gecko-dev/dom/svg/SVGRect.h

87 строки
2.5 KiB
C++

/* -*- 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/. */
#ifndef mozilla_dom_SVGRect_h
#define mozilla_dom_SVGRect_h
#include "mozilla/dom/SVGElement.h"
#include "mozilla/gfx/Rect.h"
////////////////////////////////////////////////////////////////////////
// SVGRect class
namespace mozilla {
namespace dom {
class SVGSVGElement;
class SVGRect final : public nsWrapperCache {
public:
typedef enum { BaseValue, AnimValue, CreatedValue } RectType;
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(SVGRect)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(SVGRect)
/**
* Generic ctor for objects that are created for an attribute.
*/
SVGRect(SVGAnimatedViewBox* aVal, SVGElement* aSVGElement, RectType aType)
: mVal(aVal), mParent(aSVGElement), mType(aType) {
MOZ_ASSERT(mParent);
MOZ_ASSERT(mType == BaseValue || mType == AnimValue);
}
/**
* Ctor for creating the objects returned by SVGSVGElement.createSVGRect(),
* which do not initially belong to an attribute.
*/
explicit SVGRect(SVGSVGElement* aSVGElement);
/**
* Ctor for all other non-attribute usage i.e getBBox, getExtentOfChar etc.
*/
SVGRect(nsIContent* aParent, const gfx::Rect& aRect)
: mVal(nullptr), mRect(aRect), mParent(aParent), mType(CreatedValue) {
MOZ_ASSERT(mParent);
}
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
float X();
float Y();
float Width();
float Height();
void SetX(float aX, mozilla::ErrorResult& aRv);
void SetY(float aY, mozilla::ErrorResult& aRv);
void SetWidth(float aWidth, mozilla::ErrorResult& aRv);
void SetHeight(float aHeight, mozilla::ErrorResult& aRv);
nsIContent* GetParentObject() const {
MOZ_ASSERT(mParent);
return mParent;
}
private:
virtual ~SVGRect();
// If we're actually representing a viewBox rect then our value
// will come from that element's viewBox attribute's value.
SVGAnimatedViewBox* mVal; // kept alive because it belongs to content
gfx::Rect mRect;
// If mType is AnimValue or BaseValue this will be an element that
// has a viewBox, otherwise it could be any nsIContent.
RefPtr<nsIContent> mParent;
const RectType mType;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_SVGRect_h