Line data    Source code

       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/DOMRect.h"
       8             : 
       9             : #include "nsPresContext.h"
      10             : #include "mozilla/dom/DOMRectListBinding.h"
      11             : #include "mozilla/dom/DOMRectBinding.h"
      12             : 
      13             : using namespace mozilla;
      14             : using namespace mozilla::dom;
      15             : 
      16           0 : NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectReadOnly, mParent)
      17           0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectReadOnly)
      18           0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectReadOnly)
      19           0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRectReadOnly)
      20           0 :   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
      21           0 :   NS_INTERFACE_MAP_ENTRY(nsISupports)
      22           0 : NS_INTERFACE_MAP_END
      23             : 
      24             : JSObject*
      25           0 : DOMRectReadOnly::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
      26             : {
      27           0 :   MOZ_ASSERT(mParent);
      28           0 :   return DOMRectReadOnlyBinding::Wrap(aCx, this, aGivenProto);
      29             : }
      30             : 
      31             : already_AddRefed<DOMRectReadOnly>
      32           0 : DOMRectReadOnly::Constructor(const GlobalObject& aGlobal, double aX, double aY,
      33             :                              double aWidth, double aHeight, ErrorResult& aRv)
      34             : {
      35             :   RefPtr<DOMRectReadOnly> obj =
      36           0 :     new DOMRectReadOnly(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight);
      37           0 :   return obj.forget();
      38             : }
      39             : 
      40             : // -----------------------------------------------------------------------------
      41             : 
      42             : JSObject*
      43           1 : DOMRect::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
      44             : {
      45           0 :   MOZ_ASSERT(mParent);
      46           1 :   return DOMRectBinding::Wrap(aCx, this, aGivenProto);
      47             : }
      48             : 
      49             : already_AddRefed<DOMRect>
      50           0 : DOMRect::Constructor(const GlobalObject& aGlobal, double aX, double aY,
      51             :                      double aWidth, double aHeight, ErrorResult& aRv)
      52             : {
      53             :   RefPtr<DOMRect> obj =
      54           0 :     new DOMRect(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight);
      55           0 :   return obj.forget();
      56             : }
      57             : 
      58             : // -----------------------------------------------------------------------------
      59             : 
      60           0 : NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectList, mParent, mArray)
      61             : 
      62           0 : NS_INTERFACE_TABLE_HEAD(DOMRectList)
      63           0 :   NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
      64           0 :   NS_INTERFACE_TABLE0(DOMRectList)
      65           0 :   NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DOMRectList)
      66           0 : NS_INTERFACE_MAP_END
      67             : 
      68           0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectList)
      69           0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectList)
      70             : 
      71             : JSObject*
      72           0 : DOMRectList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
      73             : {
      74           0 :   return mozilla::dom::DOMRectListBinding::Wrap(cx, this, aGivenProto);
      75             : }
      76             : 
      77             : static double
      78           4 : RoundFloat(double aValue)
      79             : {
      80           4 :   return floor(aValue + 0.5);
      81             : }
      82             : 
      83             : void
      84           1 : DOMRect::SetLayoutRect(const nsRect& aLayoutRect)
      85             : {
      86           1 :   double scale = 65536.0;
      87             :   // Round to the nearest 1/scale units. We choose scale so it can be represented
      88             :   // exactly by machine floating point.
      89           0 :   double scaleInv = 1/scale;
      90           0 :   double t2pScaled = scale/nsPresContext::AppUnitsPerCSSPixel();
      91           0 :   double x = RoundFloat(aLayoutRect.x*t2pScaled)*scaleInv;
      92           0 :   double y = RoundFloat(aLayoutRect.y*t2pScaled)*scaleInv;
      93           0 :   SetRect(x, y, RoundFloat(aLayoutRect.XMost()*t2pScaled)*scaleInv - x,
      94           0 :           RoundFloat(aLayoutRect.YMost()*t2pScaled)*scaleInv - y);
      95             : }