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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
94 lines
3.2 KiB
C++
94 lines
3.2 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 SVGTransformableElement_h
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#define SVGTransformableElement_h
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#include "mozilla/Attributes.h"
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#include "nsAutoPtr.h"
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#include "nsSVGAnimatedTransformList.h"
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#include "nsSVGElement.h"
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#include "gfxMatrix.h"
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#include "mozilla/gfx/Matrix.h"
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namespace mozilla {
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namespace dom {
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class SVGAnimatedTransformList;
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class SVGGraphicsElement;
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class SVGMatrix;
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class SVGIRect;
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struct SVGBoundingBoxOptions;
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class SVGTransformableElement : public nsSVGElement
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{
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public:
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explicit SVGTransformableElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsSVGElement(aNodeInfo) {}
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virtual ~SVGTransformableElement() {}
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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
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bool aPreallocateChildren) const override = 0;
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// WebIDL
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already_AddRefed<SVGAnimatedTransformList> Transform();
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nsSVGElement* GetNearestViewportElement();
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nsSVGElement* GetFarthestViewportElement();
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already_AddRefed<SVGIRect> GetBBox(const SVGBoundingBoxOptions& aOptions,
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ErrorResult& rv);
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already_AddRefed<SVGMatrix> GetCTM();
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already_AddRefed<SVGMatrix> GetScreenCTM();
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already_AddRefed<SVGMatrix> GetTransformToElement(SVGGraphicsElement& aElement,
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ErrorResult& rv);
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// nsIContent interface
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NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
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nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
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int32_t aModType) const override;
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// nsSVGElement overrides
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virtual bool IsEventAttributeName(nsIAtom* aName) override;
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virtual gfxMatrix PrependLocalTransformsTo(
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const gfxMatrix &aMatrix,
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SVGTransformTypes aWhich = eAllTransforms) const override;
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virtual const gfx::Matrix* GetAnimateMotionTransform() const override;
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virtual void SetAnimateMotionTransform(const gfx::Matrix* aMatrix) override;
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virtual nsSVGAnimatedTransformList*
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GetAnimatedTransformList(uint32_t aFlags = 0) override;
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virtual nsIAtom* GetTransformListAttrName() const override {
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return nsGkAtoms::transform;
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}
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virtual bool IsTransformable() override { return true; }
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protected:
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/**
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* Helper for overrides of PrependLocalTransformsTo. If both arguments are
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* provided they are multiplied in the order in which the arguments appear,
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* and the result is returned. If neither argument is provided, the identity
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* matrix is returned. If only one argument is provided its transform is
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* returned.
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*/
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static gfxMatrix GetUserToParentTransform(
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const gfx::Matrix* aAnimateMotionTransform,
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const nsSVGAnimatedTransformList* aTransforms);
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nsAutoPtr<nsSVGAnimatedTransformList> mTransforms;
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// XXX maybe move this to property table, to save space on un-animated elems?
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nsAutoPtr<gfx::Matrix> mAnimateMotionTransform;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // SVGTransformableElement_h
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