127 lines
3.9 KiB
C++
127 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/DOMRect.h"
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#include "nsPresContext.h"
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#include "mozilla/dom/DOMRectListBinding.h"
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#include "mozilla/dom/DOMRectBinding.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectReadOnly, mParent)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectReadOnly)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectReadOnly)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRectReadOnly)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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JSObject*
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DOMRectReadOnly::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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MOZ_ASSERT(mParent);
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return DOMRectReadOnlyBinding::Wrap(aCx, this, aGivenProto);
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}
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// -----------------------------------------------------------------------------
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NS_IMPL_ISUPPORTS_INHERITED(DOMRect, DOMRectReadOnly, nsIDOMClientRect)
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#define FORWARD_GETTER(_name) \
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NS_IMETHODIMP \
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DOMRect::Get ## _name(float* aResult) \
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{ \
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*aResult = float(_name()); \
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return NS_OK; \
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}
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FORWARD_GETTER(Left)
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FORWARD_GETTER(Top)
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FORWARD_GETTER(Right)
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FORWARD_GETTER(Bottom)
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FORWARD_GETTER(Width)
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FORWARD_GETTER(Height)
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JSObject*
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DOMRect::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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MOZ_ASSERT(mParent);
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return DOMRectBinding::Wrap(aCx, this, aGivenProto);
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}
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already_AddRefed<DOMRect>
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DOMRect::Constructor(const GlobalObject& aGlobal, ErrorResult& aRV)
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{
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RefPtr<DOMRect> obj =
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new DOMRect(aGlobal.GetAsSupports(), 0.0, 0.0, 0.0, 0.0);
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return obj.forget();
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}
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already_AddRefed<DOMRect>
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DOMRect::Constructor(const GlobalObject& aGlobal, double aX, double aY,
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double aWidth, double aHeight, ErrorResult& aRV)
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{
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RefPtr<DOMRect> obj =
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new DOMRect(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight);
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return obj.forget();
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}
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// -----------------------------------------------------------------------------
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMRectList, mParent, mArray)
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NS_INTERFACE_TABLE_HEAD(DOMRectList)
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NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
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NS_INTERFACE_TABLE(DOMRectList, nsIDOMClientRectList)
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NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DOMRectList)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectList)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectList)
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NS_IMETHODIMP
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DOMRectList::GetLength(uint32_t* aLength)
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{
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*aLength = Length();
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return NS_OK;
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}
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NS_IMETHODIMP
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DOMRectList::Item(uint32_t aIndex, nsIDOMClientRect** aReturn)
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{
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NS_IF_ADDREF(*aReturn = Item(aIndex));
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return NS_OK;
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}
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JSObject*
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DOMRectList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
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{
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return mozilla::dom::DOMRectListBinding::Wrap(cx, this, aGivenProto);
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}
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static double
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RoundFloat(double aValue)
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{
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return floor(aValue + 0.5);
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}
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void
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DOMRect::SetLayoutRect(const nsRect& aLayoutRect)
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{
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double scale = 65536.0;
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// Round to the nearest 1/scale units. We choose scale so it can be represented
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// exactly by machine floating point.
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double scaleInv = 1/scale;
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double t2pScaled = scale/nsPresContext::AppUnitsPerCSSPixel();
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double x = RoundFloat(aLayoutRect.x*t2pScaled)*scaleInv;
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double y = RoundFloat(aLayoutRect.y*t2pScaled)*scaleInv;
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SetRect(x, y, RoundFloat(aLayoutRect.XMost()*t2pScaled)*scaleInv - x,
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RoundFloat(aLayoutRect.YMost()*t2pScaled)*scaleInv - y);
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}
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