C++ RenderStyle::borderTopWidth方法代码示例

void RenderTheme::adjustStyle(StyleResolver& styleResolver, RenderStyle& style, Element* element, bool UAHasAppearance, const BorderData& border, const FillLayer& background, const Color& backgroundColor)
{
    // Force inline and table display styles to be inline-block (except for table- which is block)
    ControlPart part = style.appearance();
    if (style.display() == INLINE || style.display() == INLINE_TABLE || style.display() == TABLE_ROW_GROUP
        || style.display() == TABLE_HEADER_GROUP || style.display() == TABLE_FOOTER_GROUP
        || style.display() == TABLE_ROW || style.display() == TABLE_COLUMN_GROUP || style.display() == TABLE_COLUMN
        || style.display() == TABLE_CELL || style.display() == TABLE_CAPTION)
        style.setDisplay(INLINE_BLOCK);
    else if (style.display() == COMPACT || style.display() == LIST_ITEM || style.display() == TABLE)
        style.setDisplay(BLOCK);

    if (UAHasAppearance && isControlStyled(style, border, background, backgroundColor)) {
        if (part == MenulistPart) {
            style.setAppearance(MenulistButtonPart);
            part = MenulistButtonPart;
        } else
            style.setAppearance(NoControlPart);
    }

    if (!style.hasAppearance())
        return;

    // Never support box-shadow on native controls.
    style.setBoxShadow(nullptr);
    
#if USE(NEW_THEME)
    switch (part) {
    case CheckboxPart:
    case InnerSpinButtonPart:
    case RadioPart:
    case PushButtonPart:
    case SquareButtonPart:
    case DefaultButtonPart:
    case ButtonPart: {
        // Border
        LengthBox borderBox(style.borderTopWidth(), style.borderRightWidth(), style.borderBottomWidth(), style.borderLeftWidth());
        borderBox = m_theme->controlBorder(part, style.fontCascade(), borderBox, style.effectiveZoom());
        if (borderBox.top().value() != static_cast<int>(style.borderTopWidth())) {
            if (borderBox.top().value())
                style.setBorderTopWidth(borderBox.top().value());
            else
                style.resetBorderTop();
        }
        if (borderBox.right().value() != static_cast<int>(style.borderRightWidth())) {
            if (borderBox.right().value())
                style.setBorderRightWidth(borderBox.right().value());
            else
                style.resetBorderRight();
        }
        if (borderBox.bottom().value() != static_cast<int>(style.borderBottomWidth())) {
            style.setBorderBottomWidth(borderBox.bottom().value());
            if (borderBox.bottom().value())
                style.setBorderBottomWidth(borderBox.bottom().value());
            else
                style.resetBorderBottom();
        }
        if (borderBox.left().value() != static_cast<int>(style.borderLeftWidth())) {
            style.setBorderLeftWidth(borderBox.left().value());
            if (borderBox.left().value())
                style.setBorderLeftWidth(borderBox.left().value());
            else
                style.resetBorderLeft();
        }

        // Padding
        LengthBox paddingBox = m_theme->controlPadding(part, style.fontCascade(), style.paddingBox(), style.effectiveZoom());
        if (paddingBox != style.paddingBox())
            style.setPaddingBox(paddingBox);

        // Whitespace
        if (m_theme->controlRequiresPreWhiteSpace(part))
            style.setWhiteSpace(PRE);
            
        // Width / Height
        // The width and height here are affected by the zoom.
        // FIXME: Check is flawed, since it doesn't take min-width/max-width into account.
        LengthSize controlSize = m_theme->controlSize(part, style.fontCascade(), LengthSize(style.width(), style.height()), style.effectiveZoom());
        if (controlSize.width() != style.width())
            style.setWidth(controlSize.width());
        if (controlSize.height() != style.height())
            style.setHeight(controlSize.height());
                
        // Min-Width / Min-Height
        LengthSize minControlSize = m_theme->minimumControlSize(part, style.fontCascade(), style.effectiveZoom());
        if (minControlSize.width() != style.minWidth())
            style.setMinWidth(minControlSize.width());
        if (minControlSize.height() != style.minHeight())
            style.setMinHeight(minControlSize.height());
                
