本文整理汇总了C++中QgsVectorDataProvider::enableGeometrylessFeatures方法的典型用法代码示例。如果您正苦于以下问题：C++ QgsVectorDataProvider::enableGeometrylessFeatures方法的具体用法？C++ QgsVectorDataProvider::enableGeometrylessFeatures怎么用？C++ QgsVectorDataProvider::enableGeometrylessFeatures使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QgsVectorDataProvider的用法示例。
在下文中一共展示了QgsVectorDataProvider::enableGeometrylessFeatures方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: loadDataToValueMap
void QgsAttributeTypeLoadDialog::loadDataToValueMap()
{
mValueMap.clear();
int idx = keyComboBox->itemData( keyComboBox->currentIndex() ).toInt();
int idx2 = valueComboBox->itemData( valueComboBox->currentIndex() ).toInt();
QgsMapLayer* dataLayer = QgsMapLayerRegistry::instance()->mapLayer( layerComboBox->currentText() );
QgsVectorLayer* vLayer = qobject_cast<QgsVectorLayer *>( dataLayer );
if ( vLayer == NULL )
{
return;
}
QgsVectorDataProvider* dataProvider = vLayer->dataProvider();
dataProvider->enableGeometrylessFeatures( true );
QgsAttributeList attributeList = QgsAttributeList();
attributeList.append( idx );
attributeList.append( idx2 );
vLayer->select( attributeList, QgsRectangle(), false );
QgsFeature f;
while ( vLayer->nextFeature( f ) )
{
QVariant val = f.attributeMap()[idx];
if ( val.isValid() && !val.isNull() && !val.toString().isEmpty() )
{
mValueMap.insert( f.attributeMap()[idx2].toString(), val );
}
}
dataProvider->enableGeometrylessFeatures( false );
}示例2: createPreview
void QgsAttributeTypeLoadDialog::createPreview( int fieldIndex, bool full )
{
previewTableWidget->clearContents();
for ( int i = previewTableWidget->rowCount() - 1; i > 0; i-- )
{
previewTableWidget->removeRow( i );
}
if ( layerComboBox->currentIndex() < 0 || fieldIndex < 0 )
{
//when nothing is selected there is no reason for preview
return;
}
int idx = keyComboBox->itemData( keyComboBox->currentIndex() ).toInt();
int idx2 = valueComboBox->itemData( valueComboBox->currentIndex() ).toInt();
QgsMapLayer* dataLayer = QgsMapLayerRegistry::instance()->mapLayer( layerComboBox->currentText() );
QgsVectorLayer* vLayer = qobject_cast<QgsVectorLayer *>( dataLayer );
if ( vLayer == NULL )
{
return;
}
QgsVectorDataProvider* dataProvider = vLayer->dataProvider();
dataProvider->enableGeometrylessFeatures( true );
QgsAttributeList attributeList = QgsAttributeList();
attributeList.append( idx );
attributeList.append( idx2 );
vLayer->select( attributeList, QgsRectangle(), false );
QgsFeature f;
QMap<QString, QVariant> valueMap;
while ( vLayer->nextFeature( f ) )
{
QVariant val1 = f.attributeMap()[idx];
QVariant val2 = f.attributeMap()[idx2];
if ( val1.isValid() && !val1.isNull() && !val1.toString().isEmpty()
&& val2.isValid() && !val2.isNull() && !val2.toString().isEmpty() )
{
valueMap.insert( val1.toString(), val2.toString() );
}
if ( !full && valueMap.size() > 8 )
break; //just first entries all on button
}
int row = 0;
for ( QMap<QString, QVariant>::iterator mit = valueMap.begin(); mit != valueMap.end(); mit++, row++ )
{
previewTableWidget->insertRow( row );
previewTableWidget->setItem( row, 0, new QTableWidgetItem( mit.value().toString() ) );
previewTableWidget->setItem( row, 1, new QTableWidgetItem( mit.key() ) );
}
dataProvider->enableGeometrylessFeatures( false );
}