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mousegesturerecognizer.h
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mousegesturerecognizer.h
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/*
* This file is part of the mouse gesture package.
* Copyright (C) 2006 Johan Thelin <e8johan@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the
* following conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* - Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* - The names of its contributors may be used to endorse
* or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef MOUSEGESTURERECOGNIZER_H
#define MOUSEGESTURERECOGNIZER_H
#include <QList>
#include <QObject>
#include <QPainterPath>
namespace Gesture {
/*
* The available directions.
*/
typedef enum { Up, Down, Left, Right, AnyHorizontal, AnyVertical, NoMatch } Direction;
/*
* A list of directions.
*/
typedef QList<Direction> DirectionList;
/*
* Create lists of directions and connect to a callback.
*/
struct Definition
{
Definition(const DirectionList &d, int c)
: directions( d ), code( c ) {}
DirectionList directions;
int code;
};
class MouseGestureRecognizer : public QObject
{
Q_OBJECT
public:
MouseGestureRecognizer(QObject* parent = 0, int minimumMovement = 5, double minimumMatch = 0.9);
~MouseGestureRecognizer();
void addGestureDefinition( const Definition &gesture );
void clearGestureDefinitions();
void startGesture( int x, int y );
void addPoint( int x, int y );
void endGesture( int x, int y );
void abortGesture();
DirectionList createDirectionsFromPath(QPainterPath path, unsigned length);
signals:
void recognized(int code);
protected:
void recognizeGesture();
private:
struct Private;
Private *d;
};
};
#endif // MOUSEGESTURERECOGNIZER_H