sky/engine/core/rendering/style/RenderStyle.h

/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
 *
 * 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.
 *
 */

#ifndef SKY_ENGINE_CORE_RENDERING_STYLE_RENDERSTYLE_H_
#define SKY_ENGINE_CORE_RENDERING_STYLE_RENDERSTYLE_H_

#include "gen/sky/core/CSSPropertyNames.h"
#include "sky/engine/core/css/CSSLineBoxContainValue.h"
#include "sky/engine/core/css/CSSPrimitiveValue.h"
#include "sky/engine/core/rendering/style/BorderValue.h"
#include "sky/engine/core/rendering/style/CounterDirectives.h"
#include "sky/engine/core/rendering/style/DataRef.h"
#include "sky/engine/core/rendering/style/OutlineValue.h"
#include "sky/engine/core/rendering/style/RenderStyleConstants.h"
#include "sky/engine/core/rendering/style/ShapeValue.h"
#include "sky/engine/core/rendering/style/StyleBackgroundData.h"
#include "sky/engine/core/rendering/style/StyleBoxData.h"
#include "sky/engine/core/rendering/style/StyleDifference.h"
#include "sky/engine/core/rendering/style/StyleFilterData.h"
#include "sky/engine/core/rendering/style/StyleFlexibleBoxData.h"
#include "sky/engine/core/rendering/style/StyleInheritedData.h"
#include "sky/engine/core/rendering/style/StyleRareInheritedData.h"
#include "sky/engine/core/rendering/style/StyleRareNonInheritedData.h"
#include "sky/engine/core/rendering/style/StyleSurroundData.h"
#include "sky/engine/core/rendering/style/StyleTransformData.h"
#include "sky/engine/core/rendering/style/StyleVisualData.h"
#include "sky/engine/platform/Length.h"
#include "sky/engine/platform/LengthBox.h"
#include "sky/engine/platform/LengthSize.h"
#include "sky/engine/platform/fonts/FontBaseline.h"
#include "sky/engine/platform/fonts/FontDescription.h"
#include "sky/engine/platform/geometry/FloatRoundedRect.h"
#include "sky/engine/platform/geometry/LayoutBoxExtent.h"
#include "sky/engine/platform/geometry/RoundedRect.h"
#include "sky/engine/platform/graphics/Color.h"
#include "sky/engine/platform/graphics/GraphicsTypes.h"
#include "sky/engine/platform/text/TextDirection.h"
#include "sky/engine/platform/text/UnicodeBidi.h"
#include "sky/engine/platform/transforms/TransformOperations.h"
#include "sky/engine/wtf/Forward.h"
#include "sky/engine/wtf/OwnPtr.h"
#include "sky/engine/wtf/RefCounted.h"
#include "sky/engine/wtf/StdLibExtras.h"
#include "sky/engine/wtf/Vector.h"

template<typename T, typename U> inline bool compareEqual(const T& t, const U& u) { return t == static_cast<T>(u); }

#define SET_VAR(group, variable, value) \
    if (!compareEqual(group->variable, value)) \
        group.access()->variable = value

#define SET_VAR_WITH_SETTER(group, getter, setter, value)    \
    if (!compareEqual(group->getter(), value)) \
        group.access()->setter(value)

#define SET_BORDERVALUE_COLOR(group, variable, value) \
    if (!compareEqual(group->variable.color(), value)) \
        group.access()->variable.setColor(value)

namespace blink {

using std::max;

class FilterOperations;

class AppliedTextDecoration;
class BorderData;
class Font;
class FontMetrics;
class ShadowList;
class StyleImage;
class StyleInheritedData;
class StyleResolver;
class TransformationMatrix;

class RenderStyle: public RefCounted<RenderStyle> {
    friend class EditingStyle; // Editing has to only reveal unvisited info.
    friend class CSSComputedStyleDeclaration; // Ignores visited styles, so needs to be able to see unvisited info.
    friend class StyleBuilderFunctions; // Sets color styles

    // FIXME: When we stop resolving currentColor at style time, these can be removed.
    friend class CSSToStyleMap;
    friend class FilterOperationResolver;
    friend class StyleBuilderConverter;
    friend class StyleResolverState;
    friend class StyleResolver;
protected:

    // non-inherited attributes
    DataRef<StyleBoxData> m_box;
    DataRef<StyleVisualData> visual;
    DataRef<StyleBackgroundData> m_background;
    DataRef<StyleSurroundData> surround;
    DataRef<StyleRareNonInheritedData> rareNonInheritedData;

    // inherited attributes
    DataRef<StyleRareInheritedData> rareInheritedData;
    DataRef<StyleInheritedData> inherited;

// !START SYNC!: Keep this in sync with the copy constructor in RenderStyle.cpp and implicitlyInherited() in StyleResolver.cpp

    // inherit
    struct InheritedFlags {
        bool operator==(const InheritedFlags& other) const
        {
            return (_visibility == other._visibility)
                && (_text_align == other._text_align)
                && (m_textUnderline == other.m_textUnderline)
                && (_direction == other._direction)
                && (_white_space == other._white_space)
                && (m_rtlOrdering == other.m_rtlOrdering)
                && (_pointerEvents == other._pointerEvents);
        }

        bool operator!=(const InheritedFlags& other) const { return !(*this == other); }

        unsigned _visibility : 2; // EVisibility
        unsigned _text_align : 4; // ETextAlign
        unsigned m_textUnderline : 1;
        unsigned _direction : 1; // TextDirection
        unsigned _white_space : 3; // EWhiteSpace

        // non CSS2 inherited
        unsigned m_rtlOrdering : 1; // Order
        unsigned _pointerEvents : 4; // EPointerEvents

        // 19 bits
    } inherited_flags;

// don't inherit
    struct NonInheritedFlags {
        bool operator==(const NonInheritedFlags& other) const
        {
            return effectiveDisplay == other.effectiveDisplay
                && originalDisplay == other.originalDisplay
                && overflowX == other.overflowX
                && overflowY == other.overflowY
                && verticalAlign == other.verticalAlign
                && position == other.position
                && styleType == other.styleType
                && affectedByFocus == other.affectedByFocus
                && affectedByHover == other.affectedByHover
                && affectedByActive == other.affectedByActive
                && unicodeBidi == other.unicodeBidi
                && explicitInheritance == other.explicitInheritance
                && currentColor == other.currentColor
                && unique == other.unique
                && emptyState == other.emptyState
                && firstChildState == other.firstChildState
                && lastChildState == other.lastChildState
                && isLink == other.isLink;
        }

        bool operator!=(const NonInheritedFlags& other) const { return !(*this == other); }

        unsigned effectiveDisplay : 5; // EDisplay
        unsigned originalDisplay : 5; // EDisplay
        unsigned overflowX : 3; // EOverflow
        unsigned overflowY : 3; // EOverflow
        unsigned verticalAlign : 4; // EVerticalAlign
        unsigned position : 1; // EPosition
        unsigned unicodeBidi : 3; // EUnicodeBidi

        // This is set if we used viewport units when resolving a length.
        // It is mutable so we can pass around const RenderStyles to resolve lengths.
        mutable unsigned hasViewportUnits : 1;

        // 32 bits

        unsigned styleType : 6; // PseudoId
        unsigned explicitInheritance : 1; // Explicitly inherits a non-inherited property
        unsigned currentColor : 1; // At least one color has the value 'currentColor'
        unsigned unique : 1; // Style can not be shared.

        unsigned emptyState : 1;
        unsigned firstChildState : 1;
        unsigned lastChildState : 1;

        unsigned affectedByFocus : 1;
        unsigned affectedByHover : 1;
        unsigned affectedByActive : 1;

        unsigned isLink : 1;
        // If you add more style bits here, you will also need to update RenderStyle::copyNonInheritedFrom()
        // 63 bits
    } noninherited_flags;

// !END SYNC!

