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-rw-r--r--dom/ipc/CoalescedMouseData.cpp83
1 files changed, 83 insertions, 0 deletions
diff --git a/dom/ipc/CoalescedMouseData.cpp b/dom/ipc/CoalescedMouseData.cpp
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+++ b/dom/ipc/CoalescedMouseData.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "base/basictypes.h"
+
+#include "CoalescedMouseData.h"
+#include "BrowserChild.h"
+
+#include "mozilla/PresShell.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "nsRefreshDriver.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+void CoalescedMouseData::Coalesce(const WidgetMouseEvent& aEvent,
+ const ScrollableLayerGuid& aGuid,
+ const uint64_t& aInputBlockId) {
+ if (IsEmpty()) {
+ mCoalescedInputEvent = MakeUnique<WidgetMouseEvent>(aEvent);
+ mGuid = aGuid;
+ mInputBlockId = aInputBlockId;
+ MOZ_ASSERT(!mCoalescedInputEvent->mCoalescedWidgetEvents);
+ } else {
+ MOZ_ASSERT(mGuid == aGuid);
+ MOZ_ASSERT(mInputBlockId == aInputBlockId);
+ MOZ_ASSERT(mCoalescedInputEvent->mModifiers == aEvent.mModifiers);
+ MOZ_ASSERT(mCoalescedInputEvent->mReason == aEvent.mReason);
+ MOZ_ASSERT(mCoalescedInputEvent->mInputSource == aEvent.mInputSource);
+ MOZ_ASSERT(mCoalescedInputEvent->mButton == aEvent.mButton);
+ MOZ_ASSERT(mCoalescedInputEvent->mButtons == aEvent.mButtons);
+ mCoalescedInputEvent->mTimeStamp = aEvent.mTimeStamp;
+ mCoalescedInputEvent->mRefPoint = aEvent.mRefPoint;
+ mCoalescedInputEvent->mPressure = aEvent.mPressure;
+ mCoalescedInputEvent->AssignPointerHelperData(aEvent);
+ }
+
+ if (aEvent.mMessage == eMouseMove) {
+ // PointerEvent::getCoalescedEvents is only applied to pointermove events.
+ if (!mCoalescedInputEvent->mCoalescedWidgetEvents) {
+ mCoalescedInputEvent->mCoalescedWidgetEvents =
+ new WidgetPointerEventHolder();
+ }
+ // Append current event in mCoalescedWidgetEvents. We use them to generate
+ // DOM events when content calls PointerEvent::getCoalescedEvents.
+ WidgetPointerEvent* event =
+ mCoalescedInputEvent->mCoalescedWidgetEvents->mEvents.AppendElement(
+ aEvent);
+
+ event->mMessage = ePointerMove;
+ event->mFlags.mBubbles = false;
+ event->mFlags.mCancelable = false;
+ }
+}
+
+bool CoalescedMouseData::CanCoalesce(const WidgetMouseEvent& aEvent,
+ const ScrollableLayerGuid& aGuid,
+ const uint64_t& aInputBlockId) {
+ MOZ_ASSERT(aEvent.mMessage == eMouseMove);
+ return !mCoalescedInputEvent ||
+ (!mCoalescedInputEvent->mFlags.mIsSynthesizedForTests &&
+ !aEvent.mFlags.mIsSynthesizedForTests &&
+ mCoalescedInputEvent->mModifiers == aEvent.mModifiers &&
+ mCoalescedInputEvent->mInputSource == aEvent.mInputSource &&
+ mCoalescedInputEvent->pointerId == aEvent.pointerId &&
+ mCoalescedInputEvent->mButton == aEvent.mButton &&
+ mCoalescedInputEvent->mButtons == aEvent.mButtons && mGuid == aGuid &&
+ mInputBlockId == aInputBlockId);
+}
+
+CoalescedMouseMoveFlusher::CoalescedMouseMoveFlusher(
+ BrowserChild* aBrowserChild)
+ : CoalescedInputFlusher(aBrowserChild) {}
+
+void CoalescedMouseMoveFlusher::WillRefresh(mozilla::TimeStamp aTime) {
+ MOZ_ASSERT(mRefreshDriver);
+ mBrowserChild->FlushAllCoalescedMouseData();
+ mBrowserChild->ProcessPendingCoalescedMouseDataAndDispatchEvents();
+}
+
+CoalescedMouseMoveFlusher::~CoalescedMouseMoveFlusher() { RemoveObserver(); }