        // Font
        if (auto themeFont = m_theme->controlFont(part, style.fontCascade(), style.effectiveZoom())) {
            // If overriding the specified font with the theme font, also override the line height with the standard line height.
            style.setLineHeight(RenderStyle::initialLineHeight());
            if (style.setFontDescription(themeFont.value()))
                style.fontCascade().update(nullptr);
        }

        // Special style that tells enabled default buttons in active windows to use the ActiveButtonText color.
        // The active window part of the test has to be done at paint time since it's not triggered by a style change.
//.........这里部分代码省略.........

bool CSSPropertyEquality::propertiesEqual(CSSPropertyID prop, const RenderStyle& a, const RenderStyle& b)
{
    switch (prop) {
    case CSSPropertyBackgroundColor:
        return a.backgroundColor().resolve(a.color()) == b.backgroundColor().resolve(b.color())
            && a.visitedLinkBackgroundColor().resolve(a.color()) == b.visitedLinkBackgroundColor().resolve(b.color());
    case CSSPropertyBackgroundImage:
        return fillLayersEqual<CSSPropertyBackgroundImage>(a.backgroundLayers(), b.backgroundLayers());
    case CSSPropertyBackgroundPositionX:
        return fillLayersEqual<CSSPropertyBackgroundPositionX>(a.backgroundLayers(), b.backgroundLayers());
    case CSSPropertyBackgroundPositionY:
        return fillLayersEqual<CSSPropertyBackgroundPositionY>(a.backgroundLayers(), b.backgroundLayers());
    case CSSPropertyBackgroundSize:
        return fillLayersEqual<CSSPropertyBackgroundSize>(a.backgroundLayers(), b.backgroundLayers());
    case CSSPropertyBaselineShift:
        return dataEquivalent(a.baselineShiftValue(), b.baselineShiftValue());
    case CSSPropertyBorderBottomColor:
        return a.borderBottomColor().resolve(a.color()) == b.borderBottomColor().resolve(b.color())
            && a.visitedLinkBorderBottomColor().resolve(a.color()) == b.visitedLinkBorderBottomColor().resolve(b.color());
    case CSSPropertyBorderBottomLeftRadius:
        return a.borderBottomLeftRadius() == b.borderBottomLeftRadius();
    case CSSPropertyBorderBottomRightRadius:
        return a.borderBottomRightRadius() == b.borderBottomRightRadius();
    case CSSPropertyBorderBottomWidth:
        return a.borderBottomWidth() == b.borderBottomWidth();
    case CSSPropertyBorderImageOutset:
        return a.borderImageOutset() == b.borderImageOutset();
    case CSSPropertyBorderImageSlice:
        return a.borderImageSlices() == b.borderImageSlices();
    case CSSPropertyBorderImageSource:
        return dataEquivalent(a.borderImageSource(), b.borderImageSource());
    case CSSPropertyBorderImageWidth:
        return a.borderImageWidth() == b.borderImageWidth();
    case CSSPropertyBorderLeftColor:
        return a.borderLeftColor().resolve(a.color()) == b.borderLeftColor().resolve(b.color())
            && a.visitedLinkBorderLeftColor().resolve(a.color()) == b.visitedLinkBorderLeftColor().resolve(b.color());
    case CSSPropertyBorderLeftWidth:
        return a.borderLeftWidth() == b.borderLeftWidth();
    case CSSPropertyBorderRightColor:
        return a.borderRightColor().resolve(a.color()) == b.borderRightColor().resolve(b.color())
            && a.visitedLinkBorderRightColor().resolve(a.color()) == b.visitedLinkBorderRightColor().resolve(b.color());
    case CSSPropertyBorderRightWidth:
        return a.borderRightWidth() == b.borderRightWidth();
    case CSSPropertyBorderTopColor:
        return a.borderTopColor().resolve(a.color()) == b.borderTopColor().resolve(b.color())
            && a.visitedLinkBorderTopColor().resolve(a.color()) == b.visitedLinkBorderTopColor().resolve(b.color());
    case CSSPropertyBorderTopLeftRadius:
        return a.borderTopLeftRadius() == b.borderTopLeftRadius();
    case CSSPropertyBorderTopRightRadius:
        return a.borderTopRightRadius() == b.borderTopRightRadius();
    case CSSPropertyBorderTopWidth:
        return a.borderTopWidth() == b.borderTopWidth();
    case CSSPropertyBottom:
        return a.bottom() == b.bottom();
    case CSSPropertyBoxShadow:
        return dataEquivalent(a.boxShadow(), b.boxShadow());
    case CSSPropertyClip:
        return a.clip() == b.clip();
    case CSSPropertyColor:
        return a.color() == b.color() && a.visitedLinkColor() == b.visitedLinkColor();
    case CSSPropertyFill:
        return a.fillPaintType() == b.fillPaintType()
            && (a.fillPaintType() != SVGPaint::SVG_PAINTTYPE_RGBCOLOR || a.fillPaintColor() == b.fillPaintColor());
    case CSSPropertyFillOpacity:
        return a.fillOpacity() == b.fillOpacity();
    case CSSPropertyFlexBasis:
        return a.flexBasis() == b.flexBasis();
    case CSSPropertyFlexGrow:
        return a.flexGrow() == b.flexGrow();
    case CSSPropertyFlexShrink:
        return a.flexShrink() == b.flexShrink();
    case CSSPropertyFloodColor:
        return a.floodColor() == b.floodColor();
    case CSSPropertyFloodOpacity:
        return a.floodOpacity() == b.floodOpacity();
    case CSSPropertyFontSize:
        // CSSPropertyFontSize: Must pass a specified size to setFontSize if Text Autosizing is enabled, but a computed size
        // if text zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
        // FIXME: Should we introduce an option to pass the computed font size here, allowing consumers to
        // enable text zoom rather than Text Autosizing? See http://crbug.com/227545.
        return a.specifiedFontSize() == b.specifiedFontSize();
    case CSSPropertyFontWeight:
        return a.fontWeight() == b.fontWeight();
    case CSSPropertyHeight:
        return a.height() == b.height();
    case CSSPropertyLeft:
        return a.left() == b.left();
    case CSSPropertyLetterSpacing:
        return a.letterSpacing() == b.letterSpacing();
    case CSSPropertyLightingColor:
        return a.lightingColor() == b.lightingColor();
    case CSSPropertyLineHeight:
        return a.specifiedLineHeight() == b.specifiedLineHeight();
    case CSSPropertyListStyleImage:
        return dataEquivalent(a.listStyleImage(), b.listStyleImage());
    case CSSPropertyMarginBottom:
        return a.marginBottom() == b.marginBottom();
    case CSSPropertyMarginLeft:
        return a.marginLeft() == b.marginLeft();
    case CSSPropertyMarginRight:
//.........这里部分代码省略.........

