QgsGeometry* QgsMapToolOffsetCurve::createOriginGeometry( QgsVectorLayer* vl, const QgsPointLocator::Match& match, QgsFeature& snappedFeature )
{
  if ( !vl )
  {
    return 0;
  }

  mMultiPartGeometry = false;
  //assign feature part by vertex number (snap to vertex) or by before vertex number (snap to segment)
  int partVertexNr = match.vertexIndex();

  if ( vl == currentVectorLayer() && !mForceCopy )
  {
    //don't consider selected geometries, only the snap result
    return convertToSingleLine( snappedFeature.geometryAndOwnership(), partVertexNr, mMultiPartGeometry );
  }
  else //snapped to a background layer
  {
    //if source layer is polygon / multipolygon, create a linestring from the snapped ring
    if ( vl->geometryType() == QGis::Polygon )
    {
      //make linestring from polygon ring and return this geometry
      return linestringFromPolygon( snappedFeature.geometry(), partVertexNr );
    }

    //for background layers, try to merge selected entries together if snapped feature is contained in selection
    const QgsFeatureIds& selection = vl->selectedFeaturesIds();
    if ( selection.size() < 1 || !selection.contains( match.featureId() ) )
    {
      return convertToSingleLine( snappedFeature.geometryAndOwnership(), partVertexNr, mMultiPartGeometry );
    }
    else
    {
      //merge together if several features
      QgsFeatureList selectedFeatures = vl->selectedFeatures();
      QgsFeatureList::iterator selIt = selectedFeatures.begin();
      QgsGeometry* geom = selIt->geometryAndOwnership();
      ++selIt;
      for ( ; selIt != selectedFeatures.end(); ++selIt )
      {
        QgsGeometry* combined = geom->combine( selIt->geometry() );
        delete geom;
        geom = combined;
      }

      //if multitype, return only the snapped to geometry
      if ( geom->isMultipart() )
      {
        delete geom;
        return convertToSingleLine( snappedFeature.geometryAndOwnership(), match.vertexIndex(), mMultiPartGeometry );
      }

      return geom;
    }
  }
}
示例#2
0
QgsFeatureList QgsClipboard::transformedCopyOf( QgsCoordinateReferenceSystem destCRS )
{
  QgsFeatureList featureList = copyOf();
  QgsCoordinateTransform ct( crs(), destCRS );

  QgsDebugMsg( "transforming clipboard." );
  for ( QgsFeatureList::iterator iter = featureList.begin(); iter != featureList.end(); ++iter )
  {
    iter->geometry()->transform( ct );
  }

  return featureList;
}
示例#3
0
void QgsClipboard::setSystemClipboard()
{
    // Replace the system clipboard.
    QSettings settings;
    bool copyWKT = settings.value( "qgis/copyGeometryAsWKT", true ).toBool();

    QStringList textLines;
    QStringList textFields;

    // first do the field names
    if ( copyWKT )
    {
        textFields += "wkt_geom";
    }

    for ( int idx = 0; idx < mFeatureFields.count(); ++idx )
    {
        textFields += mFeatureFields[idx].name();
    }
    textLines += textFields.join( "\t" );
    textFields.clear();

    // then the field contents
    for ( QgsFeatureList::iterator it = mFeatureClipboard.begin(); it != mFeatureClipboard.end(); ++it )
    {
        const QgsAttributes& attributes = it->attributes();

        // TODO: Set up Paste Transformations to specify the order in which fields are added.
        if ( copyWKT )
        {
            if ( it->geometry() )
                textFields += it->geometry()->exportToWkt();
            else
            {
                textFields += settings.value( "qgis/nullValue", "NULL" ).toString();
            }
        }

        // QgsDebugMsg("about to traverse fields.");
        for ( int idx = 0; idx < attributes.count(); ++idx )
        {
            // QgsDebugMsg(QString("inspecting field '%1'.").arg(it2->toString()));
            textFields += attributes[idx].toString();
        }

        textLines += textFields.join( "\t" );
        textFields.clear();
    }

    QString textCopy = textLines.join( "\n" );

    QClipboard *cb = QApplication::clipboard();

    // Copy text into the clipboard

    // With qgis running under Linux, but with a Windows based X
    // server (Xwin32), ::Selection was necessary to get the data into
    // the Windows clipboard (which seems contrary to the Qt
    // docs). With a Linux X server, ::Clipboard was required.
    // The simple solution was to put the text into both clipboards.

