forked from mirrors/gecko-dev
ad01a10a3b
Note that this patch only transforms the use of the nsDataHashtable type alias to a directly equivalent use of nsTHashMap. It does not change the specification of the hash key type to make use of the key class deduction that nsTHashMap allows for in some cases. That can be done in a separate step, but requires more attention. Differential Revision: https://phabricator.services.mozilla.com/D106008
82 lines
2.8 KiB
C++
82 lines
2.8 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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*/
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/* Description of TouchManager class.
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* Incapsulate code related with work of touch events.
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*/
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#ifndef TouchManager_h_
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#define TouchManager_h_
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#include "mozilla/BasicEvents.h"
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#include "mozilla/dom/Touch.h"
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#include "mozilla/TouchEvents.h"
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#include "nsRefPtrHashtable.h"
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namespace mozilla {
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class PresShell;
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class TouchManager {
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public:
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// Initialize and release static variables
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static void InitializeStatics();
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static void ReleaseStatics();
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void Init(PresShell* aPresShell, dom::Document* aDocument);
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void Destroy();
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// Perform hit test and setup the event targets for touchstart. Other touch
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// events are dispatched to the same target as touchstart.
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static nsIFrame* SetupTarget(WidgetTouchEvent* aEvent, nsIFrame* aFrame);
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/**
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* This function checks whether all touch points hit elements in the same
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* document. If not, we try to find its cross document parent which is in the
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* same document of the existing target as the event target. We mark the
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* touch point as suppressed if can't find it. The suppressed touch points are
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* removed in TouchManager::PreHandleEvent so that we don't dispatch them to
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* content.
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*
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* @param aEvent A touch event to be checked.
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*
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* @return The targeted frame of aEvent.
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*/
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static nsIFrame* SuppressInvalidPointsAndGetTargetedFrame(
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WidgetTouchEvent* aEvent);
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bool PreHandleEvent(mozilla::WidgetEvent* aEvent, nsEventStatus* aStatus,
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bool& aTouchIsNew,
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nsCOMPtr<nsIContent>& aCurrentEventContent);
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static already_AddRefed<nsIContent> GetAnyCapturedTouchTarget();
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static bool HasCapturedTouch(int32_t aId);
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static already_AddRefed<dom::Touch> GetCapturedTouch(int32_t aId);
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static bool ShouldConvertTouchToPointer(const dom::Touch* aTouch,
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const WidgetTouchEvent* aEvent);
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private:
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void EvictTouches(dom::Document* aLimitToDocument = nullptr);
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static void EvictTouchPoint(RefPtr<dom::Touch>& aTouch,
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dom::Document* aLimitToDocument);
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static void AppendToTouchList(WidgetTouchEvent::TouchArrayBase* aTouchList);
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RefPtr<PresShell> mPresShell;
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RefPtr<dom::Document> mDocument;
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struct TouchInfo {
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RefPtr<mozilla::dom::Touch> mTouch;
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nsCOMPtr<nsIContent> mNonAnonymousTarget;
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bool mConvertToPointer;
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};
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static nsTHashMap<nsUint32HashKey, TouchInfo>* sCaptureTouchList;
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static layers::LayersId sCaptureTouchLayersId;
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};
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} // namespace mozilla
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#endif /* !defined(TouchManager_h_) */
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