C++ RenderStyle::columnRuleWidth方法代码示例

void RenderMultiColumnSet::paintColumnRules(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
    if (paintInfo.context->paintingDisabled())
        return;

    RenderStyle* blockStyle = toRenderMultiColumnBlock(parent())->style();
    const Color& ruleColor = blockStyle->visitedDependentColor(CSSPropertyWebkitColumnRuleColor);
    bool ruleTransparent = blockStyle->columnRuleIsTransparent();
    EBorderStyle ruleStyle = blockStyle->columnRuleStyle();
    LayoutUnit ruleThickness = blockStyle->columnRuleWidth();
    LayoutUnit colGap = columnGap();
    bool renderRule = ruleStyle > BHIDDEN && !ruleTransparent && ruleThickness <= colGap;
    if (!renderRule)
        return;

    unsigned colCount = columnCount();
    if (colCount <= 1)
        return;

    bool antialias = shouldAntialiasLines(paintInfo.context);

    bool leftToRight = style()->isLeftToRightDirection();
    LayoutUnit currLogicalLeftOffset = leftToRight ? ZERO_LAYOUT_UNIT : contentLogicalWidth();
    LayoutUnit ruleAdd = borderAndPaddingLogicalLeft();
    LayoutUnit ruleLogicalLeft = leftToRight ? ZERO_LAYOUT_UNIT : contentLogicalWidth();
    LayoutUnit inlineDirectionSize = computedColumnWidth();
    BoxSide boxSide = isHorizontalWritingMode()
        ? leftToRight ? BSLeft : BSRight
        : leftToRight ? BSTop : BSBottom;

    for (unsigned i = 0; i < colCount; i++) {
        // Move to the next position.
        if (leftToRight) {
            ruleLogicalLeft += inlineDirectionSize + colGap / 2;
            currLogicalLeftOffset += inlineDirectionSize + colGap;
        } else {
            ruleLogicalLeft -= (inlineDirectionSize + colGap / 2);
            currLogicalLeftOffset -= (inlineDirectionSize + colGap);
        }
       
        // Now paint the column rule.
        if (i < colCount - 1) {
            LayoutUnit ruleLeft = isHorizontalWritingMode() ? paintOffset.x() + ruleLogicalLeft - ruleThickness / 2 + ruleAdd : paintOffset.x() + borderLeft() + paddingLeft();
            LayoutUnit ruleRight = isHorizontalWritingMode() ? ruleLeft + ruleThickness : ruleLeft + contentWidth();
            LayoutUnit ruleTop = isHorizontalWritingMode() ? paintOffset.y() + borderTop() + paddingTop() : paintOffset.y() + ruleLogicalLeft - ruleThickness / 2 + ruleAdd;
            LayoutUnit ruleBottom = isHorizontalWritingMode() ? ruleTop + contentHeight() : ruleTop + ruleThickness;
            IntRect pixelSnappedRuleRect = pixelSnappedIntRectFromEdges(ruleLeft, ruleTop, ruleRight, ruleBottom);
            drawLineForBoxSide(paintInfo.context, pixelSnappedRuleRect.x(), pixelSnappedRuleRect.y(), pixelSnappedRuleRect.maxX(), pixelSnappedRuleRect.maxY(), boxSide, ruleColor, ruleStyle, 0, 0, antialias);
        }
        
        ruleLogicalLeft = currLogicalLeftOffset;
    }
}

void MultiColumnSetPainter::paintColumnRules(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
    if (m_renderMultiColumnSet.flowThread()->isRenderPagedFlowThread())
        return;

    RenderStyle* blockStyle = m_renderMultiColumnSet.multiColumnBlockFlow()->style();
    const Color& ruleColor = m_renderMultiColumnSet.resolveColor(blockStyle, CSSPropertyWebkitColumnRuleColor);
    bool ruleTransparent = blockStyle->columnRuleIsTransparent();
    EBorderStyle ruleStyle = blockStyle->columnRuleStyle();
    LayoutUnit ruleThickness = blockStyle->columnRuleWidth();
    LayoutUnit colGap = m_renderMultiColumnSet.columnGap();
    bool renderRule = ruleStyle > BHIDDEN && !ruleTransparent;
    if (!renderRule)
        return;

    unsigned colCount = m_renderMultiColumnSet.actualColumnCount();
    if (colCount <= 1)
        return;

    bool antialias = BoxPainter::shouldAntialiasLines(paintInfo.context);

