Qt TableVIew上右键弹出菜单理解和demo思路

最新推荐文章于 2022-04-27 20:14:11 发布

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最新推荐文章于 2022-04-27 20:14:11 发布

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分类专栏： Qt C++ 界面文章标签： qt c++

本文链接：https://blog.youkuaiyun.com/u012377293/article/details/109179156

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class FilterFrame : public QWidget
{
   Q_OBJECT
public:
   FilterFrame(QWidget *pParent = nullptr);
   ~FilterFrame();

protected:
   void initUI();
   void slotsConnect();
   void setAction(QAction *pAction);
   void initContextMenu();

   protected slots:
   void doRightMenuAction();
   void showContextMenu(const QPoint& pos);

protected:
   void resizeEvent(QResizeEvent *event);
private:
   QTableView* m_pErrorView;
   QAction* m_pCollapseAllAction;
   QAction* m_pexpandAllAction;
   QMenu* m_pRightMenu; //右键菜单
};

FilterFrame::FilterFrame(QWidget *pParent /*= nullptr*/)
{
   initUI();
   initContextMenu();
   slotsConnect();

}

FilterFrame::~FilterFrame()
{
}

void FilterFrame::initUI()
{
   QVBoxLayout* pVLayout = new QVBoxLayout();
   m_pErrorView = new QTableView(this);
   pVLayout->addWidget(m_pErrorView);
   setLayout(pVLayout);
}

void FilterFrame::slotsConnect()
{
connect(m_pErrorView, SIGNAL(customContextMenuRequested(const QPoint&)), this, SLOT(showContextMenu(const QPoint&)));
}

void FilterFrame::setAction(QAction *pAction)
{
connect(pAction, SIGNAL(triggered()), this, SLOT(doRightMenuAction()));
m_pRightMenu->addAction(pAction);
}

void FilterFrame::initContextMenu()
{
   m_pRightMenu = new QMenu(this);
   m_pCollapseAllAction = new QAction(QIcon(""),"Collapse All", this); //设置命名
   setAction(m_pCollapseAllAction);
   m_pexpandAllAction = new QAction(QIcon(""),"Expand All", this); //设置命令
   setAction(m_pexpandAllAction);
}

void FilterFrame::showContextMenu(const QPoint& pos)
{
   if (m_pRightMenu)
   {
       m_pRightMenu->popup(QCursor::pos()); //弹出菜单
   }
}

void FilterFrame::resizeEvent(QResizeEvent *event)
{
   //拉伸tableView时，跟随着拉伸的变化
   if (m_pErrorView)
   {
       int width = m_pErrorView->width();
       int scrollWidth = m_pErrorView->verticalScrollBar()->sizeHint().width();
       m_pErrorView->setColumnWidth(0, width - scrollWidth);
   }
   QWidget::resizeEvent(event);
}
void FilterFrame::doRightMenuAction()
{
   QAction* pAction = dynamic_cast<QAction*>(QObject::sender());

   if (pAction == m_pCollapseAllAction)
   {
       m_pErrorView->collapseAll(); //折叠
   }
   else if (pAction == m_pexpandAllAction)
   {
       m_pErrorView->expandAll(); //展开
   }
   else
       assert(false);
}