Exemplo n.º 1
0
void QgsBrowserLayerProperties::setItem( QgsDataItem* item )
{
  QgsLayerItem *layerItem = qobject_cast<QgsLayerItem*>( item );
  if ( !layerItem )
    return;

  mNoticeLabel->clear();

  QgsMapLayer::LayerType type = layerItem->mapLayerType();
  QString layerMetadata = tr( "Error" );
  QgsCoordinateReferenceSystem layerCrs;

  // temporarily override /Projections/defaultBehaviour to avoid dialog prompt
  QSettings settings;
  QString defaultProjectionOption = settings.value( "/Projections/defaultBehaviour", "prompt" ).toString();
  if ( settings.value( "/Projections/defaultBehaviour", "prompt" ).toString() == "prompt" )
  {
    settings.setValue( "/Projections/defaultBehaviour", "useProject" );
  }

  // find root item
  // we need to create a temporary layer to get metadata
  // we could use a provider but the metadata is not as complete and "pretty"  and this is easier
  QgsDebugMsg( QString( "creating temporary layer using path %1" ).arg( layerItem->path() ) );
  if ( type == QgsMapLayer::RasterLayer )
  {
    QgsDebugMsg( "creating raster layer" );
    // should copy code from addLayer() to split uri ?
    QgsRasterLayer* layer = new QgsRasterLayer( layerItem->uri(), layerItem->uri(), layerItem->providerKey() );
    if ( layer )
    {
      if ( layer->isValid() )
      {
        layerCrs = layer->crs();
        layerMetadata = layer->metadata();
      }
      delete layer;
    }
  }
  else if ( type == QgsMapLayer::VectorLayer )
  {
    QgsDebugMsg( "creating vector layer" );
    QgsVectorLayer* layer = new QgsVectorLayer( layerItem->uri(), layerItem->name(), layerItem->providerKey() );
    if ( layer )
    {
      if ( layer->isValid() )
      {
        layerCrs = layer->crs();
        layerMetadata = layer->metadata();
      }
      delete layer;
    }
  }
  else if ( type == QgsMapLayer::PluginLayer )
  {
    // TODO: support display of properties for plugin layers
    return;
  }

  // restore /Projections/defaultBehaviour
  if ( defaultProjectionOption == "prompt" )
  {
    settings.setValue( "/Projections/defaultBehaviour", defaultProjectionOption );
  }

  mNameLabel->setText( layerItem->name() );
  mUriLabel->setText( layerItem->uri() );
  mProviderLabel->setText( layerItem->providerKey() );
  QString myStyle = QgsApplication::reportStyleSheet();
  mMetadataTextBrowser->document()->setDefaultStyleSheet( myStyle );
  mMetadataTextBrowser->setHtml( layerMetadata );

  // report if layer was set to to project crs without prompt (may give a false positive)
  if ( defaultProjectionOption == "prompt" )
  {
    QgsCoordinateReferenceSystem defaultCrs =
      QgisApp::instance()->mapCanvas()->mapSettings().destinationCrs();
    if ( layerCrs == defaultCrs )
      mNoticeLabel->setText( "NOTICE: Layer srs set from project (" + defaultCrs.authid() + ')' );
  }

  if ( mNoticeLabel->text().isEmpty() )
  {
    mNoticeLabel->hide();
  }
}
void QgsBrowserDockWidget::showProperties( )
{
  QgsDebugMsg( "Entered" );
  QgsDataItem* dataItem = mModel->dataItem( mBrowserView->currentIndex() );

  if ( dataItem != NULL && dataItem->type() == QgsDataItem::Layer )
  {
    QgsLayerItem *layerItem = qobject_cast<QgsLayerItem*>( dataItem );
    if ( layerItem != NULL )
    {
      QgsMapLayer::LayerType type = layerItem->mapLayerType();
      QString layerMetadata = tr( "Error" );
      QgsCoordinateReferenceSystem layerCrs;
      QString notice;

      // temporarily override /Projections/defaultBehaviour to avoid dialog prompt
      QSettings settings;
      QString defaultProjectionOption = settings.value( "/Projections/defaultBehaviour", "prompt" ).toString();
      if ( settings.value( "/Projections/defaultBehaviour", "prompt" ).toString() == "prompt" )
      {
        settings.setValue( "/Projections/defaultBehaviour", "useProject" );
      }

      // find root item
      // we need to create a temporary layer to get metadata
      // we could use a provider but the metadata is not as complete and "pretty"  and this is easier
      QgsDebugMsg( QString( "creating temporary layer using path %1" ).arg( layerItem->path() ) );
      if ( type == QgsMapLayer::RasterLayer )
      {
        QgsDebugMsg( "creating raster layer" );
        // should copy code from addLayer() to split uri ?
        QgsRasterLayer* layer = new QgsRasterLayer( layerItem->uri(), layerItem->uri(), layerItem->providerKey() );
        if ( layer != NULL )
        {
          layerCrs = layer->crs();
          layerMetadata = layer->metadata();
          delete layer;
        }
      }
      else if ( type == QgsMapLayer::VectorLayer )
      {
        QgsDebugMsg( "creating vector layer" );
        QgsVectorLayer* layer = new QgsVectorLayer( layerItem->uri(), layerItem->name(), layerItem->providerKey() );
        if ( layer != NULL )
        {
          layerCrs = layer->crs();
          layerMetadata = layer->metadata();
          delete layer;
        }
      }

      // restore /Projections/defaultBehaviour
      if ( defaultProjectionOption == "prompt" )
      {
        settings.setValue( "/Projections/defaultBehaviour", defaultProjectionOption );
      }

      // initialize dialog
      QDialog *dialog = new QDialog( this );
      Ui::QgsBrowserLayerPropertiesBase ui;
      ui.setupUi( dialog );

      dialog->setWindowTitle( tr( "Layer Properties" ) );
      ui.leName->setText( layerItem->name() );
      ui.leSource->setText( layerItem->path() );
      ui.leProvider->setText( layerItem->providerKey() );
      QString myStyle = QgsApplication::reportStyleSheet();
      ui.txtbMetadata->document()->setDefaultStyleSheet( myStyle );
      ui.txtbMetadata->setHtml( layerMetadata );

      // report if layer was set to to project crs without prompt (may give a false positive)
      if ( defaultProjectionOption == "prompt" )
      {
        QgsCoordinateReferenceSystem defaultCrs =
          QgisApp::instance()->mapCanvas()->mapRenderer()->destinationCrs();
        if ( layerCrs == defaultCrs )
          ui.lblNotice->setText( "NOTICE: Layer srs set from project (" + defaultCrs.authid() + ")" );
      }

      dialog->show();
    }
  }
}