tor-browser

The Tor Browser
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SVGFEComponentTransferElement.cpp (3477B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/SVGFEComponentTransferElement.h"
      8 
      9 #include "mozilla/dom/BindContext.h"
     10 #include "mozilla/dom/Document.h"
     11 #include "mozilla/dom/SVGComponentTransferFunctionElement.h"
     12 #include "mozilla/dom/SVGFEComponentTransferElementBinding.h"
     13 #include "mozilla/gfx/2D.h"
     14 
     15 NS_IMPL_NS_NEW_SVG_ELEMENT(FEComponentTransfer)
     16 
     17 using namespace mozilla::gfx;
     18 ;
     19 
     20 namespace mozilla::dom {
     21 
     22 JSObject* SVGFEComponentTransferElement::WrapNode(
     23    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
     24  return SVGFEComponentTransferElement_Binding::Wrap(aCx, this, aGivenProto);
     25 }
     26 
     27 SVGElement::StringInfo SVGFEComponentTransferElement::sStringInfo[2] = {
     28    {nsGkAtoms::result, kNameSpaceID_None, true},
     29    {nsGkAtoms::in, kNameSpaceID_None, true}};
     30 
     31 //----------------------------------------------------------------------
     32 // nsINode methods
     33 
     34 NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEComponentTransferElement)
     35 
     36 already_AddRefed<DOMSVGAnimatedString> SVGFEComponentTransferElement::In1() {
     37  return mStringAttributes[IN1].ToDOMAnimatedString(this);
     38 }
     39 
     40 //----------------------------------------------------------------------
     41 // SVGElement methods
     42 
     43 SVGElement::StringAttributesInfo
     44 SVGFEComponentTransferElement::GetStringInfo() {
     45  return StringAttributesInfo(mStringAttributes, sStringInfo,
     46                              std::size(sStringInfo));
     47 }
     48 
     49 //--------------------------------------------
     50 
     51 FilterPrimitiveDescription
     52 SVGFEComponentTransferElement::GetPrimitiveDescription(
     53    SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
     54    const nsTArray<bool>& aInputsAreTainted,
     55    nsTArray<RefPtr<SourceSurface>>& aInputImages) {
     56  RefPtr<SVGComponentTransferFunctionElement> childForChannel[4];
     57 
     58  for (nsIContent* childContent = nsINode::GetFirstChild(); childContent;
     59       childContent = childContent->GetNextSibling()) {
     60    if (auto* child =
     61            SVGComponentTransferFunctionElement::FromNode(childContent)) {
     62      childForChannel[child->GetChannel()] = child;
     63    }
     64  }
     65 
     66  ComponentTransferAttributes atts;
     67  for (int32_t i = 0; i < 4; i++) {
     68    if (childForChannel[i]) {
     69      childForChannel[i]->ComputeAttributes(i, atts);
     70    } else {
     71      atts.mTypes[i] = (uint8_t)SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY;
     72    }
     73  }
     74  return FilterPrimitiveDescription(AsVariant(std::move(atts)));
     75 }
     76 
     77 bool SVGFEComponentTransferElement::AttributeAffectsRendering(
     78    int32_t aNameSpaceID, nsAtom* aAttribute) const {
     79  return SVGFEComponentTransferElementBase::AttributeAffectsRendering(
     80             aNameSpaceID, aAttribute) ||
     81         (aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::in);
     82 }
     83 
     84 void SVGFEComponentTransferElement::GetSourceImageNames(
     85    nsTArray<SVGStringInfo>& aSources) {
     86  aSources.AppendElement(SVGStringInfo(&mStringAttributes[IN1], this));
     87 }
     88 
     89 nsresult SVGFEComponentTransferElement::BindToTree(BindContext& aCtx,
     90                                                   nsINode& aParent) {
     91  if (aCtx.InComposedDoc()) {
     92    aCtx.OwnerDoc().SetUseCounter(eUseCounter_custom_feComponentTransfer);
     93  }
     94 
     95  return SVGFEComponentTransferElementBase::BindToTree(aCtx, aParent);
     96 }
     97 
     98 }  // namespace mozilla::dom