103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
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/**
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* @file ModulePortGraphicsItem.h
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* @brief 模块端口的绘制和事件处理类
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* @date 2011-09-19
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*/
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#ifndef PAI_FRAME_WORKFLOWWIDGET_MODULEPORTGRAPHICSITEM_H
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#define PAI_FRAME_WORKFLOWWIDGET_MODULEPORTGRAPHICSITEM_H
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#include <QSizeF>
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#include <QColor>
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#include <QPainterPath>
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#include "PaiModuleStyle.h"
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class QStyleOptionGraphicsItem;
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class QWidget;
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namespace pai
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{
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namespace graphics2d
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{
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/**
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* @class ModulePortGraphicsItem
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* @brief 模块端口
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*/
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class ModulePortGraphicsItem
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{
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friend class ModuleGraphicsItem;
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public:
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/**
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* @brief 构造函数
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* @param[in] pStyle 模块风格信息
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* @param[in] center 端口中心点位置
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* @param[in] radius 拐角像素
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* @param[in] portDirection 端口方向
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*/
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ModulePortGraphicsItem(pai::graphics2d::PaiModuleStyle *pStyle,
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const QPointF& center,
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qreal radius,
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PortDirection portDirection);
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/**
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* @brief 析构函数
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*/
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virtual ~ModulePortGraphicsItem();
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/**
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* @brief 设置模块端口的选中状态
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* @param[in] selected true 选中
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* false 取消选中
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*/
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void SetPortSelected(bool selected);
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protected:
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/**
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* @brief 重写该虚函数，实现鼠标进入覆盖操作
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* @param[in] pEvent 鼠标hoverEnter事件
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*/
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virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *pEvent);
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/**
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* @brief 重写该虚函数，实现鼠标覆盖离开操作
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* @param[in] pEvent 鼠标hoverLeave事件
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*/
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virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *pEvent);
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/**
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* @brief 重写该虚函数，实现鼠标释放操作
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* @param[in] pEvent 鼠标mouseRelease事件
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*/
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virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *pEvent);
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/**
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* @brief 实现该虚函数，获取模块图元的包围矩形
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* @return 模块的包围矩形区域
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*/
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virtual QRectF boundingRect() const;
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/**
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* @brief 实现该虚函数，绘制模块图元
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* @param[in] pPainter 画笔
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* @param[in] pOption 模块风格参数
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* @param[in] pWidget 画布
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*/
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virtual void paint(QPainter *pPainter, const QStyleOptionGraphicsItem *pOption, QWidget *pWidget = NULL);
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private:
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pai::graphics2d::PaiModuleStyle *m_pStyle; ///< 模块的绘图信息
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QPointF m_center; ///< 端口中心的坐标
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qreal m_diameter; ///< 拐角大小
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bool m_selected; ///< 选中状态
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bool m_OnHovering; ///< hover状态
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bool m_light; ///< 高亮状态
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PortDirection m_PortDirection; ///< 端口方向
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QPainterPath m_path; ///< 端口外形
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};
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}
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}
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#endif ///< PAI_FRAME_WORKFLOWWIDGET_MODULEPORTGRAPHICSITEM_H
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