protected:
    void setBitDefaults()
    {
        inherited_flags._visibility = initialVisibility();
        inherited_flags._text_align = initialTextAlign();
        inherited_flags.m_textUnderline = false;
        inherited_flags._direction = initialDirection();
        inherited_flags._white_space = initialWhiteSpace();
        inherited_flags.m_rtlOrdering = initialRTLOrdering();
        inherited_flags._pointerEvents = initialPointerEvents();

        noninherited_flags.effectiveDisplay = noninherited_flags.originalDisplay = initialDisplay();
        noninherited_flags.overflowX = initialOverflowX();
        noninherited_flags.overflowY = initialOverflowY();
        noninherited_flags.verticalAlign = initialVerticalAlign();
        noninherited_flags.position = initialPosition();
        noninherited_flags.unicodeBidi = initialUnicodeBidi();
        noninherited_flags.explicitInheritance = false;
        noninherited_flags.currentColor = false;
        noninherited_flags.unique = false;
        noninherited_flags.emptyState = false;
        noninherited_flags.firstChildState = false;
        noninherited_flags.lastChildState = false;
        noninherited_flags.hasViewportUnits = false;
        noninherited_flags.affectedByFocus = false;
        noninherited_flags.affectedByHover = false;
        noninherited_flags.affectedByActive = false;
        noninherited_flags.isLink = false;
    }

private:
    ALWAYS_INLINE RenderStyle();

    enum DefaultStyleTag {
        DefaultStyle
    };
    ALWAYS_INLINE explicit RenderStyle(DefaultStyleTag);
    ALWAYS_INLINE RenderStyle(const RenderStyle&);

public:
    static PassRefPtr<RenderStyle> create();
    static PassRefPtr<RenderStyle> createDefaultStyle();
    static PassRefPtr<RenderStyle> clone(const RenderStyle*);

    // Computes how the style change should be propagated down the tree.
    static StyleRecalcChange stylePropagationDiff(const RenderStyle* oldStyle, const RenderStyle* newStyle);

    StyleDifference visualInvalidationDiff(const RenderStyle&) const;

    void inheritFrom(const RenderStyle* inheritParent);
    void copyNonInheritedFrom(const RenderStyle*);

    void setHasViewportUnits(bool hasViewportUnits = true) const { noninherited_flags.hasViewportUnits = hasViewportUnits; }
    bool hasViewportUnits() const { return noninherited_flags.hasViewportUnits; }

    bool affectedByFocus() const { return noninherited_flags.affectedByFocus; }
    bool affectedByHover() const { return noninherited_flags.affectedByHover; }
    bool affectedByActive() const { return noninherited_flags.affectedByActive; }

    void setAffectedByFocus() { noninherited_flags.affectedByFocus = true; }
    void setAffectedByHover() { noninherited_flags.affectedByHover = true; }
    void setAffectedByActive() { noninherited_flags.affectedByActive = true; }

    bool operator==(const RenderStyle& other) const;
    bool operator!=(const RenderStyle& other) const { return !(*this == other); }
    bool hasMargin() const { return surround->margin.nonZero(); }
    bool hasBorder() const { return surround->border.hasBorder(); }
    bool hasPadding() const { return surround->padding.nonZero(); }
    bool hasOffset() const { return surround->offset.nonZero(); }
    bool hasMarginBeforeQuirk() const { return marginBefore().quirk(); }
    bool hasMarginAfterQuirk() const { return marginAfter().quirk(); }

    bool hasBackgroundImage() const { return m_background->background().hasImage(); }
    bool hasFixedBackgroundImage() const { return m_background->background().hasFixedImage(); }

    bool hasEntirelyFixedBackground() const;

    bool hasBackground() const
    {
        Color color = colorIncludingFallback(CSSPropertyBackgroundColor);
        if (color.alpha())
            return true;
        return hasBackgroundImage();
    }

    FilterOutsets filterOutsets() const { return hasFilter() ? filter().outsets() : FilterOutsets(); }

    Order rtlOrdering() const { return static_cast<Order>(inherited_flags.m_rtlOrdering); }
    void setRTLOrdering(Order o) { inherited_flags.m_rtlOrdering = o; }

    // attribute getter methods

    EDisplay display() const { return static_cast<EDisplay>(noninherited_flags.effectiveDisplay); }
    EDisplay originalDisplay() const { return static_cast<EDisplay>(noninherited_flags.originalDisplay); }

    const Length& left() const { return surround->offset.left(); }
    const Length& right() const { return surround->offset.right(); }
    const Length& top() const { return surround->offset.top(); }
    const Length& bottom() const { return surround->offset.bottom(); }

    // Accessors for positioned object edges that take into account writing mode.
    const Length& logicalLeft() const { return surround->offset.logicalLeft(); }
    const Length& logicalRight() const { return surround->offset.logicalRight(); }
    const Length& logicalTop() const { return surround->offset.before(); }
    const Length& logicalBottom() const { return surround->offset.after(); }

    // Whether or not a positioned element requires normal flow x/y to be computed
    // to determine its position.
    bool hasAutoLeftAndRight() const { return left().isAuto() && right().isAuto(); }
    bool hasAutoTopAndBottom() const { return top().isAuto() && bottom().isAuto(); }

    EPosition position() const { return static_cast<EPosition>(noninherited_flags.position); }
    bool hasOutOfFlowPosition() const { return position() == AbsolutePosition; }
    // FIXME(sky): Remove
    bool hasInFlowPosition() const { return false; }

    const Length& width() const { return m_box->width(); }
    const Length& height() const { return m_box->height(); }
    const Length& minWidth() const { return m_box->minWidth(); }
    const Length& maxWidth() const { return m_box->maxWidth(); }
    const Length& minHeight() const { return m_box->minHeight(); }
    const Length& maxHeight() const { return m_box->maxHeight(); }

    const Length& logicalWidth() const { return width(); }
    const Length& logicalHeight() const { return height(); }
    const Length& logicalMinWidth() const { return minWidth(); }
    const Length& logicalMaxWidth() const { return maxWidth(); }
    const Length& logicalMinHeight() const { return minHeight(); }
    const Length& logicalMaxHeight() const { return maxHeight(); }

    const BorderData& border() const { return surround->border; }
    const BorderValue& borderLeft() const { return surround->border.left(); }
    const BorderValue& borderRight() const { return surround->border.right(); }
    const BorderValue& borderTop() const { return surround->border.top(); }
    const BorderValue& borderBottom() const { return surround->border.bottom(); }

    const BorderValue& borderBefore() const;
    const BorderValue& borderAfter() const;
    const BorderValue& borderStart() const;
    const BorderValue& borderEnd() const;

    const LengthSize& borderTopLeftRadius() const { return surround->border.topLeft(); }
    const LengthSize& borderTopRightRadius() const { return surround->border.topRight(); }
    const LengthSize& borderBottomLeftRadius() const { return surround->border.bottomLeft(); }
    const LengthSize& borderBottomRightRadius() const { return surround->border.bottomRight(); }
    bool hasBorderRadius() const { return surround->border.hasBorderRadius(); }

    unsigned borderLeftWidth() const { return surround->border.borderLeftWidth(); }
    EBorderStyle borderLeftStyle() const { return surround->border.left().style(); }
    bool borderLeftIsTransparent() const { return surround->border.left().isTransparent(); }
    unsigned borderRightWidth() const { return surround->border.borderRightWidth(); }
    EBorderStyle borderRightStyle() const { return surround->border.right().style(); }
    bool borderRightIsTransparent() const { return surround->border.right().isTransparent(); }
    unsigned borderTopWidth() const { return surround->border.borderTopWidth(); }
    EBorderStyle borderTopStyle() const { return surround->border.top().style(); }
    bool borderTopIsTransparent() const { return surround->border.top().isTransparent(); }
    unsigned borderBottomWidth() const { return surround->border.borderBottomWidth(); }
    EBorderStyle borderBottomStyle() const { return surround->border.bottom().style(); }
    bool borderBottomIsTransparent() const { return surround->border.bottom().isTransparent(); }

    unsigned short borderBeforeWidth() const;
    unsigned short borderAfterWidth() const;
    unsigned short borderStartWidth() const;
    unsigned short borderEndWidth() const;

    unsigned short outlineSize() const { return max(0, outlineWidth() + outlineOffset()); }
    unsigned short outlineWidth() const
    {
        if (m_background->outline().style() == BNONE)
            return 0;
        return m_background->outline().width();
    }
    bool hasOutline() const { return outlineWidth() > 0 && outlineStyle() > BHIDDEN; }
    EBorderStyle outlineStyle() const { return m_background->outline().style(); }
    OutlineIsAuto outlineStyleIsAuto() const { return static_cast<OutlineIsAuto>(m_background->outline().isAuto()); }

    EOverflow overflowX() const { return static_cast<EOverflow>(noninherited_flags.overflowX); }
    EOverflow overflowY() const { return static_cast<EOverflow>(noninherited_flags.overflowY); }
    // It's sufficient to just check one direction, since it's illegal to have visible on only one overflow value.
    bool isOverflowVisible() const { ASSERT(overflowX() != OVISIBLE || overflowX() == overflowY()); return overflowX() == OVISIBLE; }
    bool isOverflowPaged() const { return overflowY() == OPAGEDX || overflowY() == OPAGEDY; }

