Exemple #1
0
IntSize SVGImage::containerSize() const
{
    SVGSVGElement* rootElement = this->rootElement();
    if (!rootElement)
        return IntSize();

    auto* renderer = downcast<RenderSVGRoot>(rootElement->renderer());
    if (!renderer)
        return IntSize();

    // If a container size is available it has precedence.
    IntSize containerSize = renderer->containerSize();
    if (!containerSize.isEmpty())
        return containerSize;

    // Assure that a container size is always given for a non-identity zoom level.
    ASSERT(renderer->style().effectiveZoom() == 1);

    FloatSize currentSize;
    if (rootElement->hasIntrinsicWidth() && rootElement->hasIntrinsicHeight())
        currentSize = rootElement->currentViewportSize();
    else
        currentSize = rootElement->currentViewBoxRect().size();

    if (!currentSize.isEmpty())
        return IntSize(static_cast<int>(ceilf(currentSize.width())), static_cast<int>(ceilf(currentSize.height())));

    // As last resort, use CSS default intrinsic size.
    return IntSize(300, 150);
}
LayoutUnit RenderSVGRoot::computeReplacedLogicalWidth(ShouldComputePreferred shouldComputePreferred) const
{
    SVGSVGElement* svg = toSVGSVGElement(node());
    ASSERT(svg);

    // When we're embedded through SVGImage (border-image/background-image/<html:img>/...) we're forced to resize to a specific size.
    if (!m_containerSize.isEmpty())
        return m_containerSize.width();

    if (isEmbeddedThroughFrameContainingSVGDocument())
        return containingBlock()->availableLogicalWidth();

    if (style()->logicalWidth().isSpecified() || style()->logicalMaxWidth().isSpecified())
        return RenderReplaced::computeReplacedLogicalWidth(shouldComputePreferred);

    if (svg->hasIntrinsicWidth())
        return resolveLengthAttributeForSVG(svg->intrinsicWidth(), style()->effectiveZoom(), containingBlock()->availableLogicalWidth().toFloat());

    // SVG embedded via SVGImage (background-image/border-image/etc) / Inline SVG.
    return RenderReplaced::computeReplacedLogicalWidth(shouldComputePreferred);
}