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dom/events/NotifyPaintEvent.cpp@97036ab72558 (annotated)

dom/events/NotifyPaintEvent.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

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 "base/basictypes.h"
michael@0	7	#include "ipc/IPCMessageUtils.h"
michael@0	8	#include "mozilla/dom/DOMRect.h"
michael@0	9	#include "mozilla/dom/NotifyPaintEvent.h"
michael@0	10	#include "mozilla/dom/PaintRequest.h"
michael@0	11	#include "mozilla/GfxMessageUtils.h"
michael@0	12	#include "nsContentUtils.h"
michael@0	13
michael@0	14	namespace mozilla {
michael@0	15	namespace dom {
michael@0	16
michael@0	17	NotifyPaintEvent::NotifyPaintEvent(EventTarget* aOwner,
michael@0	18	nsPresContext* aPresContext,
michael@0	19	WidgetEvent* aEvent,
michael@0	20	uint32_t aEventType,
michael@0	21	nsInvalidateRequestList* aInvalidateRequests)
michael@0	22	: Event(aOwner, aPresContext, aEvent)
michael@0	23	{
michael@0	24	if (mEvent) {
michael@0	25	mEvent->message = aEventType;
michael@0	26	}
michael@0	27	if (aInvalidateRequests) {
michael@0	28	mInvalidateRequests.MoveElementsFrom(aInvalidateRequests->mRequests);
michael@0	29	}
michael@0	30	}
michael@0	31
michael@0	32	NS_INTERFACE_MAP_BEGIN(NotifyPaintEvent)
michael@0	33	NS_INTERFACE_MAP_ENTRY(nsIDOMNotifyPaintEvent)
michael@0	34	NS_INTERFACE_MAP_END_INHERITING(Event)
michael@0	35
michael@0	36	NS_IMPL_ADDREF_INHERITED(NotifyPaintEvent, Event)
michael@0	37	NS_IMPL_RELEASE_INHERITED(NotifyPaintEvent, Event)
michael@0	38
michael@0	39	nsRegion
michael@0	40	NotifyPaintEvent::GetRegion()
michael@0	41	{
michael@0	42	nsRegion r;
michael@0	43	if (!nsContentUtils::IsCallerChrome()) {
michael@0	44	return r;
michael@0	45	}
michael@0	46	for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
michael@0	47	r.Or(r, mInvalidateRequests[i].mRect);
michael@0	48	r.SimplifyOutward(10);
michael@0	49	}
michael@0	50	return r;
michael@0	51	}
michael@0	52
michael@0	53	NS_IMETHODIMP
michael@0	54	NotifyPaintEvent::GetBoundingClientRect(nsIDOMClientRect** aResult)
michael@0	55	{
michael@0	56	*aResult = BoundingClientRect().take();
michael@0	57	return NS_OK;
michael@0	58	}
michael@0	59
michael@0	60	already_AddRefed<DOMRect>
michael@0	61	NotifyPaintEvent::BoundingClientRect()
michael@0	62	{
michael@0	63	nsRefPtr<DOMRect> rect = new DOMRect(ToSupports(this));
michael@0	64
michael@0	65	if (mPresContext) {
michael@0	66	rect->SetLayoutRect(GetRegion().GetBounds());
michael@0	67	}
michael@0	68
michael@0	69	return rect.forget();
michael@0	70	}
michael@0	71
michael@0	72	NS_IMETHODIMP
michael@0	73	NotifyPaintEvent::GetClientRects(nsIDOMClientRectList** aResult)
michael@0	74	{
michael@0	75	*aResult = ClientRects().take();
michael@0	76	return NS_OK;
michael@0	77	}
michael@0	78
michael@0	79	already_AddRefed<DOMRectList>
michael@0	80	NotifyPaintEvent::ClientRects()
michael@0	81	{
michael@0	82	nsISupports* parent = ToSupports(this);
michael@0	83	nsRefPtr<DOMRectList> rectList = new DOMRectList(parent);
michael@0	84
michael@0	85	nsRegion r = GetRegion();
michael@0	86	nsRegionRectIterator iter(r);
michael@0	87	for (const nsRect* rgnRect = iter.Next(); rgnRect; rgnRect = iter.Next()) {
michael@0	88	nsRefPtr<DOMRect> rect = new DOMRect(parent);
michael@0	89
michael@0	90	rect->SetLayoutRect(*rgnRect);
michael@0	91	rectList->Append(rect);
