dom/svg/SVGFEMorphologyElement.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/SVGFEMorphologyElement.h"
   8 #include "mozilla/dom/SVGFEMorphologyElementBinding.h"
   9 #include "mozilla/SVGFilterInstance.h"
  10 #include "mozilla/dom/BindContext.h"
  11 #include "mozilla/dom/Document.h"
  12
  13 NS_IMPL_NS_NEW_SVG_ELEMENT(FEMorphology)
  14
  15 using namespace mozilla::gfx;
  16
  17 namespace mozilla::dom {
  18
  19 JSObject* SVGFEMorphologyElement::WrapNode(JSContext* aCx,
  20                                            JS::Handle<JSObject*> aGivenProto) {
  21   return SVGFEMorphologyElement_Binding::Wrap(aCx, this, aGivenProto);
  22 }
  23
  24 SVGElement::NumberPairInfo SVGFEMorphologyElement::sNumberPairInfo[1] = {
  25     {nsGkAtoms::radius, 0, 0}};
  26
  27 SVGEnumMapping SVGFEMorphologyElement::sOperatorMap[] = {
  28     {nsGkAtoms::erode, SVG_OPERATOR_ERODE},
  29     {nsGkAtoms::dilate, SVG_OPERATOR_DILATE},
  30     {nullptr, 0}};
  31
  32 SVGElement::EnumInfo SVGFEMorphologyElement::sEnumInfo[1] = {
  33     {nsGkAtoms::_operator, sOperatorMap, SVG_OPERATOR_ERODE}};
  34
  35 SVGElement::StringInfo SVGFEMorphologyElement::sStringInfo[2] = {
  36     {nsGkAtoms::result, kNameSpaceID_None, true},
  37     {nsGkAtoms::in, kNameSpaceID_None, true}};
  38
  39 //----------------------------------------------------------------------
  40 // nsINode methods
  41
  42 NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEMorphologyElement)
  43
  44 //----------------------------------------------------------------------
  45 // SVGFEMorphologyElement methods
  46
  47 already_AddRefed<DOMSVGAnimatedString> SVGFEMorphologyElement::In1() {
  48   return mStringAttributes[IN1].ToDOMAnimatedString(this);
  49 }
  50
  51 already_AddRefed<DOMSVGAnimatedEnumeration> SVGFEMorphologyElement::Operator() {
  52   return mEnumAttributes[OPERATOR].ToDOMAnimatedEnum(this);
  53 }
  54
  55 already_AddRefed<DOMSVGAnimatedNumber> SVGFEMorphologyElement::RadiusX() {
  56   return mNumberPairAttributes[RADIUS].ToDOMAnimatedNumber(
  57       SVGAnimatedNumberPair::eFirst, this);
  58 }
  59
  60 already_AddRefed<DOMSVGAnimatedNumber> SVGFEMorphologyElement::RadiusY() {
  61   return mNumberPairAttributes[RADIUS].ToDOMAnimatedNumber(
  62       SVGAnimatedNumberPair::eSecond, this);
  63 }
  64
  65 void SVGFEMorphologyElement::SetRadius(float rx, float ry) {
  66   mNumberPairAttributes[RADIUS].SetBaseValues(rx, ry, this);
  67 }
  68
  69 void SVGFEMorphologyElement::GetSourceImageNames(
  70     nsTArray<SVGStringInfo>& aSources) {
  71   aSources.AppendElement(SVGStringInfo(&mStringAttributes[IN1], this));
  72 }
  73
  74 #define MORPHOLOGY_EPSILON 0.0001
  75
  76 void SVGFEMorphologyElement::GetRXY(int32_t* aRX, int32_t* aRY,
  77                                     const SVGFilterInstance& aInstance) {
  78   // Subtract an epsilon here because we don't want a value that's just
  79   // slightly larger than an integer to round up to the next integer; it's
  80   // probably meant to be the integer it's close to, modulo machine precision
  81   // issues.
  82   *aRX = NSToIntCeil(aInstance.GetPrimitiveNumber(
  83                          SVGContentUtils::X, &mNumberPairAttributes[RADIUS],
  84                          SVGAnimatedNumberPair::eFirst) -
  85                      MORPHOLOGY_EPSILON);
  86   *aRY = NSToIntCeil(aInstance.GetPrimitiveNumber(
  87                          SVGContentUtils::Y, &mNumberPairAttributes[RADIUS],
  88                          SVGAnimatedNumberPair::eSecond) -
  89                      MORPHOLOGY_EPSILON);
  90 }
  91
  92 FilterPrimitiveDescription SVGFEMorphologyElement::GetPrimitiveDescription(
  93     SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
  94     const nsTArray<bool>& aInputsAreTainted,
  95     nsTArray<RefPtr<SourceSurface>>& aInputImages) {
  96   int32_t rx, ry;
  97   GetRXY(&rx, &ry, *aInstance);
  98   MorphologyAttributes atts;
  99   atts.mRadii = Size(rx, ry);
 100   atts.mOperator = (uint32_t)mEnumAttributes[OPERATOR].GetAnimValue();
 101   return FilterPrimitiveDescription(AsVariant(std::move(atts)));
 102 }
 103
 104 bool SVGFEMorphologyElement::AttributeAffectsRendering(
 105     int32_t aNameSpaceID, nsAtom* aAttribute) const {
 106   return SVGFEMorphologyElementBase::AttributeAffectsRendering(aNameSpaceID,
 107                                                                aAttribute) ||
 108          (aNameSpaceID == kNameSpaceID_None &&
 109           (aAttribute == nsGkAtoms::in || aAttribute == nsGkAtoms::radius ||
 110            aAttribute == nsGkAtoms::_operator));
 111 }
 112
 113 nsresult SVGFEMorphologyElement::BindToTree(BindContext& aCtx,
 114                                             nsINode& aParent) {
 115   if (aCtx.InComposedDoc()) {
 116     aCtx.OwnerDoc().SetUseCounter(eUseCounter_custom_feMorphology);
 117   }
 118
 119   return SVGFE::BindToTree(aCtx, aParent);
 120 }
 121
 122 //----------------------------------------------------------------------
 123 // SVGElement methods
 124
 125 SVGElement::NumberPairAttributesInfo
 126 SVGFEMorphologyElement::GetNumberPairInfo() {
 127   return NumberPairAttributesInfo(mNumberPairAttributes, sNumberPairInfo,
 128                                   ArrayLength(sNumberPairInfo));
 129 }
 130
 131 SVGElement::EnumAttributesInfo SVGFEMorphologyElement::GetEnumInfo() {
 132   return EnumAttributesInfo(mEnumAttributes, sEnumInfo, ArrayLength(sEnumInfo));
 133 }
 134
 135 SVGElement::StringAttributesInfo SVGFEMorphologyElement::GetStringInfo() {
 136   return StringAttributesInfo(mStringAttributes, sStringInfo,
 137                               ArrayLength(sStringInfo));
 138 }
 139
 140 }  // namespace mozilla::dom