Пример #1
0
void QgsVectorLayerJoinBuffer::cacheJoinLayer( QgsVectorJoinInfo& joinInfo )
{
  //memory cache not required or already done
  if ( !joinInfo.memoryCache || joinInfo.cachedAttributes.size() > 0 )
  {
    return;
  }

  QgsVectorLayer* cacheLayer = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( joinInfo.joinLayerId ) );
  if ( cacheLayer )
  {
    int joinFieldIndex;
    if ( joinInfo.joinFieldName.isEmpty() )
      joinFieldIndex = joinInfo.joinFieldIndex;   //for compatibility with 1.x
    else
      joinFieldIndex = cacheLayer->pendingFields().indexFromName( joinInfo.joinFieldName );

    if ( joinFieldIndex < 0 || joinFieldIndex >= cacheLayer->pendingFields().count() )
      return;

    joinInfo.cachedAttributes.clear();

    QgsFeatureIterator fit = cacheLayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ) );
    QgsFeature f;
    while ( fit.nextFeature( f ) )
    {
      const QgsAttributes& attrs = f.attributes();
      joinInfo.cachedAttributes.insert( attrs[joinFieldIndex].toString(), attrs );
    }
  }
}
void QgsMapCanvasAnnotationItem::setFeatureForMapPosition()
{
  if ( !mAnnotation || !mAnnotation->hasFixedMapPosition() )
    return;

  QgsVectorLayer *vectorLayer = qobject_cast< QgsVectorLayer * >( mAnnotation->mapLayer() );
  if ( !vectorLayer )
    return;

  double halfIdentifyWidth = QgsMapTool::searchRadiusMU( mMapCanvas );
  QgsPointXY mapPosition = mAnnotation->mapPosition();

  try
  {
    QgsCoordinateTransform ct( mAnnotation->mapPositionCrs(), mMapCanvas->mapSettings().destinationCrs(), QgsProject::instance() );
    if ( ct.isValid() )
      mapPosition = ct.transform( mapPosition );
  }
  catch ( QgsCsException & )
  {
  }

  QgsRectangle searchRect( mapPosition.x() - halfIdentifyWidth, mapPosition.y() - halfIdentifyWidth,
                           mapPosition.x() + halfIdentifyWidth, mapPosition.y() + halfIdentifyWidth );

  searchRect = mMapCanvas->mapSettings().mapToLayerCoordinates( vectorLayer, searchRect );

  QgsFeatureIterator fit = vectorLayer->getFeatures( QgsFeatureRequest().setFilterRect( searchRect ).setFlags( QgsFeatureRequest::ExactIntersect ).setLimit( 1 ) );

  QgsFeature currentFeature;
  ( void )fit.nextFeature( currentFeature );
  mAnnotation->setAssociatedFeature( currentFeature );
}
Пример #3
0
QString QgsMapTip::fetchFeature( QgsMapLayer *layer, QgsPoint &mapPosition, QgsMapCanvas *mpMapCanvas )
{
  QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
  if ( !vlayer )
    return "";

  // Get the setting for the search radius from user preferences, if it exists
  QSettings settings;
  double identifyValue = settings.value( "/Map/identifyRadius", QGis::DEFAULT_IDENTIFY_RADIUS ).toDouble();

  // create the search rectangle
  double searchRadius = mpMapCanvas->extent().width() * ( identifyValue / 100.0 );

  QgsRectangle r;
  r.setXMinimum( mapPosition.x() - searchRadius );
  r.setYMinimum( mapPosition.y() - searchRadius );
  r.setXMaximum( mapPosition.x() + searchRadius );
  r.setYMaximum( mapPosition.y() + searchRadius );

  r = mpMapCanvas->mapSettings().mapToLayerCoordinates( layer, r );

  QgsFeature feature;

  if ( !vlayer->getFeatures( QgsFeatureRequest().setFilterRect( r ).setFlags( QgsFeatureRequest::ExactIntersect ) ).nextFeature( feature ) )
    return "";

  int idx = vlayer->fieldNameIndex( vlayer->displayField() );
  if ( idx < 0 )
    return QgsExpression::replaceExpressionText( vlayer->displayField(), &feature, vlayer );
  else
    return feature.attribute( idx ).toString();
}
Пример #4
0
void QgsAttributeTableDelegate::setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const
{
  QgsVectorLayer *vl = layer( model );
  if ( !vl )
    return;

  int fieldIdx = model->data( index, QgsAttributeTableModel::FieldIndexRole ).toInt();
  QgsFeatureId fid = model->data( index, QgsAttributeTableModel::FeatureIdRole ).toLongLong();
  QVariant oldValue = model->data( index, Qt::EditRole );

  QVariant newValue;
  QgsEditorWidgetWrapper *eww = QgsEditorWidgetWrapper::fromWidget( editor );
  if ( !eww )
    return;

  newValue = eww->value();

  if ( ( oldValue != newValue && newValue.isValid() ) || oldValue.isNull() != newValue.isNull() )
  {
    // This fixes https://issues.qgis.org/issues/16492
    QgsFeatureRequest request( fid );
    request.setFlags( QgsFeatureRequest::NoGeometry );
    request.setSubsetOfAttributes( QgsAttributeList() );
    QgsFeature feature;
    vl->getFeatures( request ).nextFeature( feature );
    if ( feature.isValid() )
    {
      vl->beginEditCommand( tr( "Attribute changed" ) );
      vl->changeAttributeValue( fid, fieldIdx, newValue, oldValue );
      vl->endEditCommand();
    }
  }
}
Пример #5
0
QString QgsRelationReferenceFieldFormatter::representValue( QgsVectorLayer* layer, int fieldIndex, const QVariantMap& config, const QVariant& cache, const QVariant& value ) const
{
  Q_UNUSED( cache );

  // Some sanity checks
  if ( !config.contains( QStringLiteral( "Relation" ) ) )
  {
    QgsMessageLog::logMessage( "Missing Relation in configuration" );
    return value.toString();
  }
  QgsRelation relation = QgsProject::instance()->relationManager()->relation( config[QStringLiteral( "Relation" )].toString() );
  if ( !relation.isValid() )
  {
    QgsMessageLog::logMessage( "Invalid relation" );
    return value.toString();
  }
  QgsVectorLayer* referencingLayer = relation.referencingLayer();
  if ( layer != referencingLayer )
  {
    QgsMessageLog::logMessage( "representValue() with inconsistent layer parameter w.r.t relation referencingLayer" );
    return value.toString();
  }
  int referencingFieldIdx = referencingLayer->fields().lookupField( relation.fieldPairs().at( 0 ).first );
  if ( referencingFieldIdx != fieldIndex )
  {
    QgsMessageLog::logMessage( "representValue() with inconsistent fieldIndex parameter w.r.t relation referencingFieldIdx" );
    return value.toString();
  }
  QgsVectorLayer* referencedLayer = relation.referencedLayer();
  if ( !referencedLayer )
  {
    QgsMessageLog::logMessage( "Cannot find referenced layer" );
    return value.toString();
  }

  // Attributes from the referencing layer
  QgsAttributes attrs = QgsAttributes( layer->fields().count() );
  // Set the value on the foreign key field of the referencing record
  attrs[ referencingFieldIdx ] = value;

  QgsFeatureRequest request = relation.getReferencedFeatureRequest( attrs );
  QgsFeature feature;
  referencedLayer->getFeatures( request ).nextFeature( feature );
  if ( !feature.isValid() )
    return value.toString();

  QgsExpression expr( referencedLayer->displayExpression() );
  QgsExpressionContext context;
  context << QgsExpressionContextUtils::globalScope()
  << QgsExpressionContextUtils::projectScope()
  << QgsExpressionContextUtils::layerScope( referencedLayer );
  context.setFeature( feature );
  QString title = expr.evaluate( &context ).toString();
  if ( expr.hasEvalError() )
  {
    int referencedFieldIdx = referencedLayer->fields().lookupField( relation.fieldPairs().at( 0 ).second );
    title = feature.attribute( referencedFieldIdx ).toString();
  }
  return title;
}
Пример #6
0
void QgsMapToolRotateFeature::canvasReleaseEvent( QMouseEvent * e )
{
    Q_UNUSED( e );
    if ( !mRubberBand )
    {
        return;
    }

    QgsVectorLayer* vlayer = currentVectorLayer();
    if ( !vlayer )
    {
        return;
    }