#ifndef Q_OS_WIN
    cb->setText( textCopy, QClipboard::Selection );
#endif
    cb->setText( textCopy, QClipboard::Clipboard );

    QgsDebugMsg( QString( "replaced system clipboard with: %1." ).arg( textCopy ) );
}
示例#4
0
void QgsClipboard::replaceWithCopyOf( const QgsFieldMap& fields, QgsFeatureList& features )
{

  // Replace the QGis clipboard.
  mFeatureClipboard = features;
  QgsDebugMsg( "replaced QGis clipboard." );

  // Replace the system clipboard.

  QStringList textLines;
  QStringList textFields;

  // first do the field names
  textFields += "wkt_geom";
  for ( QgsFieldMap::const_iterator fit = fields.begin(); fit != fields.end(); ++fit )
  {
    textFields += fit->name();
  }
  textLines += textFields.join( "\t" );
  textFields.clear();


  // then the field contents
  for ( QgsFeatureList::iterator it = features.begin(); it != features.end(); ++it )
  {
    QgsAttributeMap attributes = it->attributeMap();


    // TODO: Set up Paste Transformations to specify the order in which fields are added.

    if ( it->geometry() )
      textFields += it->geometry()->exportToWkt();
    else
    {
      QSettings settings;
      textFields += settings.value( "qgis/nullValue", "NULL" ).toString();
    }

    // QgsDebugMsg("about to traverse fields.");
    //
    for ( QgsAttributeMap::iterator it2 = attributes.begin(); it2 != attributes.end(); ++it2 )
    {
      // QgsDebugMsg(QString("inspecting field '%1'.").arg(it2->toString()));
      textFields += it2->toString();
    }

    textLines += textFields.join( "\t" );
    textFields.clear();
  }

  QString textCopy = textLines.join( "\n" );

  QClipboard *cb = QApplication::clipboard();

  // Copy text into the clipboard

  // With qgis running under Linux, but with a Windows based X
  // server (Xwin32), ::Selection was necessary to get the data into
  // the Windows clipboard (which seems contrary to the Qt
  // docs). With a Linux X server, ::Clipboard was required.
  // The simple solution was to put the text into both clipboards.

  // The ::Selection setText() below one may need placing inside so
  // #ifdef so that it doesn't get compiled under Windows.
  cb->setText( textCopy, QClipboard::Selection );
  cb->setText( textCopy, QClipboard::Clipboard );

  QgsDebugMsg( QString( "replaced system clipboard with: %1." ).arg( textCopy ) );
}
示例#5
0
bool QgsDb2Provider::addFeatures( QgsFeatureList & flist )
{
  QgsDebugMsg( "mGeometryColType: " + mGeometryColType );
  int writeCount = 0;
  bool copyOperation = false;

  if ( !mDatabase.isOpen() )
  {
    QString errMsg;
    mDatabase = getDatabase( mConnInfo, errMsg );
    if ( !errMsg.isEmpty() )
    {
      QgsDebugMsg( "getDatabase failed: " + errMsg );
      return false;
    }
  }
  if ( !mDatabase.transaction() )
  {
    QgsDebugMsg( "transaction failed" );
    return false;
  }
  QSqlQuery query = QSqlQuery( mDatabase );
  query.setForwardOnly( true );
  QSqlQuery queryFid = QSqlQuery( mDatabase );
  queryFid.setForwardOnly( true );

