dom/base/DOMQuad.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_DOMQUAD_H_
   8 #define MOZILLA_DOMQUAD_H_
   9
  10 #include <cstdint>
  11 #include "Units.h"
  12 #include "js/TypeDecls.h"
  13 #include "mozilla/AlreadyAddRefed.h"
  14 #include "mozilla/Assertions.h"
  15 #include "mozilla/RefPtr.h"
  16 #include "nsCOMPtr.h"
  17 #include "nsCycleCollectionParticipant.h"
  18 #include "nsISupports.h"
  19 #include "nsWrapperCache.h"
  20
  21 class JSObject;
  22 class nsIGlobalObject;
  23 struct JSContext;
  24 struct JSStructuredCloneReader;
  25 struct JSStructuredCloneWriter;
  26
  27 namespace mozilla {
  28 namespace dom {
  29
  30 class DOMRectReadOnly;
  31 class DOMPoint;
  32 class GlobalObject;
  33 struct DOMPointInit;
  34 struct DOMQuadInit;
  35 struct DOMRectInit;
  36
  37 class DOMQuad final : public nsWrapperCache {
  38   ~DOMQuad();
  39
  40  public:
  41   DOMQuad(nsISupports* aParent, CSSPoint aPoints[4]);
  42   explicit DOMQuad(nsISupports* aParent);
  43
  44   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(DOMQuad)
  45   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(DOMQuad)
  46
  47   nsISupports* GetParentObject() const { return mParent; }
  48   virtual JSObject* WrapObject(JSContext* aCx,
  49                                JS::Handle<JSObject*> aGivenProto) override;
  50
  51   static already_AddRefed<DOMQuad> FromRect(const GlobalObject& aGlobal,
  52                                             const DOMRectInit& aInit);
  53
  54   static already_AddRefed<DOMQuad> FromQuad(const GlobalObject& aGlobal,
  55                                             const DOMQuadInit& aInit);
  56
  57   static already_AddRefed<DOMQuad> Constructor(const GlobalObject& aGlobal,
  58                                                const DOMPointInit& aP1,
  59                                                const DOMPointInit& aP2,
  60                                                const DOMPointInit& aP3,
  61                                                const DOMPointInit& aP4);
  62   static already_AddRefed<DOMQuad> Constructor(const GlobalObject& aGlobal,
  63                                                const DOMRectReadOnly& aRect);
  64
  65   already_AddRefed<DOMRectReadOnly> GetBounds() const;
  66   DOMPoint* P1() const { return mPoints[0]; }
  67   DOMPoint* P2() const { return mPoints[1]; }
  68   DOMPoint* P3() const { return mPoints[2]; }
  69   DOMPoint* P4() const { return mPoints[3]; }
  70
  71   DOMPoint* Point(uint32_t aIndex) const { return mPoints[aIndex]; }
  72
  73   bool WriteStructuredClone(JSContext* aCx,
  74                             JSStructuredCloneWriter* aWriter) const;
  75
  76   static already_AddRefed<DOMQuad> ReadStructuredClone(
  77       JSContext* aCx, nsIGlobalObject* aGlobal,
  78       JSStructuredCloneReader* aReader);
  79
  80  protected:
  81   void GetHorizontalMinMax(double* aX1, double* aX2) const;
  82   void GetVerticalMinMax(double* aY1, double* aY2) const;
  83
  84   nsCOMPtr<nsISupports> mParent;
  85   RefPtr<DOMPoint> mPoints[4];
  86 };
  87
  88 }  // namespace dom
  89 }  // namespace mozilla
  90
  91 #endif /*MOZILLA_DOMRECT_H_*/