C++ SVGForeignObjectElement类代码示例

JSValue jsSVGForeignObjectElementTransform(ExecState* exec, const Identifier&, const PropertySlot& slot)
{
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(static_cast<JSSVGForeignObjectElement*>(asObject(slot.slotBase()))->impl());
    RefPtr<SVGAnimatedTransformList> obj = imp->transformAnimated();
    return toJS(exec, obj.get(), imp);
}

gfxMatrix
nsSVGForeignObjectFrame::GetCanvasTM(uint32_t aFor, nsIFrame* aTransformRoot)
{
  if (!(GetStateBits() & NS_FRAME_IS_NONDISPLAY) && !aTransformRoot) {
    if (aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) {
      return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
    }
    if (aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled()) {
      return gfxMatrix();
    }
  }
  if (!mCanvasTM) {
    NS_ASSERTION(GetParent(), "null parent");

    nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(GetParent());
    SVGForeignObjectElement *content =
      static_cast<SVGForeignObjectElement*>(mContent);

    gfxMatrix tm = content->PrependLocalTransformsTo(
        this == aTransformRoot ? gfxMatrix() :
                                 parent->GetCanvasTM(aFor, aTransformRoot));

    mCanvasTM = new gfxMatrix(tm);
  }
  return *mCanvasTM;
}

JSValue jsSVGForeignObjectElementExternalResourcesRequired(ExecState* exec, const Identifier&, const PropertySlot& slot)
{
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(static_cast<JSSVGForeignObjectElement*>(asObject(slot.slotBase()))->impl());
    RefPtr<SVGAnimatedBoolean> obj = imp->externalResourcesRequiredAnimated();
    return toJS(exec, obj.get(), imp);
}

JSValue jsSVGForeignObjectElementXmlspace(ExecState* exec, JSValue slotBase, const Identifier&)
{
    JSSVGForeignObjectElement* castedThis = static_cast<JSSVGForeignObjectElement*>(asObject(slotBase));
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThis->impl());
    JSValue result = jsString(exec, imp->xmlspace());
    return result;
}

JSValue jsSVGForeignObjectElementFarthestViewportElement(ExecState* exec, JSValue slotBase, const Identifier&)
{
    JSSVGForeignObjectElement* castedThis = static_cast<JSSVGForeignObjectElement*>(asObject(slotBase));
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThis->impl());
    JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->farthestViewportElement()));
    return result;
}

JSValue jsSVGForeignObjectElementRequiredExtensions(ExecState* exec, JSValue slotBase, const Identifier&)
{
    JSSVGForeignObjectElement* castedThis = static_cast<JSSVGForeignObjectElement*>(asObject(slotBase));
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThis->impl());
    JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->requiredExtensions()), imp);
    return result;
}

JSValue jsSVGForeignObjectElementExternalResourcesRequired(ExecState* exec, JSValue slotBase, const Identifier&)
{
    JSSVGForeignObjectElement* castedThis = static_cast<JSSVGForeignObjectElement*>(asObject(slotBase));
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThis->impl());
    RefPtr<SVGAnimatedBoolean> obj = imp->externalResourcesRequiredAnimated();
    JSValue result =  toJS(exec, castedThis->globalObject(), obj.get(), imp);
    return result;
}

JSValue jsSVGForeignObjectElementTransform(ExecState* exec, JSValue slotBase, const Identifier&)
{
    JSSVGForeignObjectElement* castedThis = static_cast<JSSVGForeignObjectElement*>(asObject(slotBase));
    UNUSED_PARAM(exec);
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThis->impl());
    RefPtr<SVGAnimatedTransformList> obj = imp->transformAnimated();
    JSValue result =  toJS(exec, castedThis->globalObject(), obj.get(), imp);
    return result;
}

JSValue JSC_HOST_CALL jsSVGForeignObjectElementPrototypeFunctionGetBBox(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args)
{
    UNUSED_PARAM(args);
    if (!thisValue.isObject(&JSSVGForeignObjectElement::s_info))
        return throwError(exec, TypeError);
    JSSVGForeignObjectElement* castedThisObj = static_cast<JSSVGForeignObjectElement*>(asObject(thisValue));
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThisObj->impl());


    JSC::JSValue result = toJS(exec, JSSVGStaticPODTypeWrapper<FloatRect>::create(imp->getBBox()).get(), imp);
    return result;
}

void LayoutSVGForeignObject::layout() {
  ASSERT(needsLayout());

  SVGForeignObjectElement* foreign = toSVGForeignObjectElement(node());

  bool updateCachedBoundariesInParents = false;
  if (m_needsTransformUpdate) {
    m_localTransform = foreign->calculateAnimatedLocalTransform();
    m_needsTransformUpdate = false;
    updateCachedBoundariesInParents = true;
  }

  FloatRect oldViewport = m_viewport;

