void QgsRelationReferenceWidget::highlightActionTriggered( QAction *action )
{
if ( action == mHighlightFeatureAction )
{
highlightFeature();
}
else if ( action == mScaleHighlightFeatureAction )
{
highlightFeature( QgsFeature(), Scale );
}
else if ( action == mPanHighlightFeatureAction )
{
highlightFeature( QgsFeature(), Pan );
}
}
void QgsDualView::init( QgsVectorLayer* layer, QgsMapCanvas* mapCanvas, const QgsFeatureRequest &request, const QgsAttributeEditorContext &context )
{
mEditorContext = context;
connect( mTableView, SIGNAL( willShowContextMenu( QMenu*, QModelIndex ) ), this, SLOT( viewWillShowContextMenu( QMenu*, QModelIndex ) ) );
initLayerCache( layer, !request.filterRect().isNull() );
initModels( mapCanvas, request );
mConditionalFormatWidget->setLayer( layer );
mTableView->setModel( mFilterModel );
mFeatureList->setModel( mFeatureListModel );
mAttributeForm = new QgsAttributeForm( layer, QgsFeature(), mEditorContext );
if ( !mAttributeEditorScrollArea->layout() )
mAttributeEditorScrollArea->setLayout( new QGridLayout() );
mAttributeEditorScrollArea->layout()->addWidget( mAttributeForm );
mAttributeEditorScrollArea->setWidget( mAttributeForm );
mAttributeForm->hideButtonBox();
connect( mAttributeForm, SIGNAL( attributeChanged( QString, QVariant ) ), this, SLOT( featureFormAttributeChanged() ) );
connect( mMasterModel, SIGNAL( modelChanged() ), mAttributeForm, SLOT( refreshFeature() ) );
if ( mFeatureListPreviewButton->defaultAction() )
mFeatureList->setDisplayExpression( mDisplayExpression );
else
columnBoxInit();
// This slows down load of the attribute table heaps and uses loads of memory.
//mTableView->resizeColumnsToContents();
mFeatureList->setEditSelection( QgsFeatureIds() << mFeatureListModel->idxToFid( mFeatureListModel->index( 0, 0 ) ) );
}
void QgsRelationReferenceWidget::deleteForeignKey()
{
QVariant nullValue = QSettings().value( "qgis/nullValue", "NULL" );
if ( mReadOnlySelector )
{
QString nullText = "";
if ( mAllowNull )
{
nullText = tr( "%1 (no selection)" ).arg( nullValue.toString() );
}
mLineEdit->setText( nullText );
mForeignKey = QVariant();
mFeature.setValid( false );
}
else
{
if ( mAllowNull )
{
mComboBox->setCurrentIndex( 0 );
}
else
{
mComboBox->setCurrentIndex( -1 );
}
}
mRemoveFKButton->setEnabled( false );
updateAttributeEditorFrame( QgsFeature() );
emit foreignKeyChanged( QVariant( QVariant::Int ) );
}
bool QgsCachedFeatureIterator::fetchFeature( QgsFeature &f )
{
f.setValid( false );
if ( mClosed )
return false;
while ( mFeatureIdIterator != mFeatureIds.constEnd() )
{
if ( !mVectorLayerCache->mCache.contains( *mFeatureIdIterator ) )
{
++mFeatureIdIterator;
continue;
}
f = QgsFeature( *mVectorLayerCache->mCache[*mFeatureIdIterator]->feature() );
++mFeatureIdIterator;
if ( mRequest.acceptFeature( f ) )
{
f.setValid( true );
geometryToDestinationCrs( f, mTransform );
return true;
}
}
close();
return false;
}
void QgsRelationReferenceWidget::deleteForeignKey()
{
// deactivate filter comboboxes
if ( mChainFilters && !mFilterComboBoxes.isEmpty() )
{
QComboBox *cb = mFilterComboBoxes.first();
cb->setCurrentIndex( 0 );
disableChainedComboBoxes( cb );
}
if ( mReadOnlySelector )
{
const QString nullValue = QgsApplication::nullRepresentation();
QString nullText;
if ( mAllowNull )
{
nullText = tr( "%1 (no selection)" ).arg( nullValue );
}
mLineEdit->setText( nullText );
mForeignKey = QVariant( QVariant::Int );
mFeature.setValid( false );
}
else
{
mComboBox->setIdentifierValue( QVariant( QVariant::Int ) );
}
mRemoveFKButton->setEnabled( false );
updateAttributeEditorFrame( QgsFeature() );
emitForeignKeyChanged( QVariant( QVariant::Int ) );
}
QgsSelectByFormDialog::QgsSelectByFormDialog( QgsVectorLayer *layer, const QgsAttributeEditorContext &context, QWidget *parent, Qt::WindowFlags fl )
: QDialog( parent, fl )
, mLayer( layer )
, mMessageBar( nullptr )
{
QgsAttributeEditorContext dlgContext = context;
dlgContext.setFormMode( QgsAttributeEditorContext::StandaloneDialog );
dlgContext.setAllowCustomUi( false );
mForm = new QgsAttributeForm( layer, QgsFeature(), dlgContext, this );
mForm->setMode( QgsAttributeForm::SearchMode );
QVBoxLayout *vLayout = new QVBoxLayout();
vLayout->setMargin( 0 );
vLayout->setContentsMargins( 0, 0, 0, 0 );
setLayout( vLayout );
vLayout->addWidget( mForm );
connect( mForm, &QgsAttributeForm::closed, this, &QWidget::close );
QgsSettings settings;
restoreGeometry( settings.value( QStringLiteral( "Windows/SelectByForm/geometry" ) ).toByteArray() );
setWindowTitle( tr( "Select features by value" ) );
}
QgsFeatureList QgsClipboard::copyOf( const QgsFields &fields )
{
QgsDebugMsg( "returning clipboard." );
if ( !mUseSystemClipboard )
return mFeatureClipboard;
QClipboard *cb = QApplication::clipboard();
#ifndef Q_OS_WIN
QString text = cb->text( QClipboard::Selection );
#else
QString text = cb->text( QClipboard::Clipboard );
#endif
QStringList values = text.split( "\n" );
if ( values.isEmpty() || text.isEmpty() )
return mFeatureClipboard;
QgsFeatureList features;
foreach ( QString row, values )
{
// Assume that it's just WKT for now.
