QgsExpressionContext QgsGraduatedSymbolRendererWidget::createExpressionContext() const
{
QgsExpressionContext expContext;
expContext << QgsExpressionContextUtils::globalScope()
<< QgsExpressionContextUtils::projectScope()
<< QgsExpressionContextUtils::atlasScope( nullptr );
if ( mapCanvas() )
{
expContext << QgsExpressionContextUtils::mapSettingsScope( mapCanvas()->mapSettings() )
<< new QgsExpressionContextScope( mapCanvas()->expressionContextScope() );
}
else
{
expContext << QgsExpressionContextUtils::mapSettingsScope( QgsMapSettings() );
}
if ( vectorLayer() )
expContext << QgsExpressionContextUtils::layerScope( vectorLayer() );
return expContext;
}
void QgsArcGisServiceSourceSelect::addButtonClicked()
{
if ( treeView->selectionModel()->selectedRows().isEmpty() )
{
return;
}
QgsOwsConnection connection( mServiceName, cmbConnections->currentText() );
QString pCrsString( labelCoordRefSys->text() );
QgsCoordinateReferenceSystem pCrs( pCrsString );
//prepare canvas extent info for layers with "cache features" option not set
QgsRectangle extent;
QgsCoordinateReferenceSystem canvasCrs;
if ( mapCanvas() )
{
extent = mapCanvas()->extent();
canvasCrs = mapCanvas()->mapSettings().destinationCrs();
}
//does canvas have "on the fly" reprojection set?
if ( pCrs.isValid() && canvasCrs.isValid() )
{
try
{
Q_NOWARN_DEPRECATED_PUSH
extent = QgsCoordinateTransform( canvasCrs, pCrs ).transform( extent );
Q_NOWARN_DEPRECATED_POP
QgsDebugMsg( QStringLiteral( "canvas transform: Canvas CRS=%1, Provider CRS=%2, BBOX=%3" )
.arg( canvasCrs.authid(), pCrs.authid(), extent.asWktCoordinates() ) );
}
catch ( const QgsCsException & )
{
// Extent is not in range for specified CRS, leave extent empty.
}
}
//create layers that user selected from this feature source
QModelIndexList list = treeView->selectionModel()->selectedRows();
for ( int i = 0; i < list.size(); i++ )
{
//add a wfs layer to the map
QModelIndex idx = mModelProxy->mapToSource( list[i] );
if ( !idx.isValid() )
{
continue;
}
int row = idx.row();
QString layerTitle = mModel->item( row, 0 )->text(); //layer title/id
QString layerName = mModel->item( row, 1 )->text(); //layer name
bool cacheFeatures = mServiceType == FeatureService ? mModel->item( row, 3 )->checkState() == Qt::Checked : false;
QString filter = mServiceType == FeatureService ? mModel->item( row, 4 )->text() : QString(); //optional filter specified by user
if ( cbxUseTitleLayerName->isChecked() && !layerTitle.isEmpty() )
{
layerName = layerTitle;
}
QgsRectangle layerExtent;
if ( mServiceType == FeatureService && ( cbxFeatureCurrentViewExtent->isChecked() || !cacheFeatures ) )
{
layerExtent = extent;
}
QString uri = getLayerURI( connection, layerTitle, layerName, pCrsString, filter, layerExtent );
QgsDebugMsg( "Layer " + layerName + ", uri: " + uri );
addServiceLayer( uri, layerName );
}
accept();
}
