#pragma once

#include <QPointF>
#include <QRectF>
#include "iPlotBase_global.h"

class ZxTool;
class ZxRenderItem;

/// @internal
class ZxToolState
{
public:

    ZxToolState();

    /// 最后活动工具
    ZxTool* getLastActivateTool();
    void setLastActivateTool(ZxTool* p);

    /// 键是否按下
    bool isLeftDown() const;
    bool isRightDown() const;

    /// 鼠标左键或右键按下的位置
    const QPointF& getDownPos() const;
    void setDownPos(const QPointF& pt);

    /// 鼠标左键或右键按下时的控制键状态
    Qt::KeyboardModifiers getDownModifiers() const;
    void setDownModifiers(const Qt::KeyboardModifiers & flags);

    /// 鼠标当前控制键状态
    Qt::KeyboardModifiers getCurrentModifiers() const;
    void setCurrentModifiers(const Qt::KeyboardModifiers & flags);

    /// 鼠标当前位置
    const QPointF& getCurrentPos() const;
    void setCurrentPos(const QPointF& pt);

    /// 鼠标前一个位置
    const QPointF& getPreviousPos();

    /// 鼠标左键或右键按下后到最后一次移动之间拖出来的矩形区域
    QRectF getTrackRect() const;

    /// 是否点击. 即按下后原地抬起.
    bool isClick() const;

    /// 清除所有信息
    void clear();

    /// 选中图件
    ZxRenderItem* getActiveItem() const;
    void setActiveItem(ZxRenderItem* p);

protected:

    ZxTool* m_pLastActiveTool;
    ZxRenderItem* m_pActiveItem;

    QPointF m_ptDown;
    QPointF m_ptCurrent;
    QPointF m_ptPrevious;

    float m_fMaxOffset;

    bool m_bLeftDown;
    bool m_bRightDown;

    Qt::KeyboardModifiers m_nDownModifiers;
    Qt::KeyboardModifiers m_nCurrentModifiers;

    friend class ZxRenderView;
};