  // Cache viewport boundaries
  SVGLengthContext lengthContext(foreign);
  FloatPoint viewportLocation(
      lengthContext.valueForLength(styleRef().svgStyle().x(), styleRef(),
                                   SVGLengthMode::Width),
      lengthContext.valueForLength(styleRef().svgStyle().y(), styleRef(),
                                   SVGLengthMode::Height));
  m_viewport = FloatRect(
      viewportLocation,
      FloatSize(lengthContext.valueForLength(styleRef().width(), styleRef(),
                                             SVGLengthMode::Width),
                lengthContext.valueForLength(styleRef().height(), styleRef(),
                                             SVGLengthMode::Height)));
  if (!updateCachedBoundariesInParents)
    updateCachedBoundariesInParents = oldViewport != m_viewport;

  // Set box origin to the foreignObject x/y translation, so positioned objects
  // in XHTML content get correct positions. A regular LayoutBoxModelObject
  // would pull this information from ComputedStyle - in SVG those properties
  // are ignored for non <svg> elements, so we mimic what happens when
  // specifying them through CSS.

  // FIXME: Investigate in location rounding issues - only affects
  // LayoutSVGForeignObject & LayoutSVGText
  setLocation(roundedIntPoint(viewportLocation));

  bool layoutChanged = everHadLayout() && selfNeedsLayout();
  LayoutBlock::layout();
  ASSERT(!needsLayout());

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

  // Invalidate all resources of this client if our layout changed.
  if (layoutChanged)
    SVGResourcesCache::clientLayoutChanged(this);
}

JSValue JSC_HOST_CALL jsSVGForeignObjectElementPrototypeFunctionHasExtension(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args)
{
    UNUSED_PARAM(args);
    if (!thisValue.inherits(&JSSVGForeignObjectElement::s_info))
        return throwError(exec, TypeError);
    JSSVGForeignObjectElement* castedThisObj = static_cast<JSSVGForeignObjectElement*>(asObject(thisValue));
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThisObj->impl());
    const UString& extension = args.at(0).toString(exec);


    JSC::JSValue result = jsBoolean(imp->hasExtension(extension));
    return result;
}

JSValue JSC_HOST_CALL jsSVGForeignObjectElementPrototypeFunctionGetPresentationAttribute(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args)
{
    UNUSED_PARAM(args);
    if (!thisValue.inherits(&JSSVGForeignObjectElement::s_info))
        return throwError(exec, TypeError);
    JSSVGForeignObjectElement* castedThisObj = static_cast<JSSVGForeignObjectElement*>(asObject(thisValue));
    SVGForeignObjectElement* imp = static_cast<SVGForeignObjectElement*>(castedThisObj->impl());
    const UString& name = args.at(0).toString(exec);


    JSC::JSValue result = toJS(exec, castedThisObj->globalObject(), WTF::getPtr(imp->getPresentationAttribute(name)));
    return result;
}

gfxMatrix
nsSVGForeignObjectFrame::GetCanvasTM()
{
  if (!mCanvasTM) {
    NS_ASSERTION(GetParent(), "null parent");

    nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(GetParent());
    SVGForeignObjectElement *content =
      static_cast<SVGForeignObjectElement*>(mContent);

    gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM());

    mCanvasTM = new gfxMatrix(tm);
  }
  return *mCanvasTM;
}

void RenderSVGForeignObject::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    ASSERT(needsLayout());
    ASSERT(!view()->layoutStateEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree.

    LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
    SVGForeignObjectElement* foreign = static_cast<SVGForeignObjectElement*>(node());

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

    FloatRect oldViewport = m_viewport;

    // Cache viewport boundaries
    SVGLengthContext lengthContext(foreign);
    FloatPoint viewportLocation(foreign->x().value(lengthContext), foreign->y().value(lengthContext));
    m_viewport = FloatRect(viewportLocation, FloatSize(foreign->width().value(lengthContext), foreign->height().value(lengthContext)));
    if (!updateCachedBoundariesInParents)
        updateCachedBoundariesInParents = oldViewport != m_viewport;

    // Set box origin to the foreignObject x/y translation, so positioned objects in XHTML content get correct
    // positions. A regular RenderBoxModelObject would pull this information from RenderStyle - in SVG those
    // properties are ignored for non <svg> elements, so we mimic what happens when specifying them through CSS.

    // FIXME: Investigate in location rounding issues - only affects RenderSVGForeignObject & RenderSVGText
    setLocation(roundedIntPoint(viewportLocation));

    bool layoutChanged = everHadLayout() && selfNeedsLayout();
    RenderBlock::layout();
    ASSERT(!needsLayout());

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

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

    repainter.repaintAfterLayout();
}

SVGBBox
nsSVGForeignObjectFrame::GetBBoxContribution(const Matrix &aToBBoxUserspace,
                                             uint32_t aFlags)
{
  SVGForeignObjectElement *content =
    static_cast<SVGForeignObjectElement*>(mContent);

  float x, y, w, h;
  content->GetAnimatedLengthValues(&x, &y, &w, &h, nullptr);

  if (w < 0.0f) w = 0.0f;
  if (h < 0.0f) h = 0.0f;

  if (aToBBoxUserspace.IsSingular()) {
    // XXX ReportToConsole
    return SVGBBox();
  }
  return aToBBoxUserspace.TransformBounds(gfx::Rect(0.0, 0.0, w, h));
}