/**
     *\file baseSelector.h
     *
     *\brief selector是用来实现图元具体操作的行为类，例如创建、编辑、旋转、移动等
     *
     *\author dsc
     */

#ifndef BASESELECTOR_H
#define BASESELECTOR_H

#include <QObject>
#include "designerScene.h"

enum SelectorType
{
    ST_base = 0, //基本
    ST_cerating, //创建
    ST_editing, //顶点编辑
    ST_scaling, //缩放
    ST_rotating, //旋转
};

enum OperationMode
{
    OM_none = 0,
    OM_move, //移动
    OM_create, //创建
    OM_edit, //顶点编辑
    OM_scale, //缩放
    OM_rotate, //旋转
};

class BaseSelector : public QObject
{
    Q_OBJECT

public:
    explicit BaseSelector(QObject *parent = 0);
    virtual ~BaseSelector();

public:
    virtual void mousePressEvent(QGraphicsSceneMouseEvent*, DesignerScene*);
    virtual void mouseMoveEvent(QGraphicsSceneMouseEvent*, DesignerScene*);
    virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent*, DesignerScene*);

    SelectorType getSelectorType() { return m_type; }
    //void setOperationMode(OperationMode m) { m_opMode = m; }
    OperationMode getOperationMode() { return ms_opMode; }

    void setCursor(DesignerScene*, const QCursor&);

signals:
    void setWorkingSelector(SelectorType);

protected:
    //静态变量，用于不同类型对象间的成员共享
    static OperationMode   ms_opMode;
    static QPointF         ms_ptMouseDown;
    static QPointF         ms_ptMouseLast;
    static int             ms_nDragHandle; //当前抓取的控制点

    SelectorType           m_type;
    bool                   m_bHoverOnHandel; //鼠标是否悬停在handel
};

#endif