QgsGeometry* geometry = QgsGeometry::fromWkt( row );
if ( !geometry )
continue;
QgsFeature* feature = new QgsFeature();
if ( !fields.isEmpty() )
feature->setFields( &fields, true );
feature->setGeometry( geometry );
features.append( QgsFeature( *feature ) );
}
QgsAtlasComposition::QgsAtlasComposition( QgsComposition* composition )
: mComposition( composition )
, mEnabled( false )
, mHideCoverage( false )
, mFilenamePattern( "'output_'||$feature" )
, mCoverageLayer( 0 )
, mSingleFile( false )
, mSortFeatures( false )
, mSortAscending( true )
, mCurrentFeatureNo( 0 )
, mFilterFeatures( false )
{
// declare special columns with a default value
QgsExpression::setSpecialColumn( "$page", QVariant(( int )1 ) );
QgsExpression::setSpecialColumn( "$feature", QVariant(( int )0 ) );
QgsExpression::setSpecialColumn( "$numpages", QVariant(( int )1 ) );
QgsExpression::setSpecialColumn( "$numfeatures", QVariant(( int )0 ) );
QgsExpression::setSpecialColumn( "$atlasfeatureid", QVariant(( int )0 ) );
QgsExpression::setSpecialColumn( "$atlasfeature", QVariant::fromValue( QgsFeature() ) );
QgsExpression::setSpecialColumn( "$atlasgeometry", QVariant::fromValue( QgsGeometry() ) );
//listen out for layer removal
connect( QgsMapLayerRegistry::instance(), SIGNAL( layersWillBeRemoved( QStringList ) ), this, SLOT( removeLayers( QStringList ) ) );
}
void QgsDualView::init( QgsVectorLayer* layer, QgsMapCanvas* mapCanvas, const QgsFeatureRequest &request, QgsAttributeEditorContext context )
{
mEditorContext = context;
connect( mTableView, SIGNAL( willShowContextMenu( QMenu*, QModelIndex ) ), this, SLOT( viewWillShowContextMenu( QMenu*, QModelIndex ) ) );
initLayerCache( layer );
initModels( mapCanvas, request );
mTableView->setModel( mFilterModel );
mFeatureList->setModel( mFeatureListModel );
mAttributeForm = new QgsAttributeForm( layer, QgsFeature(), mEditorContext );
mAttributeEditorScrollArea->setLayout( new QGridLayout() );
mAttributeEditorScrollArea->layout()->addWidget( mAttributeForm );
mAttributeEditorScrollArea->setWidget( mAttributeForm );
mAttributeForm->hideButtonBox();
connect( mAttributeForm, SIGNAL( attributeChanged( QString, QVariant ) ), this, SLOT( featureFormAttributeChanged() ) );
if ( mFeatureListPreviewButton->defaultAction() )
mFeatureList->setDisplayExpression( mDisplayExpression );
else
columnBoxInit();
mFeatureList->setEditSelection( QgsFeatureIds() << mFeatureListModel->idxToFid( mFeatureListModel->index( 0, 0 ) ) );
}
void QgsRelationReferenceWidget::setRelation( const QgsRelation& relation, bool allowNullValue )
{
mAllowNull = allowNullValue;
mRemoveFKButton->setVisible( allowNullValue && mReadOnlySelector );
if ( relation.isValid() )
{
mInvalidLabel->hide();
mRelation = relation;
mReferencingLayer = relation.referencingLayer();
mRelationName = relation.name();
mReferencedLayer = relation.referencedLayer();
mFkeyFieldIdx = mReferencedLayer->fieldNameIndex( relation.fieldPairs().first().second );
QgsAttributeEditorContext context( mEditorContext, relation, QgsAttributeEditorContext::Single, QgsAttributeEditorContext::Embed );
if ( mEmbedForm )
{
mAttributeEditorFrame->setTitle( mReferencedLayer->name() );
mReferencedAttributeForm = new QgsAttributeForm( relation.referencedLayer(), QgsFeature(), context, this );
mReferencedAttributeForm->hideButtonBox();
mAttributeEditorLayout->addWidget( mReferencedAttributeForm );
}
}
else
{
mInvalidLabel->show();
}
if ( mShown && isVisible() )
{
init();
}
}
bool QgsPostgresFeatureIterator::fetchFeature( QgsFeature& feature )
{
feature.setValid( false );
if ( mClosed )
return false;
if ( mFeatureQueue.empty() )
{
QString fetch = QString( "FETCH FORWARD %1 FROM %2" ).arg( mFeatureQueueSize ).arg( mCursorName );
QgsDebugMsgLevel( QString( "fetching %1 features." ).arg( mFeatureQueueSize ), 4 );
if ( mConn->PQsendQuery( fetch ) == 0 ) // fetch features asynchronously
{
QgsMessageLog::logMessage( QObject::tr( "Fetching from cursor %1 failed\nDatabase error: %2" ).arg( mCursorName, mConn->PQerrorMessage() ), QObject::tr( "PostGIS" ) );
}
QgsPostgresResult queryResult;
for ( ;; )
{
queryResult = mConn->PQgetResult();
if ( !queryResult.result() )
break;
if ( queryResult.PQresultStatus() != PGRES_TUPLES_OK )
{
QgsMessageLog::logMessage( QObject::tr( "Fetching from cursor %1 failed\nDatabase error: %2" ).arg( mCursorName, mConn->PQerrorMessage() ), QObject::tr( "PostGIS" ) );
break;
}
int rows = queryResult.PQntuples();
if ( rows == 0 )
continue;
for ( int row = 0; row < rows; row++ )
{
mFeatureQueue.enqueue( QgsFeature() );
getFeature( queryResult, row, mFeatureQueue.back() );
} // for each row in queue
}
}
if ( mFeatureQueue.empty() )
{
QgsDebugMsg( QString( "Finished after %1 features" ).arg( mFetched ) );
close();
mSource->mShared->ensureFeaturesCountedAtLeast( mFetched );
return false;
}
feature = mFeatureQueue.dequeue();
mFetched++;
feature.setValid( true );
feature.setFields( mSource->mFields ); // allow name-based attribute lookups
return true;
}
void QgsDualView::init( QgsVectorLayer *layer, QgsMapCanvas *mapCanvas, const QgsFeatureRequest &request, const QgsAttributeEditorContext &context, bool loadFeatures )
{
if ( !layer )
return;
mLayer = layer;
mEditorContext = context;
connect( mTableView, &QgsAttributeTableView::willShowContextMenu, this, &QgsDualView::viewWillShowContextMenu );
mTableView->horizontalHeader()->setContextMenuPolicy( Qt::CustomContextMenu );
connect( mTableView->horizontalHeader(), &QHeaderView::customContextMenuRequested, this, &QgsDualView::showViewHeaderMenu );
connect( mTableView, &QgsAttributeTableView::columnResized, this, &QgsDualView::tableColumnResized );
connect( mFeatureList, &QgsFeatureListView::willShowContextMenu, this, &QgsDualView::widgetWillShowContextMenu );
initLayerCache( !( request.flags() & QgsFeatureRequest::NoGeometry ) || !request.filterRect().isNull() );
initModels( mapCanvas, request, loadFeatures );
mConditionalFormatWidget->setLayer( mLayer );
mTableView->setModel( mFilterModel );
mFeatureList->setModel( mFeatureListModel );
delete mAttributeForm;
mAttributeForm = new QgsAttributeForm( mLayer, mTempAttributeFormFeature, mEditorContext );
mTempAttributeFormFeature = QgsFeature();
if ( !context.parentContext() )
{
mAttributeEditorScrollArea = new QgsScrollArea();
mAttributeEditorScrollArea->setWidgetResizable( true );
mAttributeEditor->layout()->addWidget( mAttributeEditorScrollArea );
mAttributeEditorScrollArea->setWidget( mAttributeForm );
}
else
{
mAttributeEditor->layout()->addWidget( mAttributeForm );
}
connect( mAttributeForm, &QgsAttributeForm::widgetValueChanged, this, &QgsDualView::featureFormAttributeChanged );
connect( mAttributeForm, &QgsAttributeForm::modeChanged, this, &QgsDualView::formModeChanged );
connect( mMasterModel, &QgsAttributeTableModel::modelChanged, mAttributeForm, &QgsAttributeForm::refreshFeature );
connect( mAttributeForm, &QgsAttributeForm::filterExpressionSet, this, &QgsDualView::filterExpressionSet );
connect( mFilterModel, &QgsAttributeTableFilterModel::sortColumnChanged, this, &QgsDualView::onSortColumnChanged );
if ( mFeatureListPreviewButton->defaultAction() )
mFeatureList->setDisplayExpression( mDisplayExpression );
else
columnBoxInit();
// This slows down load of the attribute table heaps and uses loads of memory.
