C++ (Cpp) addLegendLayerToTreeWidget Examples

Example #1

File: qgsembedlayerdialog.cpp Project: mokerjoke/Quantum-GIS

void QgsEmbedLayerDialog::changeProjectFile()
{
  QFile projectFile( mProjectFileLineEdit->text() );
  if ( !projectFile.exists() )
  {
    return;
  }

  if ( mProjectPath == mProjectFileLineEdit->text() )
  {
    //already up to date
    return;
  }

  //check we are not embedding from/to the same project
  if ( mProjectFileLineEdit->text() == QgsProject::instance()->fileName() )
  {
    QMessageBox::critical( 0, tr( "Recursive embeding not possible" ), tr( "It is not possible to embed layers / groups from the current project" ) );
    return;
  }

  mTreeWidget->clear();

  //parse project file and fill tree
  if ( !projectFile.open( QIODevice::ReadOnly ) )
  {
    return;
  }

  QDomDocument projectDom;
  if ( !projectDom.setContent( &projectFile ) )
  {
    return;
  }

  QDomElement legendElem = projectDom.documentElement().firstChildElement( "legend" );
  if ( legendElem.isNull() )
  {
    return;
  }

  QDomNodeList legendChildren = legendElem.childNodes();
  QDomElement currentChildElem;

  for ( int i = 0; i < legendChildren.size(); ++i )
  {
    currentChildElem = legendChildren.at( i ).toElement();
    if ( currentChildElem.tagName() == "legendlayer" )
    {
      addLegendLayerToTreeWidget( currentChildElem );
    }
    else if ( currentChildElem.tagName() == "legendgroup" )
    {
      addLegendGroupToTreeWidget( currentChildElem );
    }
  }

  mProjectPath = mProjectFileLineEdit->text();
}

Example #2

File: qgslayertreeutils.cpp Project: Jokenbol/QGIS

bool QgsLayerTreeUtils::readOldLegend( QgsLayerTreeGroup* root, const QDomElement& legendElem )
{
  if ( legendElem.isNull() )
    return false;

  QDomNodeList legendChildren = legendElem.childNodes();

  for ( int i = 0; i < legendChildren.size(); ++i )
  {
    QDomElement currentChildElem = legendChildren.at( i ).toElement();
    if ( currentChildElem.tagName() == "legendlayer" )
    {
      addLegendLayerToTreeWidget( currentChildElem, root );
    }
    else if ( currentChildElem.tagName() == "legendgroup" )
    {
      addLegendGroupToTreeWidget( currentChildElem, root );
    }
  }

  return true;
}

Example #3

File: qgsembedlayerdialog.cpp Project: mokerjoke/Quantum-GIS

void QgsEmbedLayerDialog::addLegendGroupToTreeWidget( const QDomElement& groupElem, QTreeWidgetItem* parent )
{
  QDomNodeList groupChildren = groupElem.childNodes();
  QDomElement currentChildElem;

  if ( groupElem.attribute( "embedded" ) == "1" )
  {
    return;
  }

  QTreeWidgetItem* groupItem = 0;
  if ( !parent )
  {
    groupItem = new QTreeWidgetItem( mTreeWidget );
  }
  else
  {
    groupItem = new QTreeWidgetItem( parent );
  }
  groupItem->setIcon( 0, QgsApplication::getThemeIcon( "mActionFolder.png" ) );
  groupItem->setText( 0, groupElem.attribute( "name" ) );
  groupItem->setData( 0, Qt::UserRole, "group" );

  for ( int i = 0; i < groupChildren.size(); ++i )
  {
    currentChildElem = groupChildren.at( i ).toElement();
    if ( currentChildElem.tagName() == "legendlayer" )
    {
      addLegendLayerToTreeWidget( currentChildElem, groupItem );
    }
    else if ( currentChildElem.tagName() == "legendgroup" )
    {
      addLegendGroupToTreeWidget( currentChildElem, groupItem );
    }
  }
}