  QgsFeature it = flist.at( 0 );
  QString statement;
  QString values;
  statement = QString( "INSERT INTO %1.%2 (" ).arg( mSchemaName, mTableName );

  bool first = true;

// Get the first geometry and its wkbType as when we are doing drag/drop,
// the wkbType is not passed to the DB2 provider from QgsVectorLayerImport
// Can't figure out how to resolved "unreferenced" wkbType compile message
// Don't really do anything with it at this point
#if 0
  QgsGeometry *geom = it.geometry();
  QgsWkbTypes::Type wkbType = geom->wkbType();
  QgsDebugMsg( QString( "wkbType: %1" ).arg( wkbType ) );
  QgsDebugMsg( QString( "mWkbType: %1" ).arg( mWkbType ) );
#endif

  QgsAttributes attrs = it.attributes();
  QgsDebugMsg( QString( "attrs.count: %1" ).arg( attrs.count() ) );
  QgsDebugMsg( QString( "fields.count: %1" ).arg( mAttributeFields.count() ) );
  if ( mAttributeFields.count() == ( attrs.count() + 1 ) )
  {
    copyOperation = true; // FID is first field but no attribute in attrs
  }
  else if ( mAttributeFields.count() !=  attrs.count() )
  {
    QgsDebugMsg( "Count mismatch - failing" );
    return false;
  }


  if ( attrs.count() != mAttributeFields.count() )
  {
    QgsDebugMsg( "field counts don't match" );
//  return false;
  }

  for ( int i = 0; i < mAttributeFields.count(); ++i )
  {
    QgsField fld = mAttributeFields.at( i );
    QgsDebugMsg( QString( "i: %1; got field: %2" ).arg( i ).arg( fld.name() ) );

    if ( fld.name().isEmpty() )
      continue; // invalid

    if ( mFidColName == fld.name() )
      continue; // skip identity field

//      if ( mDefaultValues.contains( i ) && mDefaultValues[i] == attrs.at( i ) )
//        continue; // skip fields having default values

    if ( !first )
    {
      statement += ',';
      values += ',';
    }
    else
      first = false;

    statement += QString( "%1" ).arg( fld.name() );
    values += QString( "?" );
  }

  // append geometry column name
  if ( !mGeometryColName.isEmpty() )
  {
    if ( !first )
    {
      statement += ',';
      values += ',';
    }

    statement += QString( "%1" ).arg( mGeometryColName );

    values += QString( "db2gse.%1(CAST (%2 AS BLOB(2M)),%3)" )
              .arg( mGeometryColType,
                    QString( "?" ),
                    QString::number( mSRId ) );
  }

  QgsDebugMsg( statement );
  QgsDebugMsg( values );
  statement += ") VALUES (" + values + ')';
  QgsDebugMsg( statement );

  QgsDebugMsg( "Prepare statement" );
  // use prepared statement to prevent from sql injection
  if ( !query.prepare( statement ) )
  {
    QString msg = query.lastError().text();
    QgsDebugMsg( msg );
    pushError( msg );
    return false;
  }


  for ( QgsFeatureList::iterator it = flist.begin(); it != flist.end(); ++it )
  {
    attrs = it->attributes();

    int fieldIdx = 0;
    if ( copyOperation )
    {
      fieldIdx = 1;  // skip first (FID) field if copying from shapefile
    }
    int bindIdx = 0;
    for ( int i = 0; i < attrs.count(); i++ )
    {
      QgsField fld = mAttributeFields.at( fieldIdx++ );
      if ( fld.name().isEmpty() )
        continue; // invalid

      if ( mFidColName == fld.name() )
        continue; // skip identity field

//      if ( mDefaultValues.contains( i ) && mDefaultValues[i] == attrs.at( i ) )
//        continue; // skip fields having default values

