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7fdb378650
Currently, attribute and child arrays (implemented in dom/base/nsAttrAndChildArray.h) start out empty. When cloning, the array ends up being resized multiple times in order to add the attributes and children that are being cloned from the original node. This would be quicker if the array was initialized to the correct size in the first place so that resizes are not necessary. However, preallocating space for children is only necessary when performing a deep clone. Therefore, an additional parameter is being added to the Clone, CopyInnerTo, and CloneDocHelper methods to indicate whether preallocation of children should happen. Attributes are copied either way, so that part of the array is preallocated in both cases. MozReview-Commit-ID: 3iVezeAKXnI --HG-- extra : rebase_source : 9c3deec6d7aafd6411044d623d4863637b45fd58
55 lines
2.0 KiB
C++
55 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_SVGFEMergeElement_h
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#define mozilla_dom_SVGFEMergeElement_h
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#include "nsSVGFilters.h"
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nsresult NS_NewSVGFEMergeElement(nsIContent **aResult,
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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namespace mozilla {
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namespace dom {
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typedef nsSVGFE SVGFEMergeElementBase;
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class SVGFEMergeElement : public SVGFEMergeElementBase
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{
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friend nsresult (::NS_NewSVGFEMergeElement(nsIContent **aResult,
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
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protected:
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explicit SVGFEMergeElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: SVGFEMergeElementBase(aNodeInfo)
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{
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}
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virtual JSObject* WrapNode(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
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public:
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virtual FilterPrimitiveDescription
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GetPrimitiveDescription(nsSVGFilterInstance* aInstance,
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const IntRect& aFilterSubregion,
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const nsTArray<bool>& aInputsAreTainted,
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nsTArray<RefPtr<SourceSurface>>& aInputImages) override;
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virtual nsSVGString& GetResultImageName() override { return mStringAttributes[RESULT]; }
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virtual void GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources) override;
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// nsIContent
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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
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bool aPreallocateChildren) const override;
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protected:
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virtual StringAttributesInfo GetStringInfo() override;
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enum { RESULT };
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nsSVGString mStringAttributes[1];
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static StringInfo sStringInfo[1];
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_SVGFEMergeElement_h
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