dom/svg/SVGFilterElement.cpp
author Ehsan Akhgari <ehsan@mozilla.com>
Sat, 29 Jul 2017 01:07:05 -0400
changeset 423257 559f7f92c891782597759947b89be636c2d4767b
parent 355524 5993b97f7e6a29a24f362ffc1c9a84b67bfb535d
child 438301 67a8e12324569dd730347187e2ffccae486c758b
permissions -rw-r--r--
Bug 1385533 - Reserve space for one pointer in the mMutationObservers array on node slots; r=smaug This helps avoid allocations for the first mutation observer (for example, Range) created by a caller.

/* -*- 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/ArrayUtils.h"

#include "nsGkAtoms.h"
#include "nsCOMPtr.h"
#include "mozilla/dom/SVGFilterElement.h"
#include "mozilla/dom/SVGFilterElementBinding.h"
#include "nsSVGUtils.h"

NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Filter)

namespace mozilla {
namespace dom {

JSObject*
SVGFilterElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
{
  return SVGFilterElementBinding::Wrap(aCx, this, aGivenProto);
}

nsSVGElement::LengthInfo SVGFilterElement::sLengthInfo[4] =
{
  { &nsGkAtoms::x, -10, nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::X },
  { &nsGkAtoms::y, -10, nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::Y },
  { &nsGkAtoms::width, 120, nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::X },
  { &nsGkAtoms::height, 120, nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::Y },
};

nsSVGElement::EnumInfo SVGFilterElement::sEnumInfo[2] =
{
  { &nsGkAtoms::filterUnits,
    sSVGUnitTypesMap,
    SVG_UNIT_TYPE_OBJECTBOUNDINGBOX
  },
  { &nsGkAtoms::primitiveUnits,
    sSVGUnitTypesMap,
    SVG_UNIT_TYPE_USERSPACEONUSE
  }
};

nsSVGElement::StringInfo SVGFilterElement::sStringInfo[2] =
{
  { &nsGkAtoms::href, kNameSpaceID_None, true },
  { &nsGkAtoms::href, kNameSpaceID_XLink, true }
};

//----------------------------------------------------------------------
// Implementation

SVGFilterElement::SVGFilterElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
  : SVGFilterElementBase(aNodeInfo)
{
}

//----------------------------------------------------------------------
// nsIDOMNode methods


NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFilterElement)


//----------------------------------------------------------------------

already_AddRefed<SVGAnimatedLength>
SVGFilterElement::X()
{
  return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
}

already_AddRefed<SVGAnimatedLength>
SVGFilterElement::Y()
{
   return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
}

already_AddRefed<SVGAnimatedLength>
SVGFilterElement::Width()
{
  return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
}

already_AddRefed<SVGAnimatedLength>
SVGFilterElement::Height()
{
  return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
}

already_AddRefed<SVGAnimatedEnumeration>
SVGFilterElement::FilterUnits()
{
  return mEnumAttributes[FILTERUNITS].ToDOMAnimatedEnum(this);
}

already_AddRefed<SVGAnimatedEnumeration>
SVGFilterElement::PrimitiveUnits()
{
  return mEnumAttributes[PRIMITIVEUNITS].ToDOMAnimatedEnum(this);
}

already_AddRefed<SVGAnimatedString>
SVGFilterElement::Href()
{
  return mStringAttributes[HREF].IsExplicitlySet()
         ? mStringAttributes[HREF].ToDOMAnimatedString(this)
         : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
}

//----------------------------------------------------------------------
// nsIContent methods

NS_IMETHODIMP_(bool)
SVGFilterElement::IsAttributeMapped(const nsIAtom* name) const
{
  static const MappedAttributeEntry* const map[] = {
    sFEFloodMap,
    sFiltersMap,
    sFontSpecificationMap,
    sGradientStopMap,
    sLightingEffectsMap,
    sMarkersMap,
    sTextContentElementsMap,
    sViewportsMap
  };
  return FindAttributeDependence(name, map) ||
    SVGFilterElementBase::IsAttributeMapped(name);
}

void
SVGFilterElement::Invalidate()
{
  nsAutoTObserverArray<nsIMutationObserver*, 1> *observers = GetMutationObservers();

  if (observers && !observers->IsEmpty()) {
    nsAutoTObserverArray<nsIMutationObserver*, 1>::ForwardIterator iter(*observers);
    while (iter.HasMore()) {
      nsCOMPtr<nsIMutationObserver> obs(iter.GetNext());
      nsCOMPtr<nsISVGFilterReference> filter = do_QueryInterface(obs);
      if (filter)
        filter->Invalidate();
    }
  }
}

//----------------------------------------------------------------------
// nsSVGElement methods

/* virtual */ bool
SVGFilterElement::HasValidDimensions() const
{
  return (!mLengthAttributes[ATTR_WIDTH].IsExplicitlySet() ||
           mLengthAttributes[ATTR_WIDTH].GetAnimValInSpecifiedUnits() > 0) &&
         (!mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet() ||
           mLengthAttributes[ATTR_HEIGHT].GetAnimValInSpecifiedUnits() > 0);
}

nsSVGElement::LengthAttributesInfo
SVGFilterElement::GetLengthInfo()
{
  return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
                              ArrayLength(sLengthInfo));
}

nsSVGElement::EnumAttributesInfo
SVGFilterElement::GetEnumInfo()
{
  return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
                            ArrayLength(sEnumInfo));
}

nsSVGElement::StringAttributesInfo
SVGFilterElement::GetStringInfo()
{
  return StringAttributesInfo(mStringAttributes, sStringInfo,
                              ArrayLength(sStringInfo));
}

} // namespace dom
} // namespace mozilla