// FIXME: Generate this function.
PassRefPtr<AnimatableValue> CSSAnimatableValueFactory::create(CSSPropertyID property, const RenderStyle& style)
{
    ASSERT(CSSPropertyMetadata::isAnimatableProperty(property));
    switch (property) {
    case CSSPropertyBackgroundColor:
        return createFromColor(property, style);
    case CSSPropertyBackgroundImage:
        return createFromFillLayers<CSSPropertyBackgroundImage>(style.backgroundLayers(), style);
    case CSSPropertyBackgroundPositionX:
        return createFromFillLayers<CSSPropertyBackgroundPositionX>(style.backgroundLayers(), style);
    case CSSPropertyBackgroundPositionY:
        return createFromFillLayers<CSSPropertyBackgroundPositionY>(style.backgroundLayers(), style);
    case CSSPropertyBackgroundSize:
    case CSSPropertyWebkitBackgroundSize:
        return createFromFillLayers<CSSPropertyBackgroundSize>(style.backgroundLayers(), style);
    case CSSPropertyBorderBottomColor:
        return createFromColor(property, style);
    case CSSPropertyBorderBottomLeftRadius:
        return createFromLengthSize(style.borderBottomLeftRadius(), style);
    case CSSPropertyBorderBottomRightRadius:
        return createFromLengthSize(style.borderBottomRightRadius(), style);
    case CSSPropertyBorderBottomWidth:
        return createFromDouble(style.borderBottomWidth());
    case CSSPropertyBorderImageOutset:
        return createFromBorderImageLengthBox(style.borderImageOutset(), style);
    case CSSPropertyBorderImageSlice:
        return createFromLengthBox(style.borderImageSlices(), style);
    case CSSPropertyBorderImageSource:
        return createFromStyleImage(style.borderImageSource());
    case CSSPropertyBorderImageWidth:
        return createFromBorderImageLengthBox(style.borderImageWidth(), style);
    case CSSPropertyBorderLeftColor:
        return createFromColor(property, style);
    case CSSPropertyBorderLeftWidth:
        return createFromDouble(style.borderLeftWidth());
    case CSSPropertyBorderRightColor:
        return createFromColor(property, style);
    case CSSPropertyBorderRightWidth:
        return createFromDouble(style.borderRightWidth());
    case CSSPropertyBorderTopColor:
        return createFromColor(property, style);
    case CSSPropertyBorderTopLeftRadius:
        return createFromLengthSize(style.borderTopLeftRadius(), style);
    case CSSPropertyBorderTopRightRadius:
        return createFromLengthSize(style.borderTopRightRadius(), style);
    case CSSPropertyBorderTopWidth:
        return createFromDouble(style.borderTopWidth());
    case CSSPropertyBottom:
        return createFromLength(style.bottom(), style);
    case CSSPropertyBoxShadow:
    case CSSPropertyWebkitBoxShadow:
        return AnimatableShadow::create(style.boxShadow());
    case CSSPropertyClip:
        if (style.hasAutoClip())
            return AnimatableUnknown::create(CSSPrimitiveValue::create(CSSValueAuto));
        return createFromLengthBox(style.clip(), style);
    case CSSPropertyColor:
        return createFromColor(property, style);
    case CSSPropertyFilter:
        return AnimatableFilterOperations::create(style.filter());
    case CSSPropertyFlexGrow:
        return createFromDouble(style.flexGrow(), AnimatableDouble::InterpolationIsNonContinuousWithZero);
    case CSSPropertyFlexShrink:
        return createFromDouble(style.flexShrink(), AnimatableDouble::InterpolationIsNonContinuousWithZero);
    case CSSPropertyFlexBasis:
        return createFromLength(style.flexBasis(), style);
    case CSSPropertyFontSize:
        // Must pass a specified size to setFontSize if Text Autosizing is enabled, but a computed size
        // if text zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
        // FIXME: Should we introduce an option to pass the computed font size here, allowing consumers to
        // enable text zoom rather than Text Autosizing? See http://crbug.com/227545.
        return createFromDouble(style.specifiedFontSize());
    case CSSPropertyFontStretch:
        return createFromFontStretch(style.fontStretch());
    case CSSPropertyFontWeight:
        return createFromFontWeight(style.fontWeight());
    case CSSPropertyHeight:
        return createFromLength(style.height(), style);
    case CSSPropertyLeft:
        return createFromLength(style.left(), style);
    case CSSPropertyLetterSpacing:
        return createFromDouble(style.letterSpacing());
    case CSSPropertyLineHeight:
        return createFromLineHeight(style.specifiedLineHeight(), style);
    case CSSPropertyMarginBottom:
        return createFromLength(style.marginBottom(), style);
    case CSSPropertyMarginLeft:
        return createFromLength(style.marginLeft(), style);
    case CSSPropertyMarginRight:
        return createFromLength(style.marginRight(), style);
    case CSSPropertyMarginTop:
        return createFromLength(style.marginTop(), style);
    case CSSPropertyMaxHeight:
        return createFromLength(style.maxHeight(), style);
    case CSSPropertyMaxWidth:
        return createFromLength(style.maxWidth(), style);
    case CSSPropertyMinHeight:
        return createFromLength(style.minHeight(), style);
    case CSSPropertyMinWidth:
//.........这里部分代码省略.........