    //calculations for affine transformation
    double angle = -1 * mRotation * ( PI / 180 );
    QgsPoint anchorPoint = toLayerCoordinates( vlayer, mStartPointMapCoords );
    double a = cos( angle );
    double b = -1 * sin( angle );
    double c = anchorPoint.x() - cos( angle ) * anchorPoint.x() + sin( angle ) * anchorPoint.y();
    double d = sin( angle );
    double ee = cos( angle );
    double f = anchorPoint.y() - sin( angle ) * anchorPoint.x() - cos( angle ) * anchorPoint.y();

    vlayer->beginEditCommand( tr( "Features Rotated" ) );

    int start;
    if ( vlayer->geometryType() == 2 )
    {
        start = 1;
    }
    else
    {
        start = 0;
    }

    int i = 0;
    foreach ( QgsFeatureId id, mRotatedFeatures )
    {
        QgsFeature feat;
        vlayer->getFeatures( QgsFeatureRequest().setFilterFid( id ) ).nextFeature( feat );
        QgsGeometry* geom = feat.geometry();
        i = start;

        QgsPoint vertex = geom->vertexAt( i );
        while ( vertex != QgsPoint( 0, 0 ) )
        {
            double newX = a * vertex.x() + b * vertex.y() + c;
            double newY = d * vertex.x() + ee * vertex.y() + f;

            vlayer->moveVertex( newX, newY, id, i );
            i = i + 1;
            vertex = geom->vertexAt( i );
        }

    }
void QgsMapToolRotateFeature::applyRotation( double rotation )
{
  mRotation = rotation;
  mRotationActive = false;

  QgsVectorLayer *vlayer = currentVectorLayer();
  if ( !vlayer )
  {
    deleteRubberband();
    notifyNotVectorLayer();
    return;
  }

  //calculations for affine transformation
  double angle = -1 * mRotation * ( M_PI / 180 );
  QgsPointXY anchorPoint = toLayerCoordinates( vlayer, mStartPointMapCoords );
  double a = std::cos( angle );
  double b = -1 * std::sin( angle );
  double c = anchorPoint.x() - std::cos( angle ) * anchorPoint.x() + std::sin( angle ) * anchorPoint.y();
  double d = std::sin( angle );
  double ee = std::cos( angle );
  double f = anchorPoint.y() - std::sin( angle ) * anchorPoint.x() - std::cos( angle ) * anchorPoint.y();

  vlayer->beginEditCommand( tr( "Features Rotated" ) );

  int start;
  if ( vlayer->geometryType() == 2 )
  {
    start = 1;
  }
  else
  {
    start = 0;
  }

  int i = 0;
  Q_FOREACH ( QgsFeatureId id, mRotatedFeatures )
  {
    QgsFeature feat;
    vlayer->getFeatures( QgsFeatureRequest().setFilterFid( id ) ).nextFeature( feat );
    QgsGeometry geom = feat.geometry();
    i = start;

    QgsPointXY vertex = geom.vertexAt( i );
    while ( vertex != QgsPointXY( 0, 0 ) )
    {
      double newX = a * vertex.x() + b * vertex.y() + c;
      double newY = d * vertex.x() + ee * vertex.y() + f;

      vlayer->moveVertex( newX, newY, id, i );
      i = i + 1;
      vertex = geom.vertexAt( i );
    }

  }
void QgsMapToolNodeTool::createTopologyRubberBands()
{
  QgsVectorLayer* vlayer = mSelectedFeature->vlayer();

  Q_FOREACH ( const QgsVertexEntry* vertexEntry, mSelectedFeature->vertexMap() )
  {
    if ( !vertexEntry->isSelected() )
    {
      continue;
    }

    // Snap vertex
    QMultiMap<double, QgsSnappingResult> snapResults;
    vlayer->snapWithContext( vertexEntry->pointV1(), ZERO_TOLERANCE, snapResults, QgsSnapper::SnapToVertex );
    Q_FOREACH ( const QgsSnappingResult& snapResult, snapResults )
    {
      // Get geometry of snapped feature
      QgsFeatureId snapFeatureId = snapResult.snappedAtGeometry;
      QgsFeature feature;
      if ( !vlayer->getFeatures( QgsFeatureRequest( snapFeatureId ).setSubsetOfAttributes( QgsAttributeList() ) ).nextFeature( feature ) )
      {
        continue;
      }
      // Get VertexId of snapped vertex
      QgsVertexId vid;
      if ( !feature.geometry().vertexIdFromVertexNr( snapResult.snappedVertexNr, vid ) )
      {
        continue;
      }
      // Add rubberband if not already added
      if ( !mMoveRubberBands.contains( snapFeatureId ) )
      {
        QgsGeometryRubberBand* rb = new QgsGeometryRubberBand( mCanvas, feature.geometry().type() );
        QSettings settings;
        QColor color(
          settings.value( QStringLiteral( "/qgis/digitizing/line_color_red" ), 255 ).toInt(),
          settings.value( QStringLiteral( "/qgis/digitizing/line_color_green" ), 0 ).toInt(),
          settings.value( QStringLiteral( "/qgis/digitizing/line_color_blue" ), 0 ).toInt() );
        double myAlpha = settings.value( QStringLiteral( "/qgis/digitizing/line_color_alpha" ), 30 ).toInt() / 255.0 ;
        color.setAlphaF( myAlpha );
        rb->setOutlineColor( color );
        rb->setBrushStyle( Qt::NoBrush );
        rb->setOutlineWidth( settings.value( QStringLiteral( "/qgis/digitizing/line_width" ), 1 ).toInt() );
        QgsAbstractGeometry* rbGeom = feature.geometry().geometry()->clone();
        if ( mCanvas->mapSettings().layerTransform( vlayer ).isValid() )
          rbGeom->transform( mCanvas->mapSettings().layerTransform( vlayer ) );
        rb->setGeometry( rbGeom );
        mMoveRubberBands.insert( snapFeatureId, rb );
      }
      // Add to list of vertices to be moved
      mMoveVertices[snapFeatureId].append( qMakePair( vid, toMapCoordinates( vlayer, feature.geometry().geometry()->vertexAt( vid ) ) ) );
    }
  }
Пример #9
0
bool QgsMapToolLabel::currentFeature( QgsFeature& f, bool fetchGeom )
{
  QgsVectorLayer* vlayer = currentLayer();
  if ( !vlayer )
  {
    return false;
  }
  return vlayer->getFeatures( QgsFeatureRequest()
                              .setFilterFid( mCurrentLabelPos.featureId )
                              .setFlags( fetchGeom ? QgsFeatureRequest::NoFlags : QgsFeatureRequest::NoGeometry )
                            ).nextFeature( f );
}
void QgsMapToolOffsetCurve::canvasPressEvent( QMouseEvent* e )
{
  deleteRubberBandAndGeometry();
  mGeometryModified = false;
  mForceCopy = false;

  if ( !mCanvas )
  {
    return;
  }

  //get selected features or snap to nearest feature if no selection
  QgsVectorLayer* layer = currentVectorLayer();
  if ( !layer )
  {
    notifyNotVectorLayer();
    return;
  }


  QgsMapRenderer* renderer = mCanvas->mapRenderer();
  QgsSnapper snapper( renderer );
  configureSnapper( snapper );
  QList<QgsSnappingResult> snapResults;
  snapper.snapPoint( e->pos(), snapResults );
  if ( snapResults.size() > 0 )
  {
    QgsFeature fet;
    const QgsSnappingResult& snapResult = snapResults.at( 0 );
    if ( snapResult.layer )
    {
      mSourceLayerId = snapResult.layer->id();

      QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( mSourceLayerId ) );
      if ( vl && vl->getFeatures( QgsFeatureRequest().setFilterFid( snapResult.snappedAtGeometry ) ).nextFeature( fet ) )
      {
        mForceCopy = ( e->modifiers() & Qt::ControlModifier ); //no geometry modification if ctrl is pressed
        mOriginalGeometry = createOriginGeometry( vl, snapResult, fet );
        mRubberBand = createRubberBand();
        if ( mRubberBand )
        {
          mRubberBand->setToGeometry( mOriginalGeometry, layer );
        }
        mModifiedFeature = fet.id();
        createDistanceItem();
      }
    }
  }
}
void QgsMapToolNodeTool::createTopologyRubberBands()
{
  QgsVectorLayer* vlayer = mSelectedFeature->vlayer();

  foreach ( const QgsVertexEntry* vertexEntry, mSelectedFeature->vertexMap() )
  {
    if ( !vertexEntry->isSelected() )
    {
      continue;
    }

    // Snap vertex
    QMultiMap<double, QgsSnappingResult> snapResults;
    vlayer->snapWithContext( vertexEntry->pointV1(), ZERO_TOLERANCE, snapResults, QgsSnapper::SnapToVertex );
    foreach ( const QgsSnappingResult& snapResult, snapResults.values() )
    {
      // Get geometry of snapped feature
      QgsFeatureId snapFeatureId = snapResult.snappedAtGeometry;
      QgsFeature feature;
      if ( !vlayer->getFeatures( QgsFeatureRequest( snapFeatureId ).setSubsetOfAttributes( QgsAttributeList() ) ).nextFeature( feature ) )
      {
        continue;
      }

