QAbstractItemDelegate and QLinearGradient

[toutarrive]

Bonjour,

I've implemented a delegate (inhereted from QAbstractItemDelegate) in a QtableView in order to show the data as a bar chart.

void Delegate:: paint (QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
int value = index.model()->data( index, Qt::DisplayRole ).toInt();
double percent = double(value)/100.0;
 
painter->save();
 
QLinearGradient gradient( QPoint ( option.rect.x(), option.rect.y()  ),  QPoint ( option.rect.x()   , option.rect.height() ) ); 
gradient.setColorAt(0, QColor(42, 142,220) );
gradient.setColorAt(0.5, QColor(11, 90,163) );
gradient.setColorAt(1, QColor(4, 24,40) );
QBrush brush(gradient);
painter->setBrush(brush);
painter->drawRect(option.rect.x(), option.rect.y() , int(percent*(option.rect.width())), option.rect.height() );
 
painter->restore();
 
}

void Delegate:: paint (QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
int value = index.model()->data( index, Qt::DisplayRole ).toInt();
double percent = double(value)/100.0;

painter->save();

QLinearGradient gradient( QPoint ( option.rect.x(), option.rect.y()  ),  QPoint ( option.rect.x()   , option.rect.height() ) ); 
gradient.setColorAt(0, QColor(42, 142,220) );
gradient.setColorAt(0.5, QColor(11, 90,163) );
gradient.setColorAt(1, QColor(4, 24,40) );
QBrush brush(gradient);
painter->setBrush(brush);
painter->drawRect(option.rect.x(), option.rect.y() , int(percent*(option.rect.width())), option.rect.height() );

painter->restore();

}

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The gradient is not rendered at all. Instead Ive got a plain color.

Any ideas ?

Regards

[toutarrive]

The view is populated this way:

QTableView table;
	QStandardItemModel model(totalFile, 2);
	Delegate delegate;
	table.setItemDelegateForColumn(1, &delegate)
 
	for(int i =0; i<totalFile; ++i)
	{
		QStandardItem* item = new QStandardItem( QString(" %1 files") . arg(fileCount) );
		model.setItem(r, 0, item);
		model.setItem(r, 1, new QStandardItem(QString::number((value)));
	}
 
	table.setModel(&model);

QTableView table;
	QStandardItemModel model(totalFile, 2);
	Delegate delegate;
	table.setItemDelegateForColumn(1, &delegate)
	
	for(int i =0; i<totalFile; ++i)
	{
		QStandardItem* item = new QStandardItem( QString(" %1 files") . arg(fileCount) );
		model.setItem(r, 0, item);
		model.setItem(r, 1, new QStandardItem(QString::number((value)));
	}
	
	table.setModel(&model);

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[toutarrive]

It's was just a problem of coordonates in QlinearGradient.