//mTableView->resizeColumnsToContents();
mFeatureList->setEditSelection( QgsFeatureIds() << mFeatureListModel->idxToFid( mFeatureListModel->index( 0, 0 ) ) );
}
bool QgsCachedFeatureIterator::fetchFeature( QgsFeature& f )
{
mFeatureIdIterator++;
while ( mFeatureIdIterator != mFeatureIds.end() )
{
f = QgsFeature( *mVectorLayerCache->mCache[*mFeatureIdIterator]->feature() );
if ( mRequest.acceptFeature( f ) )
return true;
}
return false;
}
QStringList QgsDataDefined::referencedColumns( QgsVectorLayer* layer )
{
if ( layer )
{
return referencedColumns( QgsExpressionContextUtils::createFeatureBasedContext( QgsFeature(), layer->fields() ) );
}
else
{
QgsExpressionContext empty;
return referencedColumns( empty );
}
}
void QgsRelationReferenceWidget::showIndeterminateState()
{
if ( mReadOnlySelector )
{
whileBlocking( mLineEdit )->setText( QString() );
}
else
{
whileBlocking( mComboBox )->setCurrentIndex( -1 );
}
mRemoveFKButton->setEnabled( false );
updateAttributeEditorFrame( QgsFeature() );
}
bool QgsDataDefined::prepareExpression( QgsVectorLayer* layer )
{
if ( layer )
{
return prepareExpression( QgsExpressionContextUtils::createFeatureBasedContext( QgsFeature(), layer->fields() ) );
}
else
{
//preparing expression without a layer set, so pass empty context
QgsExpressionContext empty;
return prepareExpression( empty );
}
}
bool QgsCachedFeatureIterator::fetchFeature( QgsFeature& f )
{
mFeatureIdIterator++;
if ( mFeatureIdIterator == mFeatureIds.end() )
{
return false;
}
else
{
f = QgsFeature( *mVectorLayerCache->mCache[*mFeatureIdIterator]->feature() );
return true;
}
}
void QgsDualView::init( QgsVectorLayer* layer, QgsMapCanvas* mapCanvas, const QgsFeatureRequest &request, const QgsAttributeEditorContext &context )
{
if ( !layer )
return;
mEditorContext = context;
connect( mTableView, SIGNAL( willShowContextMenu( QMenu*, QModelIndex ) ), this, SLOT( viewWillShowContextMenu( QMenu*, QModelIndex ) ) );
mTableView->horizontalHeader()->setContextMenuPolicy( Qt::CustomContextMenu );
connect( mTableView->horizontalHeader(), SIGNAL( customContextMenuRequested( QPoint ) ), this, SLOT( showViewHeaderMenu( QPoint ) ) );
connect( mTableView, SIGNAL( columnResized( int, int ) ), this, SLOT( tableColumnResized( int, int ) ) );
initLayerCache( layer, !request.filterRect().isNull() );
initModels( mapCanvas, request );
mConditionalFormatWidget->setLayer( layer );
mTableView->setModel( mFilterModel );
mFeatureList->setModel( mFeatureListModel );
delete mAttributeForm;
mAttributeForm = new QgsAttributeForm( layer, QgsFeature(), mEditorContext );
if ( !context.parentContext() )
{
mAttributeEditorScrollArea = new QScrollArea();
mAttributeEditorScrollArea->setWidgetResizable( true );
mAttributeEditor->layout()->addWidget( mAttributeEditorScrollArea );
mAttributeEditorScrollArea->setWidget( mAttributeForm );
}
else
{
mAttributeEditor->layout()->addWidget( mAttributeForm );
}
connect( mAttributeForm, SIGNAL( attributeChanged( QString, QVariant ) ), this, SLOT( featureFormAttributeChanged() ) );
connect( mAttributeForm, SIGNAL( modeChanged( QgsAttributeForm::Mode ) ), this, SIGNAL( formModeChanged( QgsAttributeForm::Mode ) ) );
connect( mMasterModel, SIGNAL( modelChanged() ), mAttributeForm, SLOT( refreshFeature() ) );
connect( mAttributeForm, SIGNAL( filterExpressionSet( QString, QgsAttributeForm::FilterType ) ), this, SIGNAL( filterExpressionSet( QString, QgsAttributeForm::FilterType ) ) );
connect( mFilterModel, SIGNAL( sortColumnChanged( int, Qt::SortOrder ) ), this, SLOT( onSortColumnChanged() ) );
if ( mFeatureListPreviewButton->defaultAction() )
mFeatureList->setDisplayExpression( mDisplayExpression );
else
columnBoxInit();
// This slows down load of the attribute table heaps and uses loads of memory.
//mTableView->resizeColumnsToContents();
mFeatureList->setEditSelection( QgsFeatureIds() << mFeatureListModel->idxToFid( mFeatureListModel->index( 0, 0 ) ) );
}
void QgsRelationReferenceWidget::setRelation( const QgsRelation &relation, bool allowNullValue )
{
mAllowNull = allowNullValue;
mRemoveFKButton->setVisible( allowNullValue && mReadOnlySelector );
if ( relation.isValid() )
{
mInvalidLabel->hide();
mRelation = relation;
mReferencingLayer = relation.referencingLayer();
mRelationName = relation.name();
mReferencedLayer = relation.referencedLayer();
mReferencedField = relation.fieldPairs().at( 0 ).second;
if ( mComboBox )
mComboBox->setIdentifierField( mReferencedField );
mReferencedFieldIdx = mReferencedLayer->fields().lookupField( relation.fieldPairs().at( 0 ).second );
mReferencingFieldIdx = mReferencingLayer->fields().lookupField( relation.fieldPairs().at( 0 ).first );
mAttributeEditorFrame->setObjectName( QStringLiteral( "referencing/" ) + relation.name() );
if ( mEmbedForm )
{
QgsAttributeEditorContext context( mEditorContext, relation, QgsAttributeEditorContext::Single, QgsAttributeEditorContext::Embed );
mAttributeEditorFrame->setTitle( mReferencedLayer->name() );
mReferencedAttributeForm = new QgsAttributeForm( relation.referencedLayer(), QgsFeature(), context, this );
mAttributeEditorLayout->addWidget( mReferencedAttributeForm );
}
connect( mReferencedLayer, &QgsVectorLayer::editingStarted, this, &QgsRelationReferenceWidget::updateAddEntryButton );
connect( mReferencedLayer, &QgsVectorLayer::editingStopped, this, &QgsRelationReferenceWidget::updateAddEntryButton );
updateAddEntryButton();
}
else
{
mInvalidLabel->show();
}
if ( mShown && isVisible() )
{
init();
}
}
QgsAtlasComposition::QgsAtlasComposition( QgsComposition* composition ) :
mComposition( composition ),
mEnabled( false ),
mHideCoverage( false ), mFilenamePattern( "'output_'||$feature" ),
mCoverageLayer( 0 ), mSingleFile( false ),
mSortFeatures( false ), mSortAscending( true ), mCurrentFeatureNo( 0 ),
mFilterFeatures( false ), mFeatureFilter( "" ),
mFilenameParserError( QString() ),
mFilterParserError( QString() )
{
// declare special columns with a default value
QgsExpression::setSpecialColumn( "$page", QVariant(( int )1 ) );
QgsExpression::setSpecialColumn( "$feature", QVariant(( int )0 ) );
QgsExpression::setSpecialColumn( "$numpages", QVariant(( int )1 ) );
QgsExpression::setSpecialColumn( "$numfeatures", QVariant(( int )0 ) );
QgsExpression::setSpecialColumn( "$atlasfeatureid", QVariant(( int )0 ) );
QgsExpression::setSpecialColumn( "$atlasfeature", QVariant::fromValue( QgsFeature() ) );
QgsExpression::setSpecialColumn( "$atlasgeometry", QVariant::fromValue( QgsGeometry() ) );
}
bool QgsFeaturePool::get( QgsFeatureId id, QgsFeature &feature )
{
QMutexLocker lock( &mLayerMutex );
QgsFeature *pfeature = mFeatureCache.object( id );
if ( pfeature )
{
//feature was cached
feature = *pfeature;
}
// Feature not in cache, retrieve from layer
pfeature = new QgsFeature();
// TODO: avoid always querying all attributes (attribute values are needed when merging by attribute)
if ( !mLayer->getFeatures( QgsFeatureRequest( id ) ).nextFeature( *pfeature ) )
{
delete pfeature;
return false;
}
//make a copy of pfeature into feature parameter
feature = QgsFeature( *pfeature );
//ownership of pfeature is transferred to cache
mFeatureCache.insert( id, pfeature );
return true;
}
bool QgsPostgresFeatureIterator::nextFeature( QgsFeature& feature )
{
feature.setValid( false );
if ( mClosed )
return false;
#if 0
// featureAtId used to have some special checks - necessary?
