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