      QVariant::Type type = fld.type();
      if ( attrs.at( i ).isNull() || !attrs.at( i ).isValid() )
      {
        // binding null values
        if ( type == QVariant::Date || type == QVariant::DateTime )
          query.bindValue( bindIdx,  QVariant( QVariant::String ) );
        else
          query.bindValue( bindIdx,  QVariant( type ) );
      }
      else if ( type == QVariant::Int )
      {
        // binding an INTEGER value
        query.bindValue( bindIdx,  attrs.at( i ).toInt() );
      }
      else if ( type == QVariant::Double )
      {
        // binding a DOUBLE value
        query.bindValue( bindIdx,  attrs.at( i ).toDouble() );
      }
      else if ( type == QVariant::String )
      {
        // binding a TEXT value
        query.bindValue( bindIdx,  attrs.at( i ).toString() );
      }
      else if ( type == QVariant::Time )
      {
        // binding a TIME value
        query.bindValue( bindIdx,  attrs.at( i ).toTime().toString( Qt::ISODate ) );
      }
      else if ( type == QVariant::Date )
      {
        // binding a DATE value
        query.bindValue( bindIdx,  attrs.at( i ).toDate().toString( Qt::ISODate ) );
      }
      else if ( type == QVariant::DateTime )
      {
        // binding a DATETIME value
        query.bindValue( bindIdx,  attrs.at( i ).toDateTime().toString( Qt::ISODate ) );
      }
      else
      {
        query.bindValue( bindIdx,  attrs.at( i ) );
      }

#if 0
      QgsDebugMsg( QString( "bound i: %1; name: %2; value: %3; bindIdx: %4" ).
                   arg( i ).arg( fld.name() ).arg( attrs.at( i ).toString() ).arg( bindIdx ) );
#endif
      bindIdx++;
    }

    if ( !mGeometryColName.isEmpty() )
    {
      QgsGeometry geom = it->geometry();

      QByteArray bytea = QByteArray(( char* )geom.asWkb(), ( int ) geom.wkbSize() );
      query.bindValue( bindIdx,  bytea, QSql::In | QSql::Binary );
    }

    QList<QVariant> list = query.boundValues().values();

// Show bound values
#if 0
    for ( int i = 0; i < list.size(); ++i )
    {
      QgsDebugMsg( QString( "i: %1; value: %2; type: %3" )
                   .arg( i ).arg( list.at( i ).toString().toLatin1().data() ).arg( list.at( i ).typeName() ) );
    }
#endif
    if ( !query.exec() )
    {
      QString msg = query.lastError().text();
      QgsDebugMsg( msg );
      if ( !mSkipFailures )
      {
        pushError( msg );
        return false;
      }
    }

    statement = QString( "select IDENTITY_VAL_LOCAL() AS IDENTITY "
                         "FROM SYSIBM.SYSDUMMY1" );
//    QgsDebugMsg( statement );
    if ( !queryFid.exec( statement ) )
    {
      QString msg = query.lastError().text();
      QgsDebugMsg( msg );
      if ( !mSkipFailures )
      {
        pushError( msg );
        return false;
      }
    }

    if ( !queryFid.next() )
    {
      QString msg = query.lastError().text();
      QgsDebugMsg( msg );
      if ( !mSkipFailures )
      {
        pushError( msg );
        return false;
      }
    }
    it->setFeatureId( queryFid.value( 0 ).toLongLong() );
    writeCount++;
//    QgsDebugMsg( QString( "count: %1; featureId: %2" ).arg( writeCount ).arg( queryFid.value( 0 ).toLongLong() ) );
  }
  bool commitStatus = mDatabase.commit();
  QgsDebugMsg( QString( "commitStatus: %1; write count: %2; featureId: %3" )
               .arg( commitStatus ).arg( writeCount ).arg( queryFid.value( 0 ).toLongLong() ) );
  if ( !commitStatus )
  {
    pushError( "Commit of new features failed" );
    return false;
  }
  return true;
}