if ( !mUseQueue )
{
QgsPostgresResult queryResult = P->mConnectionRO->PQexec( QString( "FETCH FORWARD 1 FROM %1" ).arg( mCursorName ) );
int rows = queryResult.PQntuples();
if ( rows == 0 )
{
QgsMessageLog::logMessage( tr( "feature %1 not found" ).arg( featureId ), tr( "PostGIS" ) );
P->mConnectionRO->closeCursor( cursorName );
return false;
}
else if ( rows != 1 )
{
QgsMessageLog::logMessage( tr( "found %1 features instead of just one." ).arg( rows ), tr( "PostGIS" ) );
}
bool gotit = getFeature( queryResult, 0, feature );
feature.setValid( gotit );
feature.setFields( &P->mAttributeFields ); // allow name-based attribute lookups
return gotit;
}
#endif
if ( mFeatureQueue.empty() )
{
QString fetch = QString( "FETCH FORWARD %1 FROM %2" ).arg( mFeatureQueueSize ).arg( mCursorName );
QgsDebugMsgLevel( QString( "fetching %1 features." ).arg( mFeatureQueueSize ), 4 );
if ( P->mConnectionRO->PQsendQuery( fetch ) == 0 ) // fetch features asynchronously
{
QgsMessageLog::logMessage( QObject::tr( "Fetching from cursor %1 failed\nDatabase error: %2" ).arg( mCursorName ).arg( P->mConnectionRO->PQerrorMessage() ), QObject::tr( "PostGIS" ) );
}
QgsPostgresResult queryResult;
for ( ;; )
{
queryResult = P->mConnectionRO->PQgetResult();
if ( !queryResult.result() )
break;
if ( queryResult.PQresultStatus() != PGRES_TUPLES_OK )
{
QgsMessageLog::logMessage( QObject::tr( "Fetching from cursor %1 failed\nDatabase error: %2" ).arg( mCursorName ).arg( P->mConnectionRO->PQerrorMessage() ), QObject::tr( "PostGIS" ) );
break;
}
int rows = queryResult.PQntuples();
if ( rows == 0 )
continue;
for ( int row = 0; row < rows; row++ )
{
mFeatureQueue.enqueue( QgsFeature() );
getFeature( queryResult, row, mFeatureQueue.back() );
} // for each row in queue
}
}
if ( mFeatureQueue.empty() )
{
QgsDebugMsg( QString( "Finished after %1 features" ).arg( mFetched ) );
close();
if ( P->mFeaturesCounted < mFetched )
{
QgsDebugMsg( QString( "feature count adjusted from %1 to %2" ).arg( P->mFeaturesCounted ).arg( mFetched ) );
P->mFeaturesCounted = mFetched;
}
return false;
}
// Now return the next feature from the queue
if ( mRequest.flags() & QgsFeatureRequest::NoGeometry )
{
feature.setGeometryAndOwnership( 0, 0 );
}
else
{
QgsGeometry* featureGeom = mFeatureQueue.front().geometryAndOwnership();
feature.setGeometry( featureGeom );
}
feature.setFeatureId( mFeatureQueue.front().id() );
feature.setAttributes( mFeatureQueue.front().attributes() );
mFeatureQueue.dequeue();
mFetched++;
feature.setValid( true );
feature.setFields( &P->mAttributeFields ); // allow name-based attribute lookups
return true;
}
QDomDocument createTransactionDocument( QgsServerInterface* serverIface, const QString& version,
const QgsServerRequest& request )
{
Q_UNUSED( version );
QDomDocument doc;
QgsWfsProjectParser* configParser = getConfigParser( serverIface );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
QgsAccessControl* accessControl = serverIface->accessControls();
#endif
const QString requestBody = request.getParameter( QStringLiteral( "REQUEST_BODY" ) );
QString errorMsg;
if ( !doc.setContent( requestBody, true, &errorMsg ) )
{
throw QgsRequestNotWellFormedException( errorMsg );
}
QDomElement docElem = doc.documentElement();
QDomNodeList docChildNodes = docElem.childNodes();
// Re-organize the transaction document
QDomDocument mDoc;
QDomElement mDocElem = mDoc.createElement( QStringLiteral( "myTransactionDocument" ) );
mDocElem.setAttribute( QStringLiteral( "xmlns" ), QGS_NAMESPACE );
mDocElem.setAttribute( QStringLiteral( "xmlns:wfs" ), WFS_NAMESPACE );
mDocElem.setAttribute( QStringLiteral( "xmlns:gml" ), GML_NAMESPACE );
mDocElem.setAttribute( QStringLiteral( "xmlns:ogc" ), OGC_NAMESPACE );
mDocElem.setAttribute( QStringLiteral( "xmlns:qgs" ), QGS_NAMESPACE );
mDocElem.setAttribute( QStringLiteral( "xmlns:xsi" ), QStringLiteral( "http://www.w3.org/2001/XMLSchema-instance" ) );
mDoc.appendChild( mDocElem );
QDomElement actionElem;
QString actionName;
QDomElement typeNameElem;
QString typeName;
for ( int i = docChildNodes.count(); 0 < i; --i )
{
actionElem = docChildNodes.at( i - 1 ).toElement();
actionName = actionElem.localName();
if ( actionName == QLatin1String( "Insert" ) )
{
QDomElement featureElem = actionElem.firstChild().toElement();
typeName = featureElem.localName();
}
else if ( actionName == QLatin1String( "Update" ) )
{
typeName = actionElem.attribute( QStringLiteral( "typeName" ) );
}
else if ( actionName == QLatin1String( "Delete" ) )
{
typeName = actionElem.attribute( QStringLiteral( "typeName" ) );
}
if ( typeName.contains( QLatin1String( ":" ) ) )
typeName = typeName.section( QStringLiteral( ":" ), 1, 1 );
QDomNodeList typeNameList = mDocElem.elementsByTagName( typeName );
if ( typeNameList.count() == 0 )
{
typeNameElem = mDoc.createElement( typeName );
mDocElem.appendChild( typeNameElem );
}
else
typeNameElem = typeNameList.at( 0 ).toElement();
typeNameElem.appendChild( actionElem );
}
// It's time to make the transaction
// Create the response document
QDomDocument resp;
//wfs:WFS_TransactionRespone element
QDomElement respElem = resp.createElement( QStringLiteral( "WFS_TransactionResponse" )/*wfs:WFS_TransactionResponse*/ );
respElem.setAttribute( QStringLiteral( "xmlns" ), WFS_NAMESPACE );
respElem.setAttribute( QStringLiteral( "xmlns:xsi" ), QStringLiteral( "http://www.w3.org/2001/XMLSchema-instance" ) );
respElem.setAttribute( QStringLiteral( "xsi:schemaLocation" ), WFS_NAMESPACE + " http://schemas.opengis.net/wfs/1.0.0/wfs.xsd" );
respElem.setAttribute( QStringLiteral( "xmlns:ogc" ), OGC_NAMESPACE );
respElem.setAttribute( QStringLiteral( "version" ), QStringLiteral( "1.0.0" ) );
resp.appendChild( respElem );
// Store the created feature id for WFS
QStringList insertResults;
// Get the WFS layers id
QStringList wfsLayersId = configParser->wfsLayers();;
QList<QgsMapLayer*> layerList;
QgsMapLayer* currentLayer = nullptr;
// Loop through the layer transaction elements
docChildNodes = mDocElem.childNodes();
for ( int i = 0; i < docChildNodes.count(); ++i )
{
// Get the vector layer
typeNameElem = docChildNodes.at( i ).toElement();
typeName = typeNameElem.tagName();
layerList = configParser->mapLayerFromTypeName( typeName );
// Could be empty!