    EVerticalAlign verticalAlign() const { return static_cast<EVerticalAlign>(noninherited_flags.verticalAlign); }
    const Length& verticalAlignLength() const { return m_box->verticalAlign(); }

    const Length& clipLeft() const { return visual->clip.left(); }
    const Length& clipRight() const { return visual->clip.right(); }
    const Length& clipTop() const { return visual->clip.top(); }
    const Length& clipBottom() const { return visual->clip.bottom(); }
    const LengthBox& clip() const { return visual->clip; }
    bool hasAutoClip() const { return visual->hasAutoClip; }

    EUnicodeBidi unicodeBidi() const { return static_cast<EUnicodeBidi>(noninherited_flags.unicodeBidi); }

    const Font& font() const;
    const FontMetrics& fontMetrics() const;
    const FontDescription& fontDescription() const;
    float specifiedFontSize() const;
    float computedFontSize() const;
    int fontSize() const;
    FontWeight fontWeight() const;
    FontStretch fontStretch() const;

    const Length& textIndent() const { return rareInheritedData->indent; }
    TextIndentLine textIndentLine() const { return static_cast<TextIndentLine>(rareInheritedData->m_textIndentLine); }
    TextIndentType textIndentType() const { return static_cast<TextIndentType>(rareInheritedData->m_textIndentType); }
    ETextAlign textAlign() const { return static_cast<ETextAlign>(inherited_flags._text_align); }
    TextAlignLast textAlignLast() const { return static_cast<TextAlignLast>(rareInheritedData->m_textAlignLast); }
    TextJustify textJustify() const { return static_cast<TextJustify>(rareInheritedData->m_textJustify); }
    TextDecoration textDecorationsInEffect() const;
    const Vector<AppliedTextDecoration>& appliedTextDecorations() const;
    TextDecoration textDecoration() const { return static_cast<TextDecoration>(visual->textDecoration); }
    TextUnderlinePosition textUnderlinePosition() const { return static_cast<TextUnderlinePosition>(rareInheritedData->m_textUnderlinePosition); }
    TextDecorationStyle textDecorationStyle() const { return static_cast<TextDecorationStyle>(rareNonInheritedData->m_textDecorationStyle); }
    float wordSpacing() const;
    float letterSpacing() const;

    TextDirection direction() const { return static_cast<TextDirection>(inherited_flags._direction); }
    bool isLeftToRightDirection() const { return direction() == LTR; }

    const Length& specifiedLineHeight() const;
    Length lineHeight() const;
    int computedLineHeight() const;

    EWhiteSpace whiteSpace() const { return static_cast<EWhiteSpace>(inherited_flags._white_space); }
    static bool autoWrap(EWhiteSpace ws)
    {
        // Nowrap and pre don't automatically wrap.
        return ws != NOWRAP && ws != PRE;
    }

    bool autoWrap() const
    {
        return autoWrap(whiteSpace());
    }

    static bool preserveNewline(EWhiteSpace ws)
    {
        // Normal and nowrap do not preserve newlines.
        return ws != NORMAL && ws != NOWRAP;
    }

    bool preserveNewline() const
    {
        return preserveNewline(whiteSpace());
    }

    static bool collapseWhiteSpace(EWhiteSpace ws)
    {
        // Pre and prewrap do not collapse whitespace.
        return ws != PRE && ws != PRE_WRAP;
    }

    bool collapseWhiteSpace() const
    {
        return collapseWhiteSpace(whiteSpace());
    }

    bool isCollapsibleWhiteSpace(UChar c) const
    {
        switch (c) {
            case ' ':
            case '\t':
                return collapseWhiteSpace();
            case '\n':
                return !preserveNewline();
        }
        return false;
    }

    bool breakOnlyAfterWhiteSpace() const
    {
        return whiteSpace() == PRE_WRAP || lineBreak() == LineBreakAfterWhiteSpace;
    }

    bool breakWords() const
    {
        return wordBreak() == BreakWordBreak || overflowWrap() == BreakOverflowWrap;
    }

    EFillRepeat backgroundRepeatX() const { return static_cast<EFillRepeat>(m_background->background().repeatX()); }
    EFillRepeat backgroundRepeatY() const { return static_cast<EFillRepeat>(m_background->background().repeatY()); }
    CompositeOperator backgroundComposite() const { return static_cast<CompositeOperator>(m_background->background().composite()); }
    EFillAttachment backgroundAttachment() const { return static_cast<EFillAttachment>(m_background->background().attachment()); }
    EFillBox backgroundClip() const { return static_cast<EFillBox>(m_background->background().clip()); }
    EFillBox backgroundOrigin() const { return static_cast<EFillBox>(m_background->background().origin()); }
    const Length& backgroundXPosition() const { return m_background->background().xPosition(); }
    const Length& backgroundYPosition() const { return m_background->background().yPosition(); }
    EFillSizeType backgroundSizeType() const { return m_background->background().sizeType(); }
    const LengthSize& backgroundSizeLength() const { return m_background->background().sizeLength(); }
    FillLayer& accessBackgroundLayers() { return m_background.access()->m_background; }
    const FillLayer& backgroundLayers() const { return m_background->background(); }

    short horizontalBorderSpacing() const;
    short verticalBorderSpacing() const;

    const Length& marginTop() const { return surround->margin.top(); }
    const Length& marginBottom() const { return surround->margin.bottom(); }
    const Length& marginLeft() const { return surround->margin.left(); }
    const Length& marginRight() const { return surround->margin.right(); }
    const Length& marginBefore() const { return surround->margin.before(); }
    const Length& marginAfter() const { return surround->margin.after(); }
    const Length& marginStart() const { return surround->margin.start(direction()); }
    const Length& marginEnd() const { return surround->margin.end(direction()); }
    const Length& marginStartUsing(const RenderStyle* otherStyle) const { return surround->margin.start(otherStyle->direction()); }
    const Length& marginEndUsing(const RenderStyle* otherStyle) const { return surround->margin.end(otherStyle->direction()); }
    const Length& marginBeforeUsing(const RenderStyle* otherStyle) const { return surround->margin.before(); }
    const Length& marginAfterUsing(const RenderStyle* otherStyle) const { return surround->margin.after(); }

    const LengthBox& paddingBox() const { return surround->padding; }
    const Length& paddingTop() const { return surround->padding.top(); }
    const Length& paddingBottom() const { return surround->padding.bottom(); }
    const Length& paddingLeft() const { return surround->padding.left(); }
    const Length& paddingRight() const { return surround->padding.right(); }
    const Length& paddingBefore() const { return surround->padding.before(); }
    const Length& paddingAfter() const { return surround->padding.after(); }
    const Length& paddingStart() const { return surround->padding.start(direction()); }
    const Length& paddingEnd() const { return surround->padding.end(direction()); }

    bool isLink() const { return noninherited_flags.isLink; }

    // CSS3 Getter Methods

    int outlineOffset() const
    {
        if (m_background->outline().style() == BNONE)
            return 0;
        return m_background->outline().offset();
    }

    ShadowList* textShadow() const { return rareInheritedData->textShadow.get(); }
    void getTextShadowExtent(LayoutUnit& top, LayoutUnit& right, LayoutUnit& bottom, LayoutUnit& left) const { getShadowExtent(textShadow(), top, right, bottom, left); }
    void getTextShadowHorizontalExtent(LayoutUnit& left, LayoutUnit& right) const { getShadowHorizontalExtent(textShadow(), left, right); }
    void getTextShadowVerticalExtent(LayoutUnit& top, LayoutUnit& bottom) const { getShadowVerticalExtent(textShadow(), top, bottom); }
    void getTextShadowInlineDirectionExtent(LayoutUnit& logicalLeft, LayoutUnit& logicalRight) { getShadowInlineDirectionExtent(textShadow(), logicalLeft, logicalRight); }
    void getTextShadowBlockDirectionExtent(LayoutUnit& logicalTop, LayoutUnit& logicalBottom) { getShadowBlockDirectionExtent(textShadow(), logicalTop, logicalBottom); }

    float textStrokeWidth() const { return rareInheritedData->textStrokeWidth; }
    float opacity() const { return rareNonInheritedData->opacity; }
    bool hasOpacity() const { return opacity() < 1.0f; }
    // aspect ratio convenience method
    bool hasAspectRatio() const { return rareNonInheritedData->m_hasAspectRatio; }
    float aspectRatio() const { return aspectRatioNumerator() / aspectRatioDenominator(); }
    float aspectRatioDenominator() const { return rareNonInheritedData->m_aspectRatioDenominator; }
    float aspectRatioNumerator() const { return rareNonInheritedData->m_aspectRatioNumerator; }

