gecko-dev/widget/qt/mozSwipeGesture.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* 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/. */
#ifndef MOZSWIPEGESTURE_H
#define MOZSWIPEGESTURE_H
#include <QGestureRecognizer>
#include <QGesture>
#include <QTouchEvent>
class MozSwipeGestureRecognizer: public QGestureRecognizer
{
public:
virtual QGesture* create(QObject* aTarget);
virtual QGestureRecognizer::Result recognize(QGesture* aState,
QObject* aWatched,
QEvent* aEvent);
virtual void reset(QGesture* aState);
};
class MozSwipeGesture: public QGesture
{
public:
int Direction();
private:
enum SwipeState {
NOT_STARTED = 0,
STARTED,
CANCELLED,
TRIGGERED
};
MozSwipeGesture();
bool Update(const QTouchEvent::TouchPoint& aFirstPoint,
const QTouchEvent::TouchPoint& aSecondPoint,
const QSizeF& aSize);
int mHorizontalDirection;
int mVerticalDirection;
SwipeState mSwipeState;
friend class MozSwipeGestureRecognizer;
};
#endif