1 files changed, 164 insertions, 0 deletions
diff --git a/dom/svg/SVGFEDisplacementMapElement.cpp b/dom/svg/SVGFEDisplacementMapElement.cpp
new file mode 100644
index 0000000000..84e59d75df
--- /dev/null
+++ b/dom/svg/SVGFEDisplacementMapElement.cpp
@@ -0,0 +1,164 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/SVGFEDisplacementMapElement.h"
+#include "mozilla/dom/SVGFEDisplacementMapElementBinding.h"
+#include "nsSVGFilterInstance.h"
+#include "nsSVGUtils.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEDisplacementMap)
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGFEDisplacementMapElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return SVGFEDisplacementMapElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+nsSVGElement::NumberInfo SVGFEDisplacementMapElement::sNumberInfo[1] =
+{
+  { &nsGkAtoms::scale, 0, false },
+};
+
+nsSVGEnumMapping SVGFEDisplacementMapElement::sChannelMap[] = {
+  {&nsGkAtoms::R, SVG_CHANNEL_R},
+  {&nsGkAtoms::G, SVG_CHANNEL_G},
+  {&nsGkAtoms::B, SVG_CHANNEL_B},
+  {&nsGkAtoms::A, SVG_CHANNEL_A},
+  {nullptr, 0}
+};
+
+nsSVGElement::EnumInfo SVGFEDisplacementMapElement::sEnumInfo[2] =
+{
+  { &nsGkAtoms::xChannelSelector,
+    sChannelMap,
+    SVG_CHANNEL_A
+  },
+  { &nsGkAtoms::yChannelSelector,
+    sChannelMap,
+    SVG_CHANNEL_A
+  }
+};
+
+nsSVGElement::StringInfo SVGFEDisplacementMapElement::sStringInfo[3] =
+{
+  { &nsGkAtoms::result, kNameSpaceID_None, true },
+  { &nsGkAtoms::in, kNameSpaceID_None, true },
+  { &nsGkAtoms::in2, kNameSpaceID_None, true }
+};
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEDisplacementMapElement)
+
+//----------------------------------------------------------------------
+
+already_AddRefed<SVGAnimatedString>
+SVGFEDisplacementMapElement::In1()
+{
+  return mStringAttributes[IN1].ToDOMAnimatedString(this);
+}
+
+already_AddRefed<SVGAnimatedString>
+SVGFEDisplacementMapElement::In2()
+{
+  return mStringAttributes[IN2].ToDOMAnimatedString(this);
+}
+
+already_AddRefed<SVGAnimatedNumber>
+SVGFEDisplacementMapElement::Scale()
+{
+  return mNumberAttributes[SCALE].ToDOMAnimatedNumber(this);
+}
+
+already_AddRefed<SVGAnimatedEnumeration>
+SVGFEDisplacementMapElement::XChannelSelector()
+{
+  return mEnumAttributes[CHANNEL_X].ToDOMAnimatedEnum(this);
+}
+
+already_AddRefed<SVGAnimatedEnumeration>
+SVGFEDisplacementMapElement::YChannelSelector()
+{
+  return mEnumAttributes[CHANNEL_Y].ToDOMAnimatedEnum(this);
+}
+
+FilterPrimitiveDescription
+SVGFEDisplacementMapElement::GetPrimitiveDescription(nsSVGFilterInstance* aInstance,
+                                                     const IntRect& aFilterSubregion,
+                                                     const nsTArray<bool>& aInputsAreTainted,
+                                                     nsTArray<RefPtr<SourceSurface>>& aInputImages)
+{
+  if (aInputsAreTainted[1]) {
+    // If the map is tainted, refuse to apply the effect and act as a
+    // pass-through filter instead, as required by the spec.
+    FilterPrimitiveDescription descr(PrimitiveType::Offset);
+    descr.Attributes().Set(eOffsetOffset, IntPoint(0, 0));
+    return descr;
+  }
+
+  float scale = aInstance->GetPrimitiveNumber(SVGContentUtils::XY,
+                                              &mNumberAttributes[SCALE]);
+  uint32_t xChannel = mEnumAttributes[CHANNEL_X].GetAnimValue();
+  uint32_t yChannel = mEnumAttributes[CHANNEL_Y].GetAnimValue();
+  FilterPrimitiveDescription descr(PrimitiveType::DisplacementMap);
+  descr.Attributes().Set(eDisplacementMapScale, scale);
+  descr.Attributes().Set(eDisplacementMapXChannel, xChannel);
+  descr.Attributes().Set(eDisplacementMapYChannel, yChannel);
+  return descr;
+}
+
+bool
+SVGFEDisplacementMapElement::AttributeAffectsRendering(int32_t aNameSpaceID,
+                                                       nsIAtom* aAttribute) const
+{
+  return SVGFEDisplacementMapElementBase::AttributeAffectsRendering(aNameSpaceID, aAttribute) ||
+         (aNameSpaceID == kNameSpaceID_None &&
+          (aAttribute == nsGkAtoms::in ||
+           aAttribute == nsGkAtoms::in2 ||
+           aAttribute == nsGkAtoms::scale ||
+           aAttribute == nsGkAtoms::xChannelSelector ||
+           aAttribute == nsGkAtoms::yChannelSelector));
+}
+
+void
+SVGFEDisplacementMapElement::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
+{
+  aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN1], this));
+  aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN2], this));
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+nsSVGElement::NumberAttributesInfo
+SVGFEDisplacementMapElement::GetNumberInfo()
+{
+  return NumberAttributesInfo(mNumberAttributes, sNumberInfo,
+                              ArrayLength(sNumberInfo));
+}
+
+nsSVGElement::EnumAttributesInfo
+SVGFEDisplacementMapElement::GetEnumInfo()
+{
+  return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
+                            ArrayLength(sEnumInfo));
+}
+
+nsSVGElement::StringAttributesInfo
+SVGFEDisplacementMapElement::GetStringInfo()
+{
+  return StringAttributesInfo(mStringAttributes, sStringInfo,
+                              ArrayLength(sStringInfo));
+}
+
+} // namespace dom
+} // namespace mozilla