      // Get VertexId of snapped vertex
      QgsVertexId vid;
      if ( !feature.geometry()->vertexIdFromVertexNr( snapResult.snappedVertexNr, vid ) )
      {
        continue;
      }
      // Add rubberband if not already added
      if ( !mMoveRubberBands.contains( snapFeatureId ) )
      {
        QgsGeometryRubberBand* rb = new QgsGeometryRubberBand( mCanvas, feature.geometry()->type() );
        rb->setOutlineColor( Qt::blue );
        rb->setBrushStyle( Qt::NoBrush );
        rb->setOutlineWidth( 2 );
        QgsAbstractGeometryV2* rbGeom = feature.geometry()->geometry()->clone();
        if ( mCanvas->mapSettings().layerTransform( vlayer ) )
          rbGeom->transform( *mCanvas->mapSettings().layerTransform( vlayer ) );
        rb->setGeometry( rbGeom );
        mMoveRubberBands.insert( snapFeatureId, rb );
      }
      // Add to list of vertices to be moved
      mMoveVertices[snapFeatureId].append( qMakePair( vid, toMapCoordinates( vlayer, feature.geometry()->geometry()->vertexAt( vid ) ) ) );
    }
  }
}
Пример #12
0
QString QgsMapToolLabel::currentLabelText( int trunc )
{
  bool settingsOk;
  QgsPalLayerSettings& labelSettings = currentLabelSettings( &settingsOk );
  if ( !settingsOk )
  {
    return "";
  }

  if ( labelSettings.isExpression )
  {
    QString labelText = mCurrentLabelPos.labelText;

    if ( trunc > 0 && labelText.length() > trunc )
    {
      labelText.truncate( trunc );
      labelText += "...";
    }
    return labelText;
  }
  else
  {
    QgsVectorLayer* vlayer = currentLayer();
    if ( !vlayer )
    {
      return "";
    }

    QString labelField = vlayer->customProperty( "labeling/fieldName" ).toString();
    if ( !labelField.isEmpty() )
    {
      int labelFieldId = vlayer->fieldNameIndex( labelField );
      QgsFeature f;
      if ( vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mCurrentLabelPos.featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
      {
        QString labelText = f.attribute( labelFieldId ).toString();
        if ( trunc > 0 && labelText.length() > trunc )
        {
          labelText.truncate( trunc );
          labelText += "...";
        }
        return labelText;
      }
    }
  }
  return "";
}
Пример #13
0
QString QgsMapToolLabel::currentLabelText( int trunc )
{
  if ( !mCurrentLabel.valid )
  {
    return QString();
  }
  QgsPalLayerSettings &labelSettings = mCurrentLabel.settings;

  if ( labelSettings.isExpression )
  {
    QString labelText = mCurrentLabel.pos.labelText;

    if ( trunc > 0 && labelText.length() > trunc )
    {
      labelText.truncate( trunc );
      labelText += QChar( 0x2026 );
    }
    return labelText;
  }
  else
  {
    QgsVectorLayer *vlayer = mCurrentLabel.layer;
    if ( !vlayer )
    {
      return QString();
    }

    QString labelField = labelSettings.fieldName;
    if ( !labelField.isEmpty() )
    {
      int labelFieldId = vlayer->fields().lookupField( labelField );
      QgsFeature f;
      if ( vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mCurrentLabel.pos.featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
      {
        QString labelText = f.attribute( labelFieldId ).toString();
        if ( trunc > 0 && labelText.length() > trunc )
        {
          labelText.truncate( trunc );
          labelText += QChar( 0x2026 );
        }
        return labelText;
      }
    }
  }
  return QString();
}
Пример #14
0
Qt3DCore::QEntity *QgsRuleBased3DRenderer::createEntity( const Qgs3DMapSettings &map ) const
{
  QgsVectorLayer *vl = layer();

  if ( !vl )
    return nullptr;

  Qgs3DRenderContext context( map );

  QgsExpressionContext exprContext( Qgs3DUtils::globalProjectLayerExpressionContext( vl ) );
  exprContext.setFields( vl->fields() );
  context.setExpressionContext( exprContext );

  RuleToHandlerMap handlers;
  mRootRule->createHandlers( vl, handlers );

  QSet<QString> attributeNames;
  mRootRule->prepare( context, attributeNames, handlers );

  QgsFeatureRequest req;
  req.setDestinationCrs( map.crs(), map.transformContext() );
  req.setSubsetOfAttributes( attributeNames, vl->fields() );

  QgsFeature f;
  QgsFeatureIterator fi = vl->getFeatures( req );
  while ( fi.nextFeature( f ) )
  {
    context.expressionContext().setFeature( f );
    mRootRule->registerFeature( f, context, handlers );
  }

  Qt3DCore::QEntity *entity = new Qt3DCore::QEntity;
  for ( QgsFeature3DHandler *handler : handlers.values() )
    handler->finalize( entity, context );

  qDeleteAll( handlers.values() );

  return entity;

}
Пример #15
0
bool QgsMapToolLabel::currentLabelDataDefinedPosition( double &x, bool &xSuccess, double &y, bool &ySuccess, int &xCol, int &yCol ) const
{
  QgsVectorLayer *vlayer = mCurrentLabel.layer;
  QgsFeatureId featureId = mCurrentLabel.pos.featureId;

  xSuccess = false;
  ySuccess = false;

  if ( !vlayer )
  {
    return false;
  }

  if ( mCurrentLabel.pos.isDiagram )
  {
    if ( !diagramMoveable( vlayer, xCol, yCol ) )
    {
      return false;
    }
  }
  else if ( !labelMoveable( vlayer, mCurrentLabel.settings, xCol, yCol ) )
  {
    return false;
  }

  QgsFeature f;
  if ( !vlayer->getFeatures( QgsFeatureRequest().setFilterFid( featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
  {
    return false;
  }

  QgsAttributes attributes = f.attributes();
  if ( !attributes.at( xCol ).isNull() )
    x = attributes.at( xCol ).toDouble( &xSuccess );
  if ( !attributes.at( yCol ).isNull() )
    y = attributes.at( yCol ).toDouble( &ySuccess );

  return true;
}
Пример #16
0
/**
* Selection routine called by the mouse release event
* @param thePoint = QgsPoint representing the x, y coordinates of the mouse release event
*/
void eVisEventIdTool::select( QgsPoint thePoint )
{

  if ( 0 == mCanvas )
    return;

  QgsVectorLayer* myLayer = ( QgsVectorLayer* )mCanvas->currentLayer( );

  // create the search rectangle. this was modeled after the QgsMapIdentifyTool in core QGIS application
  double searchWidth = mCanvas->extent( ).width( ) * (( double )QGis::DEFAULT_IDENTIFY_RADIUS / 100.0 );

  QgsRectangle myRectangle;
  myRectangle.setXMinimum( thePoint.x( ) - searchWidth );
  myRectangle.setXMaximum( thePoint.x( ) + searchWidth );
  myRectangle.setYMinimum( thePoint.y( ) - searchWidth );
  myRectangle.setYMaximum( thePoint.y( ) + searchWidth );

  //Transform rectange to map coordinates
  myRectangle = toLayerCoordinates( myLayer, myRectangle );

  //Rather than add to the current selection, clear all selected features
  myLayer->removeSelection( false );
  //select features
  QgsFeatureIterator fit = myLayer->getFeatures( QgsFeatureRequest().setFilterRect( myRectangle ).setFlags( QgsFeatureRequest::ExactIntersect ).setSubsetOfAttributes( QgsAttributeList() ) );

  QgsFeature f;
  QgsFeatureIds newSelectedFeatures;
  while ( fit.nextFeature( f ) )
  {
    newSelectedFeatures.insert( f.id() );
  }

  myLayer->setSelectedFeatures( newSelectedFeatures );

  //Launch a new event browser to view selected features
  mBrowser = new eVisGenericEventBrowserGui( mCanvas, mCanvas, NULL );
  mBrowser->setAttribute( Qt::WA_DeleteOnClose );
}
Пример #17
0
QString QgsMapTip::fetchFeature( QgsMapLayer *layer, QgsPoint &mapPosition, QgsMapCanvas *mapCanvas )
{
  QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
  if ( !vlayer )
    return QString();

  double searchRadius = QgsMapTool::searchRadiusMU( mapCanvas );

