SlidingStackedWidget.h

#ifndef SLIDINGSTACKEDWIDGET_H
#define SLIDINGSTACKEDWIDGET_H

#include <QStackedWidget>

#if (QT_VERSION >= 0x050000)
#include <QtWidgets>
#else
#endif // (QT_VERSION >= 0x050000)

#include <QtGui>
#include <QWidget>
#include <QDebug>
#include <QEasingCurve>

class ImageWidget;

/*!
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, bool withanimation=true, 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 slideInWgt(QWidget * nextWidget, enum t_direction direction);
        void resizeEvent( QResizeEvent *event);

        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;

        ImageWidget *mBeginWidget, *mEndWidget;
        QPixmap mBeginPixmap, mEndPixmap;
        QColor mBackgroundColor;
};

#endif // SLIDINGSTACKEDWIDGET_H