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SVGFEGaussianBlurElement.cpp (4458B)

      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/SVGFEGaussianBlurElement.h"
      8 
      9 #include "mozilla/SVGFilterInstance.h"
     10 #include "mozilla/dom/BindContext.h"
     11 #include "mozilla/dom/Document.h"
     12 #include "mozilla/dom/SVGFEGaussianBlurElementBinding.h"
     13 
     14 NS_IMPL_NS_NEW_SVG_ELEMENT(FEGaussianBlur)
     15 
     16 using namespace mozilla::gfx;
     17 
     18 namespace mozilla::dom {
     19 
     20 JSObject* SVGFEGaussianBlurElement::WrapNode(
     21    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
     22  return SVGFEGaussianBlurElement_Binding::Wrap(aCx, this, aGivenProto);
     23 }
     24 
     25 SVGElement::NumberPairInfo SVGFEGaussianBlurElement::sNumberPairInfo[1] = {
     26    {nsGkAtoms::stdDeviation, 0, 0}};
     27 
     28 SVGElement::StringInfo SVGFEGaussianBlurElement::sStringInfo[2] = {
     29    {nsGkAtoms::result, kNameSpaceID_None, true},
     30    {nsGkAtoms::in, kNameSpaceID_None, true}};
     31 
     32 //----------------------------------------------------------------------
     33 // nsINode methods
     34 
     35 NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEGaussianBlurElement)
     36 
     37 //----------------------------------------------------------------------
     38 
     39 already_AddRefed<DOMSVGAnimatedString> SVGFEGaussianBlurElement::In1() {
     40  return mStringAttributes[IN1].ToDOMAnimatedString(this);
     41 }
     42 
     43 already_AddRefed<DOMSVGAnimatedNumber>
     44 SVGFEGaussianBlurElement::StdDeviationX() {
     45  return mNumberPairAttributes[STD_DEV].ToDOMAnimatedNumber(
     46      SVGAnimatedNumberPair::eFirst, this);
     47 }
     48 
     49 already_AddRefed<DOMSVGAnimatedNumber>
     50 SVGFEGaussianBlurElement::StdDeviationY() {
     51  return mNumberPairAttributes[STD_DEV].ToDOMAnimatedNumber(
     52      SVGAnimatedNumberPair::eSecond, this);
     53 }
     54 
     55 void SVGFEGaussianBlurElement::SetStdDeviation(float stdDeviationX,
     56                                               float stdDeviationY) {
     57  mNumberPairAttributes[STD_DEV].SetBaseValues(stdDeviationX, stdDeviationY,
     58                                               this);
     59 }
     60 
     61 FilterPrimitiveDescription SVGFEGaussianBlurElement::GetPrimitiveDescription(
     62    SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
     63    const nsTArray<bool>& aInputsAreTainted,
     64    nsTArray<RefPtr<SourceSurface>>& aInputImages) {
     65  float stdX = aInstance->GetPrimitiveNumber(SVGContentUtils::X,
     66                                             &mNumberPairAttributes[STD_DEV],
     67                                             SVGAnimatedNumberPair::eFirst);
     68  float stdY = aInstance->GetPrimitiveNumber(SVGContentUtils::Y,
     69                                             &mNumberPairAttributes[STD_DEV],
     70                                             SVGAnimatedNumberPair::eSecond);
     71  if (stdX < 0 || stdY < 0) {
     72    return FilterPrimitiveDescription();
     73  }
     74 
     75  GaussianBlurAttributes atts;
     76  atts.mStdDeviation = Size(stdX, stdY);
     77  return FilterPrimitiveDescription(AsVariant(std::move(atts)));
     78 }
     79 
     80 bool SVGFEGaussianBlurElement::AttributeAffectsRendering(
     81    int32_t aNameSpaceID, nsAtom* aAttribute) const {
     82  return SVGFEGaussianBlurElementBase::AttributeAffectsRendering(aNameSpaceID,
     83                                                                 aAttribute) ||
     84         (aNameSpaceID == kNameSpaceID_None &&
     85          (aAttribute == nsGkAtoms::in ||
     86           aAttribute == nsGkAtoms::stdDeviation));
     87 }
     88 
     89 void SVGFEGaussianBlurElement::GetSourceImageNames(
     90    nsTArray<SVGStringInfo>& aSources) {
     91  aSources.AppendElement(SVGStringInfo(&mStringAttributes[IN1], this));
     92 }
     93 
     94 nsresult SVGFEGaussianBlurElement::BindToTree(BindContext& aCtx,
     95                                              nsINode& aParent) {
     96  if (aCtx.InComposedDoc()) {
     97    aCtx.OwnerDoc().SetUseCounter(eUseCounter_custom_feGaussianBlur);
     98  }
     99 
    100  return SVGFEGaussianBlurElementBase::BindToTree(aCtx, aParent);
    101 }
    102 
    103 //----------------------------------------------------------------------
    104 // SVGElement methods
    105 
    106 SVGElement::NumberPairAttributesInfo
    107 SVGFEGaussianBlurElement::GetNumberPairInfo() {
    108  return NumberPairAttributesInfo(mNumberPairAttributes, sNumberPairInfo,
    109                                  std::size(sNumberPairInfo));
    110 }
    111 
    112 SVGElement::StringAttributesInfo SVGFEGaussianBlurElement::GetStringInfo() {
    113  return StringAttributesInfo(mStringAttributes, sStringInfo,
    114                              std::size(sStringInfo));
    115 }
    116 
    117 }  // namespace mozilla::dom