  QgsRectangle r;
  r.setXMinimum( mapPosition.x() - searchRadius );
  r.setYMinimum( mapPosition.y() - searchRadius );
  r.setXMaximum( mapPosition.x() + searchRadius );
  r.setYMaximum( mapPosition.y() + searchRadius );

  r = mapCanvas->mapSettings().mapToLayerCoordinates( layer, r );

  QgsFeature feature;

  if ( !vlayer->getFeatures( QgsFeatureRequest().setFilterRect( r ).setFlags( QgsFeatureRequest::ExactIntersect ) ).nextFeature( feature ) )
    return QString();

  QgsExpressionContext context( QgsExpressionContextUtils::globalProjectLayerScopes( vlayer ) );
  if ( mapCanvas )
    context.appendScope( QgsExpressionContextUtils::mapSettingsScope( mapCanvas->mapSettings() ) );

  context.setFeature( feature );

  QString mapTip = vlayer->mapTipTemplate();
  if ( !mapTip.isEmpty() )
  {
    return QgsExpression::replaceExpressionText( mapTip, &context );
  }
  else
  {
    QgsExpression exp( vlayer->displayExpression() );
    return exp.evaluate( &context ).toString();
  }
}
Пример #18
0
bool QgsMapToolLabel::currentLabelDataDefinedRotation( double &rotation, bool &rotationSuccess, int &rCol, bool ignoreXY ) const
{
  QgsVectorLayer *vlayer = mCurrentLabel.layer;
  QgsFeatureId featureId = mCurrentLabel.pos.featureId;

  rotationSuccess = false;
  if ( !vlayer )
  {
    return false;
  }

  if ( !labelIsRotatable( vlayer, mCurrentLabel.settings, rCol ) )
  {
    return false;
  }

  QgsFeature f;
  if ( !vlayer->getFeatures( QgsFeatureRequest().setFilterFid( featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
  {
    return false;
  }

  //test, if data defined x- and y- values are not null. Otherwise, the position is determined by PAL and the rotation cannot be fixed
  if ( !ignoreXY )
  {
    int xCol, yCol;
    double x, y;
    bool xSuccess, ySuccess;
    if ( !currentLabelDataDefinedPosition( x, xSuccess, y, ySuccess, xCol, yCol ) || !xSuccess || !ySuccess )
    {
      return false;
    }
  }

  rotation = f.attribute( rCol ).toDouble( &rotationSuccess );
  return true;
}
Пример #19
0
/**
* Selection routine called by the mouse release event
* @param point = QgsPointXY representing the x, y coordinates of the mouse release event
*/
void eVisEventIdTool::select( const QgsPointXY &point )
{

  if ( !mCanvas )
    return;

  QgsVectorLayer *myLayer = ( QgsVectorLayer * )mCanvas->currentLayer();

  // create the search rectangle. this was modeled after the QgsMapIdentifyTool in core QGIS application
  double searchWidth = QgsMapTool::searchRadiusMU( mCanvas );

  QgsRectangle myRectangle;
  myRectangle.setXMinimum( point.x() - searchWidth );
  myRectangle.setXMaximum( point.x() + searchWidth );
  myRectangle.setYMinimum( point.y() - searchWidth );
  myRectangle.setYMaximum( point.y() + searchWidth );

  //Transform rectangle to map coordinates
  myRectangle = toLayerCoordinates( myLayer, myRectangle );

  //select features
  QgsFeatureIterator fit = myLayer->getFeatures( QgsFeatureRequest().setFilterRect( myRectangle ).setFlags( QgsFeatureRequest::ExactIntersect ).setSubsetOfAttributes( QgsAttributeList() ) );

  QgsFeature f;
  QgsFeatureIds newSelectedFeatures;
  while ( fit.nextFeature( f ) )
  {
    newSelectedFeatures.insert( f.id() );
  }

  myLayer->selectByIds( newSelectedFeatures );

  //Launch a new event browser to view selected features
  mBrowser = new eVisGenericEventBrowserGui( mCanvas, mCanvas, nullptr );
  mBrowser->setAttribute( Qt::WA_DeleteOnClose );
}
void CDTMapToolSelectTrainingSamples::canvasReleaseEvent(QgsMapMouseEvent *e)
{
    if ( e->button() == Qt::LeftButton )
    {
        if ( mDragging )
        {
            mCanvas->panActionEnd( e->pos() );
            mDragging = false;
        }
        else // add pan to mouse cursor
        {
            // transform the mouse pos to map coordinates
            QgsPoint center = mCanvas->getCoordinateTransform()->toMapPoint( e->x(), e->y() );
            mCanvas->setExtent( QgsRectangle( center, center ) );
            mCanvas->refresh();
        }
    }
    else if (e->button()==Qt::RightButton)
    {
        QgsVectorLayer* vlayer = NULL;
        if ( !mapCanvas->currentLayer()
             || ( vlayer = qobject_cast<QgsVectorLayer *>( mapCanvas->currentLayer() ) ) == NULL )
            return;

        QRect selectRect( 0, 0, 0, 0 );
        int boxSize = 1;
        selectRect.setLeft  ( e->pos().x() - boxSize );
        selectRect.setRight ( e->pos().x() + boxSize );
        selectRect.setTop   ( e->pos().y() - boxSize );
        selectRect.setBottom( e->pos().y() + boxSize );

        const QgsMapToPixel* transform = mapCanvas->getCoordinateTransform();
        QgsPoint ll = transform->toMapCoordinates( selectRect.left(), selectRect.bottom() );
        QgsPoint ur = transform->toMapCoordinates( selectRect.right(), selectRect.top() );

        QgsPolyline points;
        points.push_back(ll);
        points.push_back(QgsPoint( ur.x(), ll.y() ));
        points.push_back(ur);
        points.push_back(QgsPoint( ll.x(), ur.y() ));

        QgsPolygon polygon;
        polygon.push_back(points);
        QgsGeometry selectGeom = *(QgsGeometry::fromPolygon(polygon) );

        if ( mapCanvas->mapSettings().hasCrsTransformEnabled() )
        {
            QgsCoordinateTransform ct( mapCanvas->mapSettings().destinationCrs(), vlayer->crs() );
            selectGeom.transform( ct );
        }

        QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( selectGeom.boundingBox() ).setFlags( QgsFeatureRequest::ExactIntersect ) );
        QgsFeature f;
        qint64 closestFeatureId = 0;
        bool foundSingleFeature = false;
        double closestFeatureDist = std::numeric_limits<double>::max();
        while ( fit.nextFeature( f ) )
        {
            QgsGeometry* g = f.geometry();
            if ( !selectGeom.intersects( g ) )
                continue;
            foundSingleFeature = true;
            double distance = g->distance( selectGeom );
            if ( distance <= closestFeatureDist )
            {
                closestFeatureDist = distance;
                closestFeatureId = f.attribute("GridCode").toInt();
            }
        }

        if ( foundSingleFeature )
            addSingleSample( closestFeatureId );
    }
}
Пример #21
0
QFont QgsMapToolLabel::labelFontCurrentFeature()
{
  QFont font;
  QgsVectorLayer* vlayer = currentLayer();

  bool labelSettingsOk;
  QgsPalLayerSettings& labelSettings = currentLabelSettings( &labelSettingsOk );

  if ( labelSettingsOk && vlayer )
  {
    font = labelSettings.textFont;

    QgsFeature f;
    if ( vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mCurrentLabelPos.featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
    {
      //size
      int sizeIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Size, vlayer );
      if ( sizeIndx != -1 )
      {
        if ( labelSettings.fontSizeInMapUnits )
        {
          font.setPixelSize( labelSettings.sizeToPixel( f.attribute( sizeIndx ).toDouble(),
                             QgsRenderContext(), QgsPalLayerSettings::MapUnits, true ) );
        }
        else
        {
          font.setPointSizeF( f.attribute( sizeIndx ).toDouble() );
        }
      }

      //family
      int fmIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Family, vlayer );
      if ( fmIndx != -1 )
      {
        font.setFamily( f.attribute( fmIndx ).toString() );
      }

      //underline
      int ulIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Underline, vlayer );
      if ( ulIndx != -1 )
      {
        font.setUnderline( f.attribute( ulIndx ).toBool() );
      }

      //strikeout
      int soIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Strikeout, vlayer );
      if ( soIndx != -1 )
      {
        font.setStrikeOut( f.attribute( soIndx ).toBool() );
      }

      //bold
      int boIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Bold, vlayer );
      if ( boIndx != -1 )
      {
        font.setBold( f.attribute( boIndx ).toBool() );
      }

      //italic
      int itIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Italic, vlayer );
      if ( itIndx != -1 )
      {
        font.setItalic( f.attribute( itIndx ).toBool() );
      }

