/*
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version
  2 of the License, or (at your option) any later version.
*/

#ifndef PICTUREVIEWER2_H
#define PICTUREVIEWER2_H

#include <QGraphicsView>
#include <QList>
#include <QVariant>
#include <QGraphicsItem>
#include <QStaticText>

class QGraphicsScene;
class QGraphicsPixmapItem;
class QWheelEvent;
class QContextMenuEvent;
class QTimer;
class PictureViewer2FileinfoItem;

typedef QList<QVariant> PicData;
typedef QList<QList<QVariant> > PicDataList;

class PictureViewer2 : public QGraphicsView {
    Q_OBJECT
    public:
        enum AssocActions { SlideAction, HideAction };
        explicit PictureViewer2(QWidget *parent = 0);
        void addFiles(const PicDataList &files, bool clear = true);
        void setFile(const PicData &file);
        virtual QSize sizeHint() const;

    public slots:
        void next();
        void previous();
        void slide(bool);
        void readSettings();
        void writeSettings();
        void shuffle();
        void initActions();

    protected:
        virtual void wheelEvent(QWheelEvent *event);
        virtual void contextMenuEvent(QContextMenuEvent *e);
        virtual void keyPressEvent(QKeyEvent *e);
        virtual void hideEvent(QHideEvent *);

    private slots:
        void showFile(const PicData &data);
        void constructInfoItem(const PicData &file, QSize picSize);

    private:
        void setupDialog();
        void setGradient(const QPixmap &pic);
        QString constructWindowTitle() const;
        PicDataList mFiles;
        QGraphicsScene *mScene;
        QSize mMinimunSize;
        QGraphicsPixmapItem *mCur;
        int mCurPos;
        QTimer *mSlideTimer;
        const QString mDefaultFile;
        PictureViewer2FileinfoItem *mFnItem;
        bool mUseGradient;
        QColor mBgColor;
        QPointF mInfoPos;
        QAction *mSlideA;
        QAction *mHideA;
};

class PictureViewer2FileinfoItem : public QGraphicsItem {
    public:
        explicit PictureViewer2FileinfoItem(const PicData &data, const int numSelected, const QSize &picSize = QSize(), QGraphicsItem *parent = 0);
        QRectF boundingRect() const;
        void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

    private:
        QStaticText mText;
};

#endif // PICTUREVIEWER2_H