mirror of
https://github.com/roytam1/palemoon27.git
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wolfbeast
93 lines
3.3 KiB
C++
93 lines
3.3 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/layers/GoannaContentController.h" // for APZStateChange
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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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#include "nsRefPtr.h"
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template <class> class nsCOMPtr;
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class nsIDOMWindowUtils;
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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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struct ContentReceivedInputBlockCallback {
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public:
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NS_INLINE_DECL_REFCOUNTING(ContentReceivedInputBlockCallback);
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virtual void Run(const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId,
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bool aPreventDefault) const = 0;
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protected:
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virtual ~ContentReceivedInputBlockCallback() {}
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};
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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 GoannaContentController::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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const nsRefPtr<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 ScrollableLayerGuid& aGuid,
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float aPresShellResolution);
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void ProcessLongTap(const nsCOMPtr<nsIDOMWindowUtils>& aUtils,
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const CSSPoint& aPoint,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId,
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float aPresShellResolution);
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void ProcessLongTapUp(const CSSPoint& aPoint,
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const ScrollableLayerGuid& aGuid,
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float aPresShellResolution);
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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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void ProcessWheelEvent(const WidgetWheelEvent& aEvent,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId);
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void ProcessAPZStateChange(const nsCOMPtr<nsIDocument>& aDocument,
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ViewID aViewId,
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APZStateChange aChange,
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int aArg);
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private:
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~APZEventState();
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void SendPendingTouchPreventedResponse(bool aPreventDefault,
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const ScrollableLayerGuid& aGuid);
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already_AddRefed<nsIWidget> GetWidget() const;
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private:
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nsWeakPtr mWidget;
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nsRefPtr<ActiveElementManager> mActiveElementManager;
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nsRefPtr<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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};
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}
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}
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#endif /* mozilla_layers_APZEventState_h */
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