// FIXME: Generate this function.
PassRefPtr<AnimatableValue> CSSAnimatableValueFactory::create(CSSPropertyID property, const RenderStyle& style)
{
    switch (property) {
    case CSSPropertyBackgroundColor:
        return createFromColor(property, style);
    case CSSPropertyBackgroundImage:
        return createFromFillLayers<CSSPropertyBackgroundImage>(style.backgroundLayers(), style);
    case CSSPropertyBackgroundPositionX:
        return createFromFillLayers<CSSPropertyBackgroundPositionX>(style.backgroundLayers(), style);
    case CSSPropertyBackgroundPositionY:
        return createFromFillLayers<CSSPropertyBackgroundPositionY>(style.backgroundLayers(), style);
    case CSSPropertyBackgroundSize:
    case CSSPropertyWebkitBackgroundSize:
        return createFromFillLayers<CSSPropertyBackgroundSize>(style.backgroundLayers(), style);
    case CSSPropertyBaselineShift:
        return AnimatableSVGLength::create(style.baselineShiftValue());
    case CSSPropertyBorderBottomColor:
        return createFromColor(property, style);
    case CSSPropertyBorderBottomLeftRadius:
        return createFromLengthSize(style.borderBottomLeftRadius(), style);
    case CSSPropertyBorderBottomRightRadius:
        return createFromLengthSize(style.borderBottomRightRadius(), style);
    case CSSPropertyBorderBottomWidth:
        return createFromDouble(style.borderBottomWidth());
    case CSSPropertyBorderImageOutset:
        return createFromBorderImageLengthBox(style.borderImageOutset(), style);
    case CSSPropertyBorderImageSlice:
        return createFromLengthBox(style.borderImageSlices(), style);
    case CSSPropertyBorderImageSource:
        return createFromStyleImage(style.borderImageSource());
    case CSSPropertyBorderImageWidth:
        return createFromBorderImageLengthBox(style.borderImageWidth(), style);
    case CSSPropertyBorderLeftColor:
        return createFromColor(property, style);
    case CSSPropertyBorderLeftWidth:
        return createFromDouble(style.borderLeftWidth());
    case CSSPropertyBorderRightColor:
        return createFromColor(property, style);
    case CSSPropertyBorderRightWidth:
        return createFromDouble(style.borderRightWidth());
    case CSSPropertyBorderTopColor:
        return createFromColor(property, style);
    case CSSPropertyBorderTopLeftRadius:
        return createFromLengthSize(style.borderTopLeftRadius(), style);
    case CSSPropertyBorderTopRightRadius:
        return createFromLengthSize(style.borderTopRightRadius(), style);
    case CSSPropertyBorderTopWidth:
        return createFromDouble(style.borderTopWidth());
    case CSSPropertyBottom:
        return createFromLength(style.bottom(), style);
    case CSSPropertyBoxShadow:
    case CSSPropertyWebkitBoxShadow:
        return AnimatableShadow::create(style.boxShadow());
    case CSSPropertyClip:
        if (style.hasClip())
            return createFromLengthBox(style.clip(), style);
        return AnimatableUnknown::create(CSSPrimitiveValue::create(CSSValueAuto));
    case CSSPropertyColor:
        return createFromColor(property, style);
    case CSSPropertyFillOpacity:
        return createFromDouble(style.fillOpacity());
    case CSSPropertyFill:
        return AnimatableSVGPaint::create(style.svgStyle()->fillPaintType(), style.svgStyle()->fillPaintColor(), style.svgStyle()->fillPaintUri());
    case CSSPropertyFlexGrow:
        return createFromDouble(style.flexGrow(), AnimatableDouble::InterpolationIsNonContinuousWithZero);
    case CSSPropertyFlexShrink:
        return createFromDouble(style.flexShrink(), AnimatableDouble::InterpolationIsNonContinuousWithZero);
    case CSSPropertyFlexBasis:
        return createFromLength(style.flexBasis(), style);
    case CSSPropertyFloodColor:
        return createFromColor(property, style);
    case CSSPropertyFloodOpacity:
        return createFromDouble(style.floodOpacity());
    case CSSPropertyFontSize:
        // Must pass a specified size to setFontSize if Text Autosizing is enabled, but a computed size
        // if text zoom is enabled (if neither is enabled it's irrelevant as they're probably the same).
        // FIXME: Should we introduce an option to pass the computed font size here, allowing consumers to
        // enable text zoom rather than Text Autosizing? See http://crbug.com/227545.