      // TODO: Add other font data defined values (word spacing, etc.)
    }
  }

  return font;
}
Пример #22
0
  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 );
      }
Пример #23
0
void QgsAttributeTableModel::loadAttributes()
{
  if ( !layer() )
  {
    return;
  }

  bool ins = false, rm = false;

  QgsAttributeList attributes;
  const QgsFields& fields = layer()->pendingFields();
  for ( int idx = 0; idx < fields.count(); ++idx )
  {
    switch ( layer()->editType( idx ) )
    {
      case QgsVectorLayer::Hidden:
        continue;

      case QgsVectorLayer::ValueMap:
        mValueMaps.insert( idx, new QMap< QString, QVariant >( layer()->valueMap( idx ) ) );
        break;

      case QgsVectorLayer::ValueRelation:
      {
        const QgsVectorLayer::ValueRelationData &data =  layer()->valueRelation( idx );

        QgsVectorLayer *layer = qobject_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( data.mLayer ) );
        if ( !layer )
          continue;

        int ki = layer->fieldNameIndex( data.mKey );
        int vi = layer->fieldNameIndex( data.mValue );

        QgsExpression *e = 0;
        if ( !data.mFilterExpression.isEmpty() )
        {
          e = new QgsExpression( data.mFilterExpression );
          if ( e->hasParserError() || !e->prepare( layer->pendingFields() ) )
            continue;
        }

        if ( ki >= 0 && vi >= 0 )
        {
          QSet<int> attributes;
          attributes << ki << vi;

          QgsFeatureRequest::Flag flags = QgsFeatureRequest::NoGeometry;

          if ( e )
          {
            if ( e->needsGeometry() )
              flags = QgsFeatureRequest::NoFlags;

            foreach ( const QString &field, e->referencedColumns() )
            {
              int idx = layer->fieldNameIndex( field );
              if ( idx < 0 )
                continue;
              attributes << idx;
            }
          }

          QMap< QString, QVariant > *map = new QMap< QString, QVariant >();

          QgsFeatureIterator fit = layer->getFeatures( QgsFeatureRequest().setFlags( flags ).setSubsetOfAttributes( attributes.toList() ) );
          QgsFeature f;
          while ( fit.nextFeature( f ) )
          {
            if ( e && !e->evaluate( &f ).toBool() )
              continue;

            map->insert( f.attribute( vi ).toString(), f.attribute( ki ) );
          }

          mValueMaps.insert( idx, map );
        }
      }
      break;

      default:
        break;
    }

    attributes << idx;
  }
Пример #24
0
void QgsMapToolSelectUtils::setSelectFeatures( QgsMapCanvas* canvas,
	QgsGeometry* selectGeometry,
	bool doContains,
	bool doDifference,
	bool singleSelect )
{
	if ( selectGeometry->type() != QGis::Polygon )
	{
		return;
	}
	QgsVectorLayer* vlayer = QgsMapToolSelectUtils::getCurrentVectorLayer( canvas );
	if ( vlayer == nullptr )
	{
		return;
	}

	// toLayerCoordinates will throw an exception for any 'invalid' points in
	// the rubber band.
	// 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.
	//QgsGeometry selectGeomTrans( *selectGeometry );

	//if ( canvas->mapSettings().hasCrsTransformEnabled() )
	//{
	//	try
	//	{
	//		QgsCoordinateTransform ct( canvas->mapSettings().destinationCrs(), vlayer->crs() );
	//		selectGeomTrans.transform( ct );
	//	}
	//	catch ( QgsCsException &cse )
	//	{
	//		Q_UNUSED( cse );
	//		// catch exception for 'invalid' point and leave existing selection unchanged
	//		QgsLogger::warning( "Caught CRS exception " + QString( __FILE__ ) + ": " + QString::number( __LINE__ ) );
	//		LOG_INFO( "CRS Exception\nSelection extends beyond layer's coordinate system" );
	//		return;
	//	}
	//}
	QgsGeometry selectGeomTrans;
	try{
		selectGeomTrans = toLayerCoordinates( canvas, selectGeometry, vlayer );
	}
	catch ( QgsCsException & )
	{
		return;
	}

	QApplication::setOverrideCursor( Qt::WaitCursor );

	QgsDebugMsg( "Selection layer: " + vlayer->name() );
	QgsDebugMsg( "Selection polygon: " + selectGeomTrans.exportToWkt() );
	QgsDebugMsg( "doContains: " + QString( doContains ? "T" : "F" ) );
	QgsDebugMsg( "doDifference: " + QString( doDifference ? "T" : "F" ) );

	QgsRenderContext context = QgsRenderContext::fromMapSettings( canvas->mapSettings() );
	QgsFeatureRendererV2* r = vlayer->rendererV2();
	if ( r )
		r->startRender( context, vlayer->pendingFields() );

	QgsFeatureRequest request;
	request.setFilterRect( selectGeomTrans.boundingBox() );
	request.setFlags( QgsFeatureRequest::ExactIntersect );
	if ( r )
		request.setSubsetOfAttributes( r->usedAttributes(), vlayer->pendingFields() );
	else
		request.setSubsetOfAttributes( QgsAttributeList() );

	QgsFeatureIterator fit = vlayer->getFeatures( request );

	QgsFeatureIds newSelectedFeatures;
	QgsFeature f;
	QgsFeatureId closestFeatureId = 0;
	bool foundSingleFeature = false;
	double closestFeatureDist = std::numeric_limits<double>::max();
	while ( fit.nextFeature( f ) )
	{
#if (VERSION_INT >= 21601)
		context.expressionContext().setFeature( f );		//taken from QGIS 2.16.1
		// make sure to only use features that are visible
		if ( r && !r->willRenderFeature( f, context ) )
#else
		if ( r && !r->willRenderFeature( f ) )
#endif
			continue;

		QgsGeometry* g = f.geometry();
		if ( doContains )
		{
			if ( !selectGeomTrans.contains( g ) )
				continue;
		}
		else
		{
			if ( !selectGeomTrans.intersects( g ) )
				continue;
		}
		if ( singleSelect )
		{
			foundSingleFeature = true;
			double distance = g->distance( selectGeomTrans );
			if ( distance <= closestFeatureDist )
			{
				closestFeatureDist = distance;
				closestFeatureId = f.id();
			}
		}
		else
		{
			newSelectedFeatures.insert( f.id() );
		}
	}
	if ( singleSelect && foundSingleFeature )
	{
		newSelectedFeatures.insert( closestFeatureId );
	}

	if ( r )
		r->stopRender( context );

	QgsDebugMsg( "Number of new selected features: " + QString::number( newSelectedFeatures.size() ) );

	if ( doDifference )
	{
		QgsFeatureIds layerSelectedFeatures = vlayer->selectedFeaturesIds();

		QgsFeatureIds selectedFeatures;
		QgsFeatureIds deselectedFeatures;

		QgsFeatureIds::const_iterator i = newSelectedFeatures.constEnd();
		while ( i != newSelectedFeatures.constBegin() )
		{
			--i;
			if ( layerSelectedFeatures.contains( *i ) )
			{
				deselectedFeatures.insert( *i );
			}
			else
			{
				selectedFeatures.insert( *i );
			}
		}

		vlayer->modifySelection( selectedFeatures, deselectedFeatures );
	}
	else
	{
		SelectFeatures( vlayer, newSelectedFeatures );		//		vlayer->setSelectedFeatures( newSelectedFeatures );
	}

	QApplication::restoreOverrideCursor();
}
Пример #25
0
bool QgsComposerAttributeTableV2::getTableContents( QgsComposerTableContents &contents )
{
  contents.clear();

  if (( mSource == QgsComposerAttributeTableV2::AtlasFeature || mSource == QgsComposerAttributeTableV2::RelationChildren )
      && !mComposition->atlasComposition().enabled() )
  {
    //source mode requires atlas, but atlas disabled
    return false;
  }

  QgsVectorLayer* layer = sourceLayer();

  if ( !layer )
  {
    //no source layer
    return false;
  }

  //prepare filter expression
  std::auto_ptr<QgsExpression> filterExpression;
  bool activeFilter = false;
  if ( mFilterFeatures && !mFeatureFilter.isEmpty() )
  {
    filterExpression = std::auto_ptr<QgsExpression>( new QgsExpression( mFeatureFilter ) );
    if ( !filterExpression->hasParserError() )
    {
      activeFilter = true;
    }
  }

