dom/events/NotifyPaintEvent.cpp@97036ab72558
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.
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #include "base/basictypes.h"
7 #include "ipc/IPCMessageUtils.h"
8 #include "mozilla/dom/DOMRect.h"
9 #include "mozilla/dom/NotifyPaintEvent.h"
10 #include "mozilla/dom/PaintRequest.h"
11 #include "mozilla/GfxMessageUtils.h"
12 #include "nsContentUtils.h"
14 namespace mozilla {
15 namespace dom {
17 NotifyPaintEvent::NotifyPaintEvent(EventTarget* aOwner,
18 nsPresContext* aPresContext,
19 WidgetEvent* aEvent,
20 uint32_t aEventType,
21 nsInvalidateRequestList* aInvalidateRequests)
22 : Event(aOwner, aPresContext, aEvent)
23 {
24 if (mEvent) {
25 mEvent->message = aEventType;
26 }
27 if (aInvalidateRequests) {
28 mInvalidateRequests.MoveElementsFrom(aInvalidateRequests->mRequests);
29 }
30 }
32 NS_INTERFACE_MAP_BEGIN(NotifyPaintEvent)
33 NS_INTERFACE_MAP_ENTRY(nsIDOMNotifyPaintEvent)
34 NS_INTERFACE_MAP_END_INHERITING(Event)
36 NS_IMPL_ADDREF_INHERITED(NotifyPaintEvent, Event)
37 NS_IMPL_RELEASE_INHERITED(NotifyPaintEvent, Event)
39 nsRegion
40 NotifyPaintEvent::GetRegion()
41 {
42 nsRegion r;
43 if (!nsContentUtils::IsCallerChrome()) {
44 return r;
45 }
46 for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
47 r.Or(r, mInvalidateRequests[i].mRect);
48 r.SimplifyOutward(10);
49 }
50 return r;
51 }
53 NS_IMETHODIMP
54 NotifyPaintEvent::GetBoundingClientRect(nsIDOMClientRect** aResult)
55 {
56 *aResult = BoundingClientRect().take();
57 return NS_OK;
58 }
60 already_AddRefed<DOMRect>
61 NotifyPaintEvent::BoundingClientRect()
62 {
63 nsRefPtr<DOMRect> rect = new DOMRect(ToSupports(this));
65 if (mPresContext) {
66 rect->SetLayoutRect(GetRegion().GetBounds());
67 }
69 return rect.forget();
70 }
72 NS_IMETHODIMP
73 NotifyPaintEvent::GetClientRects(nsIDOMClientRectList** aResult)
74 {
75 *aResult = ClientRects().take();
76 return NS_OK;
77 }
79 already_AddRefed<DOMRectList>
80 NotifyPaintEvent::ClientRects()
81 {
82 nsISupports* parent = ToSupports(this);
83 nsRefPtr<DOMRectList> rectList = new DOMRectList(parent);
85 nsRegion r = GetRegion();
86 nsRegionRectIterator iter(r);
87 for (const nsRect* rgnRect = iter.Next(); rgnRect; rgnRect = iter.Next()) {
88 nsRefPtr<DOMRect> rect = new DOMRect(parent);
90 rect->SetLayoutRect(*rgnRect);
91 rectList->Append(rect);
92 }
94 return rectList.forget();
95 }
97 NS_IMETHODIMP
98 NotifyPaintEvent::GetPaintRequests(nsISupports** aResult)
99 {
100 nsRefPtr<PaintRequestList> requests = PaintRequests();
101 requests.forget(aResult);
102 return NS_OK;
103 }
105 already_AddRefed<PaintRequestList>
106 NotifyPaintEvent::PaintRequests()
107 {
108 Event* parent = this;
109 nsRefPtr<PaintRequestList> requests = new PaintRequestList(parent);
111 if (nsContentUtils::IsCallerChrome()) {
112 for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
113 nsRefPtr<PaintRequest> r = new PaintRequest(parent);
114 r->SetRequest(mInvalidateRequests[i]);
115 requests->Append(r);
116 }
117 }
119 return requests.forget();
120 }
122 NS_IMETHODIMP_(void)
123 NotifyPaintEvent::Serialize(IPC::Message* aMsg,
124 bool aSerializeInterfaceType)
125 {
126 if (aSerializeInterfaceType) {
127 IPC::WriteParam(aMsg, NS_LITERAL_STRING("notifypaintevent"));
128 }
130 Event::Serialize(aMsg, false);
132 uint32_t length = mInvalidateRequests.Length();
133 IPC::WriteParam(aMsg, length);
134 for (uint32_t i = 0; i < length; ++i) {
135 IPC::WriteParam(aMsg, mInvalidateRequests[i].mRect);
136 IPC::WriteParam(aMsg, mInvalidateRequests[i].mFlags);
137 }
138 }
140 NS_IMETHODIMP_(bool)
141 NotifyPaintEvent::Deserialize(const IPC::Message* aMsg, void** aIter)
142 {
143 NS_ENSURE_TRUE(Event::Deserialize(aMsg, aIter), false);
145 uint32_t length = 0;
146 NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &length), false);
147 mInvalidateRequests.SetCapacity(length);
148 for (uint32_t i = 0; i < length; ++i) {
149 nsInvalidateRequestList::Request req;
150 NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &req.mRect), false);
151 NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &req.mFlags), false);
152 mInvalidateRequests.AppendElement(req);
153 }
155 return true;
156 }
158 } // namespace dom
159 } // namespace mozilla
161 using namespace mozilla;
162 using namespace mozilla::dom;
164 nsresult
165 NS_NewDOMNotifyPaintEvent(nsIDOMEvent** aInstancePtrResult,
166 EventTarget* aOwner,
167 nsPresContext* aPresContext,
168 WidgetEvent* aEvent,
169 uint32_t aEventType,
170 nsInvalidateRequestList* aInvalidateRequests)
171 {
172 NotifyPaintEvent* it = new NotifyPaintEvent(aOwner, aPresContext, aEvent,
173 aEventType, aInvalidateRequests);
174 NS_ADDREF(it);
175 *aInstancePtrResult = static_cast<Event*>(it);
176 return NS_OK;
177 }
