C++ QgsFieldMap::end方法代码示例

int QgsAttributeTableDialog::columnBoxColumnId()
{
  QgsFieldMap fieldMap = mLayer->pendingFields();
  QgsFieldMap::Iterator it = fieldMap.begin();

  for ( ; it != fieldMap.end(); ++it )
    if ( it.value().name() == mColumnBox->currentText() )
      return it.key();

  return 0;
}

void QgsAttributeTableDialog::columnBoxInit()
{
  QgsFieldMap fieldMap = mLayer->pendingFields();
  QgsFieldMap::Iterator it = fieldMap.begin();

  for ( ; it != fieldMap.end(); ++it )
    if ( mLayer->editType( it.key() ) != QgsVectorLayer::Hidden )
      mColumnBox->addItem( it.value().name() );

  mColumnBox->setCurrentIndex( mColumnBox->findText( mLayer->displayField() ) );
}

int OptVectorLayer::addFeatureWithDefaultValue( OptFeature& f )
{
//{zhangliye2715:api}
  if ( !isEditable() )
  {
    startEditing();
  }

  // add the fields to the QgsFeature
  QgsVectorDataProvider* provider = dataProvider();
  const QgsFieldMap fields = provider->fields();

  for ( QgsFieldMap::const_iterator it = fields.begin(); it != fields.end(); ++it )
  {
    f.addAttribute( it.key(), provider->defaultValue( it.key() ) );
  }

  int id = -1;
  id = OptVectorLayer::addFeature( f );
  if ( id != -1 )
  {
    //add points to other features to keep topology up-to-date
    int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );

    if( topologicalEditing )
    {
      addTopologicalPoints( f.geometry() );
    }
  }
  else
  {
    return -1;
  }

  //vlayer->setModified(true);
  //commit or rollBack the change
  if ( isModified() )
  {
    commitChanges();
  }
  else
  {
    rollBack();
    return -1;
  }

  //make the layer still editable for the next adding operation
  startEditing();

  return id;
}

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 ) );
}