forked from mirrors/gecko-dev
b5c0f07b29
This patch doesn't change any user-observable behavior. StaticAutoPtr lets us remove a handful of explicit 'delete' statements, by making deletion happen automatically when these variables are cleared. Differential Revision: https://phabricator.services.mozilla.com/D127336
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
/* -*- 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/.
|
|
*/
|
|
|
|
/* Description of TouchManager class.
|
|
* Incapsulate code related with work of touch events.
|
|
*/
|
|
|
|
#ifndef TouchManager_h_
|
|
#define TouchManager_h_
|
|
|
|
#include "mozilla/BasicEvents.h"
|
|
#include "mozilla/dom/Touch.h"
|
|
#include "mozilla/StaticPtr.h"
|
|
#include "mozilla/TouchEvents.h"
|
|
#include "nsRefPtrHashtable.h"
|
|
|
|
namespace mozilla {
|
|
class PresShell;
|
|
|
|
class TouchManager {
|
|
public:
|
|
// Initialize and release static variables
|
|
static void InitializeStatics();
|
|
static void ReleaseStatics();
|
|
|
|
void Init(PresShell* aPresShell, dom::Document* aDocument);
|
|
void Destroy();
|
|
|
|
// Perform hit test and setup the event targets for touchstart. Other touch
|
|
// events are dispatched to the same target as touchstart.
|
|
static nsIFrame* SetupTarget(WidgetTouchEvent* aEvent, nsIFrame* aFrame);
|
|
|
|
/**
|
|
* This function checks whether all touch points hit elements in the same
|
|
* document. If not, we try to find its cross document parent which is in the
|
|
* same document of the existing target as the event target. We mark the
|
|
* touch point as suppressed if can't find it. The suppressed touch points are
|
|
* removed in TouchManager::PreHandleEvent so that we don't dispatch them to
|
|
* content.
|
|
*
|
|
* @param aEvent A touch event to be checked.
|
|
*
|
|
* @return The targeted frame of aEvent.
|
|
*/
|
|
static nsIFrame* SuppressInvalidPointsAndGetTargetedFrame(
|
|
WidgetTouchEvent* aEvent);
|
|
|
|
bool PreHandleEvent(mozilla::WidgetEvent* aEvent, nsEventStatus* aStatus,
|
|
bool& aTouchIsNew,
|
|
nsCOMPtr<nsIContent>& aCurrentEventContent);
|
|
|
|
static already_AddRefed<nsIContent> GetAnyCapturedTouchTarget();
|
|
static bool HasCapturedTouch(int32_t aId);
|
|
static already_AddRefed<dom::Touch> GetCapturedTouch(int32_t aId);
|
|
static bool ShouldConvertTouchToPointer(const dom::Touch* aTouch,
|
|
const WidgetTouchEvent* aEvent);
|
|
|
|
private:
|
|
void EvictTouches(dom::Document* aLimitToDocument = nullptr);
|
|
static void EvictTouchPoint(RefPtr<dom::Touch>& aTouch,
|
|
dom::Document* aLimitToDocument);
|
|
static void AppendToTouchList(WidgetTouchEvent::TouchArrayBase* aTouchList);
|
|
|
|
RefPtr<PresShell> mPresShell;
|
|
RefPtr<dom::Document> mDocument;
|
|
|
|
struct TouchInfo {
|
|
RefPtr<mozilla::dom::Touch> mTouch;
|
|
nsCOMPtr<nsIContent> mNonAnonymousTarget;
|
|
bool mConvertToPointer;
|
|
};
|
|
|
|
static StaticAutoPtr<nsTHashMap<nsUint32HashKey, TouchInfo>>
|
|
sCaptureTouchList;
|
|
static layers::LayersId sCaptureTouchLayersId;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif /* !defined(TouchManager_h_) */
|