forked from mirrors/gecko-dev
ebd0469a04
For these objects, we have an `Append(Foo*)` method which is just a wrapper-function that appends to a `nsTArray<RefPtr<Foo>>`. As it happens, every callsite is passing in a local `RefPtr` variable that's no longer needed after the call to `Append`. It's slightly more performant to use move-semantics to directly transfer ownership of the existing reference from the local variable to the array, rather than having the reference count take one step forward and then one step back, as we were doing before this patch. Differential Revision: https://phabricator.services.mozilla.com/D210364
133 lines
4 KiB
C++
133 lines
4 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 "base/basictypes.h"
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#include "ipc/IPCMessageUtils.h"
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#include "mozilla/dom/DOMRect.h"
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#include "mozilla/dom/NotifyPaintEvent.h"
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#include "mozilla/dom/PaintRequest.h"
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#include "mozilla/GfxMessageUtils.h"
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#include "nsContentUtils.h"
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namespace mozilla::dom {
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NotifyPaintEvent::NotifyPaintEvent(
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EventTarget* aOwner, nsPresContext* aPresContext, WidgetEvent* aEvent,
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EventMessage aEventMessage, nsTArray<nsRect>* aInvalidateRequests,
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uint64_t aTransactionId, DOMHighResTimeStamp aTimeStamp)
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: Event(aOwner, aPresContext, aEvent) {
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if (mEvent) {
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mEvent->mMessage = aEventMessage;
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}
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if (aInvalidateRequests) {
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mInvalidateRequests.SwapElements(*aInvalidateRequests);
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}
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mTransactionId = aTransactionId;
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mTimeStamp = aTimeStamp;
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}
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nsRegion NotifyPaintEvent::GetRegion(SystemCallerGuarantee) {
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nsRegion r;
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for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
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r.Or(r, mInvalidateRequests[i]);
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r.SimplifyOutward(10);
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}
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return r;
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}
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already_AddRefed<DOMRect> NotifyPaintEvent::BoundingClientRect(
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SystemCallerGuarantee aGuarantee) {
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RefPtr<DOMRect> rect = new DOMRect(ToSupports(this));
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if (mPresContext) {
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rect->SetLayoutRect(GetRegion(aGuarantee).GetBounds());
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}
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return rect.forget();
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}
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already_AddRefed<DOMRectList> NotifyPaintEvent::ClientRects(
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SystemCallerGuarantee aGuarantee) {
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nsISupports* parent = ToSupports(this);
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RefPtr<DOMRectList> rectList = new DOMRectList(parent);
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nsRegion r = GetRegion(aGuarantee);
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for (auto iter = r.RectIter(); !iter.Done(); iter.Next()) {
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RefPtr<DOMRect> rect = new DOMRect(parent);
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rect->SetLayoutRect(iter.Get());
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rectList->Append(std::move(rect));
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}
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return rectList.forget();
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}
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already_AddRefed<PaintRequestList> NotifyPaintEvent::PaintRequests(
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SystemCallerGuarantee) {
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Event* parent = this;
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RefPtr<PaintRequestList> requests = new PaintRequestList(parent);
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for (uint32_t i = 0; i < mInvalidateRequests.Length(); ++i) {
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RefPtr<PaintRequest> r = new PaintRequest(parent);
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r->SetRequest(mInvalidateRequests[i]);
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requests->Append(std::move(r));
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}
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return requests.forget();
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}
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void NotifyPaintEvent::Serialize(IPC::MessageWriter* aWriter,
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bool aSerializeInterfaceType) {
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if (aSerializeInterfaceType) {
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IPC::WriteParam(aWriter, u"notifypaintevent"_ns);
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}
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Event::Serialize(aWriter, false);
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uint32_t length = mInvalidateRequests.Length();
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IPC::WriteParam(aWriter, length);
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for (uint32_t i = 0; i < length; ++i) {
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IPC::WriteParam(aWriter, mInvalidateRequests[i]);
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}
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}
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bool NotifyPaintEvent::Deserialize(IPC::MessageReader* aReader) {
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NS_ENSURE_TRUE(Event::Deserialize(aReader), false);
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uint32_t length = 0;
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NS_ENSURE_TRUE(IPC::ReadParam(aReader, &length), false);
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mInvalidateRequests.SetCapacity(length);
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for (uint32_t i = 0; i < length; ++i) {
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nsRect req;
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NS_ENSURE_TRUE(IPC::ReadParam(aReader, &req), false);
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mInvalidateRequests.AppendElement(req);
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}
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return true;
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}
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uint64_t NotifyPaintEvent::TransactionId(SystemCallerGuarantee) {
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return mTransactionId;
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}
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DOMHighResTimeStamp NotifyPaintEvent::PaintTimeStamp(SystemCallerGuarantee) {
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return mTimeStamp;
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}
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} // namespace mozilla::dom
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using namespace mozilla;
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using namespace mozilla::dom;
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already_AddRefed<NotifyPaintEvent> NS_NewDOMNotifyPaintEvent(
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EventTarget* aOwner, nsPresContext* aPresContext, WidgetEvent* aEvent,
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EventMessage aEventMessage, nsTArray<nsRect>* aInvalidateRequests,
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uint64_t aTransactionId, DOMHighResTimeStamp aTimeStamp) {
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RefPtr<NotifyPaintEvent> it =
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new NotifyPaintEvent(aOwner, aPresContext, aEvent, aEventMessage,
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aInvalidateRequests, aTransactionId, aTimeStamp);
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return it.forget();
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}
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