1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/base/src/DOMRect.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,125 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/dom/DOMRect.h"
1.10 +
1.11 +#include "nsPresContext.h"
1.12 +#include "mozilla/dom/DOMRectListBinding.h"
1.13 +#include "mozilla/dom/DOMRectBinding.h"
1.14 +
1.15 +using namespace mozilla;
1.16 +using namespace mozilla::dom;
1.17 +
1.18 +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(DOMRectReadOnly, mParent)
1.19 +NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectReadOnly)
1.20 +NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectReadOnly)
1.21 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRectReadOnly)
1.22 + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
1.23 + NS_INTERFACE_MAP_ENTRY(nsISupports)
1.24 +NS_INTERFACE_MAP_END
1.25 +
1.26 +JSObject*
1.27 +DOMRectReadOnly::WrapObject(JSContext* aCx)
1.28 +{
1.29 + MOZ_ASSERT(mParent);
1.30 + return DOMRectReadOnlyBinding::Wrap(aCx, this);
1.31 +}
1.32 +
1.33 +// -----------------------------------------------------------------------------
1.34 +
1.35 +NS_IMPL_ISUPPORTS_INHERITED(DOMRect, DOMRectReadOnly, nsIDOMClientRect)
1.36 +
1.37 +#define FORWARD_GETTER(_name) \
1.38 + NS_IMETHODIMP \
1.39 + DOMRect::Get ## _name(float* aResult) \
1.40 + { \
1.41 + *aResult = float(_name()); \
1.42 + return NS_OK; \
1.43 + }
1.44 +
1.45 +FORWARD_GETTER(Left)
1.46 +FORWARD_GETTER(Top)
1.47 +FORWARD_GETTER(Right)
1.48 +FORWARD_GETTER(Bottom)
1.49 +FORWARD_GETTER(Width)
1.50 +FORWARD_GETTER(Height)
1.51 +
1.52 +JSObject*
1.53 +DOMRect::WrapObject(JSContext* aCx)
1.54 +{
1.55 + MOZ_ASSERT(mParent);
1.56 + return DOMRectBinding::Wrap(aCx, this);
1.57 +}
1.58 +
1.59 +already_AddRefed<DOMRect>
1.60 +DOMRect::Constructor(const GlobalObject& aGlobal, ErrorResult& aRV)
1.61 +{
1.62 + nsRefPtr<DOMRect> obj =
1.63 + new DOMRect(aGlobal.GetAsSupports(), 0.0, 0.0, 0.0, 0.0);
1.64 + return obj.forget();
1.65 +}
1.66 +
1.67 +already_AddRefed<DOMRect>
1.68 +DOMRect::Constructor(const GlobalObject& aGlobal, double aX, double aY,
1.69 + double aWidth, double aHeight, ErrorResult& aRV)
1.70 +{
1.71 + nsRefPtr<DOMRect> obj =
1.72 + new DOMRect(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight);
1.73 + return obj.forget();
1.74 +}
1.75 +
1.76 +// -----------------------------------------------------------------------------
1.77 +
1.78 +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(DOMRectList, mParent, mArray)
1.79 +
1.80 +NS_INTERFACE_TABLE_HEAD(DOMRectList)
1.81 + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
1.82 + NS_INTERFACE_TABLE(DOMRectList, nsIDOMClientRectList)
1.83 + NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DOMRectList)
1.84 +NS_INTERFACE_MAP_END
1.85 +
1.86 +NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectList)
1.87 +NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectList)
1.88 +
1.89 +
1.90 +NS_IMETHODIMP
1.91 +DOMRectList::GetLength(uint32_t* aLength)
1.92 +{
1.93 + *aLength = Length();
1.94 + return NS_OK;
1.95 +}
1.96 +
1.97 +NS_IMETHODIMP
1.98 +DOMRectList::Item(uint32_t aIndex, nsIDOMClientRect** aReturn)
1.99 +{
1.100 + NS_IF_ADDREF(*aReturn = Item(aIndex));
1.101 + return NS_OK;
1.102 +}
1.103 +
1.104 +JSObject*
1.105 +DOMRectList::WrapObject(JSContext *cx)
1.106 +{
1.107 + return mozilla::dom::DOMRectListBinding::Wrap(cx, this);
1.108 +}
1.109 +
1.110 +static double
1.111 +RoundFloat(double aValue)
1.112 +{
1.113 + return floor(aValue + 0.5);
1.114 +}
1.115 +
1.116 +void
1.117 +DOMRect::SetLayoutRect(const nsRect& aLayoutRect)
1.118 +{
1.119 + double scale = 65536.0;
1.120 + // Round to the nearest 1/scale units. We choose scale so it can be represented
1.121 + // exactly by machine floating point.
1.122 + double scaleInv = 1/scale;
1.123 + double t2pScaled = scale/nsPresContext::AppUnitsPerCSSPixel();
1.124 + double x = RoundFloat(aLayoutRect.x*t2pScaled)*scaleInv;
1.125 + double y = RoundFloat(aLayoutRect.y*t2pScaled)*scaleInv;
1.126 + SetRect(x, y, RoundFloat(aLayoutRect.XMost()*t2pScaled)*scaleInv - x,
1.127 + RoundFloat(aLayoutRect.YMost()*t2pScaled)*scaleInv - y);
1.128 +}
