在QTableView表头里面添加CheckBox

2024-01-08 02:53| 来源: 网络整理| 查看: 265

自定义表头，并实现在第0列添加checkbox，复选框居中显示，点击表头设置checkbox状态

class HeaderViewPrivate : public QHeaderView { Q_OBJECT public: explicit HeaderViewPrivate(Qt::Orientation orientation, QWidget * parent = 0) : QHeaderView(orientation, parent) { m_cbx = new QCheckBox(this); m_cbx->setVisible(true); setSectionsClickable(true);//如果不加这行代码不会触发点击事件 connect(this,SIGNAL(sectionClicked(int)),this, SLOT(onHeaderClicked(int))); } protected: void updateGeometries() { int width=this->sectionSize(0); QRect rc(sectionPosition(0),this->rect().top(),width,this->rect().height()); QRect rc1=m_cbx->rect(); m_cbx->move(rc.left()+(rc.width()-rc1.width())/2, rc.top()+(rc.height()-rc1.height())/2); } public slots: void onHeaderClicked(int nIndex) { if(nIndex==0) { m_cbx->setChecked(!m_cbx->isChecked()); } } private: QCheckBox *m_cbx; };

//可添加checkbox的行表头， class HeaderView : public QHeaderView { Q_OBJECT public: HeaderView(QWidget* parent = 0,int nAddCheckBoxColumn=0); protected: void paintSection(QPainter* painter, const QRect& rect, int logicalIndex) const override; public slots: void onHeaderClicked(int nIndex) { if(nIndex==0) { m_bChecked=!m_bChecked; this->repaint(); emit columnCheck(0,m_bChecked); } } Q_SIGNALS: void columnCheck(int logicalIndex, bool bChecked); private: int m_nAddCheckBoxColumn; bool m_bChecked=false; }; HeaderView::HeaderView(QWidget* parent,int nAddCheckBoxColumn) : QHeaderView(Qt::Horizontal, parent) { setSectionsClickable(true);//如果不加这行代码不会触发点击事件 connect(this,SIGNAL(sectionClicked(int)),this, SLOT(onHeaderClicked(int))); m_nAddCheckBoxColumn=nAddCheckBoxColumn; } void HeaderView::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const { painter->save(); QHeaderView::paintSection(painter, rect, logicalIndex); painter->restore(); if(logicalIndex == m_nAddCheckBoxColumn) { QStyleOptionButton checkBoxStyle; checkBoxStyle.state = m_bChecked ? QStyle::State_On : QStyle::State_Off; checkBoxStyle.state |= QStyle::State_Enabled; checkBoxStyle.iconSize = QSize(20, 20); QRect rc(rect.left()+(rect.width()-20)/2,rect.top()+(rect.height()-20)/2,20,20); checkBoxStyle.rect =rc; QCheckBox checkBox; QApplication::style()->drawPrimitive(QStyle::PE_IndicatorCheckBox, &checkBoxStyle, painter, &checkBox); } }

posted on 2019-09-05 17:22 孤山独剑阅读(2842) 评论(0) 编辑收藏举报

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