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::dom {
  28
  29 class DOMRectReadOnly;
  30 class DOMPoint;
  31 class GlobalObject;
  32 struct DOMPointInit;
  33 struct DOMQuadInit;
  34 struct DOMRectInit;
  35
  36 class DOMQuad final : public nsWrapperCache {
  37   ~DOMQuad();
  38
  39  public:
  40   DOMQuad(nsISupports* aParent, CSSPoint aPoints[4]);
  41   explicit DOMQuad(nsISupports* aParent);
  42
  43   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(DOMQuad)
  44   NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(DOMQuad)
  45
  46   nsISupports* GetParentObject() const { return mParent; }
  47   virtual JSObject* WrapObject(JSContext* aCx,
  48                                JS::Handle<JSObject*> aGivenProto) override;
  49
  50   static already_AddRefed<DOMQuad> FromRect(const GlobalObject& aGlobal,
  51                                             const DOMRectInit& aInit);
  52
  53   static already_AddRefed<DOMQuad> FromQuad(const GlobalObject& aGlobal,
  54                                             const DOMQuadInit& aInit);
  55
  56   static already_AddRefed<DOMQuad> Constructor(const GlobalObject& aGlobal,
  57                                                const DOMPointInit& aP1,
  58                                                const DOMPointInit& aP2,
  59                                                const DOMPointInit& aP3,
  60                                                const DOMPointInit& aP4);
  61   static already_AddRefed<DOMQuad> Constructor(const GlobalObject& aGlobal,
  62                                                const DOMRectReadOnly& aRect);
  63
  64   already_AddRefed<DOMRectReadOnly> GetBounds() const;
  65   DOMPoint* P1() const { return mPoints[0]; }
  66   DOMPoint* P2() const { return mPoints[1]; }
  67   DOMPoint* P3() const { return mPoints[2]; }
  68   DOMPoint* P4() const { return mPoints[3]; }
  69
  70   DOMPoint* Point(uint32_t aIndex) const { return mPoints[aIndex]; }
  71
  72   bool WriteStructuredClone(JSContext* aCx,
  73                             JSStructuredCloneWriter* aWriter) const;
  74
  75   static already_AddRefed<DOMQuad> ReadStructuredClone(
  76       JSContext* aCx, nsIGlobalObject* aGlobal,
  77       JSStructuredCloneReader* aReader);
  78
  79  protected:
  80   void GetHorizontalMinMax(double* aX1, double* aX2) const;
  81   void GetVerticalMinMax(double* aY1, double* aY2) const;
  82
  83   nsCOMPtr<nsISupports> mParent;
  84   RefPtr<DOMPoint> mPoints[4];
  85 };
  86
  87 }  // namespace mozilla::dom
  88
  89 #endif /*MOZILLA_DOMRECT_H_*/