    bool leftToRight = m_renderMultiColumnSet.style()->isLeftToRightDirection();
    LayoutUnit currLogicalLeftOffset = leftToRight ? LayoutUnit() : m_renderMultiColumnSet.contentLogicalWidth();
    LayoutUnit ruleAdd = m_renderMultiColumnSet.borderAndPaddingLogicalLeft();
    LayoutUnit ruleLogicalLeft = leftToRight ? LayoutUnit() : m_renderMultiColumnSet.contentLogicalWidth();
    LayoutUnit inlineDirectionSize = m_renderMultiColumnSet.pageLogicalWidth();
    BoxSide boxSide = m_renderMultiColumnSet.isHorizontalWritingMode()
        ? leftToRight ? BSLeft : BSRight
        : leftToRight ? BSTop : BSBottom;

    for (unsigned i = 0; i < colCount; i++) {
        // Move to the next position.
        if (leftToRight) {
            ruleLogicalLeft += inlineDirectionSize + colGap / 2;
            currLogicalLeftOffset += inlineDirectionSize + colGap;
        } else {
            ruleLogicalLeft -= (inlineDirectionSize + colGap / 2);
            currLogicalLeftOffset -= (inlineDirectionSize + colGap);
        }

        // Now paint the column rule.
        if (i < colCount - 1) {
            LayoutUnit ruleLeft = m_renderMultiColumnSet.isHorizontalWritingMode() ? paintOffset.x() + ruleLogicalLeft - ruleThickness / 2 + ruleAdd : paintOffset.x() + m_renderMultiColumnSet.borderLeft() + m_renderMultiColumnSet.paddingLeft();
            LayoutUnit ruleRight = m_renderMultiColumnSet.isHorizontalWritingMode() ? ruleLeft + ruleThickness : ruleLeft + m_renderMultiColumnSet.contentWidth();
            LayoutUnit ruleTop = m_renderMultiColumnSet.isHorizontalWritingMode() ? paintOffset.y() + m_renderMultiColumnSet.borderTop() + m_renderMultiColumnSet.paddingTop() : paintOffset.y() + ruleLogicalLeft - ruleThickness / 2 + ruleAdd;
            LayoutUnit ruleBottom = m_renderMultiColumnSet.isHorizontalWritingMode() ? ruleTop + m_renderMultiColumnSet.contentHeight() : ruleTop + ruleThickness;
            IntRect pixelSnappedRuleRect = pixelSnappedIntRectFromEdges(ruleLeft, ruleTop, ruleRight, ruleBottom);
            ObjectPainter::drawLineForBoxSide(paintInfo.context, pixelSnappedRuleRect.x(), pixelSnappedRuleRect.y(), pixelSnappedRuleRect.maxX(), pixelSnappedRuleRect.maxY(), boxSide, ruleColor, ruleStyle, 0, 0, antialias);
        }