if ( layerList.count() > 0 )
{
currentLayer = layerList.at( 0 );
}
else
{
throw QgsRequestNotWellFormedException( QStringLiteral( "Wrong TypeName: %1" ).arg( typeName ) );
}
QgsVectorLayer* layer = qobject_cast<QgsVectorLayer*>( currentLayer );
// it's a vectorlayer and defined by the administrator as a WFS layer
if ( layer && wfsLayersId.contains( layer->id() ) )
{
#ifdef HAVE_SERVER_PYTHON_PLUGINS
if ( actionName == QLatin1String( "Insert" ) )
{
if ( !accessControl->layerInsertPermission( layer ) )
{
throw QgsSecurityAccessException( QStringLiteral( "Feature insert permission denied" ) );
}
}
else if ( actionName == QLatin1String( "Update" ) )
{
if ( !accessControl->layerUpdatePermission( layer ) )
{
throw QgsSecurityAccessException( QStringLiteral( "Feature update permission denied" ) );
}
}
else if ( actionName == QLatin1String( "Delete" ) )
{
if ( !accessControl->layerDeletePermission( layer ) )
{
throw QgsSecurityAccessException( QStringLiteral( "Feature delete permission denied" ) );
}
}
#endif
// Get the provider and it's capabilities
QgsVectorDataProvider* provider = layer->dataProvider();
if ( !provider )
{
continue;
}
int cap = provider->capabilities();
// Start the update transaction
layer->startEditing();
if (( cap & QgsVectorDataProvider::ChangeAttributeValues ) && ( cap & QgsVectorDataProvider::ChangeGeometries ) )
{
// Loop through the update elements for this layer
QDomNodeList upNodeList = typeNameElem.elementsByTagNameNS( WFS_NAMESPACE, QStringLiteral( "Update" ) );
for ( int j = 0; j < upNodeList.count(); ++j )
{
if ( !configParser->wfstUpdateLayers().contains( layer->id() ) )
{
//no wfs permissions to do updates
QString errorMsg = "No permissions to do WFS updates on layer '" + layer->name() + "'";
QgsMessageLog::logMessage( errorMsg, QStringLiteral( "Server" ), QgsMessageLog::CRITICAL );
addTransactionResult( resp, respElem, QStringLiteral( "FAILED" ), QStringLiteral( "Update" ), errorMsg );
return resp;
}
actionElem = upNodeList.at( j ).toElement();
// Get the Feature Ids for this filter on the layer
QDomElement filterElem = actionElem.elementsByTagName( QStringLiteral( "Filter" ) ).at( 0 ).toElement();
QgsFeatureIds fids = getFeatureIdsFromFilter( filterElem, layer );
// Loop through the property elements
// Store properties and the geometry element
QDomNodeList propertyNodeList = actionElem.elementsByTagName( QStringLiteral( "Property" ) );
QMap<QString, QString> propertyMap;
QDomElement propertyElem;
QDomElement nameElem;
QDomElement valueElem;
QDomElement geometryElem;
for ( int l = 0; l < propertyNodeList.count(); ++l )
{
propertyElem = propertyNodeList.at( l ).toElement();
nameElem = propertyElem.elementsByTagName( QStringLiteral( "Name" ) ).at( 0 ).toElement();
valueElem = propertyElem.elementsByTagName( QStringLiteral( "Value" ) ).at( 0 ).toElement();
if ( nameElem.text() != QLatin1String( "geometry" ) )
{
propertyMap.insert( nameElem.text(), valueElem.text() );
}
else
{
geometryElem = valueElem;
}
}
// Update the features
QgsFields fields = provider->fields();
QMap<QString, int> fieldMap = provider->fieldNameMap();
QMap<QString, int>::const_iterator fieldMapIt;
QString fieldName;
bool conversionSuccess;
QgsFeatureIds::const_iterator fidIt = fids.constBegin();
for ( ; fidIt != fids.constEnd(); ++fidIt )
{
#ifdef HAVE_SERVER_PYTHON_PLUGINS
QgsFeatureIterator fit = layer->getFeatures( QgsFeatureRequest( *fidIt ) );
QgsFeature feature;
while ( fit.nextFeature( feature ) )
{
if ( !accessControl->allowToEdit( layer, feature ) )
{
throw QgsSecurityAccessException( QStringLiteral( "Feature modify permission denied" ) );
}
}
#endif
QMap< QString, QString >::const_iterator it = propertyMap.constBegin();
for ( ; it != propertyMap.constEnd(); ++it )
{
fieldName = it.key();
fieldMapIt = fieldMap.find( fieldName );
if ( fieldMapIt == fieldMap.constEnd() )
{
continue;
}
QgsField field = fields.at( fieldMapIt.value() );
if ( field.type() == 2 )
layer->changeAttributeValue( *fidIt, fieldMapIt.value(), it.value().toInt( &conversionSuccess ) );
else if ( field.type() == 6 )
layer->changeAttributeValue( *fidIt, fieldMapIt.value(), it.value().toDouble( &conversionSuccess ) );
else
layer->changeAttributeValue( *fidIt, fieldMapIt.value(), it.value() );
}
if ( !geometryElem.isNull() )
{
QgsGeometry g = QgsOgcUtils::geometryFromGML( geometryElem );
if ( !layer->changeGeometry( *fidIt, g ) )
{
throw QgsRequestNotWellFormedException( QStringLiteral( "Error in change geometry" ) );
}
}
#ifdef HAVE_SERVER_PYTHON_PLUGINS
fit = layer->getFeatures( QgsFeatureRequest( *fidIt ) );
while ( fit.nextFeature( feature ) )
{
if ( !accessControl->allowToEdit( layer, feature ) )
{
layer->rollBack();
throw QgsSecurityAccessException( QStringLiteral( "Feature modify permission denied" ) );
}
}
#endif
}
}
}
// Commit the changes of the update elements
if ( !layer->commitChanges() )
{
addTransactionResult( resp, respElem, QStringLiteral( "PARTIAL" ), QStringLiteral( "Update" ), layer->commitErrors().join( QStringLiteral( "\n " ) ) );
return resp;
}
// Start the delete transaction
layer->startEditing();
if (( cap & QgsVectorDataProvider::DeleteFeatures ) )
{
// Loop through the delete elements
QDomNodeList delNodeList = typeNameElem.elementsByTagNameNS( WFS_NAMESPACE, QStringLiteral( "Delete" ) );
for ( int j = 0; j < delNodeList.count(); ++j )
{
if ( !configParser->wfstDeleteLayers().contains( layer->id() ) )
{
//no wfs permissions to do updates
QString errorMsg = "No permissions to do WFS deletes on layer '" + layer->name() + "'";
QgsMessageLog::logMessage( errorMsg, QStringLiteral( "Server" ), QgsMessageLog::CRITICAL );
addTransactionResult( resp, respElem, QStringLiteral( "FAILED" ), QStringLiteral( "Delete" ), errorMsg );
return resp;
}
actionElem = delNodeList.at( j ).toElement();
QDomElement filterElem = actionElem.firstChild().toElement();
// Get Feature Ids for the Filter element
QgsFeatureIds fids = getFeatureIdsFromFilter( filterElem, layer );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
QgsFeatureIds::const_iterator fidIt = fids.constBegin();
for ( ; fidIt != fids.constEnd(); ++fidIt )
{
QgsFeatureIterator fit = layer->getFeatures( QgsFeatureRequest( *fidIt ) );
QgsFeature feature;
while ( fit.nextFeature( feature ) )
{
if ( !accessControl->allowToEdit( layer, feature ) )
{
throw QgsSecurityAccessException( QStringLiteral( "Feature modify permission denied" ) );
}
}
}
#endif
layer->selectByIds( fids );
layer->deleteSelectedFeatures();