michael@0	92	}
michael@0	93
michael@0	94	return rectList.forget();
michael@0	95	}
michael@0	96
michael@0	97	NS_IMETHODIMP
michael@0	98	NotifyPaintEvent::GetPaintRequests(nsISupports** aResult)
michael@0	99	{
michael@0	100	nsRefPtr<PaintRequestList> requests = PaintRequests();
michael@0	101	requests.forget(aResult);
michael@0	102	return NS_OK;
michael@0	103	}
michael@0	104
michael@0	105	already_AddRefed<PaintRequestList>
michael@0	106	NotifyPaintEvent::PaintRequests()
michael@0	107	{
michael@0	108	Event* parent = this;
michael@0	109	nsRefPtr<PaintRequestList> requests = new PaintRequestList(parent);
michael@0	110
michael@0	111	if (nsContentUtils::IsCallerChrome()) {
michael@0	112	for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
michael@0	113	nsRefPtr<PaintRequest> r = new PaintRequest(parent);
michael@0	114	r->SetRequest(mInvalidateRequests[i]);
michael@0	115	requests->Append(r);
michael@0	116	}
michael@0	117	}
michael@0	118
michael@0	119	return requests.forget();
michael@0	120	}
michael@0	121
michael@0	122	NS_IMETHODIMP_(void)
michael@0	123	NotifyPaintEvent::Serialize(IPC::Message* aMsg,
michael@0	124	bool aSerializeInterfaceType)
michael@0	125	{
michael@0	126	if (aSerializeInterfaceType) {
michael@0	127	IPC::WriteParam(aMsg, NS_LITERAL_STRING("notifypaintevent"));
michael@0	128	}
michael@0	129
michael@0	130	Event::Serialize(aMsg, false);
michael@0	131
michael@0	132	uint32_t length = mInvalidateRequests.Length();
michael@0	133	IPC::WriteParam(aMsg, length);
michael@0	134	for (uint32_t i = 0; i < length; ++i) {
michael@0	135	IPC::WriteParam(aMsg, mInvalidateRequests[i].mRect);
michael@0	136	IPC::WriteParam(aMsg, mInvalidateRequests[i].mFlags);
michael@0	137	}
michael@0	138	}
michael@0	139
michael@0	140	NS_IMETHODIMP_(bool)
michael@0	141	NotifyPaintEvent::Deserialize(const IPC::Message* aMsg, void** aIter)
michael@0	142	{
michael@0	143	NS_ENSURE_TRUE(Event::Deserialize(aMsg, aIter), false);
michael@0	144
michael@0	145	uint32_t length = 0;
michael@0	146	NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &length), false);
michael@0	147	mInvalidateRequests.SetCapacity(length);
michael@0	148	for (uint32_t i = 0; i < length; ++i) {
michael@0	149	nsInvalidateRequestList::Request req;
michael@0	150	NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &req.mRect), false);
michael@0	151	NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &req.mFlags), false);
michael@0	152	mInvalidateRequests.AppendElement(req);
michael@0	153	}
michael@0	154
michael@0	155	return true;
michael@0	156	}
michael@0	157
michael@0	158	} // namespace dom
michael@0	159	} // namespace mozilla
michael@0	160
michael@0	161	using namespace mozilla;
michael@0	162	using namespace mozilla::dom;
michael@0	163
michael@0	164	nsresult
michael@0	165	NS_NewDOMNotifyPaintEvent(nsIDOMEvent** aInstancePtrResult,
michael@0	166	EventTarget* aOwner,
michael@0	167	nsPresContext* aPresContext,
michael@0	168	WidgetEvent* aEvent,
michael@0	169	uint32_t aEventType,
michael@0	170	nsInvalidateRequestList* aInvalidateRequests)
michael@0	171	{
michael@0	172	NotifyPaintEvent* it = new NotifyPaintEvent(aOwner, aPresContext, aEvent,
michael@0	173	aEventType, aInvalidateRequests);
michael@0	174	NS_ADDREF(it);
michael@0	175	*aInstancePtrResult = static_cast<Event*>(it);
michael@0	176	return NS_OK;
michael@0	177	}