113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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_DOMSVGPOINT_H__
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#define MOZILLA_DOMSVGPOINT_H__
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#include "DOMSVGPointList.h"
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#include "mozilla/gfx/2D.h"
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#include "nsDebug.h"
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#include "nsISVGPoint.h"
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#include "SVGPoint.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/FloatingPoint.h"
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class nsSVGElement;
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namespace mozilla {
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namespace dom {
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class SVGMatrix;
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} // namespace dom
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/**
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* Class DOMSVGPoint
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*
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* This class creates the DOM objects that wrap internal SVGPoint objects that
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* are in an SVGPointList. It is also used to create the objects returned by
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* SVGSVGElement.createSVGPoint() and other functions that return DOM SVGPoint
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* objects.
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*
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* See the architecture comment in DOMSVGPointList.h for an overview of the
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* important points regarding these DOM wrapper structures.
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*
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* See the architecture comment in DOMSVGLength.h (yes, LENGTH) for an overview
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* of the important points regarding how this specific class works.
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*/
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class DOMSVGPoint final : public nsISVGPoint
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{
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friend class AutoChangePointNotifier;
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typedef mozilla::gfx::Point Point;
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public:
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/**
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* Generic ctor for DOMSVGPoint objects that are created for an attribute.
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*/
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DOMSVGPoint(DOMSVGPointList *aList,
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uint32_t aListIndex,
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bool aIsAnimValItem)
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: nsISVGPoint()
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{
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mList = aList;
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mListIndex = aListIndex;
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mIsAnimValItem = aIsAnimValItem;
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// These shifts are in sync with the members.
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MOZ_ASSERT(aList && aListIndex <= MaxListIndex(), "bad arg");
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MOZ_ASSERT(IndexIsValid(), "Bad index for DOMSVGPoint!");
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}
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explicit DOMSVGPoint(const DOMSVGPoint *aPt = nullptr)
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: nsISVGPoint()
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{
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if (aPt) {
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mPt = aPt->ToSVGPoint();
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}
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}
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DOMSVGPoint(float aX, float aY)
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: nsISVGPoint()
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{
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mPt.mX = aX;
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mPt.mY = aY;
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}
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explicit DOMSVGPoint(const Point& aPt)
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: nsISVGPoint()
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{
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mPt.mX = aPt.x;
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mPt.mY = aPt.y;
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NS_ASSERTION(IsFinite(mPt.mX) && IsFinite(mPt.mX),
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"DOMSVGPoint coords are not finite");
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}
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// WebIDL
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virtual float X() override;
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virtual void SetX(float aX, ErrorResult& rv) override;
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virtual float Y() override;
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virtual void SetY(float aY, ErrorResult& rv) override;
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virtual already_AddRefed<nsISVGPoint> MatrixTransform(dom::SVGMatrix& matrix) override;
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nsISupports* GetParentObject() override {
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return mList;
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}
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virtual DOMSVGPoint* Copy() override {
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return new DOMSVGPoint(this);
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}
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protected:
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nsSVGElement* Element() {
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return mList->Element();
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}
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};
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} // namespace mozilla
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#endif // MOZILLA_DOMSVGPOINT_H__
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