  QgsRectangle selectionRect;
  if ( mComposerMap && mShowOnlyVisibleFeatures )
  {
    selectionRect = *mComposerMap->currentMapExtent();
    if ( layer && mComposition->mapSettings().hasCrsTransformEnabled() )
    {
      //transform back to layer CRS
      QgsCoordinateTransform coordTransform( layer->crs(), mComposition->mapSettings().destinationCrs() );
      try
      {
        selectionRect = coordTransform.transformBoundingBox( selectionRect, QgsCoordinateTransform::ReverseTransform );
      }
      catch ( QgsCsException &cse )
      {
        Q_UNUSED( cse );
        return false;
      }
    }
  }

  QgsFeatureRequest req;

  if ( mSource == QgsComposerAttributeTableV2::RelationChildren )
  {
    QgsRelation relation = QgsProject::instance()->relationManager()->relation( mRelationId );
    QgsFeature* atlasFeature = mComposition->atlasComposition().currentFeature();
    if ( atlasFeature )
    {
      req = relation.getRelatedFeaturesRequest( *atlasFeature );
    }
    else
    {
      //no atlas feature, so empty table
      return true;
    }
  }

  if ( !selectionRect.isEmpty() )
    req.setFilterRect( selectionRect );

  req.setFlags( mShowOnlyVisibleFeatures ? QgsFeatureRequest::ExactIntersect : QgsFeatureRequest::NoFlags );

  if ( mSource == QgsComposerAttributeTableV2::AtlasFeature
       && mComposition->atlasComposition().enabled() )
  {
    //source mode is current atlas feature
    QgsFeature* atlasFeature = mComposition->atlasComposition().currentFeature();
    if ( atlasFeature )
    {
      req.setFilterFid( atlasFeature->id() );
    }
    else
    {
      //no atlas feature, so empty table
      return true;
    }
  }

  QgsFeature f;
  int counter = 0;
  QgsFeatureIterator fit = layer->getFeatures( req );

  while ( fit.nextFeature( f ) && counter < mMaximumNumberOfFeatures )
  {
    //check feature against filter
    if ( activeFilter )
    {
      QVariant result = filterExpression->evaluate( &f, layer->pendingFields() );
      // skip this feature if the filter evaluation is false
      if ( !result.toBool() )
      {
        continue;
      }
    }
    //check against atlas feature intersection
    if ( mFilterToAtlasIntersection )
    {
      if ( !f.geometry() || ! mComposition->atlasComposition().enabled() )
      {
        continue;
      }
      QgsFeature* atlasFeature = mComposition->atlasComposition().currentFeature();
      if ( !atlasFeature || !atlasFeature->geometry() ||
           !f.geometry()->intersects( atlasFeature->geometry() ) )
      {
        //feature falls outside current atlas feature
        continue;
      }
    }

    QgsComposerTableRow currentRow;

    QList<QgsComposerTableColumn*>::const_iterator columnIt = mColumns.constBegin();
    for ( ; columnIt != mColumns.constEnd(); ++columnIt )
    {
      int idx = layer->fieldNameIndex(( *columnIt )->attribute() );
      if ( idx != -1 )
      {
        currentRow << f.attributes()[idx];
      }
      else
      {
        // Lets assume it's an expression
        QgsExpression* expression = new QgsExpression(( *columnIt )->attribute() );
        expression->setCurrentRowNumber( counter + 1 );
        expression->prepare( layer->pendingFields() );
        QVariant value = expression->evaluate( f ) ;
        currentRow << value;
      }
    }

    if ( !mShowUniqueRowsOnly || !contentsContainsRow( contents, currentRow ) )
    {
      contents << currentRow;
      ++counter;
    }
  }

  //sort the list, starting with the last attribute
  QgsComposerAttributeTableCompareV2 c;
  QList< QPair<int, bool> > sortColumns = sortAttributes();
  for ( int i = sortColumns.size() - 1; i >= 0; --i )
  {
    c.setSortColumn( sortColumns.at( i ).first );
    c.setAscending( sortColumns.at( i ).second );
    qStableSort( contents.begin(), contents.end(), c );
  }

  recalculateTableSize();
  return true;
}
Пример #26
0
void QgsMapToolSelectUtils::setSelectFeatures( QgsMapCanvas* canvas,
    QgsGeometry* selectGeometry,
    bool doContains,
    bool doDifference,
    bool singleSelect )
{
  if ( selectGeometry->type() != QGis::Polygon )
  {
    return;
  }
  QgsVectorLayer* vlayer = QgsMapToolSelectUtils::getCurrentVectorLayer( canvas );
  if ( vlayer == NULL )
  {
    return;
  }

  // toLayerCoordinates will throw an exception for any 'invalid' points in
  // the rubber band.
  // 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.
  QgsGeometry selectGeomTrans( *selectGeometry );

  if ( canvas->mapSettings().hasCrsTransformEnabled() )
  {
    try
    {
      QgsCoordinateTransform ct( canvas->mapSettings().destinationCrs(), vlayer->crs() );
      selectGeomTrans.transform( ct );
    }
    catch ( QgsCsException &cse )
    {
      Q_UNUSED( cse );
      // catch exception for 'invalid' point and leave existing selection unchanged
      QgsLogger::warning( "Caught CRS exception " + QString( __FILE__ ) + ": " + QString::number( __LINE__ ) );
      QgisApp::instance()->messageBar()->pushMessage(
        QObject::tr( "CRS Exception" ),
        QObject::tr( "Selection extends beyond layer's coordinate system" ),
        QgsMessageBar::WARNING,
        QgisApp::instance()->messageTimeout() );
      return;
    }
  }

  QApplication::setOverrideCursor( Qt::WaitCursor );

  QgsDebugMsg( "Selection layer: " + vlayer->name() );
  QgsDebugMsg( "Selection polygon: " + selectGeomTrans.exportToWkt() );
  QgsDebugMsg( "doContains: " + QString( doContains ? "T" : "F" ) );
  QgsDebugMsg( "doDifference: " + QString( doDifference ? "T" : "F" ) );

  QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( selectGeomTrans.boundingBox() ).setFlags( QgsFeatureRequest::ExactIntersect ).setSubsetOfAttributes( QgsAttributeList() ) );

  QgsFeatureIds newSelectedFeatures;
  QgsFeature f;
  QgsFeatureId closestFeatureId = 0;
  bool foundSingleFeature = false;
  double closestFeatureDist = std::numeric_limits<double>::max();
  while ( fit.nextFeature( f ) )
  {
    QgsGeometry* g = f.geometry();
    if ( doContains )
    {
      if ( !selectGeomTrans.contains( g ) )
        continue;
    }
    else
    {
      if ( !selectGeomTrans.intersects( g ) )
        continue;
    }
    if ( singleSelect )
    {
      foundSingleFeature = true;
      double distance = g->distance( selectGeomTrans );
      if ( distance <= closestFeatureDist )
      {
        closestFeatureDist = distance;
        closestFeatureId = f.id();
      }
    }
    else
    {
      newSelectedFeatures.insert( f.id() );
    }
  }
  if ( singleSelect && foundSingleFeature )
  {
    newSelectedFeatures.insert( closestFeatureId );
  }

  QgsDebugMsg( "Number of new selected features: " + QString::number( newSelectedFeatures.size() ) );

  if ( doDifference )
  {
    QgsFeatureIds layerSelectedFeatures = vlayer->selectedFeaturesIds();

    QgsFeatureIds selectedFeatures;
    QgsFeatureIds deselectedFeatures;

    QgsFeatureIds::const_iterator i = newSelectedFeatures.constEnd();
    while ( i != newSelectedFeatures.constBegin() )
    {
      --i;
      if ( layerSelectedFeatures.contains( *i ) )
      {
        deselectedFeatures.insert( *i );
      }
      else
      {
        selectedFeatures.insert( *i );
      }
    }

    vlayer->modifySelection( selectedFeatures, deselectedFeatures );
  }
  else
  {
    vlayer->setSelectedFeatures( newSelectedFeatures );
  }

  QApplication::restoreOverrideCursor();
}
Пример #27
0
void QgsMapToolFillRing::cadCanvasReleaseEvent( QgsMapMouseEvent * e )
{
  //check if we operate on a vector layer
  QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );

  if ( !vlayer )
  {
    notifyNotVectorLayer();
    return;
  }

  if ( !vlayer->isEditable() )
  {
    notifyNotEditableLayer();
    return;
  }

  //add point to list and to rubber band
  if ( e->button() == Qt::LeftButton )
  {
    int error = addVertex( e->mapPoint() );
    if ( error == 1 )
    {
      //current layer is not a vector layer
      return;
    }
    else if ( error == 2 )
    {
      //problem with coordinate transformation
      emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
      return;
    }

    startCapturing();
  }
  else if ( e->button() == Qt::RightButton )
  {
    if ( !isCapturing() )
      return;

    deleteTempRubberBand();

    closePolygon();

    vlayer->beginEditCommand( tr( "Ring added and filled" ) );
    QList< QgsPoint > pointList = points();