    int order() const { return rareNonInheritedData->m_order; }
    float flexGrow() const { return rareNonInheritedData->m_flexibleBox->m_flexGrow; }
    float flexShrink() const { return rareNonInheritedData->m_flexibleBox->m_flexShrink; }
    const Length& flexBasis() const { return rareNonInheritedData->m_flexibleBox->m_flexBasis; }
    EAlignContent alignContent() const { return static_cast<EAlignContent>(rareNonInheritedData->m_alignContent); }
    ItemPosition alignItems() const { return static_cast<ItemPosition>(rareNonInheritedData->m_alignItems); }
    OverflowAlignment alignItemsOverflowAlignment() const { return static_cast<OverflowAlignment>(rareNonInheritedData->m_alignItemsOverflowAlignment); }
    ItemPosition alignSelf() const { return static_cast<ItemPosition>(rareNonInheritedData->m_alignSelf); }
    OverflowAlignment alignSelfOverflowAlignment() const { return static_cast<OverflowAlignment>(rareNonInheritedData->m_alignSelfOverflowAlignment); }
    EFlexDirection flexDirection() const { return static_cast<EFlexDirection>(rareNonInheritedData->m_flexibleBox->m_flexDirection); }
    bool isColumnFlexDirection() const { return flexDirection() == FlowColumn || flexDirection() == FlowColumnReverse; }
    bool isReverseFlexDirection() const { return flexDirection() == FlowRowReverse || flexDirection() == FlowColumnReverse; }
    EFlexWrap flexWrap() const { return static_cast<EFlexWrap>(rareNonInheritedData->m_flexibleBox->m_flexWrap); }
    EJustifyContent justifyContent() const { return static_cast<EJustifyContent>(rareNonInheritedData->m_justifyContent); }
    ItemPosition justifyItems() const { return static_cast<ItemPosition>(rareNonInheritedData->m_justifyItems); }
    OverflowAlignment justifyItemsOverflowAlignment() const { return static_cast<OverflowAlignment>(rareNonInheritedData->m_justifyItemsOverflowAlignment); }
    ItemPositionType justifyItemsPositionType() const { return static_cast<ItemPositionType>(rareNonInheritedData->m_justifyItemsPositionType); }
    ItemPosition justifySelf() const { return static_cast<ItemPosition>(rareNonInheritedData->m_justifySelf); }
    OverflowAlignment justifySelfOverflowAlignment() const { return static_cast<OverflowAlignment>(rareNonInheritedData->m_justifySelfOverflowAlignment); }

    ShadowList* boxShadow() const { return rareNonInheritedData->m_boxShadow.get(); }
    void getBoxShadowExtent(LayoutUnit& top, LayoutUnit& right, LayoutUnit& bottom, LayoutUnit& left) const { getShadowExtent(boxShadow(), top, right, bottom, left); }
    LayoutBoxExtent getBoxShadowInsetExtent() const { return getShadowInsetExtent(boxShadow()); }
    void getBoxShadowHorizontalExtent(LayoutUnit& left, LayoutUnit& right) const { getShadowHorizontalExtent(boxShadow(), left, right); }
    void getBoxShadowVerticalExtent(LayoutUnit& top, LayoutUnit& bottom) const { getShadowVerticalExtent(boxShadow(), top, bottom); }
    void getBoxShadowInlineDirectionExtent(LayoutUnit& logicalLeft, LayoutUnit& logicalRight) { getShadowInlineDirectionExtent(boxShadow(), logicalLeft, logicalRight); }
    void getBoxShadowBlockDirectionExtent(LayoutUnit& logicalTop, LayoutUnit& logicalBottom) { getShadowBlockDirectionExtent(boxShadow(), logicalTop, logicalBottom); }

    EBoxDecorationBreak boxDecorationBreak() const { return m_box->boxDecorationBreak(); }

    // FIXME: reflections should belong to this helper function but they are currently handled
    // through their self-painting layers. So the rendering code doesn't account for them.
    bool hasVisualOverflowingEffect() const { return boxShadow() || hasOutline(); }

    EBoxSizing boxSizing() const { return m_box->boxSizing(); }
    EUserModify userModify() const { return static_cast<EUserModify>(rareInheritedData->userModify); }
    EUserSelect userSelect() const { return static_cast<EUserSelect>(rareInheritedData->userSelect); }
    TextOverflow textOverflow() const { return static_cast<TextOverflow>(rareNonInheritedData->textOverflow); }
    EWordBreak wordBreak() const { return static_cast<EWordBreak>(rareInheritedData->wordBreak); }
    EOverflowWrap overflowWrap() const { return static_cast<EOverflowWrap>(rareInheritedData->overflowWrap); }
    LineBreak lineBreak() const { return static_cast<LineBreak>(rareInheritedData->lineBreak); }
    const AtomicString& highlight() const { return rareInheritedData->highlight; }
    const AtomicString& hyphenationString() const { return rareInheritedData->hyphenationString; }
    const AtomicString& locale() const { return rareInheritedData->locale; }
    const TransformOperations& transform() const { return rareNonInheritedData->m_transform->m_operations; }
    const Length& transformOriginX() const { return rareNonInheritedData->m_transform->m_x; }
    const Length& transformOriginY() const { return rareNonInheritedData->m_transform->m_y; }
    float transformOriginZ() const { return rareNonInheritedData->m_transform->m_z; }
    bool hasTransform() const { return !rareNonInheritedData->m_transform->m_operations.operations().isEmpty(); }
    bool transformDataEquivalent(const RenderStyle& otherStyle) const { return rareNonInheritedData->m_transform == otherStyle.rareNonInheritedData->m_transform; }

    TextEmphasisFill textEmphasisFill() const { return static_cast<TextEmphasisFill>(rareInheritedData->textEmphasisFill); }
    TextEmphasisMark textEmphasisMark() const;
    const AtomicString& textEmphasisCustomMark() const { return rareInheritedData->textEmphasisCustomMark; }
    TextEmphasisPosition textEmphasisPosition() const { return static_cast<TextEmphasisPosition>(rareInheritedData->textEmphasisPosition); }
    const AtomicString& textEmphasisMarkString() const;

    TextOrientation textOrientation() const { return static_cast<TextOrientation>(rareInheritedData->m_textOrientation); }

    ObjectFit objectFit() const { return static_cast<ObjectFit>(rareNonInheritedData->m_objectFit); }
    LengthPoint objectPosition() const { return rareNonInheritedData->m_objectPosition; }

    // Return true if any transform related property (currently transform, transformStyle3D or perspective)
    // indicates that we are transforming
    bool hasTransformRelatedProperty() const { return hasTransform() || preserves3D() || hasPerspective(); }

    enum ApplyTransformOrigin { IncludeTransformOrigin, ExcludeTransformOrigin };
    void applyTransform(TransformationMatrix&, const LayoutSize& borderBoxSize, ApplyTransformOrigin = IncludeTransformOrigin) const;
    void applyTransform(TransformationMatrix&, const FloatRect& boundingBox, ApplyTransformOrigin = IncludeTransformOrigin) const;

    unsigned tabSize() const { return rareInheritedData->m_tabSize; }

    // End CSS3 Getters

    WrapFlow wrapFlow() const { return static_cast<WrapFlow>(rareNonInheritedData->m_wrapFlow); }
    WrapThrough wrapThrough() const { return static_cast<WrapThrough>(rareNonInheritedData->m_wrapThrough); }

    // Apple-specific property getter methods
    EPointerEvents pointerEvents() const { return static_cast<EPointerEvents>(inherited_flags._pointerEvents); }

    ETransformStyle3D transformStyle3D() const { return static_cast<ETransformStyle3D>(rareNonInheritedData->m_transformStyle3D); }
    bool preserves3D() const { return rareNonInheritedData->m_transformStyle3D == TransformStyle3DPreserve3D; }

    float perspective() const { return rareNonInheritedData->m_perspective; }
    bool hasPerspective() const { return rareNonInheritedData->m_perspective > 0; }
    const Length& perspectiveOriginX() const { return rareNonInheritedData->m_perspectiveOriginX; }
    const Length& perspectiveOriginY() const { return rareNonInheritedData->m_perspectiveOriginY; }

    LineBoxContain lineBoxContain() const { return rareInheritedData->m_lineBoxContain; }
    Color tapHighlightColor() const { return rareInheritedData->tapHighlightColor; }

