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Ben 2025-02-23 21:26:22 +09:30
parent dc70921448
commit c159e7cda9
1 changed files with 3 additions and 3 deletions
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6
src/gui/symbology/qgscategorizedsymbolrendererwidget.cpp
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@ -1097,20 +1097,20 @@ QList<QVariant> QgsCategorizedSymbolRendererWidget::layerUniqueValues( const QSt
if ( idx == -1 ) if ( idx == -1 )
{ {
// Lets assume it's an expression // Lets assume it's an expression
QgsExpression *expression = new QgsExpression( attrName ); QgsExpression expression = QgsExpression( attrName );
QgsExpressionContext context; QgsExpressionContext context;
context << QgsExpressionContextUtils::globalScope() context << QgsExpressionContextUtils::globalScope()
<< QgsExpressionContextUtils::projectScope( QgsProject::instance() ) << QgsExpressionContextUtils::projectScope( QgsProject::instance() )
<< QgsExpressionContextUtils::atlasScope( nullptr ) << QgsExpressionContextUtils::atlasScope( nullptr )
<< QgsExpressionContextUtils::layerScope( mLayer ); << QgsExpressionContextUtils::layerScope( mLayer );
expression->prepare( &context ); expression.prepare( &context );
QgsFeatureIterator fit = mLayer->getFeatures(); QgsFeatureIterator fit = mLayer->getFeatures();
QgsFeature feature; QgsFeature feature;
while ( fit.nextFeature( feature ) ) while ( fit.nextFeature( feature ) )
{ {
context.setFeature( feature ); context.setFeature( feature );
const QVariant value = expression->evaluate( &context ); const QVariant value = expression.evaluate( &context );
if ( uniqueValues.contains( value ) ) if ( uniqueValues.contains( value ) )
continue; continue;
uniqueValues << value; uniqueValues << value;