#ifndef PICSCENE_H
#define PICSCENE_H
#include <QGraphicsScene>
#include "pictextitem.h"
#include <QGraphicsSceneMouseEvent>
#include <QPoint>

QT_BEGIN_NAMESPACE
class QGraphicsSceneMouseEvent;
class QMenu;
class QPointF;
class QGraphicsLineItem;
class QFont;
class QGraphicsTextItem;
class QColor;
QT_END_NAMESPACE

class PicScene : public QGraphicsScene
{
    Q_OBJECT
public:
    enum Mode { InsertItem, InsertLine, InsertText, InsertPic, MoveItem };
    explicit PicScene(QObject *parent = 0);
    
    QFont font() const
        { return myFont; }
    QColor textColor() const
        { return myTextColor; }
    QColor itemColor() const
        { return myItemColor; }
    QColor lineColor() const
        { return myLineColor; }
    void setLineColor(const QColor &color);
    void setTextColor(const QColor &color);
    void setItemColor(const QColor &color);
    void setFont(const QFont &font);
    void keyPressEvent(QKeyEvent *event);

public slots:
    void setMode(Mode mode);
    void setIsdrawBackground(bool newIsdrawBackground);
signals:
    void textInserted(QGraphicsTextItem *item);
    void itemSelected(QGraphicsItem *item);
    void xmlContentChanged();
    void showTextWidthHeight();
    void adjustItemsPos();
    void focusedItemPosChanged(QPoint p);

private slots:
    void onFocusItemChanged(QGraphicsItem *newFocusItem, QGraphicsItem *oldFocusItem, Qt::FocusReason reason);
    void onFocusedItemPosChanged();

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
    void drawBackground(QPainter *painter, const QRectF &rect);
private:
    bool isItemChange(int type);

    QMenu *myItemMenu;
    Mode myMode;
    bool leftButtonDown;
    QPointF startPoint;
    QGraphicsLineItem *line;
    QFont myFont;
    PicTextItem *textItem;
    QColor myTextColor;
    QColor myItemColor;
    QColor myLineColor;

    bool IsdrawBackground;

    QGraphicsObject* currFocusItem;
};
#endif // PICSCENE_H