    EImageRendering imageRendering() const { return static_cast<EImageRendering>(rareInheritedData->m_imageRendering); }

    FilterOperations& mutableFilter() { return rareNonInheritedData.access()->m_filter.access()->m_operations; }
    const FilterOperations& filter() const { return rareNonInheritedData->m_filter->m_operations; }
    bool hasFilter() const { return !rareNonInheritedData->m_filter->m_operations.operations().isEmpty(); }

    TouchAction touchAction() const { return static_cast<TouchAction>(rareNonInheritedData->m_touchAction); }
    TouchActionDelay touchActionDelay() const { return static_cast<TouchActionDelay>(rareInheritedData->m_touchActionDelay); }

// attribute setter methods

    void setDisplay(EDisplay v) { noninherited_flags.effectiveDisplay = v; }
    void setOriginalDisplay(EDisplay v) { noninherited_flags.originalDisplay = v; }
    void setPosition(EPosition v) { noninherited_flags.position = v; }

    void setLeft(const Length& v) { SET_VAR(surround, offset.m_left, v); }
    void setRight(const Length& v) { SET_VAR(surround, offset.m_right, v); }
    void setTop(const Length& v) { SET_VAR(surround, offset.m_top, v); }
    void setBottom(const Length& v) { SET_VAR(surround, offset.m_bottom, v); }

    void setWidth(const Length& v) { SET_VAR(m_box, m_width, v); }
    void setHeight(const Length& v) { SET_VAR(m_box, m_height, v); }

    void setLogicalWidth(const Length& v)
    {
        // FIXME(sky): Remove
        SET_VAR(m_box, m_width, v);
    }

    void setLogicalHeight(const Length& v)
    {
        // FIXME(sky): Remove
        SET_VAR(m_box, m_height, v);
    }

    void setMinWidth(const Length& v) { SET_VAR(m_box, m_minWidth, v); }
    void setMaxWidth(const Length& v) { SET_VAR(m_box, m_maxWidth, v); }
    void setMinHeight(const Length& v) { SET_VAR(m_box, m_minHeight, v); }
    void setMaxHeight(const Length& v) { SET_VAR(m_box, m_maxHeight, v); }

    void resetBorder()
    {
        resetBorderTop();
        resetBorderRight();
        resetBorderBottom();
        resetBorderLeft();
        resetBorderTopLeftRadius();
        resetBorderTopRightRadius();
        resetBorderBottomLeftRadius();
        resetBorderBottomRightRadius();
    }
    void resetBorderTop() { SET_VAR(surround, border.m_top, BorderValue()); }
    void resetBorderRight() { SET_VAR(surround, border.m_right, BorderValue()); }
    void resetBorderBottom() { SET_VAR(surround, border.m_bottom, BorderValue()); }
    void resetBorderLeft() { SET_VAR(surround, border.m_left, BorderValue()); }
    void resetBorderTopLeftRadius() { SET_VAR(surround, border.m_topLeft, initialBorderRadius()); }
    void resetBorderTopRightRadius() { SET_VAR(surround, border.m_topRight, initialBorderRadius()); }
    void resetBorderBottomLeftRadius() { SET_VAR(surround, border.m_bottomLeft, initialBorderRadius()); }
    void resetBorderBottomRightRadius() { SET_VAR(surround, border.m_bottomRight, initialBorderRadius()); }

    void setBackgroundColor(const StyleColor& v) { SET_VAR(m_background, m_color, v); }

    void setBackgroundXPosition(const Length& length) { SET_VAR(m_background, m_background.m_xPosition, length); }
    void setBackgroundYPosition(const Length& length) { SET_VAR(m_background, m_background.m_yPosition, length); }
    void setBackgroundSize(EFillSizeType b) { SET_VAR(m_background, m_background.m_sizeType, b); }
    void setBackgroundSizeLength(const LengthSize& s) { SET_VAR(m_background, m_background.m_sizeLength, s); }

    void setBorderTopLeftRadius(const LengthSize& s) { SET_VAR(surround, border.m_topLeft, s); }
    void setBorderTopRightRadius(const LengthSize& s) { SET_VAR(surround, border.m_topRight, s); }
    void setBorderBottomLeftRadius(const LengthSize& s) { SET_VAR(surround, border.m_bottomLeft, s); }
    void setBorderBottomRightRadius(const LengthSize& s) { SET_VAR(surround, border.m_bottomRight, s); }

    void setBorderRadius(const LengthSize& s)
    {
        setBorderTopLeftRadius(s);
        setBorderTopRightRadius(s);
        setBorderBottomLeftRadius(s);
        setBorderBottomRightRadius(s);
    }
    void setBorderRadius(const IntSize& s)
    {
        setBorderRadius(LengthSize(Length(s.width(), Fixed), Length(s.height(), Fixed)));
    }

    RoundedRect getRoundedBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true) const;
    RoundedRect getRoundedInnerBorderFor(const LayoutRect& borderRect, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true) const;

    RoundedRect getRoundedInnerBorderFor(const LayoutRect& borderRect,
        int topWidth, int bottomWidth, int leftWidth, int rightWidth, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const;

    void setBorderLeftWidth(unsigned v) { SET_VAR(surround, border.m_left.m_width, v); }
    void setBorderLeftStyle(EBorderStyle v) { SET_VAR(surround, border.m_left.m_style, v); }
    void setBorderLeftColor(const StyleColor& v) { SET_BORDERVALUE_COLOR(surround, border.m_left, v); }
    void setBorderRightWidth(unsigned v) { SET_VAR(surround, border.m_right.m_width, v); }
    void setBorderRightStyle(EBorderStyle v) { SET_VAR(surround, border.m_right.m_style, v); }
    void setBorderRightColor(const StyleColor& v) { SET_BORDERVALUE_COLOR(surround, border.m_right, v); }
    void setBorderTopWidth(unsigned v) { SET_VAR(surround, border.m_top.m_width, v); }
    void setBorderTopStyle(EBorderStyle v) { SET_VAR(surround, border.m_top.m_style, v); }
    void setBorderTopColor(const StyleColor& v) { SET_BORDERVALUE_COLOR(surround, border.m_top, v); }
    void setBorderBottomWidth(unsigned v) { SET_VAR(surround, border.m_bottom.m_width, v); }
    void setBorderBottomStyle(EBorderStyle v) { SET_VAR(surround, border.m_bottom.m_style, v); }
    void setBorderBottomColor(const StyleColor& v) { SET_BORDERVALUE_COLOR(surround, border.m_bottom, v); }

    void setOutlineWidth(unsigned short v) { SET_VAR(m_background, m_outline.m_width, v); }
    void setOutlineStyleIsAuto(OutlineIsAuto isAuto) { SET_VAR(m_background, m_outline.m_isAuto, isAuto); }
    void setOutlineStyle(EBorderStyle v) { SET_VAR(m_background, m_outline.m_style, v); }
    void setOutlineColor(const StyleColor& v) { SET_BORDERVALUE_COLOR(m_background, m_outline, v); }

    void setOverflowX(EOverflow v) { noninherited_flags.overflowX = v; }
    void setOverflowY(EOverflow v) { noninherited_flags.overflowY = v; }
    void setVisibility(EVisibility v) { inherited_flags._visibility = v; }
    void setVerticalAlign(EVerticalAlign v) { noninherited_flags.verticalAlign = v; }
    void setVerticalAlignLength(const Length& length) { setVerticalAlign(LENGTH); SET_VAR(m_box, m_verticalAlign, length); }

    void setHasAutoClip() { SET_VAR(visual, hasAutoClip, true); SET_VAR(visual, clip, RenderStyle::initialClip()); }
    void setClip(const LengthBox& box) { SET_VAR(visual, hasAutoClip, false); SET_VAR(visual, clip, box); }

    void setUnicodeBidi(EUnicodeBidi b) { noninherited_flags.unicodeBidi = b; }

    bool setFontDescription(const FontDescription&);
    // Only used for text autosizing.
    void setFontSize(float);
    void setFontStretch(FontStretch);
    void setFontWeight(FontWeight);

