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       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             : #include "mozilla/dom/DOMQuad.h"
       8             : 
       9             : #include "mozilla/dom/DOMQuadBinding.h"
      10             : #include "mozilla/dom/DOMPoint.h"
      11             : #include "mozilla/dom/DOMRect.h"
      12             : #include <algorithm>
      13             : 
      14             : using namespace mozilla;
      15             : using namespace mozilla::dom;
      16             : using namespace mozilla::gfx;
      17             : 
      18           0 : NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMQuad, mParent, mBounds, mPoints[0],
      19             :                                       mPoints[1], mPoints[2], mPoints[3])
      20             : 
      21           0 : NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DOMQuad, AddRef)
      22           0 : NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DOMQuad, Release)
      23             : 
      24           0 : DOMQuad::DOMQuad(nsISupports* aParent, CSSPoint aPoints[4])
      25           0 :   : mParent(aParent)
      26             : {
      27           0 :   for (uint32_t i = 0; i < 4; ++i) {
      28           0 :     mPoints[i] = new DOMPoint(aParent, aPoints[i].x, aPoints[i].y);
      29             :   }
      30           0 : }
      31             : 
      32           0 : DOMQuad::DOMQuad(nsISupports* aParent)
      33           0 :   : mParent(aParent)
      34             : {
      35           0 : }
      36             : 
      37           0 : DOMQuad::~DOMQuad()
      38             : {
      39           0 : }
      40             : 
      41             : JSObject*
      42           0 : DOMQuad::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
      43             : {
      44           0 :   return DOMQuadBinding::Wrap(aCx, this, aGivenProto);
      45             : }
      46             : 
      47             : already_AddRefed<DOMQuad>
      48           0 : DOMQuad::Constructor(const GlobalObject& aGlobal,
      49             :                      const DOMPointInit& aP1,
      50             :                      const DOMPointInit& aP2,
      51             :                      const DOMPointInit& aP3,
      52             :                      const DOMPointInit& aP4,
      53             :                      ErrorResult& aRV)
      54             : {
      55           0 :   RefPtr<DOMQuad> obj = new DOMQuad(aGlobal.GetAsSupports());
      56           0 :   obj->mPoints[0] = DOMPoint::Constructor(aGlobal, aP1, aRV);
      57           0 :   obj->mPoints[1] = DOMPoint::Constructor(aGlobal, aP2, aRV);
      58           0 :   obj->mPoints[2] = DOMPoint::Constructor(aGlobal, aP3, aRV);
      59           0 :   obj->mPoints[3] = DOMPoint::Constructor(aGlobal, aP4, aRV);
      60           0 :   return obj.forget();
      61             : }
      62             : 
      63             : already_AddRefed<DOMQuad>
      64           0 : DOMQuad::Constructor(const GlobalObject& aGlobal, const DOMRectReadOnly& aRect,
      65             :                      ErrorResult& aRV)
      66             : {
      67           0 :   CSSPoint points[4];
      68           0 :   Float x = aRect.X(), y = aRect.Y(), w = aRect.Width(), h = aRect.Height();
      69           0 :   points[0] = CSSPoint(x, y);
      70           0 :   points[1] = CSSPoint(x + w, y);
      71           0 :   points[2] = CSSPoint(x + w, y + h);
      72           0 :   points[3] = CSSPoint(x, y + h);
      73           0 :   RefPtr<DOMQuad> obj = new DOMQuad(aGlobal.GetAsSupports(), points);
      74           0 :   return obj.forget();
      75             : }
      76             : 
      77             : class DOMQuad::QuadBounds final : public DOMRectReadOnly
      78             : {
      79             : public:
      80           0 :   explicit QuadBounds(DOMQuad* aQuad)
      81           0 :     : DOMRectReadOnly(aQuad->GetParentObject())
      82           0 :     , mQuad(aQuad)
      83           0 :   {}
      84             : 
      85           0 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(QuadBounds, DOMRectReadOnly)
      86             :   NS_DECL_ISUPPORTS_INHERITED
      87             : 
      88           0 :   virtual double X() const override
      89             :   {
      90             :     double x1, x2;
      91           0 :     GetHorizontalMinMax(&x1, &x2);
      92           0 :     return x1;
      93             :   }
      94           0 :   virtual double Y() const override
      95             :   {
      96             :     double y1, y2;
      97           0 :     GetVerticalMinMax(&y1, &y2);
      98           0 :     return y1;
      99             :   }
     100           0 :   virtual double Width() const override
     101             :   {
     102             :     double x1, x2;
     103           0 :     GetHorizontalMinMax(&x1, &x2);
     104           0 :     return x2 - x1;
     105             :   }
     106           0 :   virtual double Height() const override
     107             :   {
     108             :     double y1, y2;
     109           0 :     GetVerticalMinMax(&y1, &y2);
     110           0 :     return y2 - y1;
     111             :   }
     112             : 
     113           0 :   void GetHorizontalMinMax(double* aX1, double* aX2) const
     114             :   {
     115             :     double x1, x2;
     116           0 :     x1 = x2 = mQuad->Point(0)->X();
     117           0 :     for (uint32_t i = 1; i < 4; ++i) {
     118           0 :       double x = mQuad->Point(i)->X();
     119           0 :       x1 = std::min(x1, x);
     120           0 :       x2 = std::max(x2, x);
     121             :     }
     122           0 :     *aX1 = x1;
     123           0 :     *aX2 = x2;
     124           0 :   }
     125             : 
     126           0 :   void GetVerticalMinMax(double* aY1, double* aY2) const
     127             :   {
     128             :     double y1, y2;
     129           0 :     y1 = y2 = mQuad->Point(0)->Y();
     130           0 :     for (uint32_t i = 1; i < 4; ++i) {
     131           0 :       double y = mQuad->Point(i)->Y();
     132           0 :       y1 = std::min(y1, y);
     133           0 :       y2 = std::max(y2, y);
     134             :     }
     135           0 :     *aY1 = y1;
     136           0 :     *aY2 = y2;
     137           0 :   }
     138             : 
     139             : protected:
     140           0 :   virtual ~QuadBounds() {}
     141             : 
     142             :   RefPtr<DOMQuad> mQuad;
     143             : };
     144             : 
     145           0 : NS_IMPL_CYCLE_COLLECTION_INHERITED(DOMQuad::QuadBounds, DOMRectReadOnly, mQuad)
     146             : 
     147           0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMQuad::QuadBounds)
     148           0 : NS_INTERFACE_MAP_END_INHERITING(DOMRectReadOnly)
     149             : 
     150           0 : NS_IMPL_ADDREF_INHERITED(DOMQuad::QuadBounds, DOMRectReadOnly)
     151           0 : NS_IMPL_RELEASE_INHERITED(DOMQuad::QuadBounds, DOMRectReadOnly)
     152             : 
     153             : DOMRectReadOnly*
     154           0 : DOMQuad::Bounds() const
     155             : {
     156           0 :   if (!mBounds) {
     157           0 :     mBounds = new QuadBounds(const_cast<DOMQuad*>(this));
     158             :   }
     159           0 :   return mBounds;
     160             : }