsePrinterFont(m_document->printing());

    setFontFamilyToStandard(fontDescription, m_document);
    fontDescription.setKeywordSize(CSSValueMedium - CSSValueXxSmall + 1);
    int size = FontSize::fontSizeForKeyword(m_document, CSSValueMedium, false);
    fontDescription.setSpecifiedSize(size);
    fontDescription.setComputedSize(getComputedSizeFromSpecifiedSize(fontDescription, documentStyle->effectiveZoom(), size));

    FontOrientation fontOrientation;
    NonCJKGlyphOrientation glyphOrientation;
    getFontAndGlyphOrientation(documentStyle, fontOrientation, glyphOrientation);
    fontDescription.setOrientation(fontOrientation);
    fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
    documentStyle->setFontDescription(fontDescription);
    documentStyle->font().update(fontSelector);
}

}