}
}
// Commit the changes of the delete elements
if ( !layer->commitChanges() )
{
addTransactionResult( resp, respElem, QStringLiteral( "PARTIAL" ), QStringLiteral( "Delete" ), layer->commitErrors().join( QStringLiteral( "\n " ) ) );
return resp;
}
// Store the inserted features
QgsFeatureList inFeatList;
if ( cap & QgsVectorDataProvider::AddFeatures )
{
// Get Layer Field Information
QgsFields fields = provider->fields();
QMap<QString, int> fieldMap = provider->fieldNameMap();
QMap<QString, int>::const_iterator fieldMapIt;
// Loop through the insert elements
QDomNodeList inNodeList = typeNameElem.elementsByTagNameNS( WFS_NAMESPACE, QStringLiteral( "Insert" ) );
for ( int j = 0; j < inNodeList.count(); ++j )
{
if ( !configParser->wfstInsertLayers().contains( layer->id() ) )
{
//no wfs permissions to do updates
QString errorMsg = "No permissions to do WFS inserts on layer '" + layer->name() + "'";
QgsMessageLog::logMessage( errorMsg, QStringLiteral( "Server" ), QgsMessageLog::CRITICAL );
addTransactionResult( resp, respElem, QStringLiteral( "FAILED" ), QStringLiteral( "Insert" ), errorMsg );
return resp;
}
actionElem = inNodeList.at( j ).toElement();
// Loop through the feature element
QDomNodeList featNodes = actionElem.childNodes();
for ( int l = 0; l < featNodes.count(); l++ )
{
// Add the feature to the layer
// and store it to put it's Feature Id in the response
inFeatList << QgsFeature( fields );
// Create feature for this layer
QDomElement featureElem = featNodes.at( l ).toElement();
QDomNode currentAttributeChild = featureElem.firstChild();
while ( !currentAttributeChild.isNull() )
{
QDomElement currentAttributeElement = currentAttributeChild.toElement();
QString attrName = currentAttributeElement.localName();
if ( attrName != QLatin1String( "boundedBy" ) )
{
if ( attrName != QLatin1String( "geometry" ) ) //a normal attribute
{
fieldMapIt = fieldMap.find( attrName );
if ( fieldMapIt == fieldMap.constEnd() )
{
continue;
}
QgsField field = fields.at( fieldMapIt.value() );
QString attrValue = currentAttributeElement.text();
int attrType = field.type();
QgsMessageLog::logMessage( QStringLiteral( "attr: name=%1 idx=%2 value=%3" ).arg( attrName ).arg( fieldMapIt.value() ).arg( attrValue ) );
if ( attrType == QVariant::Int )
inFeatList.last().setAttribute( fieldMapIt.value(), attrValue.toInt() );
else if ( attrType == QVariant::Double )
inFeatList.last().setAttribute( fieldMapIt.value(), attrValue.toDouble() );
else
inFeatList.last().setAttribute( fieldMapIt.value(), attrValue );
}
else //a geometry attribute
{
QgsGeometry g = QgsOgcUtils::geometryFromGML( currentAttributeElement );
inFeatList.last().setGeometry( g );
}
}
currentAttributeChild = currentAttributeChild.nextSibling();
}
}
}
}
#ifdef HAVE_SERVER_PYTHON_PLUGINS
QgsFeatureList::iterator featureIt = inFeatList.begin();
while ( featureIt != inFeatList.end() )
{
if ( !accessControl->allowToEdit( layer, *featureIt ) )
{
throw QgsSecurityAccessException( QStringLiteral( "Feature modify permission denied" ) );
}
featureIt++;
}
#endif
// add the features
if ( !provider->addFeatures( inFeatList ) )
{
addTransactionResult( resp, respElem, QStringLiteral( "Partial" ), QStringLiteral( "Insert" ), layer->commitErrors().join( QStringLiteral( "\n " ) ) );
if ( provider->hasErrors() )
{
provider->clearErrors();
}
return resp;
}
// Get the Feature Ids of the inserted feature
for ( int j = 0; j < inFeatList.size(); j++ )
{
insertResults << typeName + "." + QString::number( inFeatList[j].id() );
}
}
}
// Put the Feature Ids of the inserted feature
if ( !insertResults.isEmpty() )
{
Q_FOREACH ( const QString &fidStr, insertResults )
{
QDomElement irElem = doc.createElement( QStringLiteral( "InsertResult" ) );
QDomElement fiElem = doc.createElement( QStringLiteral( "ogc:FeatureId" ) );
fiElem.setAttribute( QStringLiteral( "fid" ), fidStr );
irElem.appendChild( fiElem );
respElem.appendChild( irElem );
}
bool QgsLayoutAtlas::endRender()
{
emit featureChanged( QgsFeature() );
emit renderEnded();
return true;
}
QgsExpressionContextScope* QgsExpressionContextUtils::atlasScope( const QgsAtlasComposition* atlas )
{
QgsExpressionContextScope* scope = new QgsExpressionContextScope( QObject::tr( "Atlas" ) );
if ( !atlas )
{
//add some dummy atlas variables. This is done so that as in certain contexts we want to show
//users that these variables are available even if they have no current value
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_pagename", QString(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_feature", QVariant::fromValue( QgsFeature() ), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_featureid", 0, true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_geometry", QVariant::fromValue( QgsGeometry() ), true ) );
return scope;
}
//add known atlas variables
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_totalfeatures", atlas->numFeatures(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_featurenumber", atlas->currentFeatureNumber() + 1, true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_filename", atlas->currentFilename(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_pagename", atlas->currentPageName(), true ) );
if ( atlas->enabled() && atlas->coverageLayer() )
{
scope->setFields( atlas->coverageLayer()->fields() );
}
if ( atlas->enabled() )
{
QgsFeature atlasFeature = atlas->feature();
scope->setFeature( atlasFeature );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_feature", QVariant::fromValue( atlasFeature ), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_featureid", atlasFeature.id(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "atlas_geometry", QVariant::fromValue( *atlasFeature.constGeometry() ), true ) );
}
return scope;
}
bool QgsMapToolIdentify::identifyVectorLayer( QList<IdentifyResult> *results, QgsVectorLayer *layer, const QgsPoint& point )
{
if ( !layer || !layer->hasGeometryType() )
return false;
if ( layer->hasScaleBasedVisibility() &&
( layer->minimumScale() > mCanvas->mapSettings().scale() ||
layer->maximumScale() <= mCanvas->mapSettings().scale() ) )
{
QgsDebugMsg( "Out of scale limits" );
return false;
}
QApplication::setOverrideCursor( Qt::WaitCursor );
QMap< QString, QString > commonDerivedAttributes;
commonDerivedAttributes.insert( tr( "(clicked coordinate)" ), point.toString() );
int featureCount = 0;
QgsFeatureList featureList;
// toLayerCoordinates will throw an exception for an 'invalid' point.