        return createFromDouble(style.specifiedFontSize());
    case CSSPropertyHeight:
        return createFromLength(style.height(), style);
    case CSSPropertyKerning:
        return AnimatableSVGLength::create(style.kerning());
    case CSSPropertyLightingColor:
        return createFromColor(property, style);
    case CSSPropertyListStyleImage:
        return createFromStyleImage(style.listStyleImage());
    case CSSPropertyLeft:
        return createFromLength(style.left(), style);
    case CSSPropertyLetterSpacing:
        return createFromDouble(style.letterSpacing());
    case CSSPropertyLineHeight:
        return createFromLineHeight(style.specifiedLineHeight(), style);
    case CSSPropertyMarginBottom:
        return createFromLength(style.marginBottom(), style);
    case CSSPropertyMarginLeft:
        return createFromLength(style.marginLeft(), style);
    case CSSPropertyMarginRight:
        return createFromLength(style.marginRight(), style);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        if (style->borderCollapse())
            return new CSSPrimitiveValueImpl(CSS_VAL_COLLAPSE);
        else
            return new CSSPrimitiveValueImpl(CSS_VAL_SEPARATE);
    case CSS_PROP_BORDER_SPACING:
    {
        QString string(numberAsString(style->horizontalBorderSpacing()) + 
            "px " + 
            numberAsString(style->verticalBorderSpacing()) +
            "px");
        return new CSSPrimitiveValueImpl(string, CSSPrimitiveValue::CSS_STRING);
    }
    case CSS_PROP__KHTML_BORDER_HORIZONTAL_SPACING:
        return new CSSPrimitiveValueImpl(style->horizontalBorderSpacing(), CSSPrimitiveValue::CSS_PX);
    case CSS_PROP__KHTML_BORDER_VERTICAL_SPACING:
        return new CSSPrimitiveValueImpl(style->verticalBorderSpacing(), CSSPrimitiveValue::CSS_PX);
    case CSS_PROP_BORDER_TOP_COLOR:
        return new CSSPrimitiveValueImpl(style->borderLeftColor().rgb());
    case CSS_PROP_BORDER_RIGHT_COLOR:
        return new CSSPrimitiveValueImpl(style->borderRightColor().rgb());
    case CSS_PROP_BORDER_BOTTOM_COLOR:
        return new CSSPrimitiveValueImpl(style->borderBottomColor().rgb());
    case CSS_PROP_BORDER_LEFT_COLOR:
        return new CSSPrimitiveValueImpl(style->borderLeftColor().rgb());
    case CSS_PROP_BORDER_TOP_STYLE:
        return valueForBorderStyle(style->borderTopStyle());
    case CSS_PROP_BORDER_RIGHT_STYLE:
        return valueForBorderStyle(style->borderRightStyle());
    case CSS_PROP_BORDER_BOTTOM_STYLE:
        return valueForBorderStyle(style->borderBottomStyle());
    case CSS_PROP_BORDER_LEFT_STYLE:
        return valueForBorderStyle(style->borderLeftStyle());
    case CSS_PROP_BORDER_TOP_WIDTH:
        return new CSSPrimitiveValueImpl(style->borderTopWidth(), CSSPrimitiveValue::CSS_PX);
    case CSS_PROP_BORDER_RIGHT_WIDTH:
        return new CSSPrimitiveValueImpl(style->borderRightWidth(), CSSPrimitiveValue::CSS_PX);
    case CSS_PROP_BORDER_BOTTOM_WIDTH:
        return new CSSPrimitiveValueImpl(style->borderBottomWidth(), CSSPrimitiveValue::CSS_PX);
    case CSS_PROP_BORDER_LEFT_WIDTH:
        return new CSSPrimitiveValueImpl(style->borderLeftWidth(), CSSPrimitiveValue::CSS_PX);
    case CSS_PROP_BOTTOM:
        return getPositionOffsetValue(renderer, CSS_PROP_BOTTOM);
    case CSS_PROP__KHTML_BOX_ALIGN:
        switch (style->boxAlign()) {
            case khtml::BSTRETCH:
                return new CSSPrimitiveValueImpl(CSS_VAL_STRETCH);
            case khtml::BSTART:
                return new CSSPrimitiveValueImpl(CSS_VAL_START);
            case khtml::BCENTER:
                return new CSSPrimitiveValueImpl(CSS_VAL_CENTER);
            case khtml::BEND:
                return new CSSPrimitiveValueImpl(CSS_VAL_END);
            case khtml::BBASELINE:
                return new CSSPrimitiveValueImpl(CSS_VAL_BASELINE);
            case khtml::BJUSTIFY:
                break; // not allowed
        }
        ASSERT_NOT_REACHED();
        return 0;
    case CSS_PROP__KHTML_BOX_DIRECTION:
        switch (style->boxDirection()) {
            case khtml::BNORMAL:
                return new CSSPrimitiveValueImpl(CSS_VAL_NORMAL);
            case khtml::BREVERSE:
                return new CSSPrimitiveValueImpl(CSS_VAL_REVERSE);
        }