    QgsFeatureId modifiedFid;
    int addRingReturnCode = vlayer->addRing( pointList, &modifiedFid );
    if ( addRingReturnCode != 0 )
    {
      QString errorMessage;
      //todo: open message box to communicate errors
      if ( addRingReturnCode == 1 )
      {
        errorMessage = tr( "a problem with geometry type occured" );
      }
      else if ( addRingReturnCode == 2 )
      {
        errorMessage = tr( "the inserted Ring is not closed" );
      }
      else if ( addRingReturnCode == 3 )
      {
        errorMessage = tr( "the inserted Ring is not a valid geometry" );
      }
      else if ( addRingReturnCode == 4 )
      {
        errorMessage = tr( "the inserted Ring crosses existing rings" );
      }
      else if ( addRingReturnCode == 5 )
      {
        errorMessage = tr( "the inserted Ring is not contained in a feature" );
      }
      else
      {
        errorMessage = tr( "an unknown error occured" );
      }
      emit messageEmitted( tr( "could not add ring since %1." ).arg( errorMessage ), QgsMessageBar::CRITICAL );
      vlayer->destroyEditCommand();
    }
    else
    {
      // find parent feature and get it attributes
      double xMin, xMax, yMin, yMax;
      QgsRectangle bBox;

      xMin = std::numeric_limits<double>::max();
      xMax = -std::numeric_limits<double>::max();
      yMin = std::numeric_limits<double>::max();
      yMax = -std::numeric_limits<double>::max();

      Q_FOREACH ( const QgsPoint& point, pointList )
      {
        xMin = qMin( xMin, point.x() );
        xMax = qMax( xMax, point.x() );
        yMin = qMin( yMin, point.y() );
        yMax = qMax( yMax, point.y() );
      }

      bBox.setXMinimum( xMin );
      bBox.setYMinimum( yMin );
      bBox.setXMaximum( xMax );
      bBox.setYMaximum( yMax );

      QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterFid( modifiedFid ) );

      QgsFeature f;
      bool res = false;
      if ( fit.nextFeature( f ) )
      {
        //create QgsFeature with wkb representation
        QgsFeature* ft = new QgsFeature( vlayer->fields(), 0 );

        ft->setGeometry( QgsGeometry::fromPolygon( QgsPolygon() << pointList.toVector() ) );
        ft->setAttributes( f.attributes() );

        if ( QApplication::keyboardModifiers() == Qt::ControlModifier )
        {
          res = vlayer->addFeature( *ft );
        }
        else
        {
          QgsAttributeDialog *dialog = new QgsAttributeDialog( vlayer, ft, false, NULL, true );
          dialog->setIsAddDialog( true );
          res = dialog->exec(); // will also add the feature
        }

        if ( res )
        {
          vlayer->endEditCommand();
        }
        else
        {
          delete ft;
          vlayer->destroyEditCommand();
        }
        res = false;
      }
    }
    stopCapturing();
  }
void QgsLineVectorLayerDirector::makeGraph( QgsGraphBuilderInterface *builder, const QVector< QgsPoint >& additionalPoints,
    QVector< QgsPoint >& tiedPoint ) const
{
  QgsVectorLayer *vl = mVectorLayer;

  if ( vl == NULL )
    return;

  int featureCount = ( int ) vl->featureCount() * 2;
  int step = 0;

  QgsCoordinateTransform ct;
  ct.setSourceCrs( vl->crs() );
  if ( builder->coordinateTransformationEnabled() )
  {
    ct.setDestCRS( builder->destinationCrs() );
  }
  else
  {
    ct.setDestCRS( vl->crs() );
  }

  tiedPoint = QVector< QgsPoint >( additionalPoints.size(), QgsPoint( 0.0, 0.0 ) );

  TiePointInfo tmpInfo;
  tmpInfo.mLength = std::numeric_limits<double>::infinity();

  QVector< TiePointInfo > pointLengthMap( additionalPoints.size(), tmpInfo );
  QVector< TiePointInfo >::iterator pointLengthIt;

  //Graph's points;
  QVector< QgsPoint > points;

  QgsFeatureIterator fit = vl->getFeatures( QgsFeatureRequest().setSubsetOfAttributes( QgsAttributeList() ) );

  // begin: tie points to the graph
  QgsAttributeList la;
  QgsFeature feature;
  while ( fit.nextFeature( feature ) )
  {
    QgsMultiPolyline mpl;
    if ( feature.constGeometry()->wkbType() == QGis::WKBMultiLineString )
      mpl = feature.constGeometry()->asMultiPolyline();
    else if ( feature.constGeometry()->wkbType() == QGis::WKBLineString )
      mpl.push_back( feature.constGeometry()->asPolyline() );

    QgsMultiPolyline::iterator mplIt;
    for ( mplIt = mpl.begin(); mplIt != mpl.end(); ++mplIt )
    {
      QgsPoint pt1, pt2;
      bool isFirstPoint = true;
      QgsPolyline::iterator pointIt;
      for ( pointIt = mplIt->begin(); pointIt != mplIt->end(); ++pointIt )
      {
        pt2 = ct.transform( *pointIt );
        points.push_back( pt2 );

        if ( !isFirstPoint )
        {
          int i = 0;
          for ( i = 0; i != additionalPoints.size(); ++i )
          {
            TiePointInfo info;
            if ( pt1 == pt2 )
            {
              info.mLength = additionalPoints[ i ].sqrDist( pt1 );
              info.mTiedPoint = pt1;
            }
            else
            {
              info.mLength = additionalPoints[ i ].sqrDistToSegment( pt1.x(), pt1.y(),
                             pt2.x(), pt2.y(), info.mTiedPoint );
            }

            if ( pointLengthMap[ i ].mLength > info.mLength )
            {
              Q_UNUSED( info.mTiedPoint );
              info.mFirstPoint = pt1;
              info.mLastPoint = pt2;

              pointLengthMap[ i ] = info;
              tiedPoint[ i ] = info.mTiedPoint;
            }
          }
        }
        pt1 = pt2;
        isFirstPoint = false;
      }
    }
    emit buildProgress( ++step, featureCount );
  }
  // end: tie points to graph

  // add tied point to graph
  int i = 0;
  for ( i = 0; i < tiedPoint.size(); ++i )
  {
    if ( tiedPoint[ i ] != QgsPoint( 0.0, 0.0 ) )
    {
      points.push_back( tiedPoint [ i ] );
    }
  }

  QgsPointCompare pointCompare( builder->topologyTolerance() );

  qSort( points.begin(), points.end(), pointCompare );
  QVector< QgsPoint >::iterator tmp = std::unique( points.begin(), points.end() );
  points.resize( tmp - points.begin() );

  for ( i = 0;i < points.size();++i )
    builder->addVertex( i, points[ i ] );

  for ( i = 0; i < tiedPoint.size() ; ++i )
    tiedPoint[ i ] = *( my_binary_search( points.begin(), points.end(), tiedPoint[ i ], pointCompare ) );

  qSort( pointLengthMap.begin(), pointLengthMap.end(), TiePointInfoCompare );

  {
    // fill attribute list 'la'
    QgsAttributeList tmpAttr;
    if ( mDirectionFieldId != -1 )
    {
      tmpAttr.push_back( mDirectionFieldId );
    }

    QList< QgsArcProperter* >::const_iterator it;
    QgsAttributeList::const_iterator it2;

    for ( it = mProperterList.begin(); it != mProperterList.end(); ++it )
    {
      QgsAttributeList tmp = ( *it )->requiredAttributes();
      for ( it2 = tmp.begin(); it2 != tmp.end(); ++it2 )
      {
        tmpAttr.push_back( *it2 );
      }
    }
    qSort( tmpAttr.begin(), tmpAttr.end() );

    int lastAttrId = -1;
    for ( it2 = tmpAttr.begin(); it2 != tmpAttr.end(); ++it2 )
    {
      if ( *it2 == lastAttrId )
      {
        continue;
      }

      la.push_back( *it2 );

      lastAttrId = *it2;
    }
  } // end fill attribute list 'la'

  // begin graph construction
  fit = vl->getFeatures( QgsFeatureRequest().setSubsetOfAttributes( la ) );
  while ( fit.nextFeature( feature ) )
  {
    int directionType = mDefaultDirection;

    // What direction have feature?
    QString str = feature.attribute( mDirectionFieldId ).toString();
    if ( str == mBothDirectionValue )
    {
      directionType = 3;
    }
    else if ( str == mDirectDirectionValue )
    {
      directionType = 1;
    }
    else if ( str == mReverseDirectionValue )
    {
      directionType = 2;
    }

