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