C++ RenderObject::getCachedPseudoStyle方法代码示例

void SVGInlineTextBox::paintSelectionBackground(PaintInfo& paintInfo)
{
    ASSERT(paintInfo.shouldPaintWithinRoot(renderer()));
    ASSERT(paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection);
    ASSERT(truncation() == cNoTruncation);

    if (renderer()->style()->visibility() != VISIBLE)
        return;

    RenderObject* parentRenderer = parent()->renderer();
    ASSERT(parentRenderer);
    ASSERT(!parentRenderer->document()->printing());

    // Determine whether or not we're selected.
    bool paintSelectedTextOnly = paintInfo.phase == PaintPhaseSelection;
    bool hasSelection = selectionState() != RenderObject::SelectionNone;
    if (!hasSelection || paintSelectedTextOnly)
        return;

    Color backgroundColor = renderer()->selectionBackgroundColor();
    if (!backgroundColor.isValid() || !backgroundColor.alpha())
        return;

    RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
    ASSERT(textRenderer);
    if (!textShouldBePainted(textRenderer))
        return;

    RenderStyle* style = parentRenderer->style();
    ASSERT(style);

    RenderStyle* selectionStyle = style;
    if (hasSelection) {
        selectionStyle = parentRenderer->getCachedPseudoStyle(SELECTION);
        if (!selectionStyle)
            selectionStyle = style;
    }

    int startPosition, endPosition;
    selectionStartEnd(startPosition, endPosition);

    int fragmentStartPosition = 0;
    int fragmentEndPosition = 0;
    AffineTransform fragmentTransform;
    unsigned textFragmentsSize = m_textFragments.size();
    for (unsigned i = 0; i < textFragmentsSize; ++i) {
        SVGTextFragment& fragment = m_textFragments.at(i);
        ASSERT(!m_paintingResource);

        fragmentStartPosition = startPosition;
        fragmentEndPosition = endPosition;
        if (!mapStartEndPositionsIntoFragmentCoordinates(fragment, fragmentStartPosition, fragmentEndPosition))
            continue;

        GraphicsContextStateSaver stateSaver(*paintInfo.context);
        fragment.buildFragmentTransform(fragmentTransform);
        if (!fragmentTransform.isIdentity())
            paintInfo.context->concatCTM(fragmentTransform);

        paintInfo.context->setFillColor(backgroundColor, style->colorSpace());
        paintInfo.context->fillRect(selectionRectForTextFragment(fragment, fragmentStartPosition, fragmentEndPosition, style), backgroundColor, style->colorSpace());

        m_paintingResourceMode = ApplyToDefaultMode;
    }

    ASSERT(!m_paintingResource);
}

void SVGInlineTextBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit, LayoutUnit)
{
    ASSERT(paintInfo.shouldPaintWithinRoot(renderer()));
    ASSERT(paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection);
    ASSERT(truncation() == cNoTruncation);

    if (renderer()->style()->visibility() != VISIBLE)
        return;

    // Note: We're explicitely not supporting composition & custom underlines and custom highlighters - unlike InlineTextBox.
    // If we ever need that for SVG, it's very easy to refactor and reuse the code.

    RenderObject* parentRenderer = parent()->renderer();
    ASSERT(parentRenderer);

    bool paintSelectedTextOnly = paintInfo.phase == PaintPhaseSelection;
    bool hasSelection = !parentRenderer->document().printing() && selectionState() != RenderObject::SelectionNone;
    if (!hasSelection && paintSelectedTextOnly)
        return;

    RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
    ASSERT(textRenderer);
    if (!textShouldBePainted(textRenderer))
        return;

    RenderStyle* style = parentRenderer->style();
    ASSERT(style);

    paintDocumentMarkers(paintInfo.context, paintOffset, style, textRenderer->scaledFont(), true);

    const SVGRenderStyle* svgStyle = style->svgStyle();
    ASSERT(svgStyle);

    bool hasFill = svgStyle->hasFill();
    bool hasVisibleStroke = svgStyle->hasVisibleStroke();

    RenderStyle* selectionStyle = style;
    if (hasSelection) {
        selectionStyle = parentRenderer->getCachedPseudoStyle(SELECTION);
        if (selectionStyle) {
            const SVGRenderStyle* svgSelectionStyle = selectionStyle->svgStyle();
            ASSERT(svgSelectionStyle);

            if (!hasFill)
                hasFill = svgSelectionStyle->hasFill();
            if (!hasVisibleStroke)
                hasVisibleStroke = svgSelectionStyle->hasVisibleStroke();
        } else
            selectionStyle = style;
    }

    if (textRenderer->frame() && textRenderer->frame()->view() && textRenderer->frame()->view()->paintBehavior() & PaintBehaviorRenderingSVGMask) {
        hasFill = true;
        hasVisibleStroke = false;
    }

    AffineTransform fragmentTransform;
    unsigned textFragmentsSize = m_textFragments.size();
    for (unsigned i = 0; i < textFragmentsSize; ++i) {
        SVGTextFragment& fragment = m_textFragments.at(i);
        ASSERT(!m_paintingResource);

