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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 "CoalescedWheelData.h"
#include "base/basictypes.h"
using namespace mozilla;
using namespace mozilla::dom;
void CoalescedWheelData::Coalesce(const WidgetWheelEvent& aEvent,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
if (IsEmpty()) {
mCoalescedInputEvent = MakeUnique<WidgetWheelEvent>(aEvent);
mGuid = aGuid;
mInputBlockId = aInputBlockId;
} else {
MOZ_ASSERT(mGuid == aGuid);
MOZ_ASSERT(mInputBlockId == aInputBlockId);
MOZ_ASSERT(mCoalescedInputEvent->mModifiers == aEvent.mModifiers);
MOZ_ASSERT(mCoalescedInputEvent->mDeltaMode == aEvent.mDeltaMode);
MOZ_ASSERT(mCoalescedInputEvent->mCanTriggerSwipe ==
aEvent.mCanTriggerSwipe);
mCoalescedInputEvent->mDeltaX += aEvent.mDeltaX;
mCoalescedInputEvent->mDeltaY += aEvent.mDeltaY;
mCoalescedInputEvent->mDeltaZ += aEvent.mDeltaZ;
mCoalescedInputEvent->mLineOrPageDeltaX += aEvent.mLineOrPageDeltaX;
mCoalescedInputEvent->mLineOrPageDeltaY += aEvent.mLineOrPageDeltaY;
mCoalescedInputEvent->mTimeStamp = aEvent.mTimeStamp;
}
}
bool CoalescedWheelData::CanCoalesce(const WidgetWheelEvent& aEvent,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
MOZ_ASSERT(!IsEmpty());
return !mCoalescedInputEvent ||
(mCoalescedInputEvent->mRefPoint == aEvent.mRefPoint &&
mCoalescedInputEvent->mModifiers == aEvent.mModifiers &&
mCoalescedInputEvent->mDeltaMode == aEvent.mDeltaMode &&
mCoalescedInputEvent->mCanTriggerSwipe == aEvent.mCanTriggerSwipe &&
mGuid == aGuid && mInputBlockId == aInputBlockId);
}
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