bool RenderStyle::diffNeedsFullLayout(const RenderStyle& other) const
{
    // FIXME: Not all cases in this method need both full layout and paint invalidation.
    // Should move cases into diffNeedsFullLayout() if
    // - don't need paint invalidation at all;
    // - or the renderer knows how to exactly invalidate paints caused by the layout change
    //   instead of forced full paint invalidation.

    if (surround.get() != other.surround.get()) {
        // If our border widths change, then we need to layout. Other changes to borders only necessitate a paint invalidation.
        if (borderLeftWidth() != other.borderLeftWidth()
            || borderTopWidth() != other.borderTopWidth()
            || borderBottomWidth() != other.borderBottomWidth()
            || borderRightWidth() != other.borderRightWidth())
            return true;
    }

    if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
        if (rareNonInheritedData->textOverflow != other.rareNonInheritedData->textOverflow
            || rareNonInheritedData->m_wrapFlow != other.rareNonInheritedData->m_wrapFlow
            || rareNonInheritedData->m_wrapThrough != other.rareNonInheritedData->m_wrapThrough
            || rareNonInheritedData->m_order != other.rareNonInheritedData->m_order
            || rareNonInheritedData->m_alignContent != other.rareNonInheritedData->m_alignContent
            || rareNonInheritedData->m_alignItems != other.rareNonInheritedData->m_alignItems
            || rareNonInheritedData->m_alignSelf != other.rareNonInheritedData->m_alignSelf
            || rareNonInheritedData->m_justifyContent != other.rareNonInheritedData->m_justifyContent)
            return true;

        if (rareNonInheritedData->m_flexibleBox.get() != other.rareNonInheritedData->m_flexibleBox.get()
            && *rareNonInheritedData->m_flexibleBox.get() != *other.rareNonInheritedData->m_flexibleBox.get())
            return true;

        // FIXME: We should add an optimized form of layout that just recomputes visual overflow.
        if (!rareNonInheritedData->shadowDataEquivalent(*other.rareNonInheritedData.get()))
            return true;