        GraphicsContextStateSaver stateSaver(*paintInfo.context, false);
        fragment.buildFragmentTransform(fragmentTransform);
        if (!fragmentTransform.isIdentity()) {
            stateSaver.save();
            paintInfo.context->concatCTM(fragmentTransform);
        }

        // Spec: All text decorations except line-through should be drawn before the text is filled and stroked; thus, the text is rendered on top of these decorations.
        unsigned decorations = style->textDecorationsInEffect();
        if (decorations & TextDecorationUnderline)
            paintDecoration(paintInfo.context, TextDecorationUnderline, fragment);
        if (decorations & TextDecorationOverline)
            paintDecoration(paintInfo.context, TextDecorationOverline, fragment);

        for (int i = 0; i < 3; i++) {
            switch (svgStyle->paintOrderType(i)) {
            case PT_FILL:
                // Fill text
                if (hasFill) {
                    m_paintingResourceMode = ApplyToFillMode | ApplyToTextMode;
                    paintText(paintInfo.context, style, selectionStyle, fragment, hasSelection, paintSelectedTextOnly);
                }
                break;
            case PT_STROKE:
                // Stroke text
                if (hasVisibleStroke) {
                    m_paintingResourceMode = ApplyToStrokeMode | ApplyToTextMode;
                    paintText(paintInfo.context, style, selectionStyle, fragment, hasSelection, paintSelectedTextOnly);
                }
                break;
            case PT_MARKERS:
                // Markers don't apply to text
                break;
            default:
                ASSERT_NOT_REACHED();
                break;
            }
        }
//.........这里部分代码省略.........

void SVGInlineTextBox::paint(PaintInfo& paintInfo, int, int)
{
    ASSERT(paintInfo.shouldPaintWithinRoot(renderer()));
    ASSERT(paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection);
    ASSERT(truncation() == cNoTruncation);

    if (renderer()->style()->visibility() != VISIBLE)
        return;

    // Note: We're explicitely not supporting composition & custom underlines and custom highlighters - unlike InlineTextBox.
    // If we ever need that for SVG, it's very easy to refactor and reuse the code.

    RenderObject* parentRenderer = parent()->renderer();
    ASSERT(parentRenderer);

    bool paintSelectedTextOnly = paintInfo.phase == PaintPhaseSelection;
    bool hasSelection = !parentRenderer->document()->printing() && selectionState() != RenderObject::SelectionNone;
    if (!hasSelection && paintSelectedTextOnly)
        return;

    RenderStyle* style = parentRenderer->style();
    ASSERT(style);

    const SVGRenderStyle* svgStyle = style->svgStyle();
    ASSERT(svgStyle);

    bool hasFill = svgStyle->hasFill();
    bool hasStroke = svgStyle->hasStroke();

    RenderStyle* selectionStyle = style;
    if (hasSelection) {
        selectionStyle = parentRenderer->getCachedPseudoStyle(SELECTION);
        if (selectionStyle) {
            const SVGRenderStyle* svgSelectionStyle = selectionStyle->svgStyle();
            ASSERT(svgSelectionStyle);

            if (!hasFill)
                hasFill = svgSelectionStyle->hasFill();
            if (!hasStroke)
                hasStroke = svgSelectionStyle->hasStroke();
        } else
            selectionStyle = style;
    }

    unsigned textFragmentsSize = m_textFragments.size();
    for (unsigned i = 0; i < textFragmentsSize; ++i) {
        SVGTextFragment& fragment = m_textFragments.at(i);
        ASSERT(!m_paintingResource);

        paintInfo.context->save();

        if (!fragment.transform.isIdentity())
            paintInfo.context->concatCTM(fragment.transform);

        // Spec: All text decorations except line-through should be drawn before the text is filled and stroked; thus, the text is rendered on top of these decorations.
        int decorations = style->textDecorationsInEffect();
        if (decorations & UNDERLINE)
            paintDecoration(paintInfo.context, UNDERLINE, fragment);
        if (decorations & OVERLINE)
            paintDecoration(paintInfo.context, OVERLINE, fragment);

        // Fill text
        if (hasFill) {
            m_paintingResourceMode = ApplyToFillMode | ApplyToTextMode;
            paintText(paintInfo.context, style, selectionStyle, fragment, hasSelection, paintSelectedTextOnly);
        }

        // Stroke text
        if (hasStroke) {
            m_paintingResourceMode = ApplyToStrokeMode | ApplyToTextMode;
            paintText(paintInfo.context, style, selectionStyle, fragment, hasSelection, paintSelectedTextOnly);
        }

        // Spec: Line-through should be drawn after the text is filled and stroked; thus, the line-through is rendered on top of the text.
        if (decorations & LINE_THROUGH)
            paintDecoration(paintInfo.context, LINE_THROUGH, fragment);

        m_paintingResourceMode = ApplyToDefaultMode;
        paintInfo.context->restore();
    }

    ASSERT(!m_paintingResource);
}