forked from mirrors/gecko-dev
51 lines
2 KiB
C++
51 lines
2 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 "CoalescedWheelData.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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void
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CoalescedWheelData::Coalesce(const WidgetWheelEvent& aEvent,
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const ScrollableLayerGuid& aGuid,
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const uint64_t& aInputBlockId)
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{
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if (IsEmpty()) {
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mCoalescedInputEvent = MakeUnique<WidgetWheelEvent>(aEvent);
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mGuid = aGuid;
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mInputBlockId = aInputBlockId;
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} else {
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MOZ_ASSERT(mGuid == aGuid);
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MOZ_ASSERT(mInputBlockId == aInputBlockId);
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MOZ_ASSERT(mCoalescedInputEvent->mModifiers == aEvent.mModifiers);
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MOZ_ASSERT(mCoalescedInputEvent->mDeltaMode == aEvent.mDeltaMode);
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MOZ_ASSERT(mCoalescedInputEvent->mCanTriggerSwipe ==
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aEvent.mCanTriggerSwipe);
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mCoalescedInputEvent->mDeltaX += aEvent.mDeltaX;
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mCoalescedInputEvent->mDeltaY += aEvent.mDeltaY;
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mCoalescedInputEvent->mDeltaZ += aEvent.mDeltaZ;
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mCoalescedInputEvent->mLineOrPageDeltaX += aEvent.mLineOrPageDeltaX;
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mCoalescedInputEvent->mLineOrPageDeltaY += aEvent.mLineOrPageDeltaY;
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mCoalescedInputEvent->mTimeStamp = aEvent.mTimeStamp;
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}
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}
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bool
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CoalescedWheelData::CanCoalesce(const WidgetWheelEvent& aEvent,
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const ScrollableLayerGuid& aGuid,
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const uint64_t& aInputBlockId)
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{
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MOZ_ASSERT(!IsEmpty());
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return !mCoalescedInputEvent ||
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(mCoalescedInputEvent->mRefPoint == aEvent.mRefPoint &&
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mCoalescedInputEvent->mModifiers == aEvent.mModifiers &&
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mCoalescedInputEvent->mDeltaMode == aEvent.mDeltaMode &&
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mCoalescedInputEvent->mCanTriggerSwipe == aEvent.mCanTriggerSwipe &&
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mGuid == aGuid &&
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mInputBlockId == aInputBlockId);
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}
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