C++ (Cpp) const_iterator示例

示例#1

文件： qgsclipboard.cpp 项目： cayetanobv/QGIS

QString QgsClipboard::generateClipboardText() const
{
  QgsSettings settings;
  CopyFormat format = AttributesWithWKT;
  if ( settings.contains( QStringLiteral( "/qgis/copyFeatureFormat" ) ) )
    format = static_cast< CopyFormat >( settings.value( QStringLiteral( "qgis/copyFeatureFormat" ), true ).toInt() );
  else
  {
    //old format setting
    format = settings.value( QStringLiteral( "qgis/copyGeometryAsWKT" ), true ).toBool() ? AttributesWithWKT : AttributesOnly;
  }

  switch ( format )
  {
    case AttributesOnly:
    case AttributesWithWKT:
    {
      QStringList textLines;
      QStringList textFields;

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

      Q_FOREACH ( const QgsField &field, mFeatureFields )
      {
        textFields += field.name();
      }
      textLines += textFields.join( QStringLiteral( "\t" ) );
      textFields.clear();

      // then the field contents
      for ( QgsFeatureList::const_iterator it = mFeatureClipboard.constBegin(); it != mFeatureClipboard.constEnd(); ++it )
      {
        QgsAttributes attributes = it->attributes();

        // TODO: Set up Paste Transformations to specify the order in which fields are added.
        if ( format == AttributesWithWKT )
        {
          if ( it->hasGeometry() )
            textFields += it->geometry().exportToWkt();
          else
          {
            textFields += QgsApplication::nullRepresentation();
          }
        }

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

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

      return textLines.join( QStringLiteral( "\n" ) );
    }
    case GeoJSON:
    {
      QgsJSONExporter exporter;
      exporter.setSourceCrs( mCRS );
      return exporter.exportFeatures( mFeatureClipboard );
    }
  }
  return QString();
}

示例#2

文件： qgsclipboard.cpp 项目： Antoviscomi/QGIS

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";
  }

  Q_FOREACH ( const QgsField& field, mFeatureFields )
  {
    textFields += field.name();
  }
  textLines += textFields.join( "\t" );
  textFields.clear();

  // then the field contents
  for ( QgsFeatureList::const_iterator it = mFeatureClipboard.constBegin(); it != mFeatureClipboard.constEnd(); ++it )
  {
    QgsAttributes attributes = it->attributes();

    // TODO: Set up Paste Transformations to specify the order in which fields are added.
    if ( copyWKT )
    {
      if ( it->constGeometry() )
        textFields += it->constGeometry()->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.at( 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.

#ifdef Q_OS_LINUX
  cb->setText( textCopy, QClipboard::Selection );
#endif
  cb->setText( textCopy, QClipboard::Clipboard );

  QgsDebugMsgLevel( QString( "replaced system clipboard with: %1." ).arg( textCopy ), 4 );
}