104 lines
3.9 KiB
C++
104 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef mozilla_layers_APZEventState_h
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#define mozilla_layers_APZEventState_h
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#include <stdint.h>
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#include "FrameMetrics.h" // for ScrollableLayerGuid
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#include "Units.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/Function.h"
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#include "mozilla/layers/GeckoContentController.h" // for APZStateChange
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#include "mozilla/RefPtr.h"
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#include "nsCOMPtr.h"
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#include "nsISupportsImpl.h" // for NS_INLINE_DECL_REFCOUNTING
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#include "nsIWeakReferenceUtils.h" // for nsWeakPtr
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template <class> class nsCOMPtr;
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class nsIDocument;
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class nsIPresShell;
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class nsIWidget;
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namespace mozilla {
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namespace layers {
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class ActiveElementManager;
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typedef function<void(const ScrollableLayerGuid&,
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uint64_t /* input block id */,
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bool /* prevent default */)>
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ContentReceivedInputBlockCallback;
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/**
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* A content-side component that keeps track of state for handling APZ
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* gestures and sending APZ notifications.
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*/
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class APZEventState {
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typedef GeckoContentController::APZStateChange APZStateChange;
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typedef FrameMetrics::ViewID ViewID;
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public:
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APZEventState(nsIWidget* aWidget,
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ContentReceivedInputBlockCallback&& aCallback);
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NS_INLINE_DECL_REFCOUNTING(APZEventState);
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void ProcessSingleTap(const CSSPoint& aPoint,
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const CSSToLayoutDeviceScale& aScale,
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Modifiers aModifiers,
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const ScrollableLayerGuid& aGuid,
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int32_t aClickCount);
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void ProcessLongTap(const nsCOMPtr<nsIPresShell>& aUtils,
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const CSSPoint& aPoint,
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const CSSToLayoutDeviceScale& aScale,
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Modifiers aModifiers,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId);
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void ProcessLongTapUp(const nsCOMPtr<nsIPresShell>& aPresShell,
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const CSSPoint& aPoint,
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const CSSToLayoutDeviceScale& aScale,
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Modifiers aModifiers);
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void ProcessTouchEvent(const WidgetTouchEvent& aEvent,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId,
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nsEventStatus aApzResponse,
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nsEventStatus aContentResponse);
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void ProcessWheelEvent(const WidgetWheelEvent& aEvent,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId);
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void ProcessMouseEvent(const WidgetMouseEvent& aEvent,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId);
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void ProcessAPZStateChange(ViewID aViewId,
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APZStateChange aChange,
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int aArg);
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void ProcessClusterHit();
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private:
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~APZEventState();
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bool SendPendingTouchPreventedResponse(bool aPreventDefault);
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bool FireContextmenuEvents(const nsCOMPtr<nsIPresShell>& aPresShell,
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const CSSPoint& aPoint,
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const CSSToLayoutDeviceScale& aScale,
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Modifiers aModifiers,
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const nsCOMPtr<nsIWidget>& aWidget);
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already_AddRefed<nsIWidget> GetWidget() const;
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private:
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nsWeakPtr mWidget;
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RefPtr<ActiveElementManager> mActiveElementManager;
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ContentReceivedInputBlockCallback mContentReceivedInputBlockCallback;
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bool mPendingTouchPreventedResponse;
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ScrollableLayerGuid mPendingTouchPreventedGuid;
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uint64_t mPendingTouchPreventedBlockId;
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bool mEndTouchIsClick;
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bool mTouchEndCancelled;
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int32_t mLastTouchIdentifier;
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};
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} // namespace layers
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} // namespace mozilla
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#endif /* mozilla_layers_APZEventState_h */
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