C++ SVGStyledTransformableElement::animatedLocalTransform方法代码示例

void RenderPath::layout()
{
    LayoutRepainter repainter(*this, m_everHadLayout && checkForRepaintDuringLayout());
    SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());

    bool needsPathUpdate = m_needsPathUpdate;
    if (needsPathUpdate) {
        m_path = element->toPathData();
        m_needsPathUpdate = false;
    }

    if (m_needsTransformUpdate) {
        m_localTransform = element->animatedLocalTransform();
        m_needsTransformUpdate = false;
    }

    // Invalidate all resources of this client if our layout changed.
    if (m_everHadLayout && selfNeedsLayout())
        SVGResourcesCache::clientLayoutChanged(this);

    // At this point LayoutRepainter already grabbed the old bounds,
    // recalculate them now so repaintAfterLayout() uses the new bounds
    if (needsPathUpdate || m_needsBoundariesUpdate) {
        updateCachedBoundaries();
        m_needsBoundariesUpdate = false;
    }

    repainter.repaintAfterLayout();
    setNeedsLayout(false);
}

void RenderSVGShape::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(this) && selfNeedsLayout());
    SVGStyledTransformableElement* element = toSVGStyledTransformableElement(node());

    bool updateCachedBoundariesInParents = false;

    if (m_needsShapeUpdate || m_needsBoundariesUpdate) {
        updateShapeFromElement();
        m_needsShapeUpdate = false;
        updateRepaintBoundingBox();
        m_needsBoundariesUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    if (m_needsTransformUpdate) {
        m_localTransform = element->animatedLocalTransform();
        m_needsTransformUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    // Invalidate all resources of this client if our layout changed.
    if (everHadLayout() && selfNeedsLayout())
        SVGResourcesCache::clientLayoutChanged(this);

    // If our bounds changed, notify the parents.
    if (updateCachedBoundariesInParents)
        RenderSVGModelObject::setNeedsBoundariesUpdate();

    repainter.repaintAfterLayout();
    setNeedsLayout(false);
}

SVGResource* SVGClipPathElement::canvasResource()
{
    if (!m_clipper)
        m_clipper = SVGResourceClipper::create();
    else
        m_clipper->resetClipData();

    bool bbox = clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;

    RenderStyle* clipPathStyle = styleForRenderer(parent()->renderer()); // FIXME: Manual style resolution is a hack
    for (Node* n = firstChild(); n; n = n->nextSibling()) {
        if (n->isSVGElement() && static_cast<SVGElement*>(n)->isStyledTransformable()) {
            SVGStyledTransformableElement* styled = static_cast<SVGStyledTransformableElement*>(n);
            RenderStyle* pathStyle = document()->styleSelector()->styleForElement(styled, clipPathStyle);
            if (pathStyle->display() != NONE) {
                Path pathData = styled->toClipPath();
                // FIXME: How do we know the element has done a layout?
                pathData.transform(styled->animatedLocalTransform());
                if (!pathData.isEmpty())
                    m_clipper->addClipData(pathData, pathStyle->svgStyle()->clipRule(), bbox);
            }
            pathStyle->deref(document()->renderArena());
        }
    }
    if (m_clipper->clipData().isEmpty()) {
        Path pathData;
        pathData.addRect(FloatRect());
        m_clipper->addClipData(pathData, RULE_EVENODD, bbox);
    }
    clipPathStyle->deref(document()->renderArena());
    return m_clipper.get();
}

bool RenderSVGTransformableContainer::calculateLocalTransform()
{
    SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());

    // If we're either the renderer for a <use> element, or for any <g> element inside the shadow
    // tree, that was created during the use/symbol/svg expansion in SVGUseElement. These containers
    // need to respect the translations induced by their corresponding use elements x/y attributes.
    SVGUseElement* useElement = 0;
    if (element->hasTagName(SVGNames::useTag))
        useElement = static_cast<SVGUseElement*>(element);
    else if (element->isInShadowTree() && element->hasTagName(SVGNames::gTag)) {
        SVGElement* correspondingElement = element->correspondingElement();
        if (correspondingElement && correspondingElement->hasTagName(SVGNames::useTag))
            useElement = static_cast<SVGUseElement*>(correspondingElement);
    }

    if (useElement) {
        SVGLengthContext lengthContext(useElement);
        FloatSize translation(useElement->x().value(lengthContext), useElement->y().value(lengthContext));
        if (translation != m_lastTranslation)
            m_needsTransformUpdate = true;
        m_lastTranslation = translation;
    }

    m_didTransformToRootUpdate = m_needsTransformUpdate || SVGRenderSupport::transformToRootChanged(parent());
    if (!m_needsTransformUpdate)
        return false;

    m_localTransform = element->animatedLocalTransform();
    m_localTransform.translate(m_lastTranslation.width(), m_lastTranslation.height());
    m_needsTransformUpdate = false;
    return true;
}

void RenderPath::layout()
{
    LayoutRepainter repainter(*this, checkForRepaintDuringLayout() && selfNeedsLayout());

    SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
    m_localTransform = element->animatedLocalTransform();
    setPath(element->toPathData());

    repainter.repaintAfterLayout();
    setNeedsLayout(false);
}

bool RenderSVGTransformableContainer::calculateLocalTransform()
{
    SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());

    bool needsUpdate = m_needsTransformUpdate;
    if (needsUpdate) {
        m_localTransform = element->animatedLocalTransform();
        m_needsTransformUpdate = false;
    }

    if (!element->hasTagName(SVGNames::gTag) || !static_cast<SVGGElement*>(element)->isShadowTreeContainerElement())
        return needsUpdate;

    FloatSize translation = static_cast<SVGShadowTreeContainerElement*>(element)->containerTranslation();
    if (translation.width() == 0 && translation.height() == 0)
        return needsUpdate;

    // FIXME: Could optimize this case for use to avoid refetching the animatedLocalTransform() here, if only the containerTranslation() changed.
    if (!needsUpdate)
        m_localTransform = element->animatedLocalTransform();

    m_localTransform.translate(translation.width(), translation.height());
    return true;
}