    void setColor(const Color&);
    void setTextIndent(const Length& v) { SET_VAR(rareInheritedData, indent, v); }
    void setTextIndentLine(TextIndentLine v) { SET_VAR(rareInheritedData, m_textIndentLine, v); }
    void setTextIndentType(TextIndentType v) { SET_VAR(rareInheritedData, m_textIndentType, v); }
    void setTextAlign(ETextAlign v) { inherited_flags._text_align = v; }
    void setTextAlignLast(TextAlignLast v) { SET_VAR(rareInheritedData, m_textAlignLast, v); }
    void setTextJustify(TextJustify v) { SET_VAR(rareInheritedData, m_textJustify, v); }
    void applyTextDecorations();
    void clearAppliedTextDecorations();
    void setTextDecoration(TextDecoration v) { SET_VAR(visual, textDecoration, v); }
    void setTextUnderlinePosition(TextUnderlinePosition v) { SET_VAR(rareInheritedData, m_textUnderlinePosition, v); }
    void setTextDecorationStyle(TextDecorationStyle v) { SET_VAR(rareNonInheritedData, m_textDecorationStyle, v); }
    void setDirection(TextDirection v) { inherited_flags._direction = v; }
    void setLineHeight(const Length& specifiedLineHeight);

    void setImageRendering(EImageRendering v) { SET_VAR(rareInheritedData, m_imageRendering, v); }

    void setWhiteSpace(EWhiteSpace v) { inherited_flags._white_space = v; }

    // FIXME: Remove these two and replace them with respective FontBuilder calls.
    void setWordSpacing(float);
    void setLetterSpacing(float);

    void adjustBackgroundLayers()
    {
        if (backgroundLayers().next()) {
            accessBackgroundLayers().cullEmptyLayers();
            accessBackgroundLayers().fillUnsetProperties();
        }
    }

    void setHorizontalBorderSpacing(short);
    void setVerticalBorderSpacing(short);

    void setHasAspectRatio(bool b) { SET_VAR(rareNonInheritedData, m_hasAspectRatio, b); }
    void setAspectRatioDenominator(float v) { SET_VAR(rareNonInheritedData, m_aspectRatioDenominator, v); }
    void setAspectRatioNumerator(float v) { SET_VAR(rareNonInheritedData, m_aspectRatioNumerator, v); }

    void setMarginTop(const Length& v) { SET_VAR(surround, margin.m_top, v); }
    void setMarginBottom(const Length& v) { SET_VAR(surround, margin.m_bottom, v); }
    void setMarginLeft(const Length& v) { SET_VAR(surround, margin.m_left, v); }
    void setMarginRight(const Length& v) { SET_VAR(surround, margin.m_right, v); }
    void setMarginStart(const Length&);
    void setMarginEnd(const Length&);

    void resetPadding() { SET_VAR(surround, padding, LengthBox(Auto)); }
    void setPaddingBox(const LengthBox& b) { SET_VAR(surround, padding, b); }
    void setPaddingTop(const Length& v) { SET_VAR(surround, padding.m_top, v); }
    void setPaddingBottom(const Length& v) { SET_VAR(surround, padding.m_bottom, v); }
    void setPaddingLeft(const Length& v) { SET_VAR(surround, padding.m_left, v); }
    void setPaddingRight(const Length& v) { SET_VAR(surround, padding.m_right, v); }

    void setIsLink(bool b) { noninherited_flags.isLink = b; }

    bool hasAutoZIndex() const { return m_box->hasAutoZIndex(); }
    void setHasAutoZIndex() { SET_VAR(m_box, m_hasAutoZIndex, true); SET_VAR(m_box, m_zIndex, 0); }
    unsigned zIndex() const { return m_box->zIndex(); }
    void setZIndex(unsigned v) { SET_VAR(m_box, m_hasAutoZIndex, false); SET_VAR(m_box, m_zIndex, v); }

    // CSS3 Setters
    void setOutlineOffset(int v) { SET_VAR(m_background, m_outline.m_offset, v); }
    void setTextShadow(PassRefPtr<ShadowList>);
    void setTextStrokeColor(const StyleColor& c) { SET_VAR_WITH_SETTER(rareInheritedData, textStrokeColor, setTextStrokeColor, c); }
    void setTextStrokeWidth(float w) { SET_VAR(rareInheritedData, textStrokeWidth, w); }
    void setTextFillColor(const StyleColor& c) { SET_VAR_WITH_SETTER(rareInheritedData, textFillColor, setTextFillColor, c); }
    void setOpacity(float f) { float v = clampTo<float>(f, 0, 1); SET_VAR(rareNonInheritedData, opacity, v); }
    // For valid values of box-align see http://www.w3.org/TR/2009/WD-css3-flexbox-20090723/#alignment
    void setBoxDecorationBreak(EBoxDecorationBreak b) { SET_VAR(m_box, m_boxDecorationBreak, b); }
    void setBoxShadow(PassRefPtr<ShadowList>);
    void setBoxSizing(EBoxSizing s) { SET_VAR(m_box, m_boxSizing, s); }
    void setFlexGrow(float f) { SET_VAR(rareNonInheritedData.access()->m_flexibleBox, m_flexGrow, f); }
    void setFlexShrink(float f) { SET_VAR(rareNonInheritedData.access()->m_flexibleBox, m_flexShrink, f); }
    void setFlexBasis(const Length& length) { SET_VAR(rareNonInheritedData.access()->m_flexibleBox, m_flexBasis, length); }
    // We restrict the smallest value to int min + 2 because we use int min and int min + 1 as special values in a hash set.
    void setOrder(int o) { SET_VAR(rareNonInheritedData, m_order, max(std::numeric_limits<int>::min() + 2, o)); }
    void setAlignContent(EAlignContent p) { SET_VAR(rareNonInheritedData, m_alignContent, p); }
    void setAlignItems(ItemPosition a) { SET_VAR(rareNonInheritedData, m_alignItems, a); }
    void setAlignItemsOverflowAlignment(OverflowAlignment overflowAlignment) { SET_VAR(rareNonInheritedData, m_alignItemsOverflowAlignment, overflowAlignment); }
    void setAlignSelf(ItemPosition a) { SET_VAR(rareNonInheritedData, m_alignSelf, a); }
    void setAlignSelfOverflowAlignment(OverflowAlignment overflowAlignment) { SET_VAR(rareNonInheritedData, m_alignSelfOverflowAlignment, overflowAlignment); }
    void setFlexDirection(EFlexDirection direction) { SET_VAR(rareNonInheritedData.access()->m_flexibleBox, m_flexDirection, direction); }
    void setFlexWrap(EFlexWrap w) { SET_VAR(rareNonInheritedData.access()->m_flexibleBox, m_flexWrap, w); }
    void setJustifyContent(EJustifyContent p) { SET_VAR(rareNonInheritedData, m_justifyContent, p); }
    void setJustifyItems(ItemPosition justifyItems) { SET_VAR(rareNonInheritedData, m_justifyItems, justifyItems); }
    void setJustifyItemsOverflowAlignment(OverflowAlignment overflowAlignment) { SET_VAR(rareNonInheritedData, m_justifyItemsOverflowAlignment, overflowAlignment); }
    void setJustifyItemsPositionType(ItemPositionType positionType) { SET_VAR(rareNonInheritedData, m_justifyItemsPositionType, positionType); }
    void setJustifySelf(ItemPosition justifySelf) { SET_VAR(rareNonInheritedData, m_justifySelf, justifySelf); }
    void setJustifySelfOverflowAlignment(OverflowAlignment overflowAlignment) { SET_VAR(rareNonInheritedData, m_justifySelfOverflowAlignment, overflowAlignment); }

    void setUserModify(EUserModify u) { SET_VAR(rareInheritedData, userModify, u); }
    void setUserSelect(EUserSelect s) { SET_VAR(rareInheritedData, userSelect, s); }
    void setTextOverflow(TextOverflow overflow) { SET_VAR(rareNonInheritedData, textOverflow, overflow); }
    void setWordBreak(EWordBreak b) { SET_VAR(rareInheritedData, wordBreak, b); }
    void setOverflowWrap(EOverflowWrap b) { SET_VAR(rareInheritedData, overflowWrap, b); }
    void setLineBreak(LineBreak b) { SET_VAR(rareInheritedData, lineBreak, b); }
    void setHighlight(const AtomicString& h) { SET_VAR(rareInheritedData, highlight, h); }
    void setHyphens(Hyphens h) { SET_VAR(rareInheritedData, hyphens, h); }
    void setHyphenationString(const AtomicString& h) { SET_VAR(rareInheritedData, hyphenationString, h); }
    void setLocale(const AtomicString& locale) { SET_VAR(rareInheritedData, locale, locale); }
    void setTransform(const TransformOperations& ops) { SET_VAR(rareNonInheritedData.access()->m_transform, m_operations, ops); }
    void setTransformOriginX(const Length& l) { SET_VAR(rareNonInheritedData.access()->m_transform, m_x, l); }
    void setTransformOriginY(const Length& l) { SET_VAR(rareNonInheritedData.access()->m_transform, m_y, l); }
    void setTransformOriginZ(float f) { SET_VAR(rareNonInheritedData.access()->m_transform, m_z, f); }
    void setTextDecorationColor(const StyleColor& c) { SET_VAR(rareNonInheritedData, m_textDecorationColor, c); }
    void setTextEmphasisColor(const StyleColor& c) { SET_VAR_WITH_SETTER(rareInheritedData, textEmphasisColor, setTextEmphasisColor, c); }
    void setTextEmphasisFill(TextEmphasisFill fill) { SET_VAR(rareInheritedData, textEmphasisFill, fill); }
    void setTextEmphasisMark(TextEmphasisMark mark) { SET_VAR(rareInheritedData, textEmphasisMark, mark); }
    void setTextEmphasisCustomMark(const AtomicString& mark) { SET_VAR(rareInheritedData, textEmphasisCustomMark, mark); }
    void setTextEmphasisPosition(TextEmphasisPosition position) { SET_VAR(rareInheritedData, textEmphasisPosition, position); }
    bool setTextOrientation(TextOrientation);

