QgsLegendSymbolListV2 QgsFeatureRendererV2::legendSymbolItemsV2() const
{
QgsLegendSymbolList lst = const_cast<QgsFeatureRendererV2*>( this )->legendSymbolItems();
QgsLegendSymbolListV2 lst2;
int i = 0;
for ( QgsLegendSymbolList::const_iterator it = lst.begin(); it != lst.end(); ++it, ++i )
{
lst2 << QgsLegendSymbolItemV2( it->second, it->first, QString::number( i ), legendSymbolItemsCheckable() );
}
return lst2;
}
void QgsSizeScaleWidget::updatePreview()
{
if ( !mSymbol || !mLayer )
return;
QScopedPointer<QgsScaleExpression> expr( createExpression() );
QList<double> breaks = QgsSymbolLayerV2Utils::prettyBreaks( expr->minValue(), expr->maxValue(), 4 );
treeView->setIconSize( QSize( 512, 512 ) );
mPreviewList.clear();
int widthMax = 0;
for ( int i = 0; i < breaks.length(); i++ )
{
QScopedPointer< QgsMarkerSymbolV2 > symbol( dynamic_cast<QgsMarkerSymbolV2*>( mSymbol->clone() ) );
symbol->setDataDefinedSize( QgsDataDefined() );
symbol->setDataDefinedAngle( QgsDataDefined() ); // to avoid symbol not beeing drawn
symbol->setSize( expr->size( breaks[i] ) );
QgsSymbolV2LegendNode node( mLayerTreeLayer, QgsLegendSymbolItemV2( symbol.data(), QString::number( i ), 0 ) );
const QSize sz( node.minimumIconSize() );
node.setIconSize( sz );
QScopedPointer< QStandardItem > item( new QStandardItem( node.data( Qt::DecorationRole ).value<QPixmap>(), QString::number( breaks[i] ) ) );
widthMax = qMax( sz.width(), widthMax );
mPreviewList.appendRow( item.take() );
}
// center icon and align text left by giving icons the same width
// @todo maybe add some space so that icons don't touch
for ( int i = 0; i < breaks.length(); i++ )
{
QPixmap img( mPreviewList.item( i )->icon().pixmap( mPreviewList.item( i )->icon().actualSize( QSize( 512, 512 ) ) ) );
QPixmap enlarged( widthMax, img.height() );
// fill transparent and add original image
enlarged.fill( Qt::transparent );
QPainter p( &enlarged );
p.drawPixmap( QPoint(( widthMax - img.width() ) / 2, 0 ), img );
p.end();
mPreviewList.item( i )->setIcon( enlarged );
}
}
QgsLegendSymbolListV2 QgsSingleSymbolRendererV2::legendSymbolItemsV2() const
{
QgsLegendSymbolListV2 lst;
lst << QgsLegendSymbolItemV2( mSymbol.data(), QString(), 0 );
return lst;
}
