Ejemplo n.º 1
0
void QgsMapRendererJob::drawOldLabeling( const QgsMapSettings& settings, QgsRenderContext& renderContext )
{
  // render all labels for vector layers in the stack, starting at the base
  QListIterator<QString> li( settings.layers() );
  li.toBack();
  while ( li.hasPrevious() )
  {
    if ( renderContext.renderingStopped() )
    {
      break;
    }

    QString layerId = li.previous();

    QgsMapLayer *ml = QgsMapLayerRegistry::instance()->mapLayer( layerId );

    if ( !ml || ( ml->type() != QgsMapLayer::VectorLayer ) )
      continue;

    // only make labels if the layer is visible
    // after scale dep viewing settings are checked
    if ( ml->hasScaleBasedVisibility() && ( settings.scale() < ml->minimumScale() || settings.scale() > ml->maximumScale() ) )
      continue;

    bool split = false;
    const QgsCoordinateTransform* ct = 0;
    QgsRectangle r1 = settings.visibleExtent(), r2;

    if ( settings.hasCrsTransformEnabled() )
    {
      ct = QgsCoordinateTransformCache::instance()->transform( ml->crs().authid(), settings.destinationCrs().authid() );
      split = reprojectToLayerExtent( ct, ml->crs().geographicFlag(), r1, r2 );
    }

    renderContext.setCoordinateTransform( ct );
    renderContext.setExtent( r1 );

    ml->drawLabels( renderContext );
    if ( split )
    {
      renderContext.setExtent( r2 );
      ml->drawLabels( renderContext );
    }
  }
}
void QgsMapRendererJob::drawOldLabeling( const QgsMapSettings& settings, QgsRenderContext& renderContext )
{
  // render all labels for vector layers in the stack, starting at the base
  QListIterator<QString> li( settings.layers() );
  li.toBack();
  while ( li.hasPrevious() )
  {
    if ( renderContext.renderingStopped() )
    {
      break;
    }

    QString layerId = li.previous();

    QgsMapLayer *ml = QgsMapLayerRegistry::instance()->mapLayer( layerId );

    if ( !ml || ( ml->type() != QgsMapLayer::VectorLayer ) )
      continue;

    // only make labels if the layer is visible
    // after scale dep viewing settings are checked
    if ( !ml->isInScaleRange( settings.scale() ) )
      continue;

    const QgsCoordinateTransform* ct = nullptr;
    QgsRectangle r1 = settings.visibleExtent(), r2;

    if ( settings.hasCrsTransformEnabled() )
    {
      ct = settings.layerTransform( ml );
      if ( ct )
        reprojectToLayerExtent( ml, ct, r1, r2 );
    }

    renderContext.setCoordinateTransform( ct );
    renderContext.setExtent( r1 );

    ml->drawLabels( renderContext );
  }
}