HowTo draw border for QTableWidget row? - qt

Question

I'm trying to make a border for rows in QTableWidget with different ways, but all solutions don't respond my requirements. All that I want, is to draw a rectangle around a whole row. I had try QStyledItemDelegate class, but that is not my way, because delegates are used only for item[ row, column ], not for the whole rows or columns.
Here is wrong solution:
/// #brief Рисуем границу вокруг строки.
class DrawBorderDelegate : public QStyledItemDelegate
{
public:
DrawBorderDelegate( QObject* parent = 0 ) : QStyledItemDelegate( parent ) {}
void paint( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const;
}; // DrawBorderDelegate
void DrawBorderDelegate::paint( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const
{
QStyleOptionViewItem opt = option;
painter->drawRect( opt.rect );
QStyledItemDelegate::paint( painter, opt, index );
}
And somewhere in code:
tableWidget->setItemDelegateForRow( row, new DrawBorderDelegate( this ) );
Thanks for help!

Answer 1

Your solution was not far wrong. You just need to be a bit more selective about which edges of the rectangle you draw:
void DrawBorderDelegate::paint( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const
{
const QRect rect( option.rect );
painter->drawLine( rect.topLeft(), rect.topRight() );
painter->drawLine( rect.bottomLeft(), rect.bottomRight() );
// Draw left edge of left-most cell
if ( index.column() == 0 )
painter->drawLine( rect.topLeft(), rect.bottomLeft() );
// Draw right edge of right-most cell
if ( index.column() == index.model()->columnCount() - 1 )
painter->drawLine( rect.topRight(), rect.bottomRight() );
QStyledItemDelegate::paint( painter, option, index );
}
Hope this helps!

Answer 2

#include <QTableWidget>
QTableWidget* table = new QTableWidget();
table->resize(400, 250);
table->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
table->setColumnCount(3);
table->setRowCount(2);
//Set Header Label Texts Here
table->verticalHeader ()->hide();
table->horizontalHeader()->hide();
table->setItem(0,0,new QTableWidgetItem("CELL 1"));
table->setItem(0,1,new QTableWidgetItem("CELL 2"));
table->setItem(0,2,new QTableWidgetItem("CELL 3"));
table->setItem(1,0,new QTableWidgetItem("CELL 4"));
table->setItem(1,1,new QTableWidgetItem("CELL 5"));
table->setItem(1,2,new QTableWidgetItem("CELL 6"));
table->setEditTriggers(QAbstractItemView::NoEditTriggers);
table->setFocusPolicy(Qt::NoFocus);
table->setSelectionMode(QAbstractItemView::NoSelection);
table-> setObjectName (QString :: fromUtf8 ("table_"));
table->show();
Stylesheet:
QTableWidget
{
background-color : none;
gridline-color: white; // this border for rows and columns
color:#ffffff;
}
QTableWidget#table_{
border:1px solid #ffffff; // this border for total table
}
sample output
Hope this simple way to helps!!!