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content/base/src/DOMRect.cpp@6474c204b198 (annotated)

content/base/src/DOMRect.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#include "mozilla/dom/DOMRect.h"
michael@0	7
michael@0	8	#include "nsPresContext.h"
michael@0	9	#include "mozilla/dom/DOMRectListBinding.h"
michael@0	10	#include "mozilla/dom/DOMRectBinding.h"
michael@0	11
michael@0	12	using namespace mozilla;
michael@0	13	using namespace mozilla::dom;
michael@0	14
michael@0	15	NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(DOMRectReadOnly, mParent)
michael@0	16	NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectReadOnly)
michael@0	17	NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectReadOnly)
michael@0	18	NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMRectReadOnly)
michael@0	19	NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
michael@0	20	NS_INTERFACE_MAP_ENTRY(nsISupports)
michael@0	21	NS_INTERFACE_MAP_END
michael@0	22
michael@0	23	JSObject*
michael@0	24	DOMRectReadOnly::WrapObject(JSContext* aCx)
michael@0	25	{
michael@0	26	MOZ_ASSERT(mParent);
michael@0	27	return DOMRectReadOnlyBinding::Wrap(aCx, this);
michael@0	28	}
michael@0	29
michael@0	30	// -----------------------------------------------------------------------------
michael@0	31
michael@0	32	NS_IMPL_ISUPPORTS_INHERITED(DOMRect, DOMRectReadOnly, nsIDOMClientRect)
michael@0	33
michael@0	34	#define FORWARD_GETTER(_name) \
michael@0	35	NS_IMETHODIMP \
michael@0	36	DOMRect::Get ## _name(float* aResult) \
michael@0	37	{ \
michael@0	38	*aResult = float(_name()); \
michael@0	39	return NS_OK; \
michael@0	40	}
michael@0	41
michael@0	42	FORWARD_GETTER(Left)
michael@0	43	FORWARD_GETTER(Top)
michael@0	44	FORWARD_GETTER(Right)
michael@0	45	FORWARD_GETTER(Bottom)
michael@0	46	FORWARD_GETTER(Width)
michael@0	47	FORWARD_GETTER(Height)
michael@0	48
michael@0	49	JSObject*
michael@0	50	DOMRect::WrapObject(JSContext* aCx)
michael@0	51	{
michael@0	52	MOZ_ASSERT(mParent);
michael@0	53	return DOMRectBinding::Wrap(aCx, this);
michael@0	54	}
michael@0	55
michael@0	56	already_AddRefed<DOMRect>
michael@0	57	DOMRect::Constructor(const GlobalObject& aGlobal, ErrorResult& aRV)
michael@0	58	{
michael@0	59	nsRefPtr<DOMRect> obj =
michael@0	60	new DOMRect(aGlobal.GetAsSupports(), 0.0, 0.0, 0.0, 0.0);
michael@0	61	return obj.forget();
michael@0	62	}
michael@0	63
michael@0	64	already_AddRefed<DOMRect>
michael@0	65	DOMRect::Constructor(const GlobalObject& aGlobal, double aX, double aY,
michael@0	66	double aWidth, double aHeight, ErrorResult& aRV)
michael@0	67	{
michael@0	68	nsRefPtr<DOMRect> obj =
michael@0	69	new DOMRect(aGlobal.GetAsSupports(), aX, aY, aWidth, aHeight);
michael@0	70	return obj.forget();
michael@0	71	}
michael@0	72
michael@0	73	// -----------------------------------------------------------------------------
michael@0	74
michael@0	75	NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(DOMRectList, mParent, mArray)
michael@0	76
michael@0	77	NS_INTERFACE_TABLE_HEAD(DOMRectList)
michael@0	78	NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
michael@0	79	NS_INTERFACE_TABLE(DOMRectList, nsIDOMClientRectList)
michael@0	80	NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DOMRectList)
michael@0	81	NS_INTERFACE_MAP_END
michael@0	82
michael@0	83	NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMRectList)
michael@0	84	NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMRectList)
michael@0	85
michael@0	86
michael@0	87	NS_IMETHODIMP
michael@0	88	DOMRectList::GetLength(uint32_t* aLength)
michael@0	89	{
michael@0	90	*aLength = Length();
michael@0	91	return NS_OK;
michael@0	92	}
michael@0	93
michael@0	94	NS_IMETHODIMP
michael@0	95	DOMRectList::Item(uint32_t aIndex, nsIDOMClientRect** aReturn)
michael@0	96	{
michael@0	97	NS_IF_ADDREF(*aReturn = Item(aIndex));
michael@0	98	return NS_OK;
michael@0	99	}
michael@0	100
michael@0	101	JSObject*
michael@0	102	DOMRectList::WrapObject(JSContext *cx)
michael@0	103	{
michael@0	104	return mozilla::dom::DOMRectListBinding::Wrap(cx, this);
michael@0	105	}
michael@0	106
michael@0	107	static double
michael@0	108	RoundFloat(double aValue)
michael@0	109	{
michael@0	110	return floor(aValue + 0.5);
michael@0	111	}
michael@0	112
michael@0	113	void
michael@0	114	DOMRect::SetLayoutRect(const nsRect& aLayoutRect)
michael@0	115	{
michael@0	116	double scale = 65536.0;
michael@0	117	// Round to the nearest 1/scale units. We choose scale so it can be represented
michael@0	118	// exactly by machine floating point.
michael@0	119	double scaleInv = 1/scale;
michael@0	120	double t2pScaled = scale/nsPresContext::AppUnitsPerCSSPixel();
michael@0	121	double x = RoundFloat(aLayoutRect.x*t2pScaled)*scaleInv;
michael@0	122	double y = RoundFloat(aLayoutRect.y*t2pScaled)*scaleInv;
michael@0	123	SetRect(x, y, RoundFloat(aLayoutRect.XMost()*t2pScaled)*scaleInv - x,
michael@0	124	RoundFloat(aLayoutRect.YMost()*t2pScaled)*scaleInv - y);
michael@0	125	}