        // If the counter directives change, trigger a relayout to re-calculate counter values and rebuild the counter node tree.
        const CounterDirectiveMap* mapA = rareNonInheritedData->m_counterDirectives.get();
        const CounterDirectiveMap* mapB = other.rareNonInheritedData->m_counterDirectives.get();
        if (!(mapA == mapB || (mapA && mapB && *mapA == *mapB)))
            return true;

        // We only need do layout for opacity changes if adding or losing opacity could trigger a change
        // in us being a stacking context.
        if (hasAutoZIndex() != other.hasAutoZIndex() && rareNonInheritedData->hasOpacity() != other.rareNonInheritedData->hasOpacity()) {
            // FIXME: We would like to use SimplifiedLayout here, but we can't quite do that yet.
            // We need to make sure SimplifiedLayout can operate correctly on RenderInlines (we will need
            // to add a selfNeedsSimplifiedLayout bit in order to not get confused and taint every line).
            // In addition we need to solve the floating object issue when layers come and go. Right now
            // a full layout is necessary to keep floating object lists sane.
            return true;
        }
    }

    if (rareInheritedData.get() != other.rareInheritedData.get()) {
        if (rareInheritedData->highlight != other.rareInheritedData->highlight
            || rareInheritedData->indent != other.rareInheritedData->indent
            || rareInheritedData->m_textAlignLast != other.rareInheritedData->m_textAlignLast
            || rareInheritedData->m_textIndentLine != other.rareInheritedData->m_textIndentLine
            || rareInheritedData->wordBreak != other.rareInheritedData->wordBreak
            || rareInheritedData->overflowWrap != other.rareInheritedData->overflowWrap
            || rareInheritedData->lineBreak != other.rareInheritedData->lineBreak
            || rareInheritedData->hyphens != other.rareInheritedData->hyphens
            || rareInheritedData->hyphenationLimitBefore != other.rareInheritedData->hyphenationLimitBefore
            || rareInheritedData->hyphenationLimitAfter != other.rareInheritedData->hyphenationLimitAfter
            || rareInheritedData->hyphenationString != other.rareInheritedData->hyphenationString
            || rareInheritedData->locale != other.rareInheritedData->locale
            || rareInheritedData->textEmphasisMark != other.rareInheritedData->textEmphasisMark
            || rareInheritedData->textEmphasisPosition != other.rareInheritedData->textEmphasisPosition
            || rareInheritedData->textEmphasisCustomMark != other.rareInheritedData->textEmphasisCustomMark
            || rareInheritedData->m_textJustify != other.rareInheritedData->m_textJustify
            || rareInheritedData->m_textOrientation != other.rareInheritedData->m_textOrientation
            || rareInheritedData->m_tabSize != other.rareInheritedData->m_tabSize
            || rareInheritedData->m_lineBoxContain != other.rareInheritedData->m_lineBoxContain
            || rareInheritedData->textStrokeWidth != other.rareInheritedData->textStrokeWidth)
            return true;

        if (!rareInheritedData->shadowDataEquivalent(*other.rareInheritedData.get()))
            return true;
    }

    if (inherited.get() != other.inherited.get()) {
        if (inherited->line_height != other.inherited->line_height
            || inherited->font != other.inherited->font
            || inherited->horizontal_border_spacing != other.inherited->horizontal_border_spacing
            || inherited->vertical_border_spacing != other.inherited->vertical_border_spacing)
            return true;
    }

    if (inherited_flags.m_rtlOrdering != other.inherited_flags.m_rtlOrdering
        || inherited_flags._text_align != other.inherited_flags._text_align
        || inherited_flags._direction != other.inherited_flags._direction
        || inherited_flags._white_space != other.inherited_flags._white_space)
        return true;

    if (noninherited_flags.overflowX != other.noninherited_flags.overflowX
        || noninherited_flags.overflowY != other.noninherited_flags.overflowY
        || noninherited_flags.unicodeBidi != other.noninherited_flags.unicodeBidi
        || noninherited_flags.position != other.noninherited_flags.position
        || noninherited_flags.originalDisplay != other.noninherited_flags.originalDisplay)
//.........这里部分代码省略.........