// For example, if you project a world map onto a globe using EPSG 2163
// and then click somewhere off the globe, an exception will be thrown.
try
{
// create the search rectangle
double searchRadius = searchRadiusMU( mCanvas );
QgsRectangle r;
r.setXMinimum( point.x() - searchRadius );
r.setXMaximum( point.x() + searchRadius );
r.setYMinimum( point.y() - searchRadius );
r.setYMaximum( point.y() + searchRadius );
r = toLayerCoordinates( layer, r );
QgsFeatureIterator fit = layer->getFeatures( QgsFeatureRequest().setFilterRect( r ).setFlags( QgsFeatureRequest::ExactIntersect ) );
QgsFeature f;
while ( fit.nextFeature( f ) )
featureList << QgsFeature( f );
}
catch ( QgsCsException & cse )
{
Q_UNUSED( cse );
// catch exception for 'invalid' point and proceed with no features found
QgsDebugMsg( QString( "Caught CRS exception %1" ).arg( cse.what() ) );
}
QgsFeatureList::iterator f_it = featureList.begin();
bool filter = false;
QgsRenderContext context( QgsRenderContext::fromMapSettings( mCanvas->mapSettings() ) );
context.expressionContext() << QgsExpressionContextUtils::layerScope( layer );
QgsFeatureRendererV2* renderer = layer->rendererV2();
if ( renderer && renderer->capabilities() & QgsFeatureRendererV2::ScaleDependent )
{
// setup scale for scale dependent visibility (rule based)
renderer->startRender( context, layer->fields() );
filter = renderer->capabilities() & QgsFeatureRendererV2::Filter;
}
for ( ; f_it != featureList.end(); ++f_it )
{
QMap< QString, QString > derivedAttributes = commonDerivedAttributes;
QgsFeatureId fid = f_it->id();
context.expressionContext().setFeature( *f_it );
if ( filter && !renderer->willRenderFeature( *f_it, context ) )
continue;
featureCount++;
derivedAttributes.unite( featureDerivedAttributes( &( *f_it ), layer, toLayerCoordinates( layer, point ) ) );
derivedAttributes.insert( tr( "feature id" ), fid < 0 ? tr( "new feature" ) : FID_TO_STRING( fid ) );
results->append( IdentifyResult( qobject_cast<QgsMapLayer *>( layer ), *f_it, derivedAttributes ) );
}
if ( renderer && renderer->capabilities() & QgsFeatureRendererV2::ScaleDependent )
{
renderer->stopRender( context );
}
QgsDebugMsg( "Feature count on identify: " + QString::number( featureCount ) );
QApplication::restoreOverrideCursor();
return featureCount > 0;
}
bool QgsMapToolFeatureAction::doAction( QgsVectorLayer *layer, int x, int y )
{
if ( !layer )
return false;
QgsPoint point = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
QgsFeatureList featList;
// toLayerCoordinates will throw an exception for an 'invalid' point.
// For example, if you project a world map onto a globe using EPSG 2163
// and then click somewhere off the globe, an exception will be thrown.
try
{
// create the search rectangle
double searchRadius = searchRadiusMU( mCanvas );
QgsRectangle r;
r.setXMinimum( point.x() - searchRadius );
r.setXMaximum( point.x() + searchRadius );
r.setYMinimum( point.y() - searchRadius );
r.setYMaximum( point.y() + searchRadius );
r = toLayerCoordinates( layer, r );
QgsFeatureIterator fit = layer->getFeatures( QgsFeatureRequest().setFilterRect( r ).setFlags( QgsFeatureRequest::ExactIntersect ) );
QgsFeature f;
while ( fit.nextFeature( f ) )
featList << QgsFeature( f );
}
catch ( QgsCsException & cse )
{
Q_UNUSED( cse );
// catch exception for 'invalid' point and proceed with no features found
QgsDebugMsg( QString( "Caught CRS exception %1" ).arg( cse.what() ) );
}
if ( featList.size() == 0 )
return false;
Q_FOREACH ( const QgsFeature& feat, featList )
{
if ( layer->actions()->defaultAction() >= 0 )
{
// define custom substitutions: layer id and clicked coords
QMap<QString, QVariant> substitutionMap;
substitutionMap.insert( "$layerid", layer->id() );
point = toLayerCoordinates( layer, point );
substitutionMap.insert( "$clickx", point.x() );
substitutionMap.insert( "$clicky", point.y() );
int actionIdx = layer->actions()->defaultAction();
layer->actions()->doAction( actionIdx, feat, &substitutionMap );
}
else
{
QgsMapLayerAction* mapLayerAction = QgsMapLayerActionRegistry::instance()->defaultActionForLayer( layer );
if ( mapLayerAction )
{
mapLayerAction->triggerForFeature( layer, &feat );
}
}
}
return true;
}
int QgsVectorLayerEditUtils::splitFeatures( const QList<QgsPoint>& splitLine, bool topologicalEditing )
{
if ( !L->hasGeometryType() )
return 4;
QgsFeatureList newFeatures; //store all the newly created features
double xMin, yMin, xMax, yMax;
QgsRectangle bBox; //bounding box of the split line
int returnCode = 0;
int splitFunctionReturn; //return code of QgsGeometry::splitGeometry
int numberOfSplittedFeatures = 0;
QgsFeatureList featureList;
const QgsFeatureIds selectedIds = L->selectedFeaturesIds();
if ( selectedIds.size() > 0 ) //consider only the selected features if there is a selection
{
featureList = L->selectedFeatures();
}
else //else consider all the feature that intersect the bounding box of the split line
{
if ( boundingBoxFromPointList( splitLine, xMin, yMin, xMax, yMax ) == 0 )
{
bBox.setXMinimum( xMin );
bBox.setYMinimum( yMin );
bBox.setXMaximum( xMax );
bBox.setYMaximum( yMax );
}
else
{
return 1;
}
if ( bBox.isEmpty() )
{
//if the bbox is a line, try to make a square out of it
if ( bBox.width() == 0.0 && bBox.height() > 0 )
{
bBox.setXMinimum( bBox.xMinimum() - bBox.height() / 2 );
bBox.setXMaximum( bBox.xMaximum() + bBox.height() / 2 );
}
else if ( bBox.height() == 0.0 && bBox.width() > 0 )
{
bBox.setYMinimum( bBox.yMinimum() - bBox.width() / 2 );
bBox.setYMaximum( bBox.yMaximum() + bBox.width() / 2 );
}
else
{
//If we have a single point, we still create a non-null box
double bufferDistance = 0.000001;
if ( L->crs().geographicFlag() )
bufferDistance = 0.00000001;
bBox.setXMinimum( bBox.xMinimum() - bufferDistance );
bBox.setXMaximum( bBox.xMaximum() + bufferDistance );
bBox.setYMinimum( bBox.yMinimum() - bufferDistance );
bBox.setYMaximum( bBox.yMaximum() + bufferDistance );
}
}
QgsFeatureIterator fit = L->getFeatures( QgsFeatureRequest().setFilterRect( bBox ).setFlags( QgsFeatureRequest::ExactIntersect ) );
QgsFeature f;
while ( fit.nextFeature( f ) )
featureList << QgsFeature( f );
}
QgsFeatureList::iterator select_it = featureList.begin();
for ( ; select_it != featureList.end(); ++select_it )
{
if ( !select_it->geometry() )
{
continue;
}
QList<QgsGeometry*> newGeometries;
QList<QgsPoint> topologyTestPoints;
QgsGeometry* newGeometry = 0;
splitFunctionReturn = select_it->geometry()->splitGeometry( splitLine, newGeometries, topologicalEditing, topologyTestPoints );
if ( splitFunctionReturn == 0 )
{
//change this geometry
L->editBuffer()->changeGeometry( select_it->id(), select_it->geometry() );
//insert new features
for ( int i = 0; i < newGeometries.size(); ++i )
{
newGeometry = newGeometries.at( i );
QgsFeature newFeature;
newFeature.setGeometry( newGeometry );
//use default value where possible for primary key (e.g. autoincrement),
//and use the value from the original (split) feature if not primary key
QgsAttributes newAttributes = select_it->attributes();
foreach ( int pkIdx, L->dataProvider()->pkAttributeIndexes() )
{
const QVariant defaultValue = L->dataProvider()->defaultValue( pkIdx );
if ( !defaultValue.isNull() )
{
newAttributes[ pkIdx ] = defaultValue;
}
else //try with NULL
{
newAttributes[ pkIdx ] = QVariant();
}
}
newFeature.setAttributes( newAttributes );
newFeatures.append( newFeature );