        ruleLogicalLeft = currLogicalLeftOffset;
    }
}

//.........这里部分代码省略.........
        return a.stopOpacity() == b.stopOpacity();
    case CSSPropertyStroke:
        return a.strokePaintType() == b.strokePaintType()
            && (a.strokePaintType() != SVGPaint::SVG_PAINTTYPE_RGBCOLOR || a.strokePaintColor() == b.strokePaintColor());
    case CSSPropertyStrokeDasharray:
        return dataEquivalent(a.strokeDashArray(), b.strokeDashArray());
    case CSSPropertyStrokeDashoffset:
        return dataEquivalent(a.strokeDashOffset(), b.strokeDashOffset());
    case CSSPropertyStrokeMiterlimit:
        return a.strokeMiterLimit() == b.strokeMiterLimit();
    case CSSPropertyStrokeOpacity:
        return a.strokeOpacity() == b.strokeOpacity();
    case CSSPropertyStrokeWidth:
        return dataEquivalent(a.strokeWidth(), b.strokeWidth());
    case CSSPropertyTextDecorationColor:
        return a.textDecorationColor().resolve(a.color()) == b.textDecorationColor().resolve(b.color())
            && a.visitedLinkTextDecorationColor().resolve(a.color()) == b.visitedLinkTextDecorationColor().resolve(b.color());
    case CSSPropertyTextIndent:
        return a.textIndent() == b.textIndent();
    case CSSPropertyTextShadow:
        return dataEquivalent(a.textShadow(), b.textShadow());
    case CSSPropertyTop:
        return a.top() == b.top();
    case CSSPropertyVisibility:
        return a.visibility() == b.visibility();
    case CSSPropertyWebkitBackgroundSize:
        return fillLayersEqual<CSSPropertyWebkitBackgroundSize>(a.backgroundLayers(), b.backgroundLayers());
    case CSSPropertyWebkitBorderHorizontalSpacing:
        return a.horizontalBorderSpacing() == b.horizontalBorderSpacing();
    case CSSPropertyWebkitBorderVerticalSpacing:
        return a.verticalBorderSpacing() == b.verticalBorderSpacing();
    case CSSPropertyWebkitBoxShadow:
        return dataEquivalent(a.boxShadow(), b.boxShadow());
    case CSSPropertyWebkitClipPath:
        return dataEquivalent(a.clipPath(), b.clipPath());
    case CSSPropertyWebkitColumnCount:
        return a.columnCount() == b.columnCount();
    case CSSPropertyWebkitColumnGap:
        return a.columnGap() == b.columnGap();
    case CSSPropertyWebkitColumnRuleColor:
        return a.columnRuleColor().resolve(a.color()) == b.columnRuleColor().resolve(b.color())
            && a.visitedLinkColumnRuleColor().resolve(a.color()) == b.visitedLinkColumnRuleColor().resolve(b.color());
    case CSSPropertyWebkitColumnRuleWidth:
        return a.columnRuleWidth() == b.columnRuleWidth();
    case CSSPropertyWebkitColumnWidth:
        return a.columnWidth() == b.columnWidth();
    case CSSPropertyWebkitFilter:
        return a.filter() == b.filter();
    case CSSPropertyWebkitMaskBoxImageOutset:
        return a.maskBoxImageOutset() == b.maskBoxImageOutset();
    case CSSPropertyWebkitMaskBoxImageSlice:
        return a.maskBoxImageSlices() == b.maskBoxImageSlices();
    case CSSPropertyWebkitMaskBoxImageSource:
        return dataEquivalent(a.maskBoxImageSource(), b.maskBoxImageSource());
    case CSSPropertyWebkitMaskBoxImageWidth:
        return a.maskBoxImageWidth() == b.maskBoxImageWidth();
    case CSSPropertyWebkitMaskImage:
        return dataEquivalent(a.maskImage(), b.maskImage());
    case CSSPropertyWebkitMaskPositionX:
        return fillLayersEqual<CSSPropertyWebkitMaskPositionX>(a.maskLayers(), b.maskLayers());
    case CSSPropertyWebkitMaskPositionY:
        return fillLayersEqual<CSSPropertyWebkitMaskPositionY>(a.maskLayers(), b.maskLayers());
    case CSSPropertyWebkitMaskSize:
        return fillLayersEqual<CSSPropertyWebkitMaskSize>(a.maskLayers(), b.maskLayers());
    case CSSPropertyPerspective:
        return a.perspective() == b.perspective();
    case CSSPropertyPerspectiveOrigin:
        return a.perspectiveOriginX() == b.perspectiveOriginX() && a.perspectiveOriginY() == b.perspectiveOriginY();
    case CSSPropertyWebkitPerspectiveOriginX:
        return a.perspectiveOriginX() == b.perspectiveOriginX();
    case CSSPropertyWebkitPerspectiveOriginY:
        return a.perspectiveOriginY() == b.perspectiveOriginY();
    case CSSPropertyWebkitTextStrokeColor:
        return a.textStrokeColor().resolve(a.color()) == b.textStrokeColor().resolve(b.color())
            && a.visitedLinkTextStrokeColor().resolve(a.color()) == b.visitedLinkTextStrokeColor().resolve(b.color());
    case CSSPropertyTransform:
        return a.transform() == b.transform();
    case CSSPropertyTransformOrigin:
        return a.transformOriginX() == b.transformOriginX() && a.transformOriginY() == b.transformOriginY() && a.transformOriginZ() == b.transformOriginZ();
    case CSSPropertyWebkitTransformOriginX:
        return a.transformOriginX() == b.transformOriginX();
    case CSSPropertyWebkitTransformOriginY:
        return a.transformOriginY() == b.transformOriginY();
    case CSSPropertyWebkitTransformOriginZ:
        return a.transformOriginZ() == b.transformOriginZ();
    case CSSPropertyWidows:
        return a.widows() == b.widows();
    case CSSPropertyWidth:
        return a.width() == b.width();
    case CSSPropertyWordSpacing:
        return a.wordSpacing() == b.wordSpacing();
    case CSSPropertyZIndex:
        return a.zIndex() == b.zIndex();
    case CSSPropertyZoom:
        return a.zoom() == b.zoom();
    default:
        ASSERT_NOT_REACHED();
        return true;
    }
}

