QgsRendererRange QgsGraduatedSymbolRendererModel::rendererRange( const QModelIndex &index )
{
if ( !index.isValid() || !mRenderer || mRenderer->ranges().size() <= index.row() )
{
return QgsRendererRange();
}
return mRenderer->ranges().value( index.row() );
}
static QgsFeatureRenderer* readOldGraduatedSymbolRenderer( const QDomNode& rnode, QgsWkbTypes::GeometryType geomType )
{
QDomNode modeNode = rnode.namedItem( "mode" );
QString modeValue = modeNode.toElement().text();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsGraduatedSymbolRenderer::Mode m = QgsGraduatedSymbolRenderer::Custom;
if ( modeValue == "Empty" )
{
m = QgsGraduatedSymbolRenderer::Custom;
}
else if ( modeValue == "Quantile" )
{
m = QgsGraduatedSymbolRenderer::Quantile;
}
else //default
{
m = QgsGraduatedSymbolRenderer::EqualInterval;
}
// load ranges and symbols
QgsRangeList ranges;
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* symbol = readOldSymbol( symbolnode, geomType );
if ( symbol )
{
QgsOldSymbolMeta meta = readSymbolMeta( symbolnode );
double lowerValue = meta.lowerValue.toDouble();
double upperValue = meta.upperValue.toDouble();
QString label = meta.label;
if ( label.isEmpty() )
label = QString( "%1 - %2" ).arg( lowerValue, -1, 'f', 3 ).arg( upperValue, -1, 'f', 3 );
ranges.append( QgsRendererRange( lowerValue, upperValue, symbol, label ) );
}
symbolnode = symbolnode.nextSibling();
}
// create renderer
QgsGraduatedSymbolRenderer* r = new QgsGraduatedSymbolRenderer( classificationField, ranges );
r->setMode( m );
return r;
}