Russian Qt Forum

C++ (Qt)
#include <QApplication>
#include <QPainter>
#include <QPaintEvent>
#include <QWidget>
#include <QGridLayout>
#include <QLabel>
 
class ContentsLabel : public QWidget
{
public:
	ContentsLabel( const QString& s, QWidget* p = 0 )
	: QWidget( p )
	, text_( s ) {}
 
	QSize sizeHint() const
	{
		br_ = QFontMetrics( font() ).boundingRect( text_ );
		return br_.size();
	}
	void setDotColor( const QColor& clr )
	{
		dot_clr_ = clr;
		update();
	}
 
protected:
	void paintEvent( QPaintEvent* e )
	{
		QPainter p( this );
		QFontMetrics fm = p.fontMetrics();
		int y = ( height() - br_.height() ) / 2 + fm.ascent();
		p.drawText( 0, y, text_ );
		int dot_w = fm.width( '.' ); 
		if( dot_clr_ != QColor() )
			p.setPen( dot_clr_ );
		for( int x = br_.width() + 1; x < width(); x += dot_w )
			p.drawText( x, y, "." );
	}
 
private:
	QString text_;
	mutable QRect br_;
	QColor dot_clr_;
};
 
int main( int argc, char** argv )
{
	QApplication app( argc, argv );
	QWidget w;
	QGridLayout l( &w );
 
	for( int i = 0; i < 20; i++ )
	{
		ContentsLabel* cl = new ContentsLabel( QString( "Contents text [%1]" ).arg( i + 1 ) );
		cl->setDotColor( Qt::blue );
		l.addWidget( cl, i, 0 );
		QLabel* pl = new QLabel( QString::number( i + 1 ) );
		pl->setSizePolicy( QSizePolicy::Fixed, QSizePolicy::Fixed );
		l.addWidget( pl, i, 1 );
	}
	w.show();
 
	return app.exec();
}