}
if ( topologicalEditing )
{
QList<QgsPoint>::const_iterator topol_it = topologyTestPoints.constBegin();
for ( ; topol_it != topologyTestPoints.constEnd(); ++topol_it )
{
addTopologicalPoints( *topol_it );
}
}
++numberOfSplittedFeatures;
}
else if ( splitFunctionReturn > 1 ) //1 means no split but also no error
void QgsPointDisplacementRenderer::createDisplacementGroups( QgsVectorLayer* vlayer, const QgsRectangle& viewExtent )
{
if ( !vlayer || ( vlayer->wkbType() != QGis::WKBPoint && vlayer->wkbType() != QGis::WKBPoint25D ) )
{
return;
}
mDisplacementGroups.clear();
mDisplacementIds.clear();
//use a spatial index to check if there is already a point at a position
QgsSpatialIndex spatialIndex;
//attributes
QgsAttributeList attList;
QList<QString> attributeStrings = usedAttributes();
QList<QString>::const_iterator attStringIt = attributeStrings.constBegin();
for ( ; attStringIt != attributeStrings.constEnd(); ++attStringIt )
{
attList.push_back( vlayer->fieldNameIndex( *attStringIt ) );
}
QgsFeature f;
QList<QgsFeatureId> intersectList;
//Because the new vector api does not allow querying features by id within a nextFeature loop, default constructed QgsFeature() is
//inserted first and the real features are created in a second loop
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( viewExtent ).setSubsetOfAttributes( attList ) );
while ( fit.nextFeature( f ) )
{
intersectList.clear();
//check, if there is already a point at that position
if ( f.geometry() )
{
intersectList = spatialIndex.intersects( searchRect( f.geometry()->asPoint() ) );
if ( intersectList.empty() )
{
spatialIndex.insertFeature( f );
}
else
{
//go through all the displacement group maps and search an entry where the id equals the result of the spatial search
QgsFeatureId existingEntry = intersectList.at( 0 );
bool found = false;
QList< QMap<QgsFeatureId, QgsFeature> >::iterator it = mDisplacementGroups.begin();
for ( ; it != mDisplacementGroups.end(); ++it )
{
if ( it->size() > 0 && it->contains( existingEntry ) )
{
found = true;
QgsFeature feature;
it->insert( f.id(), QgsFeature() );
mDisplacementIds.insert( f.id() );
break;
}
}
if ( !found )//insert the already existing feature and the new one into a map
{
QMap<QgsFeatureId, QgsFeature> newMap;
newMap.insert( existingEntry, QgsFeature() );
mDisplacementIds.insert( existingEntry );
newMap.insert( f.id(), QgsFeature() );
mDisplacementIds.insert( f.id() );
mDisplacementGroups.push_back( newMap );
}
}
}
}
//insert the real features into mDisplacementGroups
QList< QMap<QgsFeatureId, QgsFeature> >::iterator it = mDisplacementGroups.begin();
for ( ; it != mDisplacementGroups.end(); ++it )
{
QMap<QgsFeatureId, QgsFeature>::iterator mapIt = it->begin();
for ( ; mapIt != it->end(); ++mapIt )
{
QgsFeature fet;
vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mapIt.key() ) ).nextFeature( fet );
mapIt.value() = fet;
}
}
}
bool QgsMapToolIdentify::identifyVectorLayer( QgsVectorLayer *layer, int x, int y )
{
if ( !layer )
return false;
QMap< QString, QString > attributes, derivedAttributes;
QgsPoint point = mCanvas->getCoordinateTransform()->toMapCoordinates( x, y );
derivedAttributes.insert( tr( "(clicked coordinate)" ), point.toString() );
// load identify radius from settings
QSettings settings;
double identifyValue = settings.value( "/Map/identifyRadius", QGis::DEFAULT_IDENTIFY_RADIUS ).toDouble();
QString ellipsoid = settings.value( "/qgis/measure/ellipsoid", "WGS84" ).toString();
if ( identifyValue <= 0.0 )
identifyValue = QGis::DEFAULT_IDENTIFY_RADIUS;
int featureCount = 0;
QgsFeatureList featureList;
// toLayerCoordinates will throw an exception for an 'invalid' point.
// For example, if you project a world map onto a globe using EPSG 2163
// and then click somewhere off the globe, an exception will be thrown.
try
{
// create the search rectangle
double searchRadius = mCanvas->extent().width() * ( identifyValue / 100.0 );
QgsRectangle r;
r.setXMinimum( point.x() - searchRadius );
r.setXMaximum( point.x() + searchRadius );
r.setYMinimum( point.y() - searchRadius );
r.setYMaximum( point.y() + searchRadius );
r = toLayerCoordinates( layer, r );
layer->select( layer->pendingAllAttributesList(), r, true, true );
QgsFeature f;
while ( layer->nextFeature( f ) )
featureList << QgsFeature( f );
}
catch ( QgsCsException & cse )
{
Q_UNUSED( cse );
// catch exception for 'invalid' point and proceed with no features found
QgsDebugMsg( QString( "Caught CRS exception %1" ).arg( cse.what() ) );
}
// init distance/area calculator
QgsDistanceArea calc;
if ( !featureList.count() == 0 )
{
calc.setProjectionsEnabled( mCanvas->hasCrsTransformEnabled() ); // project?
calc.setEllipsoid( ellipsoid );
calc.setSourceCrs( layer->crs().srsid() );
}
QgsFeatureList::iterator f_it = featureList.begin();
for ( ; f_it != featureList.end(); ++f_it )
{
featureCount++;
QgsFeatureId fid = f_it->id();
QMap<QString, QString> derivedAttributes;
// Calculate derived attributes and insert:
// measure distance or area depending on geometry type
if ( layer->geometryType() == QGis::Line )
{
double dist = calc.measure( f_it->geometry() );
QGis::UnitType myDisplayUnits;
convertMeasurement( calc, dist, myDisplayUnits, false );
QString str = calc.textUnit( dist, 3, myDisplayUnits, false ); // dist and myDisplayUnits are out params
derivedAttributes.insert( tr( "Length" ), str );
if ( f_it->geometry()->wkbType() == QGis::WKBLineString ||
f_it->geometry()->wkbType() == QGis::WKBLineString25D )
{
// Add the start and end points in as derived attributes
str = QLocale::system().toString( f_it->geometry()->asPolyline().first().x(), 'g', 10 );
derivedAttributes.insert( tr( "firstX", "attributes get sorted; translation for lastX should be lexically larger than this one" ), str );
str = QLocale::system().toString( f_it->geometry()->asPolyline().first().y(), 'g', 10 );
derivedAttributes.insert( tr( "firstY" ), str );
str = QLocale::system().toString( f_it->geometry()->asPolyline().last().x(), 'g', 10 );
derivedAttributes.insert( tr( "lastX", "attributes get sorted; translation for firstX should be lexically smaller than this one" ), str );
str = QLocale::system().toString( f_it->geometry()->asPolyline().last().y(), 'g', 10 );
derivedAttributes.insert( tr( "lastY" ), str );
}
}
else if ( layer->geometryType() == QGis::Polygon )
{
double area = calc.measure( f_it->geometry() );
QGis::UnitType myDisplayUnits;
convertMeasurement( calc, area, myDisplayUnits, true ); // area and myDisplayUnits are out params
QString str = calc.textUnit( area, 3, myDisplayUnits, true );
derivedAttributes.insert( tr( "Area" ), str );
}
else if ( layer->geometryType() == QGis::Point &&
( f_it->geometry()->wkbType() == QGis::WKBPoint ||
f_it->geometry()->wkbType() == QGis::WKBPoint25D ) )
{
// Include the x and y coordinates of the point as a derived attribute
QString str;
str = QLocale::system().toString( f_it->geometry()->asPoint().x(), 'g', 10 );
derivedAttributes.insert( "X", str );
str = QLocale::system().toString( f_it->geometry()->asPoint().y(), 'g', 10 );
derivedAttributes.insert( "Y", str );
}
derivedAttributes.insert( tr( "feature id" ), fid < 0 ? tr( "new feature" ) : FID_TO_STRING( fid ) );
results()->addFeature( layer, *f_it, derivedAttributes );
}
QgsDebugMsg( "Feature count on identify: " + QString::number( featureCount ) );
return featureCount > 0;
}
