#ifndef SLIDINGSTACKEDWIDGET_H
#define SLIDINGSTACKEDWIDGET_H

#include <QStackedWidget>

#include <QWidget>
#include <QDebug>
#include <QEasingCurve>
#include <QPropertyAnimation>
#include <QParallelAnimationGroup>

/* Description

   SlidingStackedWidget is a class that is derived from QtStackedWidget
   and allows smooth side shifting of widgets, in addition
   to the original hard switching from one to another as offered by
   QStackedWidget itself.
*/

class SlidingStackedWidget : public QStackedWidget {
    Q_OBJECT

public:
    // This enumeration is used to define the animation direction
    enum t_direction {
        LEFT2RIGHT,
        RIGHT2LEFT,
        TOP2BOTTOM,
        BOTTOM2TOP,
        AUTOMATIC
    };

    // The Constructor and Destructor
    SlidingStackedWidget(QWidget *parent);
    ~SlidingStackedWidget(void);

public slots:
    // Some basic settings API
    void setSpeed(int speed); // animation duration in milliseconds
    void setAnimation(enum QEasingCurve::Type animationtype); // check out the QEasingCurve documentation for different styles
    void setVerticalMode(bool vertical=true);
    void setWrap(bool wrap); // wrapping is related to slideInNext/Prev;it defines the behaviour when reaching last/first page

    // The Animation / Page Change API
    void slideInNext();
    void slideInPrev();
    void slideInIdx(int idx, enum t_direction direction = AUTOMATIC);
    void slideInWidget(QWidget *widget, enum t_direction direction = AUTOMATIC);

signals:
    // this is used for internal purposes in the class engine
    void animationFinished(void);

protected slots:
    // this is used for internal purposes in the class engine
    void animationDoneSlot(void);

protected:
    // this is used for internal purposes in the class engine
    void slideInWgtImpl(QWidget *widget, enum t_direction direction = AUTOMATIC);

    QWidget *m_mainwindow;

    int m_speed;
    enum QEasingCurve::Type m_animationtype;
    bool m_vertical;
    int m_now;
    int m_next;
    bool m_wrap;
    QPoint m_pnow;
    bool m_active;

    QList<QWidget*> blockedPageList;
};

#endif // SLIDINGSTACKEDWIDGET_H