    void setObjectFit(ObjectFit f) { SET_VAR(rareNonInheritedData, m_objectFit, f); }
    void setObjectPosition(LengthPoint position) { SET_VAR(rareNonInheritedData, m_objectPosition, position); }

    void setFilter(const FilterOperations& ops) { SET_VAR(rareNonInheritedData.access()->m_filter, m_operations, ops); }

    void setTabSize(unsigned size) { SET_VAR(rareInheritedData, m_tabSize, size); }

    // End CSS3 Setters

    void setWrapFlow(WrapFlow wrapFlow) { SET_VAR(rareNonInheritedData, m_wrapFlow, wrapFlow); }
    void setWrapThrough(WrapThrough wrapThrough) { SET_VAR(rareNonInheritedData, m_wrapThrough, wrapThrough); }

    // Apple-specific property setters
    void setPointerEvents(EPointerEvents p) { inherited_flags._pointerEvents = p; }

    void setTransformStyle3D(ETransformStyle3D b) { SET_VAR(rareNonInheritedData, m_transformStyle3D, b); }
    void setPerspective(float p) { SET_VAR(rareNonInheritedData, m_perspective, p); }
    void setPerspectiveOriginX(const Length& l) { SET_VAR(rareNonInheritedData, m_perspectiveOriginX, l); }
    void setPerspectiveOriginY(const Length& l) { SET_VAR(rareNonInheritedData, m_perspectiveOriginY, l); }

    void setLineBoxContain(LineBoxContain c) { SET_VAR(rareInheritedData, m_lineBoxContain, c); }
    void setTapHighlightColor(const Color& c) { SET_VAR(rareInheritedData, tapHighlightColor, c); }
    void setTouchAction(TouchAction t) { SET_VAR(rareNonInheritedData, m_touchAction, t); }
    void setTouchActionDelay(TouchActionDelay t) { SET_VAR(rareInheritedData, m_touchActionDelay, t); }

    void setClipPath(PassRefPtr<ClipPathOperation> operation)
    {
        if (rareNonInheritedData->m_clipPath != operation)
            rareNonInheritedData.access()->m_clipPath = operation;
    }
    ClipPathOperation* clipPath() const { return rareNonInheritedData->m_clipPath.get(); }

    static ClipPathOperation* initialClipPath() { return 0; }

    const CounterDirectiveMap* counterDirectives() const;
    CounterDirectiveMap& accessCounterDirectives();
    const CounterDirectives getCounterDirectives(const AtomicString& identifier) const;

    const AtomicString& hyphenString() const;

    bool inheritedNotEqual(const RenderStyle*) const;
    bool inheritedDataShared(const RenderStyle*) const;

    bool requiresOnlyBlockChildren() const;
    bool isDisplayReplacedType() const { return isDisplayReplacedType(display()); }
    bool isDisplayInlineType() const { return isDisplayInlineType(display()); }
    bool isOriginalDisplayInlineType() const { return isDisplayInlineType(originalDisplay()); }
    bool isDisplayFlexibleBox() const { return isDisplayFlexibleBox(display()); }

    // A unique style is one that has matches something that makes it impossible to share.
    bool unique() const { return noninherited_flags.unique; }
    void setUnique() { noninherited_flags.unique = true; }

    bool isSharable() const;

    bool emptyState() const { return noninherited_flags.emptyState; }
    void setEmptyState(bool b) { setUnique(); noninherited_flags.emptyState = b; }
    bool firstChildState() const { return noninherited_flags.firstChildState; }
    void setFirstChildState() { setUnique(); noninherited_flags.firstChildState = true; }
    bool lastChildState() const { return noninherited_flags.lastChildState; }
    void setLastChildState() { setUnique(); noninherited_flags.lastChildState = true; }

    StyleColor decorationStyleColor() const;
    Color decorationColor() const;

    void setHasExplicitlyInheritedProperties() { noninherited_flags.explicitInheritance = true; }
    bool hasExplicitlyInheritedProperties() const { return noninherited_flags.explicitInheritance; }

    void setHasCurrentColor() { noninherited_flags.currentColor = true; }
    bool hasCurrentColor() const { return noninherited_flags.currentColor; }

    bool hasBoxDecorations() const { return hasBorder() || hasBorderRadius() || hasOutline() || boxShadow() || hasFilter(); }