//.........这里部分代码省略.........
        return createFromLength(style.right(), style);
    case CSSPropertyStrokeWidth:
        return AnimatableSVGLength::create(style.strokeWidth());
    case CSSPropertyStopColor:
        return createFromColor(property, style);
    case CSSPropertyStopOpacity:
        return createFromDouble(style.stopOpacity());
    case CSSPropertyStrokeDasharray:
        return AnimatableStrokeDasharrayList::create(style.strokeDashArray());
    case CSSPropertyStrokeDashoffset:
        return AnimatableSVGLength::create(style.strokeDashOffset());
    case CSSPropertyStrokeMiterlimit:
        return createFromDouble(style.strokeMiterLimit());
    case CSSPropertyStrokeOpacity:
        return createFromDouble(style.strokeOpacity());
    case CSSPropertyStroke:
        return AnimatableSVGPaint::create(style.svgStyle()->strokePaintType(), style.svgStyle()->strokePaintColor(), style.svgStyle()->strokePaintUri());
    case CSSPropertyTextDecorationColor:
        return createFromColor(property, style);
    case CSSPropertyTextIndent:
        return createFromLength(style.textIndent(), style);
    case CSSPropertyTextShadow:
        return AnimatableShadow::create(style.textShadow());
    case CSSPropertyTop:
        return createFromLength(style.top(), style);
    case CSSPropertyWebkitBorderHorizontalSpacing:
        return createFromDouble(style.horizontalBorderSpacing());
    case CSSPropertyWebkitBorderVerticalSpacing:
        return createFromDouble(style.verticalBorderSpacing());
    case CSSPropertyWebkitClipPath:
        return AnimatableClipPathOperation::create(style.clipPath());
    case CSSPropertyWebkitColumnCount:
        return createFromDouble(style.columnCount());
    case CSSPropertyWebkitColumnGap:
        return createFromDouble(style.columnGap());
    case CSSPropertyWebkitColumnRuleColor:
        return createFromColor(property, style);
    case CSSPropertyWebkitColumnRuleWidth:
        return createFromDouble(style.columnRuleWidth());
    case CSSPropertyWebkitColumnWidth:
        return createFromDouble(style.columnWidth());
    case CSSPropertyWebkitFilter:
        return AnimatableFilterOperations::create(style.filter());
    case CSSPropertyWebkitMaskBoxImageOutset:
        return createFromBorderImageLengthBox(style.maskBoxImageOutset(), style);
    case CSSPropertyWebkitMaskBoxImageSlice:
        return createFromLengthBoxAndBool(style.maskBoxImageSlices(), style.maskBoxImageSlicesFill(), style);
    case CSSPropertyWebkitMaskBoxImageSource:
        return createFromStyleImage(style.maskBoxImageSource());
    case CSSPropertyWebkitMaskBoxImageWidth:
        return createFromBorderImageLengthBox(style.maskBoxImageWidth(), style);
    case CSSPropertyWebkitMaskImage:
        return createFromFillLayers<CSSPropertyWebkitMaskImage>(style.maskLayers(), style);
    case CSSPropertyWebkitMaskPositionX:
        return createFromFillLayers<CSSPropertyWebkitMaskPositionX>(style.maskLayers(), style);
    case CSSPropertyWebkitMaskPositionY:
        return createFromFillLayers<CSSPropertyWebkitMaskPositionY>(style.maskLayers(), style);
    case CSSPropertyWebkitMaskSize:
        return createFromFillLayers<CSSPropertyWebkitMaskSize>(style.maskLayers(), style);
    case CSSPropertyWebkitPerspective:
        return createFromDouble(style.perspective());
    case CSSPropertyWebkitPerspectiveOriginX:
        return createFromLength(style.perspectiveOriginX(), style);
    case CSSPropertyWebkitPerspectiveOriginY:
        return createFromLength(style.perspectiveOriginY(), style);
    case CSSPropertyShapeInside:
        return AnimatableShapeValue::create(style.shapeInside());
    case CSSPropertyShapeOutside:
        return AnimatableShapeValue::create(style.shapeOutside());
    case CSSPropertyShapeMargin:
        return createFromLength(style.shapeMargin(), style);
    case CSSPropertyWebkitTextStrokeColor:
        return createFromColor(property, style);
    case CSSPropertyWebkitTransform:
        return AnimatableTransform::create(style.transform());
    case CSSPropertyWebkitTransformOriginX:
        return createFromLength(style.transformOriginX(), style);
    case CSSPropertyWebkitTransformOriginY:
        return createFromLength(style.transformOriginY(), style);
    case CSSPropertyWebkitTransformOriginZ:
        return createFromDouble(style.transformOriginZ());
    case CSSPropertyWidows:
        return createFromDouble(style.widows());
    case CSSPropertyWidth:
        return createFromLength(style.width(), style);
    case CSSPropertyWordSpacing:
        return createFromDouble(style.wordSpacing());
    case CSSPropertyVisibility:
        return AnimatableVisibility::create(style.visibility());
    case CSSPropertyZIndex:
        return createFromDouble(style.zIndex());
    case CSSPropertyZoom:
        return createFromDouble(style.zoom());
    default:
        ASSERT_WITH_MESSAGE(!CSSAnimations::isAnimatableProperty(property), "Web Animations not yet implemented: Create AnimatableValue from render style: %s", getPropertyNameString(property).utf8().data());
        ASSERT_NOT_REACHED();
        // This return value is to avoid a release crash if possible.
        return AnimatableUnknown::create(0);
    }
}