dom/svg/SVGFEComponentTransferElement.cpp

   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/SVGComponentTransferFunctionElement.h"
  10 #include "mozilla/dom/SVGFEComponentTransferElementBinding.h"
  11 #include "mozilla/gfx/2D.h"
  12 #include "mozilla/dom/Document.h"
  13 #include "mozilla/dom/BindContext.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