    // Initial values for all the properties
    static EBorderStyle initialBorderStyle() { return BNONE; }
    static OutlineIsAuto initialOutlineStyleIsAuto() { return AUTO_OFF; }
    static LengthSize initialBorderRadius() { return LengthSize(Length(0, Fixed), Length(0, Fixed)); }
    static LengthBox initialClip() { return LengthBox(); }
    static TextDirection initialDirection() { return LTR; }
    static TextOrientation initialTextOrientation() { return TextOrientationVerticalRight; }
    static ObjectFit initialObjectFit() { return ObjectFitFill; }
    static LengthPoint initialObjectPosition() { return LengthPoint(Length(50.0, Percent), Length(50.0, Percent)); }
    static EDisplay initialDisplay() { return FLEX; }
    static EOverflow initialOverflowX() { return OVISIBLE; }
    static EOverflow initialOverflowY() { return OVISIBLE; }
    static EPosition initialPosition() { return StaticPosition; }
    static EUnicodeBidi initialUnicodeBidi() { return UBNormal; }
    static EVisibility initialVisibility() { return VISIBLE; }
    static EWhiteSpace initialWhiteSpace() { return PRE_LINE; }
    static short initialHorizontalBorderSpacing() { return 0; }
    static short initialVerticalBorderSpacing() { return 0; }
    static Color initialColor() { return Color::white; }
    static unsigned initialBorderWidth() { return 3; }
    static unsigned short initialColumnRuleWidth() { return 3; }
    static unsigned short initialOutlineWidth() { return 3; }
    static float initialLetterWordSpacing() { return 0.0f; }
    static Length initialSize() { return Length(); }
    static Length initialMinSize() { return Length(Fixed); }
    static Length initialMaxSize() { return Length(MaxSizeNone); }
    static Length initialOffset() { return Length(); }
    static Length initialMargin() { return Length(Fixed); }
    static Length initialPadding() { return Length(Fixed); }
    static Length initialTextIndent() { return Length(Fixed); }
    static TextIndentLine initialTextIndentLine() { return TextIndentFirstLine; }
    static TextIndentType initialTextIndentType() { return TextIndentNormal; }
    static EVerticalAlign initialVerticalAlign() { return BASELINE; }
    static Length initialLineHeight() { return Length(-100.0, Percent); }
    static ETextAlign initialTextAlign() { return TASTART; }
    static TextAlignLast initialTextAlignLast() { return TextAlignLastAuto; }
    static TextJustify initialTextJustify() { return TextJustifyAuto; }
    static TextDecoration initialTextDecoration() { return TextDecorationNone; }
    static TextUnderlinePosition initialTextUnderlinePosition() { return TextUnderlinePositionAuto; }
    static TextDecorationStyle initialTextDecorationStyle() { return TextDecorationStyleSolid; }
    static int initialOutlineOffset() { return 0; }
    static float initialOpacity() { return 1.0f; }
    static EBoxAlignment initialBoxAlign() { return BSTRETCH; }
    static EBoxDecorationBreak initialBoxDecorationBreak() { return DSLICE; }
    static EBoxDirection initialBoxDirection() { return BNORMAL; }
    static EBoxLines initialBoxLines() { return SINGLE; }
    static EBoxOrient initialBoxOrient() { return HORIZONTAL; }
    static EBoxPack initialBoxPack() { return Start; }
    static float initialBoxFlex() { return 0.0f; }
    static unsigned initialBoxFlexGroup() { return 1; }
    static unsigned initialBoxOrdinalGroup() { return 1; }
    static EBoxSizing initialBoxSizing() { return CONTENT_BOX; }
    static float initialFlexGrow() { return 0; }
    static float initialFlexShrink() { return 0; }
    static Length initialFlexBasis() { return Length(Auto); }
    static int initialOrder() { return 0; }
    static EAlignContent initialAlignContent() { return AlignContentStretch; }
    static ItemPosition initialAlignItems() { return ItemPositionStretch; }
    static OverflowAlignment initialAlignItemsOverflowAlignment() { return OverflowAlignmentDefault; }
    static ItemPosition initialAlignSelf() { return ItemPositionAuto; }
    static OverflowAlignment initialAlignSelfOverflowAlignment() { return OverflowAlignmentDefault; }
    static EFlexDirection initialFlexDirection() { return FlowColumn; }
    static EFlexWrap initialFlexWrap() { return FlexNoWrap; }
    static EJustifyContent initialJustifyContent() { return JustifyFlexStart; }
    static ItemPosition initialJustifyItems() { return ItemPositionAuto; }
    static OverflowAlignment initialJustifyItemsOverflowAlignment() { return OverflowAlignmentDefault; }
    static ItemPositionType initialJustifyItemsPositionType() { return NonLegacyPosition; }
    static ItemPosition initialJustifySelf() { return ItemPositionAuto; }
    static OverflowAlignment initialJustifySelfOverflowAlignment() { return OverflowAlignmentDefault; }
    static EUserModify initialUserModify() { return READ_ONLY; }
    static EUserSelect initialUserSelect() { return SELECT_TEXT; }
    static TextOverflow initialTextOverflow() { return TextOverflowClip; }
    static EWordBreak initialWordBreak() { return NormalWordBreak; }
    static EOverflowWrap initialOverflowWrap() { return NormalOverflowWrap; }
    static LineBreak initialLineBreak() { return LineBreakAuto; }
    static const AtomicString& initialHighlight() { return nullAtom; }
    static const AtomicString& initialHyphenationString() { return nullAtom; }
    static const AtomicString& initialLocale() { return nullAtom; }
    static bool initialHasAspectRatio() { return false; }
    static float initialAspectRatioDenominator() { return 1; }
    static float initialAspectRatioNumerator() { return 1; }
    static Order initialRTLOrdering() { return LogicalOrder; }
    static float initialTextStrokeWidth() { return 0; }
    static unsigned short initialColumnCount() { return 1; }
    static ColumnFill initialColumnFill() { return ColumnFillBalance; }
    static const TransformOperations& initialTransform() { DEFINE_STATIC_LOCAL(TransformOperations, ops, ()); return ops; }
    static Length initialTransformOriginX() { return Length(50.0, Percent); }
    static Length initialTransformOriginY() { return Length(50.0, Percent); }
    static EPointerEvents initialPointerEvents() { return PE_AUTO; }
    static float initialTransformOriginZ() { return 0; }
    static ETransformStyle3D initialTransformStyle3D() { return TransformStyle3DFlat; }
    static float initialPerspective() { return 0; }
    static Length initialPerspectiveOriginX() { return Length(50.0, Percent); }
    static Length initialPerspectiveOriginY() { return Length(50.0, Percent); }
    static Color initialBackgroundColor() { return Color::transparent; }
    static TextEmphasisFill initialTextEmphasisFill() { return TextEmphasisFillFilled; }
    static TextEmphasisMark initialTextEmphasisMark() { return TextEmphasisMarkNone; }
    static const AtomicString& initialTextEmphasisCustomMark() { return nullAtom; }
    static TextEmphasisPosition initialTextEmphasisPosition() { return TextEmphasisPositionOver; }
    static LineBoxContain initialLineBoxContain() { return LineBoxContainBlock | LineBoxContainInline | LineBoxContainReplaced; }
    static ImageOrientationEnum initialImageOrientation() { return OriginTopLeft; }
    static EImageRendering initialImageRendering() { return ImageRenderingAuto; }
    static ImageResolutionSource initialImageResolutionSource() { return ImageResolutionSpecified; }
    static ImageResolutionSnap initialImageResolutionSnap() { return ImageResolutionNoSnap; }
    static float initialImageResolution() { return 1; }
    static TouchAction initialTouchAction() { return TouchActionAuto; }
    static TouchActionDelay initialTouchActionDelay() { return TouchActionDelayScript; }
    static ShadowList* initialBoxShadow() { return 0; }
    static ShadowList* initialTextShadow() { return 0; }

    static unsigned initialTabSize() { return 8; }

    static WrapFlow initialWrapFlow() { return WrapFlowAuto; }
    static WrapThrough initialWrapThrough() { return WrapThroughWrap; }

    // Keep these at the end.
    // FIXME: Why? Seems these should all be one big sorted list.
    static Color initialTapHighlightColor();
    static const FilterOperations& initialFilter() { DEFINE_STATIC_LOCAL(FilterOperations, ops, ()); return ops; }

    Color colorIncludingFallback(int colorProperty) const;

private:
    void inheritUnicodeBidiFrom(const RenderStyle* parent) { noninherited_flags.unicodeBidi = parent->noninherited_flags.unicodeBidi; }
    void getShadowExtent(const ShadowList*, LayoutUnit& top, LayoutUnit& right, LayoutUnit& bottom, LayoutUnit& left) const;
    LayoutBoxExtent getShadowInsetExtent(const ShadowList*) const;
    void getShadowHorizontalExtent(const ShadowList*, LayoutUnit& left, LayoutUnit& right) const;
    void getShadowVerticalExtent(const ShadowList*, LayoutUnit& top, LayoutUnit& bottom) const;
    void getShadowInlineDirectionExtent(const ShadowList* shadow, LayoutUnit& logicalLeft, LayoutUnit& logicalRight) const
    {
        return getShadowHorizontalExtent(shadow, logicalLeft, logicalRight);
    }
    void getShadowBlockDirectionExtent(const ShadowList* shadow, LayoutUnit& logicalTop, LayoutUnit& logicalBottom) const
    {
        return getShadowVerticalExtent(shadow, logicalTop, logicalBottom);
    }

    bool isDisplayFlexibleBox(EDisplay display) const
    {
        return display == FLEX || display == INLINE_FLEX;
    }

    bool isDisplayReplacedType(EDisplay display) const
    {
        return display == INLINE_FLEX;
    }

    bool isDisplayInlineType(EDisplay display) const
    {
        return display == INLINE || isDisplayReplacedType(display);
    }

    // Color accessors are all private to make sure callers use colorIncludingFallback instead to access them.
    StyleColor borderLeftColor() const { return surround->border.left().color(); }
    StyleColor borderRightColor() const { return surround->border.right().color(); }
    StyleColor borderTopColor() const { return surround->border.top().color(); }
    StyleColor borderBottomColor() const { return surround->border.bottom().color(); }
    StyleColor backgroundColor() const { return m_background->color(); }
    Color color() const;
    StyleColor outlineColor() const { return m_background->outline().color(); }
    StyleColor textEmphasisColor() const { return rareInheritedData->textEmphasisColor(); }
    StyleColor textFillColor() const { return rareInheritedData->textFillColor(); }
    StyleColor textStrokeColor() const { return rareInheritedData->textStrokeColor(); }

    StyleColor textDecorationColor() const { return rareNonInheritedData->m_textDecorationColor; }

    void addAppliedTextDecoration(const AppliedTextDecoration&);

    bool diffNeedsFullLayout(const RenderStyle& other) const;
    bool diffNeedsRecompositeLayer(const RenderStyle& other) const;
    void updatePropertySpecificDifferences(const RenderStyle& other, StyleDifference&) const;
};

inline bool RenderStyle::isSharable() const
{
    return !unique();
}

inline bool RenderStyle::setTextOrientation(TextOrientation textOrientation)
{
    if (compareEqual(rareInheritedData->m_textOrientation, textOrientation))
        return false;

    rareInheritedData.access()->m_textOrientation = textOrientation;
    return true;
}

float calcBorderRadiiConstraintScaleFor(const FloatRect&, const FloatRoundedRect::Radii&);

} // namespace blink

#endif  // SKY_ENGINE_CORE_RENDERING_STYLE_RENDERSTYLE_H_