QskGesture.h

/******************************************************************************
 * QSkinny - Copyright (C) The authors
 *           SPDX-License-Identifier: BSD-3-Clause
 *****************************************************************************/
 
#ifndef QSK_GESTURE_H
#define QSK_GESTURE_H
 
#include "QskGlobal.h"
 
#include <qmetatype.h>
#include <qpoint.h>
 
class QSK_EXPORT QskGesture
{
    Q_GADGET
 
  public:
    enum Type
    {
        NoType = -1,
 
        Tap,
        TapAndHold,
        Pan,
#if 0
        // TODO
        Pinch,
#endif
        Swipe,
 
        CustomType = 16
    };
    Q_ENUM( Type )
 
    enum State
    {
        NoGesture,
 
        Started,
        Updated,
        Finished,
        Canceled
    };
    Q_ENUM( State )
 
    virtual ~QskGesture();
 
    Type type() const { return m_type; }
 
    void setState( State );
    inline State state() const { return m_state; }
 
  protected:
    Q_DISABLE_COPY( QskGesture )
 
    QskGesture( Type type );
 
    const Type m_type;
    State m_state;
};
 
class QSK_EXPORT QskTapGesture : public QskGesture
{
    using Inherited = QskGesture;
 
  public:
    QskTapGesture();
    ~QskTapGesture() override;
 
    void setPosition( const QPointF& pos );
    inline QPointF position() const { return m_position; }
 
  private:
    QPointF m_position;
};
 
class QSK_EXPORT QskTapAndHoldGesture : public QskGesture
{
    using Inherited = QskGesture;
 
  public:
    QskTapAndHoldGesture();
    ~QskTapAndHoldGesture() override;
 
    void setPosition( const QPointF& pos );
    inline QPointF position() const { return m_position; }
 
    void setTimeout( int msecs );
    inline int timeout() const { return m_timeout; }
 
  private:
    QPointF m_position;
    int m_timeout;
};
 
class QSK_EXPORT QskPanGesture : public QskGesture
{
    using Inherited = QskGesture;
 
  public:
    QskPanGesture();
    ~QskPanGesture() override;
 
    void setVelocity( qreal );
    inline qreal velocity() const { return m_velocity; }
 
    void setOrigin( const QPointF& );
    inline const QPointF& origin() const { return m_origin; }
 
    void setLastPosition( const QPointF& );
    inline QPointF lastPosition() const { return m_lastPosition; }
 
    void setPosition( const QPointF& );
    inline const QPointF& position() const { return m_position; }
 
    void setAngle( qreal degrees );
    inline qreal angle() const { return m_angle; }
 
    inline QPointF delta() const { return m_position - m_lastPosition; }
 
  private:
    qreal m_angle;
    qreal m_velocity;
 
    QPointF m_origin;
    QPointF m_lastPosition;
    QPointF m_position;
};
 
class QSK_EXPORT QskSwipeGesture : public QskGesture
{
    using Inherited = QskGesture;
 
  public:
    QskSwipeGesture();
    ~QskSwipeGesture() override;
 
    void setAngle( qreal angle );
    inline qreal angle() const { return m_angle; };
 
  private:
    qreal m_angle;
};
 
#endif