    // begin features segments and add arc to the Graph;
    QgsMultiPolyline mpl;
    if ( feature.constGeometry()->wkbType() == QGis::WKBMultiLineString )
      mpl = feature.constGeometry()->asMultiPolyline();
    else if ( feature.constGeometry()->wkbType() == QGis::WKBLineString )
      mpl.push_back( feature.constGeometry()->asPolyline() );

    QgsMultiPolyline::iterator mplIt;
    for ( mplIt = mpl.begin(); mplIt != mpl.end(); ++mplIt )
    {
      QgsPoint pt1, pt2;

      bool isFirstPoint = true;
      QgsPolyline::iterator pointIt;
      for ( pointIt = mplIt->begin(); pointIt != mplIt->end(); ++pointIt )
      {
        pt2 = ct.transform( *pointIt );

        if ( !isFirstPoint )
        {
          std::map< double, QgsPoint > pointsOnArc;
          pointsOnArc[ 0.0 ] = pt1;
          pointsOnArc[ pt1.sqrDist( pt2 )] = pt2;

          TiePointInfo t;
          t.mFirstPoint = pt1;
          t.mLastPoint  = pt2;
          pointLengthIt = my_binary_search( pointLengthMap.begin(), pointLengthMap.end(), t, TiePointInfoCompare );

          if ( pointLengthIt != pointLengthMap.end() )
          {
            QVector< TiePointInfo >::iterator it;
            for ( it = pointLengthIt; it - pointLengthMap.begin() >= 0; --it )
            {
              if ( it->mFirstPoint == pt1 && it->mLastPoint == pt2 )
              {
                pointsOnArc[ pt1.sqrDist( it->mTiedPoint )] = it->mTiedPoint;
              }
            }
            for ( it = pointLengthIt + 1; it != pointLengthMap.end(); ++it )
            {
              if ( it->mFirstPoint == pt1 && it->mLastPoint == pt2 )
              {
                pointsOnArc[ pt1.sqrDist( it->mTiedPoint )] = it->mTiedPoint;
              }
            }
          }

          std::map< double, QgsPoint >::iterator pointsIt;
          QgsPoint pt1;
          QgsPoint pt2;
          int pt1idx = -1, pt2idx = -1;
          bool isFirstPoint = true;
          for ( pointsIt = pointsOnArc.begin(); pointsIt != pointsOnArc.end(); ++pointsIt )
          {
            pt2 = pointsIt->second;
            tmp = my_binary_search( points.begin(), points.end(), pt2, pointCompare );
            pt2 = *tmp;
            pt2idx = tmp - points.begin();

            if ( !isFirstPoint && pt1 != pt2 )
            {
              double distance = builder->distanceArea()->measureLine( pt1, pt2 );
              QVector< QVariant > prop;
              QList< QgsArcProperter* >::const_iterator it;
              for ( it = mProperterList.begin(); it != mProperterList.end(); ++it )
              {
                prop.push_back(( *it )->property( distance, feature ) );
              }

              if ( directionType == 1 ||
                   directionType == 3 )
              {
                builder->addArc( pt1idx, pt1, pt2idx, pt2, prop );
              }
              if ( directionType == 2 ||
                   directionType == 3 )
              {
                builder->addArc( pt2idx, pt2, pt1idx, pt1, prop );
              }
            }
            pt1idx = pt2idx;
            pt1 = pt2;
            isFirstPoint = false;
          }
        } // if ( !isFirstPoint )
        pt1 = pt2;
        isFirstPoint = false;
      } // for (it = pl.begin(); it != pl.end(); ++it)
    }
    emit buildProgress( ++step, featureCount );
  } // while( vl->nextFeature(feature) )
} // makeGraph( QgsGraphBuilderInterface *builder, const QVector< QgsPoint >& additionalPoints, QVector< QgsPoint >& tiedPoint )
Пример #29
0
QgsAbstractGeometryV2* QgsGeometryEditUtils::avoidIntersections( const QgsAbstractGeometryV2& geom, QMap<QgsVectorLayer*, QSet<QgsFeatureId> > ignoreFeatures )
{
  QScopedPointer<QgsGeometryEngine> geomEngine( QgsGeometry::createGeometryEngine( &geom ) );
  if ( geomEngine.isNull() )
  {
    return nullptr;
  }
  QgsWKBTypes::Type geomTypeBeforeModification = geom.wkbType();


  //check if g has polygon type
  if ( QgsWKBTypes::geometryType( geomTypeBeforeModification ) != QgsWKBTypes::PolygonGeometry )
  {
    return nullptr;
  }

  //read avoid intersections list from project properties
  bool listReadOk;
  QStringList avoidIntersectionsList = QgsProject::instance()->readListEntry( "Digitizing", "/AvoidIntersectionsList", QStringList(), &listReadOk );
  if ( !listReadOk )
    return nullptr; //no intersections stored in project does not mean error

  QList< QgsAbstractGeometryV2* > nearGeometries;

  //go through list, convert each layer to vector layer and call QgsVectorLayer::removePolygonIntersections for each
  QgsVectorLayer* currentLayer = nullptr;
  QStringList::const_iterator aIt = avoidIntersectionsList.constBegin();
  for ( ; aIt != avoidIntersectionsList.constEnd(); ++aIt )
  {
    currentLayer = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( *aIt ) );
    if ( currentLayer )
    {
      QgsFeatureIds ignoreIds;
      QMap<QgsVectorLayer*, QSet<qint64> >::const_iterator ignoreIt = ignoreFeatures.find( currentLayer );
      if ( ignoreIt != ignoreFeatures.constEnd() )
        ignoreIds = ignoreIt.value();

      QgsFeatureIterator fi = currentLayer->getFeatures( QgsFeatureRequest( geom.boundingBox() )
                              .setFlags( QgsFeatureRequest::ExactIntersect )
                              .setSubsetOfAttributes( QgsAttributeList() ) );
      QgsFeature f;
      while ( fi.nextFeature( f ) )
      {
        if ( ignoreIds.contains( f.id() ) )
          continue;

        if ( !f.hasGeometry() )
          continue;

        nearGeometries << f.geometry().geometry()->clone();
      }
    }
  }

  if ( nearGeometries.isEmpty() )
  {
    return nullptr;
  }


  QgsAbstractGeometryV2* combinedGeometries = geomEngine.data()->combine( nearGeometries );
  qDeleteAll( nearGeometries );
  if ( !combinedGeometries )
  {
    return nullptr;
  }

  QgsAbstractGeometryV2* diffGeom = geomEngine.data()->difference( *combinedGeometries );

  delete combinedGeometries;
  return diffGeom;
}
Пример #30
0
QFont QgsMapToolLabel::currentLabelFont()
{
  QFont font;

  QgsPalLayerSettings &labelSettings = mCurrentLabel.settings;
  QgsVectorLayer *vlayer = mCurrentLabel.layer;

  QgsRenderContext context = QgsRenderContext::fromMapSettings( mCanvas->mapSettings() );
  if ( mCurrentLabel.valid && vlayer )
  {
    font = labelSettings.format().font();

    QgsFeature f;
    if ( vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mCurrentLabel.pos.featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
    {
      //size
      int sizeIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Size, mCurrentLabel.settings, vlayer );
      if ( sizeIndx != -1 )
      {
        font.setPixelSize( QgsTextRenderer::sizeToPixel( f.attribute( sizeIndx ).toDouble(),
                           context, labelSettings.format().sizeUnit(),
                           labelSettings.format().sizeMapUnitScale() ) );
      }

      //family
      int fmIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Family, labelSettings, vlayer );
      if ( fmIndx != -1 )
      {
        font.setFamily( f.attribute( fmIndx ).toString() );
      }

      //underline
      int ulIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Underline, labelSettings, vlayer );
      if ( ulIndx != -1 )
      {
        font.setUnderline( f.attribute( ulIndx ).toBool() );
      }

      //strikeout
      int soIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Strikeout, labelSettings, vlayer );
      if ( soIndx != -1 )
      {
        font.setStrikeOut( f.attribute( soIndx ).toBool() );
      }

      //bold
      int boIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Bold, labelSettings, vlayer );
      if ( boIndx != -1 )
      {
        font.setBold( f.attribute( boIndx ).toBool() );
      }

      //italic
      int itIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Italic, labelSettings, vlayer );
      if ( itIndx != -1 )
      {
        font.setItalic( f.attribute( itIndx ).toBool() );
      }

      // TODO: Add other font data defined values (word spacing, etc.)
    }
  }

  return font;
}